diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index fa7dd9dd25..d4b1cf5fef 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -22,7 +22,9 @@ jobs:
         fetch-depth: 0
     - run: git fetch --recurse-submodules=no https://github.com/adafruit/circuitpython refs/tags/*:refs/tags/*
     - name: CircuitPython version
-      run: git describe --dirty --tags
+      run: |
+        git describe --dirty --tags
+        echo "::set-env name=CP_VERSION::$(git describe --dirty --tags)"
     - name: Set up Python 3.8
       uses: actions/setup-python@v1
       with:
@@ -68,7 +70,7 @@ jobs:
         name: stubs
         path: circuitpython-stubs*
     - name: Docs
-      run: sphinx-build -E -W -b html . _build/html
+      run: sphinx-build -E -W -b html -D version=${{ env.CP_VERSION }} -D release=${{ env.CP_VERSION }} . _build/html
     - uses: actions/upload-artifact@v2
       with:
         name: docs
@@ -147,6 +149,7 @@ jobs:
         - "arduino_zero"
         - "bast_pro_mini_m0"
         - "bdmicro_vina_m0"
+        - "bless_dev_board_multi_sensor"
         - "capablerobot_usbhub"
         - "catwan_usbstick"
         - "circuitbrains_basic_m0"
@@ -236,6 +239,7 @@ jobs:
         - "pyportal"
         - "pyportal_titano"
         - "pyruler"
+        - "raytac_mdbt50q-db-40"
         - "robohatmm1_m4"
         - "sam32"
         - "same54_xplained"
diff --git a/docs/library/index.rst b/docs/library/index.rst
index 6c2e576e7d..f847ead0af 100644
--- a/docs/library/index.rst
+++ b/docs/library/index.rst
@@ -70,7 +70,7 @@ CircuitPython/MicroPython-specific libraries
 
 Functionality specific to the CircuitPython/MicroPython implementation is available in
 the following libraries. These libraries may change signficantly or be removed in future
-versions of CircuitPtyon.
+versions of CircuitPython.
 
 .. toctree::
    :maxdepth: 1
diff --git a/lib/mp3 b/lib/mp3
index c3c664bf4d..bc58a65496 160000
--- a/lib/mp3
+++ b/lib/mp3
@@ -1 +1 @@
-Subproject commit c3c664bf4db6a36d11808dfcbb5dbf7cff1715b8
+Subproject commit bc58a654964c799e972719a63ff12694998f3549
diff --git a/locale/ID.po b/locale/ID.po
index a0c255b233..aab5f82810 100644
--- a/locale/ID.po
+++ b/locale/ID.po
@@ -8,8 +8,8 @@ msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2020-07-02 15:29+0200\n"
-"PO-Revision-Date: 2020-07-04 02:45+0000\n"
-"Last-Translator: Jeff Epler <jepler@gmail.com>\n"
+"PO-Revision-Date: 2020-07-06 18:10+0000\n"
+"Last-Translator: oon arfiandwi <oon.arfiandwi@gmail.com>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
 "Language: ID\n"
 "MIME-Version: 1.0\n"
@@ -203,7 +203,7 @@ msgstr "'%s' objek tidak dapat diulang"
 #: py/obj.c
 #, c-format
 msgid "'%s' object is not subscriptable"
-msgstr ""
+msgstr "Objek '%s' tidak dapat disubkripsikan"
 
 #: py/objstr.c
 msgid "'=' alignment not allowed in string format specifier"
@@ -263,7 +263,7 @@ msgstr ", dalam %q\n"
 
 #: py/objcomplex.c
 msgid "0.0 to a complex power"
-msgstr ""
+msgstr "0.0 ke kompleks berpangkat"
 
 #: py/modbuiltins.c
 msgid "3-arg pow() not supported"
@@ -321,7 +321,7 @@ msgstr "Semua timer sedang digunakan"
 
 #: ports/nrf/common-hal/_bleio/Adapter.c
 msgid "Already advertising."
-msgstr ""
+msgstr "Sudah disebarkan."
 
 #: ports/cxd56/common-hal/analogio/AnalogIn.c
 msgid "AnalogIn not supported on given pin"
@@ -399,7 +399,7 @@ msgstr "Kedua pin harus mendukung hardware interrut"
 #: shared-bindings/framebufferio/FramebufferDisplay.c
 #: shared-bindings/rgbmatrix/RGBMatrix.c
 msgid "Brightness must be 0-1.0"
-msgstr "Brightness harus di antara 0-1.0"
+msgstr "Kecerahan harus di antara 0-1.0"
 
 #: shared-bindings/supervisor/__init__.c
 msgid "Brightness must be between 0 and 255"
@@ -442,7 +442,7 @@ msgstr "Panjang buffer harus kelipatan 512"
 
 #: shared-bindings/bitbangio/I2C.c shared-bindings/busio/I2C.c
 msgid "Buffer must be at least length 1"
-msgstr "Buffer harus memiliki panjang setidaknya 1"
+msgstr "Penyangga harus memiliki panjang setidaknya 1"
 
 #: ports/nrf/common-hal/_bleio/PacketBuffer.c
 msgid "Buffer too large and unable to allocate"
@@ -496,6 +496,8 @@ msgstr "Tidak bisa mendapatkan suhu"
 #: shared-bindings/_bleio/Adapter.c
 msgid "Cannot have scan responses for extended, connectable advertisements."
 msgstr ""
+"Tidak dapat memiliki respon pindaian untuk penyebaran yang terhubung dan "
+"diperluas."
 
 #: ports/atmel-samd/common-hal/audioio/AudioOut.c
 msgid "Cannot output both channels on the same pin"
@@ -533,11 +535,11 @@ msgstr "Tidak dapat menentukan RTS atau CTS dalam mode RS485"
 
 #: py/objslice.c
 msgid "Cannot subclass slice"
-msgstr ""
+msgstr "Tidak dapat membuat subkelas dari irisan"
 
 #: shared-module/bitbangio/SPI.c
 msgid "Cannot transfer without MOSI and MISO pins."
-msgstr ""
+msgstr "Tidak dapat transfer tanpa pin MOSI dan MISO."
 
 #: extmod/moductypes.c
 msgid "Cannot unambiguously get sizeof scalar"
@@ -546,32 +548,36 @@ msgstr "tidak dapat mendapatkan ukuran scalar secara tidak ambigu"
 #: ports/stm/common-hal/pulseio/PWMOut.c
 msgid "Cannot vary frequency on a timer that is already in use"
 msgstr ""
+"Tidak dapat membuat variasi frekuensi pada penghitung waktu yang sudah "
+"digunakan"
 
 #: shared-module/bitbangio/SPI.c
 msgid "Cannot write without MOSI pin."
-msgstr ""
+msgstr "Tidak dapat menulis tanpa pin MOSI."
 
 #: shared-bindings/_bleio/CharacteristicBuffer.c
 msgid "CharacteristicBuffer writing not provided"
-msgstr ""
+msgstr "Menulis CharacteristicBuffer tidak tersedia"
 
 #: supervisor/shared/safe_mode.c
 msgid "CircuitPython core code crashed hard. Whoops!\n"
-msgstr ""
+msgstr "Kode inti CircuitPython mengalami crash. Aduh!\n"
 
 #: supervisor/shared/safe_mode.c
 msgid ""
 "CircuitPython is in safe mode because you pressed the reset button during "
 "boot. Press again to exit safe mode.\n"
 msgstr ""
+"CircuitPython dalam mode aman karena Anda menekan tombol reset saat boot. "
+"Tekan lagi untuk keluar dari mode aman.\n"
 
 #: shared-module/bitbangio/SPI.c
 msgid "Clock pin init failed."
-msgstr ""
+msgstr "Init pin clock gagal."
 
 #: shared-module/bitbangio/I2C.c
 msgid "Clock stretch too long"
-msgstr ""
+msgstr "Peregangan clock terlalu panjang"
 
 #: ports/atmel-samd/common-hal/audiobusio/I2SOut.c
 msgid "Clock unit in use"
@@ -579,26 +585,27 @@ msgstr "Clock unit sedang digunakan"
 
 #: shared-bindings/_pew/PewPew.c
 msgid "Column entry must be digitalio.DigitalInOut"
-msgstr ""
+msgstr "Entri kolom harus digitalio.DigitalInOut"
 
 #: shared-bindings/displayio/FourWire.c shared-bindings/displayio/I2CDisplay.c
 #: shared-bindings/displayio/ParallelBus.c
 msgid "Command must be an int between 0 and 255"
-msgstr ""
+msgstr "Perintah harus berupa int di antara 0 dan 255"
 
 #: shared-bindings/_bleio/Connection.c
 msgid ""
 "Connection has been disconnected and can no longer be used. Create a new "
 "connection."
 msgstr ""
+"Koneksi telah terputus dan tidak dapat lagi digunakan. Buat koneksi baru."
 
 #: py/persistentcode.c
 msgid "Corrupt .mpy file"
-msgstr ""
+msgstr "File .mpy rusak"
 
 #: py/emitglue.c
 msgid "Corrupt raw code"
-msgstr ""
+msgstr "Kode raw rusak"
 
 #: ports/cxd56/common-hal/gnss/GNSS.c
 msgid "Could not initialize GNSS"
@@ -614,61 +621,61 @@ msgstr "Tidak dapat menginisialisasi UART"
 
 #: ports/stm/common-hal/pulseio/PWMOut.c
 msgid "Could not initialize channel"
-msgstr ""
+msgstr "Tidak dapat menginisialisasi kanal"
 
 #: ports/stm/common-hal/pulseio/PWMOut.c
 msgid "Could not initialize timer"
-msgstr ""
+msgstr "Tidak dapat menginisialisasi timer"
 
 #: ports/stm/common-hal/pulseio/PWMOut.c
 msgid "Could not re-init channel"
-msgstr ""
+msgstr "Tidak dapat menginisialisasi ulang kanal"
 
 #: ports/stm/common-hal/pulseio/PWMOut.c
 msgid "Could not re-init timer"
-msgstr ""
+msgstr "Tidak dapat menginisialisasi ulang timer"
 
 #: ports/stm/common-hal/pulseio/PWMOut.c
 msgid "Could not restart PWM"
-msgstr ""
+msgstr "Tidak dapat memulai ulang PWM"
 
 #: ports/stm/common-hal/pulseio/PWMOut.c
 msgid "Could not start PWM"
-msgstr ""
+msgstr "Tidak dapat memulai PWM"
 
 #: ports/stm/common-hal/busio/UART.c
 msgid "Could not start interrupt, RX busy"
-msgstr ""
+msgstr "Tidak dapat memulai interupsi, RX sibuk"
 
 #: shared-module/audiomp3/MP3Decoder.c
 msgid "Couldn't allocate decoder"
-msgstr ""
+msgstr "Tidak dapat mengalokasikan dekoder"
 
 #: shared-module/audiocore/WaveFile.c shared-module/audiomixer/Mixer.c
 #: shared-module/audiomp3/MP3Decoder.c
 msgid "Couldn't allocate first buffer"
-msgstr ""
+msgstr "Tidak dapat mengalokasikan penyangga pertama"
 
 #: shared-module/audiomp3/MP3Decoder.c
 msgid "Couldn't allocate input buffer"
-msgstr ""
+msgstr "Tidak dapat mengalokasikan penyangga masukan"
 
 #: shared-module/audiocore/WaveFile.c shared-module/audiomixer/Mixer.c
 #: shared-module/audiomp3/MP3Decoder.c
 msgid "Couldn't allocate second buffer"
-msgstr ""
+msgstr "Tidak dapat mengalokasikan penyangga kedua"
 
 #: supervisor/shared/safe_mode.c
 msgid "Crash into the HardFault_Handler."
-msgstr ""
+msgstr "Gagal ke HardFault_Handler."
 
 #: ports/stm/common-hal/analogio/AnalogOut.c
 msgid "DAC Channel Init Error"
-msgstr ""
+msgstr "Terjadi kesalahan saat menginisialisasi kanal DAC"
 
 #: ports/stm/common-hal/analogio/AnalogOut.c
 msgid "DAC Device Init Error"
-msgstr ""
+msgstr "Terjadi kesalahan saat menginisialisasi perangkat DAC"
 
 #: ports/atmel-samd/common-hal/audioio/AudioOut.c
 msgid "DAC already in use"
@@ -677,11 +684,11 @@ msgstr "DAC sudah digunakan"
 #: ports/atmel-samd/common-hal/displayio/ParallelBus.c
 #: ports/nrf/common-hal/displayio/ParallelBus.c
 msgid "Data 0 pin must be byte aligned"
-msgstr ""
+msgstr "Data 0 pin harus byte disejajarkan"
 
 #: shared-module/audiocore/WaveFile.c
 msgid "Data chunk must follow fmt chunk"
-msgstr ""
+msgstr "Potongan data harus mengikuti fmt chunk"
 
 #: ports/nrf/common-hal/_bleio/Adapter.c
 #, fuzzy
@@ -690,34 +697,34 @@ msgstr "Tidak bisa menyesuaikan data ke dalam paket advertisment"
 
 #: shared-bindings/audiobusio/PDMIn.c
 msgid "Destination capacity is smaller than destination_length."
-msgstr ""
+msgstr "Kapasitas tujuan lebih kecil dari destination_length."
 
 #: ports/nrf/common-hal/audiobusio/I2SOut.c
 msgid "Device in use"
-msgstr ""
+msgstr "Perangkat sedang digunakan"
 
 #: ports/cxd56/common-hal/digitalio/DigitalInOut.c
 msgid "DigitalInOut not supported on given pin"
-msgstr ""
+msgstr "DigitalInOut tidak didukung pada pin yang diberikan"
 
 #: shared-bindings/displayio/Display.c
 #: shared-bindings/framebufferio/FramebufferDisplay.c
 msgid "Display must have a 16 bit colorspace."
-msgstr ""
+msgstr "Tampilan harus memiliki ruang warna 16 bit."
 
 #: shared-bindings/displayio/Display.c
 #: shared-bindings/displayio/EPaperDisplay.c
 #: shared-bindings/framebufferio/FramebufferDisplay.c
 msgid "Display rotation must be in 90 degree increments"
-msgstr ""
+msgstr "Rotasi tampilan harus dalam kelipatan 90 derajat"
 
 #: shared-bindings/digitalio/DigitalInOut.c
 msgid "Drive mode not used when direction is input."
-msgstr ""
+msgstr "Mode kendara tidak digunakan saat arah input."
 
 #: shared-bindings/aesio/aes.c
 msgid "ECB only operates on 16 bytes at a time"
-msgstr ""
+msgstr "ECB hanya beroperasi pada 16 byte di satu waktu"
 
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
 #: ports/atmel-samd/common-hal/ps2io/Ps2.c
@@ -735,42 +742,42 @@ msgstr "Error pada regex"
 #: shared-bindings/neopixel_write/__init__.c shared-bindings/pulseio/PulseOut.c
 #: shared-bindings/terminalio/Terminal.c
 msgid "Expected a %q"
-msgstr ""
+msgstr "Diharapkan %q"
 
 #: shared-bindings/_bleio/CharacteristicBuffer.c
 #: shared-bindings/_bleio/Descriptor.c shared-bindings/_bleio/PacketBuffer.c
 msgid "Expected a Characteristic"
-msgstr ""
+msgstr "Diharapkan sebuah Karakteristik"
 
 #: shared-bindings/_bleio/Characteristic.c
 msgid "Expected a Service"
-msgstr ""
+msgstr "Diharapkan sebuah Layanan"
 
 #: shared-bindings/_bleio/Characteristic.c shared-bindings/_bleio/Descriptor.c
 #: shared-bindings/_bleio/Service.c
 msgid "Expected a UUID"
-msgstr ""
+msgstr "Diharapkan sebuah UUID"
 
 #: shared-bindings/_bleio/Adapter.c
 msgid "Expected an Address"
-msgstr ""
+msgstr "Diharapkan sebuah Alamat"
 
 #: shared-module/_pixelbuf/PixelBuf.c
 #, c-format
 msgid "Expected tuple of length %d, got %d"
-msgstr ""
+msgstr "Diharapkan tuple dengan panjang %d, didapatkan %d"
 
 #: ports/nrf/common-hal/_bleio/Adapter.c
 msgid "Extended advertisements with scan response not supported."
-msgstr ""
+msgstr "Penyebaran yang diperluas dengan respon pindai tidak didukung."
 
 #: extmod/ulab/code/fft.c
 msgid "FFT is defined for ndarrays only"
-msgstr ""
+msgstr "FFT didefinisikan hanya untuk ndarrays"
 
 #: shared-bindings/ps2io/Ps2.c
 msgid "Failed sending command."
-msgstr ""
+msgstr "Gagal mengirim perintah."
 
 #: ports/nrf/sd_mutex.c
 #, fuzzy, c-format
@@ -792,15 +799,15 @@ msgstr "Gagal untuk megalokasikan buffer RX dari %d byte"
 
 #: ports/nrf/common-hal/_bleio/Adapter.c
 msgid "Failed to connect: internal error"
-msgstr ""
+msgstr "Gagal terhubung: kesalahan internal"
 
 #: ports/nrf/common-hal/_bleio/Adapter.c
 msgid "Failed to connect: timeout"
-msgstr ""
+msgstr "Gagal terhubung: habis waktu"
 
 #: shared-module/audiomp3/MP3Decoder.c
 msgid "Failed to parse MP3 file"
-msgstr ""
+msgstr "Gagal mengurai file MP3"
 
 #: ports/nrf/sd_mutex.c
 #, fuzzy, c-format
@@ -809,43 +816,43 @@ msgstr "Gagal untuk melepaskan mutex, status: 0x%08lX"
 
 #: supervisor/shared/safe_mode.c
 msgid "Failed to write internal flash."
-msgstr ""
+msgstr "Gagal menulis flash internal."
 
 #: py/moduerrno.c
 msgid "File exists"
-msgstr ""
+msgstr "File sudah ada"
 
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
 msgid "Frequency captured is above capability. Capture Paused."
-msgstr ""
+msgstr "Frekuensi yang ditangkap berada di atas kemampuan. Penangkapan Ditunda."
 
 #: ports/stm/common-hal/pulseio/PWMOut.c
 msgid "Frequency must match existing PWMOut using this timer"
-msgstr ""
+msgstr "Frekuensi harus cocok dengan PWMOut yang ada menggunakan timer ini"
 
 #: shared-bindings/bitbangio/I2C.c shared-bindings/bitbangio/SPI.c
 #: shared-bindings/busio/I2C.c shared-bindings/busio/SPI.c
 msgid "Function requires lock"
-msgstr ""
+msgstr "Fungsinya membutuhkan kunci"
 
 #: shared-bindings/displayio/Display.c
 #: shared-bindings/displayio/EPaperDisplay.c
 #: shared-bindings/framebufferio/FramebufferDisplay.c
 msgid "Group already used"
-msgstr ""
+msgstr "Grup sudah digunakan"
 
 #: shared-module/displayio/Group.c
 msgid "Group full"
-msgstr ""
+msgstr "Grup penuh"
 
 #: ports/mimxrt10xx/common-hal/busio/SPI.c ports/stm/common-hal/busio/I2C.c
 #: ports/stm/common-hal/busio/SPI.c
 msgid "Hardware busy, try alternative pins"
-msgstr ""
+msgstr "Perangkat keras sibuk, coba pin alternatif"
 
 #: ports/mimxrt10xx/common-hal/busio/UART.c ports/stm/common-hal/busio/UART.c
 msgid "Hardware in use, try alternative pins"
-msgstr ""
+msgstr "Perangkat keras sedang digunakan, coba pin alternatif"
 
 #: extmod/vfs_posix_file.c py/objstringio.c
 msgid "I/O operation on closed file"
@@ -853,43 +860,45 @@ msgstr "operasi I/O pada file tertutup"
 
 #: ports/stm/common-hal/busio/I2C.c
 msgid "I2C Init Error"
-msgstr ""
+msgstr "Gagal Inisialisasi I2C"
 
 #: shared-bindings/aesio/aes.c
 #, c-format
 msgid "IV must be %d bytes long"
-msgstr ""
+msgstr "Panjang IV harus %d byte"
 
 #: py/persistentcode.c
 msgid ""
 "Incompatible .mpy file. Please update all .mpy files. See http://adafru.it/"
 "mpy-update for more info."
 msgstr ""
+"File .mpy tidak kompatibel. Perbarui semua file .mpy. Lihat http://adafru.it/"
+"mpy-update untuk info lebih lanjut."
 
 #: shared-bindings/_pew/PewPew.c
 msgid "Incorrect buffer size"
-msgstr ""
+msgstr "Ukuran penyangga salah"
 
 #: py/moduerrno.c
 msgid "Input/output error"
-msgstr ""
+msgstr "Kesalahan input/output"
 
 #: ports/nrf/common-hal/_bleio/__init__.c
 msgid "Insufficient authentication"
-msgstr ""
+msgstr "Otentikasi tidak cukup"
 
 #: ports/nrf/common-hal/_bleio/__init__.c
 msgid "Insufficient encryption"
-msgstr ""
+msgstr "Enkripsi tidak cukup"
 
 #: ports/stm/common-hal/busio/UART.c
 msgid "Internal define error"
-msgstr ""
+msgstr "Kesalahan definisi internal"
 
 #: shared-module/rgbmatrix/RGBMatrix.c
 #, c-format
 msgid "Internal error #%d"
-msgstr ""
+msgstr "Kesalahan internal #%d"
 
 #: shared-bindings/sdioio/SDCard.c
 msgid "Invalid %q"
@@ -902,19 +911,19 @@ msgstr "%q pada tidak valid"
 
 #: ports/stm/common-hal/analogio/AnalogIn.c
 msgid "Invalid ADC Unit value"
-msgstr ""
+msgstr "Nilai Unit ADC tidak valid"
 
 #: shared-module/displayio/OnDiskBitmap.c
 msgid "Invalid BMP file"
-msgstr ""
+msgstr "File BMP tidak valid"
 
 #: ports/stm/common-hal/analogio/AnalogOut.c
 msgid "Invalid DAC pin supplied"
-msgstr ""
+msgstr "Pin DAC yang diberikan tidak valid"
 
 #: ports/stm/common-hal/busio/I2C.c
 msgid "Invalid I2C pin selection"
-msgstr ""
+msgstr "Pilihan pin I2C tidak valid"
 
 #: ports/atmel-samd/common-hal/pulseio/PWMOut.c
 #: ports/cxd56/common-hal/pulseio/PWMOut.c
@@ -924,19 +933,19 @@ msgstr "Frekuensi PWM tidak valid"
 
 #: ports/stm/common-hal/busio/SPI.c
 msgid "Invalid SPI pin selection"
-msgstr ""
+msgstr "Pilihan pin SPI tidak valid"
 
 #: ports/stm/common-hal/busio/UART.c
 msgid "Invalid UART pin selection"
-msgstr ""
+msgstr "Pilihan pin UART tidak valid"
 
 #: py/moduerrno.c shared-module/rgbmatrix/RGBMatrix.c
 msgid "Invalid argument"
-msgstr ""
+msgstr "Argumen tidak valid"
 
 #: shared-module/displayio/Bitmap.c
 msgid "Invalid bits per value"
-msgstr ""
+msgstr "Bit per nilai tidak valid"
 
 #: ports/nrf/common-hal/busio/UART.c ports/stm/common-hal/busio/UART.c
 msgid "Invalid buffer size"
@@ -944,44 +953,44 @@ msgstr "Ukuran buffer tidak valid"
 
 #: shared-bindings/_pixelbuf/PixelBuf.c
 msgid "Invalid byteorder string"
-msgstr ""
+msgstr "String byteorder tidak valid"
 
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
 msgid "Invalid capture period. Valid range: 1 - 500"
-msgstr ""
+msgstr "Periode penangkapan tidak valid. Kisaran yang valid: 1 - 500"
 
 #: shared-bindings/audiomixer/Mixer.c
 msgid "Invalid channel count"
-msgstr ""
+msgstr "Jumlah kanal tidak valid"
 
 #: shared-bindings/digitalio/DigitalInOut.c
 msgid "Invalid direction."
-msgstr ""
+msgstr "Arah tidak valid."
 
 #: shared-module/audiocore/WaveFile.c
 msgid "Invalid file"
-msgstr ""
+msgstr "File tidak valid"
 
 #: shared-module/audiocore/WaveFile.c
 msgid "Invalid format chunk size"
-msgstr ""
+msgstr "Ukuran potongan format tidak valid"
 
 #: ports/stm/common-hal/pulseio/PWMOut.c
 msgid "Invalid frequency supplied"
-msgstr ""
+msgstr "Frekuensi yang diberikan tidak valid"
 
 #: supervisor/shared/safe_mode.c
 msgid "Invalid memory access."
-msgstr ""
+msgstr "Akses memori tidak valid."
 
 #: shared-bindings/bitbangio/SPI.c shared-bindings/busio/SPI.c
 msgid "Invalid number of bits"
-msgstr ""
+msgstr "Jumlah bit tidak valid"
 
 #: shared-bindings/bitbangio/SPI.c shared-bindings/busio/SPI.c
 #: shared-bindings/displayio/FourWire.c
 msgid "Invalid phase"
-msgstr ""
+msgstr "Fase tidak valid"
 
 #: ports/atmel-samd/common-hal/audioio/AudioOut.c
 #: ports/atmel-samd/common-hal/touchio/TouchIn.c
@@ -1011,44 +1020,44 @@ msgstr "Pin-pin tidak valid"
 
 #: ports/stm/common-hal/pulseio/PWMOut.c
 msgid "Invalid pins for PWMOut"
-msgstr ""
+msgstr "Pin untuk PWMOut tidak valid"
 
 #: shared-bindings/bitbangio/SPI.c shared-bindings/busio/SPI.c
 #: shared-bindings/displayio/FourWire.c
 msgid "Invalid polarity"
-msgstr ""
+msgstr "Polaritas tidak valid"
 
 #: shared-bindings/_bleio/Characteristic.c
 msgid "Invalid properties"
-msgstr ""
+msgstr "Properti tidak valid"
 
 #: shared-bindings/microcontroller/__init__.c
 msgid "Invalid run mode."
-msgstr ""
+msgstr "Mode operasi tidak valid."
 
 #: shared-module/_bleio/Attribute.c
 msgid "Invalid security_mode"
-msgstr ""
+msgstr "security_mode tidak valid"
 
 #: shared-bindings/audiomixer/Mixer.c
 msgid "Invalid voice"
-msgstr ""
+msgstr "Suara tidak valid"
 
 #: shared-bindings/audiomixer/Mixer.c
 msgid "Invalid voice count"
-msgstr ""
+msgstr "Hitungan suara tidak valid"
 
 #: shared-module/audiocore/WaveFile.c
 msgid "Invalid wave file"
-msgstr ""
+msgstr "File wave tidak valid"
 
 #: ports/stm/common-hal/busio/UART.c
 msgid "Invalid word/bit length"
-msgstr ""
+msgstr "Panjang kata/bit tidak valid"
 
 #: shared-bindings/aesio/aes.c
 msgid "Key must be 16, 24, or 32 bytes long"
-msgstr ""
+msgstr "Panjang kunci harus 16, 24, atau 32 byte"
 
 #: py/compile.c
 msgid "LHS of keyword arg must be an id"
@@ -1056,40 +1065,40 @@ msgstr "LHS dari keyword arg harus menjadi sebuah id"
 
 #: shared-module/displayio/Group.c
 msgid "Layer already in a group."
-msgstr ""
+msgstr "Layer sudah ada dalam grup."
 
 #: shared-module/displayio/Group.c
 msgid "Layer must be a Group or TileGrid subclass."
-msgstr ""
+msgstr "Layer harus sebuah Grup atau subklas dari TileGrid."
 
 #: py/objslice.c
 msgid "Length must be an int"
-msgstr ""
+msgstr "Panjang harus berupa int"
 
 #: py/objslice.c
 msgid "Length must be non-negative"
-msgstr ""
+msgstr "Panjangnya harus non-negatif"
 
 #: shared-module/bitbangio/SPI.c
 msgid "MISO pin init failed."
-msgstr ""
+msgstr "Pin MISO gagal inisialisasi."
 
 #: shared-module/bitbangio/SPI.c
 msgid "MOSI pin init failed."
-msgstr ""
+msgstr "Pin MOSI gagal inisialisasi."
 
 #: shared-module/displayio/Shape.c
 #, c-format
 msgid "Maximum x value when mirrored is %d"
-msgstr ""
+msgstr "Nilai x maksimum ketika dicerminkan adalah %d"
 
 #: supervisor/shared/safe_mode.c
 msgid "MicroPython NLR jump failed. Likely memory corruption."
-msgstr ""
+msgstr "Lompatan NLR MicroPython gagal. Kemungkinan kerusakan memori."
 
 #: supervisor/shared/safe_mode.c
 msgid "MicroPython fatal error."
-msgstr ""
+msgstr "Kesalahan fatal MicroPython."
 
 #: shared-bindings/audiobusio/PDMIn.c
 msgid "Microphone startup delay must be in range 0.0 to 1.0"
diff --git a/locale/circuitpython.pot b/locale/circuitpython.pot
index 6e32ebab98..f3c9d04113 100644
--- a/locale/circuitpython.pot
+++ b/locale/circuitpython.pot
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2020-07-02 15:29+0200\n"
+"POT-Creation-Date: 2020-07-07 14:38-0500\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -1092,6 +1092,10 @@ msgstr ""
 msgid "Must provide MISO or MOSI pin"
 msgstr ""
 
+#: ports/stm/common-hal/busio/SPI.c
+msgid "Must provide SCK pin"
+msgstr ""
+
 #: shared-bindings/rgbmatrix/RGBMatrix.c
 #, c-format
 msgid "Must use a multiple of 6 rgb pins, not %d"
diff --git a/locale/es.po b/locale/es.po
index 423d673617..2778c53315 100644
--- a/locale/es.po
+++ b/locale/es.po
@@ -8,7 +8,7 @@ msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2020-07-02 15:29+0200\n"
-"PO-Revision-Date: 2020-06-29 13:13+0000\n"
+"PO-Revision-Date: 2020-07-07 15:59+0000\n"
 "Last-Translator: Alvaro Figueroa <alvaro@greencore.co.cr>\n"
 "Language-Team: \n"
 "Language: es\n"
@@ -69,7 +69,7 @@ msgstr ""
 
 #: ports/atmel-samd/common-hal/sdioio/SDCard.c
 msgid "%q failure: %d"
-msgstr ""
+msgstr "%q fallo: %d"
 
 #: shared-bindings/microcontroller/Pin.c
 msgid "%q in use"
@@ -100,7 +100,7 @@ msgstr "%q debe ser una tupla de longitud 2"
 
 #: ports/atmel-samd/common-hal/sdioio/SDCard.c
 msgid "%q pin invalid"
-msgstr ""
+msgstr "pin inválido %q"
 
 #: shared-bindings/fontio/BuiltinFont.c
 msgid "%q should be an int"
@@ -220,7 +220,7 @@ msgstr "'align' requiere 1 argumento"
 
 #: py/compile.c
 msgid "'async for' or 'async with' outside async function"
-msgstr ""
+msgstr "'async for' o 'async with' fuera de la función async"
 
 #: py/compile.c
 msgid "'await' outside function"
@@ -364,6 +364,8 @@ msgstr "Como máximo %d %q se puede especificar (no %d)"
 #: supervisor/shared/safe_mode.c
 msgid "Attempted heap allocation when MicroPython VM not running."
 msgstr ""
+"Se intentó asignación del montículo, sin que la VM de MicroPython esté "
+"ejecutando."
 
 #: main.c
 msgid "Auto-reload is off.\n"
@@ -416,7 +418,7 @@ msgstr "El brillo no se puede ajustar"
 #: shared-bindings/_bleio/UUID.c
 #, c-format
 msgid "Buffer + offset too small %d %d %d"
-msgstr ""
+msgstr "Búfer + compensado muy pequeños %d %d %d"
 
 #: shared-module/usb_hid/Device.c
 #, c-format
@@ -441,7 +443,7 @@ msgstr "La longitud del buffer %d es muy grande. Debe ser menor a %d"
 #: ports/atmel-samd/common-hal/sdioio/SDCard.c
 #: ports/cxd56/common-hal/sdioio/SDCard.c shared-module/sdcardio/SDCard.c
 msgid "Buffer length must be a multiple of 512"
-msgstr ""
+msgstr "El tamaño del búfer debe ser múltiplo de 512"
 
 #: shared-bindings/bitbangio/I2C.c shared-bindings/busio/I2C.c
 msgid "Buffer must be at least length 1"
@@ -464,7 +466,7 @@ msgstr "Bus pin %d ya está siendo utilizado"
 
 #: shared-bindings/_bleio/UUID.c
 msgid "Byte buffer must be 16 bytes."
-msgstr "Byte buffer debe de ser 16 bytes"
+msgstr "Búfer Byte debe de ser 16 bytes."
 
 #: shared-bindings/nvm/ByteArray.c
 msgid "Bytes must be between 0 and 255."
@@ -480,7 +482,7 @@ msgstr "Llame a super().__ init __() antes de acceder al objeto nativo."
 
 #: ports/nrf/common-hal/_bleio/Characteristic.c
 msgid "Can't set CCCD on local Characteristic"
-msgstr ""
+msgstr "No se puede configurar CCCD en la característica local"
 
 #: shared-bindings/displayio/Bitmap.c shared-bindings/pulseio/PulseIn.c
 msgid "Cannot delete values"
@@ -494,11 +496,13 @@ msgstr "No puede ser pull mientras este en modo de salida"
 
 #: ports/nrf/common-hal/microcontroller/Processor.c
 msgid "Cannot get temperature"
-msgstr "No se puede obtener la temperatura."
+msgstr "No se puede obtener la temperatura"
 
 #: shared-bindings/_bleio/Adapter.c
 msgid "Cannot have scan responses for extended, connectable advertisements."
 msgstr ""
+"No se pueden obtener respuestas de exploración para anuncios extendidos y "
+"conectables."
 
 #: ports/atmel-samd/common-hal/audioio/AudioOut.c
 msgid "Cannot output both channels on the same pin"
@@ -568,7 +572,7 @@ msgstr ""
 
 #: shared-module/bitbangio/SPI.c
 msgid "Clock pin init failed."
-msgstr "Clock pin init fallido"
+msgstr "Iniciado de pin de reloj fallido."
 
 #: shared-module/bitbangio/I2C.c
 msgid "Clock stretch too long"
@@ -585,7 +589,7 @@ msgstr "Entrada de columna debe ser digitalio.DigitalInOut"
 #: shared-bindings/displayio/FourWire.c shared-bindings/displayio/I2CDisplay.c
 #: shared-bindings/displayio/ParallelBus.c
 msgid "Command must be an int between 0 and 255"
-msgstr "Command debe estar entre 0 y 255."
+msgstr "Command debe ser un int entre 0 y 255"
 
 #: shared-bindings/_bleio/Connection.c
 msgid ""
@@ -609,7 +613,7 @@ msgstr "No se pudo inicializar el GNSS"
 
 #: ports/cxd56/common-hal/sdioio/SDCard.c
 msgid "Could not initialize SDCard"
-msgstr ""
+msgstr "No se pudo inicializar SDCard"
 
 #: ports/atmel-samd/common-hal/busio/UART.c ports/cxd56/common-hal/busio/UART.c
 msgid "Could not initialize UART"
@@ -663,7 +667,7 @@ msgstr "No se pudo asignar el segundo buffer"
 
 #: supervisor/shared/safe_mode.c
 msgid "Crash into the HardFault_Handler."
-msgstr ""
+msgstr "Choque contra el HardFault_Handler."
 
 #: ports/stm/common-hal/analogio/AnalogOut.c
 msgid "DAC Channel Init Error"
@@ -768,16 +772,16 @@ msgstr "No se admiten anuncios extendidos con respuesta de escaneo."
 
 #: extmod/ulab/code/fft.c
 msgid "FFT is defined for ndarrays only"
-msgstr ""
+msgstr "FFT se define solo para ndarrays"
 
 #: shared-bindings/ps2io/Ps2.c
 msgid "Failed sending command."
 msgstr "Fallo enviando comando"
 
 #: ports/nrf/sd_mutex.c
-#, fuzzy, c-format
+#, c-format
 msgid "Failed to acquire mutex, err 0x%04x"
-msgstr "No se puede adquirir el mutex, status: 0x%08lX"
+msgstr "No se puede adquirir el mutex, error 0x%04x"
 
 #: ports/mimxrt10xx/common-hal/busio/UART.c ports/nrf/common-hal/busio/UART.c
 msgid "Failed to allocate RX buffer"
@@ -889,7 +893,7 @@ msgstr "Cifrado insuficiente"
 
 #: ports/stm/common-hal/busio/UART.c
 msgid "Internal define error"
-msgstr ""
+msgstr "Error interno de definición"
 
 #: shared-module/rgbmatrix/RGBMatrix.c
 #, c-format
@@ -898,7 +902,7 @@ msgstr "Error interno #%d"
 
 #: shared-bindings/sdioio/SDCard.c
 msgid "Invalid %q"
-msgstr ""
+msgstr "%q inválido"
 
 #: ports/atmel-samd/common-hal/audiobusio/I2SOut.c
 #: ports/atmel-samd/common-hal/audiobusio/PDMIn.c
@@ -1033,7 +1037,7 @@ msgstr "Modo de ejecución inválido."
 
 #: shared-module/_bleio/Attribute.c
 msgid "Invalid security_mode"
-msgstr ""
+msgstr "Modo de seguridad no válido"
 
 #: shared-bindings/audiomixer/Mixer.c
 msgid "Invalid voice"
@@ -1090,7 +1094,7 @@ msgstr "Valor máximo de x cuando se refleja es %d"
 
 #: supervisor/shared/safe_mode.c
 msgid "MicroPython NLR jump failed. Likely memory corruption."
-msgstr ""
+msgstr "MicroPython NLR jump falló. Probable corrupción de la memoria."
 
 #: supervisor/shared/safe_mode.c
 msgid "MicroPython fatal error."
@@ -1115,7 +1119,7 @@ msgstr "Debe proporcionar un pin MISO o MOSI"
 #: shared-bindings/rgbmatrix/RGBMatrix.c
 #, c-format
 msgid "Must use a multiple of 6 rgb pins, not %d"
-msgstr ""
+msgstr "Debe usar un múltiplo de 6 pines rgb, no %d"
 
 #: py/parse.c
 msgid "Name too long"
@@ -1123,7 +1127,7 @@ msgstr "Nombre muy largo"
 
 #: ports/nrf/common-hal/_bleio/Characteristic.c
 msgid "No CCCD for this Characteristic"
-msgstr ""
+msgstr "No hay CCCD para esta característica"
 
 #: ports/atmel-samd/common-hal/analogio/AnalogOut.c
 #: ports/stm/common-hal/analogio/AnalogOut.c
@@ -1214,7 +1218,7 @@ msgstr "No hay temporizador disponible"
 
 #: supervisor/shared/safe_mode.c
 msgid "Nordic Soft Device failure assertion."
-msgstr ""
+msgstr "fallo de aserción de dispositivo Nordic Soft."
 
 #: ports/nrf/common-hal/_bleio/__init__.c
 #: shared-bindings/_bleio/CharacteristicBuffer.c
@@ -1255,6 +1259,8 @@ msgid ""
 "Only monochrome, indexed 4bpp or 8bpp, and 16bpp or greater BMPs supported: "
 "%d bpp given"
 msgstr ""
+"Solo se admiten BMP monocromáticos, indexados de 4 bpp u 8 bpp y 16 bpp o "
+"más: %d bpp proporcionados"
 
 #: shared-bindings/audiobusio/PDMIn.c
 msgid "Oversample must be multiple of 8."
@@ -1325,7 +1331,7 @@ msgstr "Pop de un buffer Ps2 vacio"
 
 #: shared-bindings/_bleio/Adapter.c
 msgid "Prefix buffer must be on the heap"
-msgstr ""
+msgstr "El búfer de prefijo debe estar en el montículo"
 
 #: main.c
 msgid "Press any key to enter the REPL. Use CTRL-D to reload."
@@ -1412,7 +1418,7 @@ msgstr "Ejecutando en modo seguro! No se esta ejecutando el código guardado.\n"
 
 #: shared-module/sdcardio/SDCard.c
 msgid "SD card CSD format not supported"
-msgstr ""
+msgstr "Sin capacidad para formato CSD para tarjeta SD"
 
 #: ports/atmel-samd/common-hal/busio/I2C.c
 #: ports/mimxrt10xx/common-hal/busio/I2C.c ports/nrf/common-hal/busio/I2C.c
@@ -1484,7 +1490,7 @@ msgstr "Suministre al menos un pin UART"
 
 #: shared-bindings/gnss/GNSS.c
 msgid "System entry must be gnss.SatelliteSystem"
-msgstr ""
+msgstr "La entrada del sistema debe ser gnss.SatelliteSystem"
 
 #: ports/stm/common-hal/microcontroller/Processor.c
 msgid "Temperature read timed out"
@@ -1495,6 +1501,8 @@ msgid ""
 "The CircuitPython heap was corrupted because the stack was too small.\n"
 "Please increase the stack size if you know how, or if not:"
 msgstr ""
+"El montículo de CircuitPython se dañó porque la pila era demasiado pequeña.\n"
+"Aumente el tamaño de la pila si sabe cómo, o si no:"
 
 #: supervisor/shared/safe_mode.c
 msgid ""
@@ -1654,7 +1662,7 @@ msgstr "Tipo de uuid nrfx inesperado"
 #: ports/nrf/common-hal/_bleio/__init__.c
 #, c-format
 msgid "Unknown gatt error: 0x%04x"
-msgstr ""
+msgstr "Error de gatt desconocido: 0x%04x"
 
 #: supervisor/shared/safe_mode.c
 msgid "Unknown reason."
@@ -1729,22 +1737,25 @@ msgstr "ADVERTENCIA: El nombre de archivo de tu código tiene dos extensiones\n"
 #: shared-bindings/watchdog/WatchDogTimer.c
 msgid "WatchDogTimer cannot be deinitialized once mode is set to RESET"
 msgstr ""
+"WatchDogTimer no se puede desinicializar luego de definirse en modo RESET"
 
 #: shared-bindings/watchdog/WatchDogTimer.c
 msgid "WatchDogTimer is not currently running"
-msgstr ""
+msgstr "WatchDogTimer no se está ejecutando en este momento"
 
 #: shared-bindings/watchdog/WatchDogTimer.c
 msgid "WatchDogTimer.mode cannot be changed once set to WatchDogMode.RESET"
 msgstr ""
+"WatchDogTimer.mode no se puede modificar luego de configurar WatchDogMode."
+"RESET"
 
 #: shared-bindings/watchdog/WatchDogTimer.c
 msgid "WatchDogTimer.timeout must be greater than 0"
-msgstr ""
+msgstr "WatchDogTimer.timeout debe ser mayor a 0"
 
 #: supervisor/shared/safe_mode.c
 msgid "Watchdog timer expired."
-msgstr ""
+msgstr "Temporizador de perro guardián expirado."
 
 #: py/builtinhelp.c
 #, c-format
@@ -1764,7 +1775,7 @@ msgstr ""
 
 #: ports/nrf/common-hal/_bleio/PacketBuffer.c
 msgid "Writes not supported on Characteristic"
-msgstr ""
+msgstr "Escrituras no admitidas en la característica"
 
 #: supervisor/shared/safe_mode.c
 msgid "You are in safe mode: something unanticipated happened.\n"
@@ -2056,7 +2067,7 @@ msgstr ""
 
 #: shared-module/sdcardio/SDCard.c
 msgid "can't set 512 block size"
-msgstr ""
+msgstr "no se puede definir un tamaño de bloque de 512"
 
 #: py/objnamedtuple.c
 msgid "can't set attribute"
@@ -2110,7 +2121,7 @@ msgstr "no se puede reformar el arreglo (forma de entrada/salida incompatible)"
 
 #: py/emitnative.c
 msgid "casting"
-msgstr ""
+msgstr "convirtiendo tipo"
 
 #: shared-bindings/_stage/Text.c
 msgid "chars buffer too small"
@@ -2170,27 +2181,27 @@ msgstr "conversión a objeto"
 
 #: extmod/ulab/code/filter.c
 msgid "convolve arguments must be linear arrays"
-msgstr ""
+msgstr "los argumentos para convolve deben ser arreglos lineares"
 
 #: extmod/ulab/code/filter.c
 msgid "convolve arguments must be ndarrays"
-msgstr ""
+msgstr "los argumentos para convolve deben ser ndarrays"
 
 #: extmod/ulab/code/filter.c
 msgid "convolve arguments must not be empty"
-msgstr ""
+msgstr "los argumentos para convolve no deben estar vacíos"
 
 #: extmod/ulab/code/ndarray.c
 msgid "could not broadast input array from shape"
-msgstr ""
+msgstr "no se pudo anunciar la matriz de entrada desde la forma"
 
 #: extmod/ulab/code/poly.c
 msgid "could not invert Vandermonde matrix"
-msgstr ""
+msgstr "no se pudo invertir la matriz de Vandermonde"
 
 #: shared-module/sdcardio/SDCard.c
 msgid "couldn't determine SD card version"
-msgstr ""
+msgstr "no se pudo determinar la versión de la tarjeta SD"
 
 #: extmod/ulab/code/approx.c
 msgid "data must be iterable"
@@ -2202,7 +2213,7 @@ msgstr "los datos deben ser de igual tamaño"
 
 #: extmod/ulab/code/numerical.c
 msgid "ddof must be smaller than length of data set"
-msgstr ""
+msgstr "ddof debe ser menor que la longitud del conjunto de datos"
 
 #: py/parsenum.c
 msgid "decimal numbers not supported"
@@ -2233,7 +2244,7 @@ msgstr "la secuencia de actualizacion del dict tiene una longitud incorrecta"
 
 #: extmod/ulab/code/numerical.c
 msgid "diff argument must be an ndarray"
-msgstr ""
+msgstr "El argumento diff debe ser un ndarray"
 
 #: py/modmath.c py/objfloat.c py/objint_longlong.c py/objint_mpz.c py/runtime.c
 #: shared-bindings/math/__init__.c
@@ -2307,23 +2318,23 @@ msgstr "argumento posicional adicional dado"
 
 #: py/parse.c
 msgid "f-string expression part cannot include a '#'"
-msgstr ""
+msgstr "La parte de expresión f-string no puede incluir un '#'"
 
 #: py/parse.c
 msgid "f-string expression part cannot include a backslash"
-msgstr ""
+msgstr "La parte de expresión f-string no puede incluir una barra invertida"
 
 #: py/parse.c
 msgid "f-string: empty expression not allowed"
-msgstr ""
+msgstr "cadena-f: expresión vacía no permitida"
 
 #: py/parse.c
 msgid "f-string: expecting '}'"
-msgstr ""
+msgstr "f-string: esperando '}'"
 
 #: py/parse.c
 msgid "f-string: single '}' is not allowed"
-msgstr ""
+msgstr "cadena-f: solo '}' no está permitido"
 
 #: shared-bindings/audiocore/WaveFile.c shared-bindings/audiomp3/MP3Decoder.c
 #: shared-bindings/displayio/OnDiskBitmap.c
@@ -2356,11 +2367,11 @@ msgstr "primer argumento para super() debe ser de tipo"
 
 #: extmod/ulab/code/ndarray.c
 msgid "flattening order must be either 'C', or 'F'"
-msgstr ""
+msgstr "el orden de aplanamiento debe ser 'C' o 'F'"
 
 #: extmod/ulab/code/numerical.c
 msgid "flip argument must be an ndarray"
-msgstr ""
+msgstr "el argumento invertido debe ser un ndarray"
 
 #: py/objint.c
 msgid "float too big"
@@ -2393,7 +2404,7 @@ msgstr "la función tiene múltiples valores para el argumento '%q'"
 
 #: extmod/ulab/code/approx.c
 msgid "function has the same sign at the ends of interval"
-msgstr ""
+msgstr "la función tiene el mismo signo a extremos del intervalo"
 
 #: extmod/ulab/code/compare.c
 msgid "function is implemented for scalars and ndarrays only"
@@ -2531,7 +2542,7 @@ msgstr "Entero requerido"
 
 #: extmod/ulab/code/approx.c
 msgid "interp is defined for 1D arrays of equal length"
-msgstr ""
+msgstr "interp está definido para arreglos de 1D del mismo tamaño"
 
 #: shared-bindings/_bleio/Adapter.c
 #, c-format
@@ -2656,7 +2667,7 @@ msgstr "long int no soportado en esta compilación"
 
 #: py/parse.c
 msgid "malformed f-string"
-msgstr ""
+msgstr "cadena-f mal formada"
 
 #: shared-bindings/_stage/Layer.c
 msgid "map buffer too small"
@@ -2668,17 +2679,17 @@ msgstr "error de dominio matemático"
 
 #: extmod/ulab/code/linalg.c
 msgid "matrix dimensions do not match"
-msgstr ""
+msgstr "las dimensiones de la matriz no coinciden"
 
 #: extmod/ulab/code/linalg.c
 msgid "matrix is not positive definite"
-msgstr ""
+msgstr "matrix no es definida positiva"
 
 #: ports/nrf/common-hal/_bleio/Characteristic.c
 #: ports/nrf/common-hal/_bleio/Descriptor.c
 #, c-format
 msgid "max_length must be 0-%d when fixed_length is %s"
-msgstr ""
+msgstr "max_length debe ser 0-%d cuando fixed_length es %s"
 
 #: py/runtime.c
 msgid "maximum recursion depth exceeded"
@@ -2699,7 +2710,7 @@ msgstr "módulo no encontrado"
 
 #: extmod/ulab/code/poly.c
 msgid "more degrees of freedom than data points"
-msgstr ""
+msgstr "más grados de libertad que los puntos de datos"
 
 #: py/compile.c
 msgid "multiple *x in assignment"
@@ -2723,7 +2734,7 @@ msgstr "debe utilizar argumento de palabra clave para la función clave"
 
 #: extmod/ulab/code/numerical.c
 msgid "n must be between 0, and 9"
-msgstr ""
+msgstr "n debe estar entre 0 y 9"
 
 #: py/runtime.c
 msgid "name '%q' is not defined"
@@ -2756,7 +2767,7 @@ msgstr "cuenta de corrimientos negativo"
 
 #: shared-module/sdcardio/SDCard.c
 msgid "no SD card"
-msgstr ""
+msgstr "no hay tarjeta SD"
 
 #: py/vm.c
 msgid "no active exception to reraise"
@@ -2777,11 +2788,11 @@ msgstr "ningún módulo se llama '%q'"
 #: shared-bindings/displayio/FourWire.c shared-bindings/displayio/I2CDisplay.c
 #: shared-bindings/displayio/ParallelBus.c
 msgid "no reset pin available"
-msgstr ""
+msgstr "no hay pin de reinicio disponible"
 
 #: shared-module/sdcardio/SDCard.c
 msgid "no response from SD card"
-msgstr ""
+msgstr "no hay respuesta de la tarjeta SD"
 
 #: py/runtime.c
 msgid "no such attribute"
@@ -2789,7 +2800,7 @@ msgstr "no hay tal atributo"
 
 #: ports/nrf/common-hal/_bleio/Connection.c
 msgid "non-UUID found in service_uuids_whitelist"
-msgstr ""
+msgstr "no UUID encontrado en service_uuids_whitelist"
 
 #: py/compile.c
 msgid "non-default argument follows default argument"
@@ -2824,11 +2835,11 @@ msgstr "no suficientes argumentos para format string"
 
 #: extmod/ulab/code/poly.c
 msgid "number of arguments must be 2, or 3"
-msgstr ""
+msgstr "el número de argumentos debe ser 2 o 3"
 
 #: extmod/ulab/code/create.c
 msgid "number of points must be at least 2"
-msgstr ""
+msgstr "el número de puntos debe ser al menos 2"
 
 #: py/obj.c
 #, c-format
@@ -2881,17 +2892,16 @@ msgid "odd-length string"
 msgstr "string de longitud impar"
 
 #: py/objstr.c py/objstrunicode.c
-#, fuzzy
 msgid "offset out of bounds"
-msgstr "address fuera de límites"
+msgstr "offset fuera de límites"
 
 #: ports/nrf/common-hal/audiobusio/PDMIn.c
 msgid "only bit_depth=16 is supported"
-msgstr ""
+msgstr "solo se admite bit_depth=16"
 
 #: ports/nrf/common-hal/audiobusio/PDMIn.c
 msgid "only sample_rate=16000 is supported"
-msgstr ""
+msgstr "solo se admite sample_rate=16000"
 
 #: py/objarray.c py/objstr.c py/objstrunicode.c py/objtuple.c
 #: shared-bindings/nvm/ByteArray.c
@@ -2901,15 +2911,15 @@ msgstr "solo se admiten segmentos con step=1 (alias None)"
 #: extmod/ulab/code/compare.c extmod/ulab/code/ndarray.c
 #: extmod/ulab/code/vectorise.c
 msgid "operands could not be broadcast together"
-msgstr ""
+msgstr "los operandos no se pueden transmitir juntos"
 
 #: extmod/ulab/code/numerical.c
 msgid "operation is not implemented on ndarrays"
-msgstr ""
+msgstr "la operación no está implementada para ndarrays"
 
 #: extmod/ulab/code/ndarray.c
 msgid "operation is not supported for given type"
-msgstr ""
+msgstr "la operación no es compatible para un tipo dado"
 
 #: py/modbuiltins.c
 msgid "ord expects a character"
@@ -2958,7 +2968,7 @@ msgstr "pixel_shader debe ser displayio.Palette o displayio.ColorConverter"
 
 #: shared-module/vectorio/Polygon.c
 msgid "polygon can only be registered in one parent"
-msgstr ""
+msgstr "el polígono solo se puede registrar en uno de los padres"
 
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 #: ports/cxd56/common-hal/pulseio/PulseIn.c
@@ -2993,11 +3003,11 @@ msgstr "desbordamiento de cola(queue)"
 
 #: py/parse.c
 msgid "raw f-strings are not implemented"
-msgstr ""
+msgstr "no está implementado cadenas-f sin procesar"
 
 #: extmod/ulab/code/fft.c
 msgid "real and imaginary parts must be of equal length"
-msgstr ""
+msgstr "las partes reales e imaginarias deben ser de igual longitud"
 
 #: py/builtinimport.c
 msgid "relative import"
@@ -3019,16 +3029,16 @@ msgstr "retorno esperado '%q' pero se obtuvo '%q'"
 #: shared-bindings/rgbmatrix/RGBMatrix.c
 #, c-format
 msgid "rgb_pins[%d] duplicates another pin assignment"
-msgstr ""
+msgstr "rgb_pins[%d] duplica otra asignación de pin"
 
 #: shared-bindings/rgbmatrix/RGBMatrix.c
 #, c-format
 msgid "rgb_pins[%d] is not on the same port as clock"
-msgstr ""
+msgstr "rgb_pins[%d] no está en el mismo puerto que el reloj"
 
 #: extmod/ulab/code/ndarray.c
 msgid "right hand side must be an ndarray, or a scalar"
-msgstr ""
+msgstr "el lado derecho debe ser un ndarray o escalar"
 
 #: py/objstr.c
 msgid "rsplit(None,n)"
@@ -3048,7 +3058,7 @@ msgstr "frecuencia de muestreo fuera de rango"
 
 #: py/modmicropython.c
 msgid "schedule stack full"
-msgstr ""
+msgstr "pila de horario llena"
 
 #: lib/utils/pyexec.c py/builtinimport.c
 msgid "script compilation not supported"
@@ -3056,7 +3066,7 @@ msgstr "script de compilación no soportado"
 
 #: extmod/ulab/code/ndarray.c
 msgid "shape must be a 2-tuple"
-msgstr ""
+msgstr "la forma debe ser una tupla de 2"
 
 #: py/objstr.c
 msgid "sign not allowed in string format specifier"
@@ -3072,7 +3082,7 @@ msgstr "un solo '}' encontrado en format string"
 
 #: extmod/ulab/code/linalg.c
 msgid "size is defined for ndarrays only"
-msgstr ""
+msgstr "el tamaño se define solo para ndarrays"
 
 #: shared-bindings/time/__init__.c
 msgid "sleep length must be non-negative"
@@ -3080,7 +3090,7 @@ msgstr "la longitud de sleep no puede ser negativa"
 
 #: extmod/ulab/code/ndarray.c
 msgid "slice step can't be zero"
-msgstr ""
+msgstr "el tamaño de la división no puede ser cero"
 
 #: py/objslice.c py/sequence.c
 msgid "slice step cannot be zero"
@@ -3096,28 +3106,27 @@ msgstr "reinicio suave\n"
 
 #: extmod/ulab/code/numerical.c
 msgid "sort argument must be an ndarray"
-msgstr ""
+msgstr "argumento de ordenado debe ser un ndarray"
 
 #: extmod/ulab/code/filter.c
 msgid "sos array must be of shape (n_section, 6)"
-msgstr ""
+msgstr "el arreglo sos debe de forma (n_section, 6)"
 
 #: extmod/ulab/code/filter.c
 msgid "sos[:, 3] should be all ones"
-msgstr ""
+msgstr "sos[:, 3] deberían ser todos unos"
 
 #: extmod/ulab/code/filter.c
 msgid "sosfilt requires iterable arguments"
-msgstr ""
+msgstr "sosfilt requiere argumentos iterables"
 
 #: py/objstr.c
 msgid "start/end indices"
 msgstr "índices inicio/final"
 
 #: shared-bindings/displayio/Shape.c
-#, fuzzy
 msgid "start_x should be an int"
-msgstr "y deberia ser un int"
+msgstr "start_x deberia ser un int"
 
 #: shared-bindings/random/__init__.c
 msgid "step must be non-zero"
@@ -3187,10 +3196,11 @@ msgstr "time.struct_time() toma un sequencio 9"
 #: ports/nrf/common-hal/watchdog/WatchDogTimer.c
 msgid "timeout duration exceeded the maximum supported value"
 msgstr ""
+"la duración de tiempo de espera ha excedido la capacidad máxima del valor"
 
 #: shared-bindings/busio/UART.c
 msgid "timeout must be 0.0-100.0 seconds"
-msgstr ""
+msgstr "el tiempo de espera debe ser 0.0-100.0 segundos"
 
 #: shared-bindings/_bleio/CharacteristicBuffer.c
 msgid "timeout must be >= 0.0"
@@ -3198,11 +3208,11 @@ msgstr "tiempo muerto debe ser >= 0.0"
 
 #: shared-module/sdcardio/SDCard.c
 msgid "timeout waiting for v1 card"
-msgstr ""
+msgstr "tiempo de espera agotado esperando por tarjeta v1"
 
 #: shared-module/sdcardio/SDCard.c
 msgid "timeout waiting for v2 card"
-msgstr ""
+msgstr "tiempo de espera agotado esperando a tarjeta v2"
 
 #: shared-bindings/time/__init__.c
 msgid "timestamp out of range for platform time_t"
@@ -3214,7 +3224,7 @@ msgstr "demasiados argumentos provistos con el formato dado"
 
 #: extmod/ulab/code/ndarray.c
 msgid "too many indices"
-msgstr ""
+msgstr "demasiados índices"
 
 #: py/runtime.c
 #, c-format
@@ -3343,31 +3353,31 @@ msgstr "tipos no soportados para %q: '%s', '%s'"
 #: py/objint.c
 #, c-format
 msgid "value must fit in %d byte(s)"
-msgstr ""
+msgstr "el valor debe caber en %d byte(s)"
 
 #: shared-bindings/displayio/Bitmap.c
 msgid "value_count must be > 0"
-msgstr ""
+msgstr "value_count debe ser > 0"
 
 #: shared-bindings/watchdog/WatchDogTimer.c
 msgid "watchdog timeout must be greater than 0"
-msgstr ""
+msgstr "el tiempo de espera del perro guardián debe ser mayor a 0"
 
 #: shared-bindings/_bleio/Adapter.c
 msgid "window must be <= interval"
-msgstr ""
+msgstr "la ventana debe ser <= intervalo"
 
 #: extmod/ulab/code/linalg.c
 msgid "wrong argument type"
-msgstr ""
+msgstr "tipo de argumento incorrecto"
 
 #: extmod/ulab/code/ndarray.c
 msgid "wrong index type"
-msgstr ""
+msgstr "tipo de índice incorrecto"
 
 #: extmod/ulab/code/vectorise.c
 msgid "wrong input type"
-msgstr ""
+msgstr "tipo de entrada incorrecta"
 
 #: py/objstr.c
 msgid "wrong number of arguments"
@@ -3379,25 +3389,23 @@ msgstr "numero erroneo de valores a descomprimir"
 
 #: extmod/ulab/code/ndarray.c
 msgid "wrong operand type"
-msgstr ""
+msgstr "tipo de operando incorrecto"
 
 #: extmod/ulab/code/vectorise.c
 msgid "wrong output type"
-msgstr ""
+msgstr "tipo de salida incorrecta"
 
 #: shared-module/displayio/Shape.c
-#, fuzzy
 msgid "x value out of bounds"
-msgstr "address fuera de límites"
+msgstr "valor x fuera de límites"
 
 #: shared-bindings/displayio/Shape.c
 msgid "y should be an int"
 msgstr "y deberia ser un int"
 
 #: shared-module/displayio/Shape.c
-#, fuzzy
 msgid "y value out of bounds"
-msgstr "address fuera de límites"
+msgstr "valor y fuera de límites"
 
 #: py/objrange.c
 msgid "zero step"
@@ -3405,15 +3413,15 @@ msgstr "paso cero"
 
 #: extmod/ulab/code/filter.c
 msgid "zi must be an ndarray"
-msgstr ""
+msgstr "zi debe ser un ndarray"
 
 #: extmod/ulab/code/filter.c
 msgid "zi must be of float type"
-msgstr ""
+msgstr "zi debe ser de tipo flotante"
 
 #: extmod/ulab/code/filter.c
 msgid "zi must be of shape (n_section, 2)"
-msgstr ""
+msgstr "zi debe ser una forma (n_section,2)"
 
 #~ msgid "AP required"
 #~ msgstr "AP requerido"
diff --git a/ports/atmel-samd/boards/seeeduino_wio_terminal/board.c b/ports/atmel-samd/boards/seeeduino_wio_terminal/board.c
index 0f60736a24..b7fc736eb0 100644
--- a/ports/atmel-samd/boards/seeeduino_wio_terminal/board.c
+++ b/ports/atmel-samd/boards/seeeduino_wio_terminal/board.c
@@ -27,8 +27,85 @@
 #include "boards/board.h"
 #include "mpconfigboard.h"
 #include "hal/include/hal_gpio.h"
+#include "shared-bindings/busio/SPI.h"
+#include "shared-bindings/displayio/FourWire.h"
+#include "shared-module/displayio/__init__.h"
+#include "shared-module/displayio/mipi_constants.h"
+
+displayio_fourwire_obj_t board_display_obj;
+
+uint8_t display_init_sequence[] = {
+    0x01, 0x80, 0x80, // Software reset then delay 0x80 (128ms)
+    0xEF, 0x03, 0x03, 0x80, 0x02,
+    0xCF, 0x03, 0x00, 0xC1, 0x30,
+    0xED, 0x04, 0x64, 0x03, 0x12, 0x81,
+    0xE8, 0x03, 0x85, 0x00, 0x78,
+    0xCB, 0x05, 0x39, 0x2C, 0x00, 0x34, 0x02,
+    0xF7, 0x01, 0x20,
+    0xEA, 0x02, 0x00, 0x00,
+    0xc0, 0x01, 0x23, // Power control VRH[5:0]
+    0xc1, 0x01, 0x10, // Power control SAP[2:0];BT[3:0]
+    0xc5, 0x02, 0x3e, 0x28, // VCM control
+    0xc7, 0x01, 0x86, // VCM control2
+    0x36, 0x01, 0x38, // Memory Access Control
+    0x37, 0x01, 0x00, // Vertical scroll zero
+    0x3a, 0x01, 0x55, // COLMOD: Pixel Format Set
+    0xb1, 0x02, 0x00, 0x18, // Frame Rate Control (In Normal Mode/Full Colors)
+    0xb6, 0x03, 0x08, 0x82, 0x27, // Display Function Control
+    0xF2, 0x01, 0x00, // 3Gamma Function Disable
+    0x26, 0x01, 0x01, // Gamma curve selected
+    0xe0, 0x0f, 0x0F, 0x31, 0x2B, 0x0C, 0x0E, 0x08, 0x4E, 0xF1, 0x37, 0x07, 0x10, 0x03, 0x0E, 0x09, 0x00, // Set Gamma
+    0xe1, 0x0f, 0x00, 0x0E, 0x14, 0x03, 0x11, 0x07, 0x31, 0xC1, 0x48, 0x08, 0x0F, 0x0C, 0x31, 0x36, 0x0F, // Set Gamma
+    0x11, 0x80, 0x78, // Exit Sleep then delay 0x78 (120ms)
+    0x29, 0x80, 0x78, // Display on then delay 0x78 (120ms)
+};
 
 void board_init(void) {
+    busio_spi_obj_t* spi = &displays[0].fourwire_bus.inline_bus;
+    common_hal_busio_spi_construct(spi, &pin_PB20, &pin_PB19, NULL);
+    common_hal_busio_spi_never_reset(spi);
+
+    displayio_fourwire_obj_t* bus = &displays[0].fourwire_bus;
+    bus->base.type = &displayio_fourwire_type;
+    common_hal_displayio_fourwire_construct(bus,
+        spi,
+        &pin_PC06, // TFT_DC Command or data
+        &pin_PB21, // TFT_CS Chip select
+        &pin_PC07, // TFT_RST Reset
+        60000000, // Baudrate
+        0, // Polarity
+        0); // Phase
+
+    displayio_display_obj_t* display = &displays[0].display;
+    display->base.type = &displayio_display_type;
+    common_hal_displayio_display_construct(display,
+        bus,
+        320, // Width
+        240, // Height
+        0, // column start
+        0, // row start
+        180, // rotation
+        16, // Color depth
+        false, // Grayscale
+        false, // pixels in a byte share a row. Only valid for depths < 8
+        1, // bytes per cell. Only valid for depths < 8
+        false, // reverse_pixels_in_byte. Only valid for depths < 8
+        true, // reverse_pixels_in_word
+        MIPI_COMMAND_SET_COLUMN_ADDRESS, // Set column command
+        MIPI_COMMAND_SET_PAGE_ADDRESS, // Set row command
+        MIPI_COMMAND_WRITE_MEMORY_START, // Write memory command
+        0x37, // set vertical scroll command
+        display_init_sequence,
+        sizeof(display_init_sequence),
+        &pin_PC05,  // backlight pin
+        NO_BRIGHTNESS_COMMAND,
+        1.0f, // brightness (ignored)
+        true, // auto_brightness
+        false, // single_byte_bounds
+        false, // data_as_commands
+        true, // auto_refresh
+        60, // native_frames_per_second
+        true); // backlight_on_high
 }
 
 bool board_requests_safe_mode(void) {
diff --git a/ports/atmel-samd/boards/seeeduino_wio_terminal/pins.c b/ports/atmel-samd/boards/seeeduino_wio_terminal/pins.c
index 8c6260ce2c..254d730a89 100644
--- a/ports/atmel-samd/boards/seeeduino_wio_terminal/pins.c
+++ b/ports/atmel-samd/boards/seeeduino_wio_terminal/pins.c
@@ -33,9 +33,10 @@ STATIC const mp_rom_map_elem_t board_global_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_RX), MP_ROM_PTR(&pin_PB27) },
 
     // SPI pins
-    { MP_ROM_QSTR(MP_QSTR_MOSI), MP_ROM_PTR(&pin_PA02) },
-    { MP_ROM_QSTR(MP_QSTR_SCK), MP_ROM_PTR(&pin_PA03) },
-    { MP_ROM_QSTR(MP_QSTR_MISO), MP_ROM_PTR(&pin_PA00) },
+    { MP_ROM_QSTR(MP_QSTR_MOSI), MP_ROM_PTR(&pin_PB02) },
+    { MP_ROM_QSTR(MP_QSTR_SCK), MP_ROM_PTR(&pin_PB03) },
+    { MP_ROM_QSTR(MP_QSTR_MISO), MP_ROM_PTR(&pin_PB00) },
+    { MP_ROM_QSTR(MP_QSTR_CS), MP_ROM_PTR(&pin_PB01) },
 
     // I2C pins
     { MP_ROM_QSTR(MP_QSTR_SCL), MP_ROM_PTR(&pin_PA16) },
@@ -44,6 +45,43 @@ STATIC const mp_rom_map_elem_t board_global_dict_table[] = {
     // LED pins
     { MP_ROM_QSTR(MP_QSTR_LED),   MP_ROM_PTR(&pin_PA15) }, // status
 
+    // LCD Display
+    { MP_OBJ_NEW_QSTR(MP_QSTR_TFT_MISO),  MP_ROM_PTR(&pin_PB18) },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_TFT_MOSI),  MP_ROM_PTR(&pin_PB19) },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_TFT_SCK),  MP_ROM_PTR(&pin_PB20) },
+    { MP_ROM_QSTR(MP_QSTR_TFT_CS),  MP_ROM_PTR(&pin_PB21) },
+    { MP_ROM_QSTR(MP_QSTR_TFT_DC),  MP_ROM_PTR(&pin_PC06) },
+    { MP_ROM_QSTR(MP_QSTR_TFT_BACKLIGHT),  MP_ROM_PTR(&pin_PC05) },
+    { MP_ROM_QSTR(MP_QSTR_TFT_RESET),  MP_ROM_PTR(&pin_PC07) },
+
+    // SD Card
+    { MP_OBJ_NEW_QSTR(MP_QSTR_SD_MISO),  MP_ROM_PTR(&pin_PC18) },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_SD_MOSI),  MP_ROM_PTR(&pin_PC16) },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_SD_SCK),  MP_ROM_PTR(&pin_PC17) },
+    { MP_ROM_QSTR(MP_QSTR_SD_CS),  MP_ROM_PTR(&pin_PC19) },
+    { MP_ROM_QSTR(MP_QSTR_SD_DET),  MP_ROM_PTR(&pin_PC21) },
+
+    // Switch
+    { MP_OBJ_NEW_QSTR(MP_QSTR_SWITCH_UP),  MP_ROM_PTR(&pin_PD20) },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_SWITCH_LEFT),  MP_ROM_PTR(&pin_PD12) },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_SWITCH_RIGHT),  MP_ROM_PTR(&pin_PD09) },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_SWITCH_DOWN),  MP_ROM_PTR(&pin_PD08) },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_SWITCH_PRESS),  MP_ROM_PTR(&pin_PD10) },
+
+    // Button
+    { MP_OBJ_NEW_QSTR(MP_QSTR_BUTTON_1),  MP_ROM_PTR(&pin_PC26) },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_BUTTON_2),  MP_ROM_PTR(&pin_PC27) },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_BUTTON_3),  MP_ROM_PTR(&pin_PC28) },
+
+    // Special named pins
+    { MP_OBJ_NEW_QSTR(MP_QSTR_LIGHT),  MP_ROM_PTR(&pin_PD01) },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_BUZZER),  MP_ROM_PTR(&pin_PD11) },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_IR),  MP_ROM_PTR(&pin_PB31) },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_MIC),  MP_ROM_PTR(&pin_PC30) },
+    { MP_ROM_QSTR(MP_QSTR_GYROSCOPE_SCL),  MP_ROM_PTR(&pin_PA12) },
+    { MP_ROM_QSTR(MP_QSTR_GYROSCOPE_SDA),  MP_ROM_PTR(&pin_PA13) },
+    { MP_ROM_QSTR(MP_QSTR_GYROSCOPE_INT),  MP_ROM_PTR(&pin_PC21) },
+
     // Comm objects
     { MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&board_i2c_obj) },
     { MP_ROM_QSTR(MP_QSTR_SPI), MP_ROM_PTR(&board_spi_obj) },
diff --git a/ports/atmel-samd/common-hal/pulseio/PulseIn.c b/ports/atmel-samd/common-hal/pulseio/PulseIn.c
index 7ea20321b2..b825579dbe 100644
--- a/ports/atmel-samd/common-hal/pulseio/PulseIn.c
+++ b/ports/atmel-samd/common-hal/pulseio/PulseIn.c
@@ -125,6 +125,9 @@ void pulsein_interrupt_handler(uint8_t channel) {
 }
 
 void pulsein_reset() {
+#ifdef SAMD21
+    rtc_end_pulsein();
+#endif
     refcount = 0;
     pulsein_tc_index = 0xff;
     overflow_count = 0;
@@ -221,6 +224,10 @@ void common_hal_pulseio_pulsein_construct(pulseio_pulsein_obj_t* self,
 
     // Set config will enable the EIC.
     pulsein_set_config(self, true);
+#ifdef SAMD21
+    rtc_start_pulsein();
+#endif
+
 }
 
 bool common_hal_pulseio_pulsein_deinited(pulseio_pulsein_obj_t* self) {
@@ -231,6 +238,9 @@ void common_hal_pulseio_pulsein_deinit(pulseio_pulsein_obj_t* self) {
     if (common_hal_pulseio_pulsein_deinited(self)) {
         return;
     }
+#ifdef SAMD21
+    rtc_end_pulsein();
+#endif
     set_eic_handler(self->channel, EIC_HANDLER_NO_INTERRUPT);
     turn_off_eic_channel(self->channel);
     reset_pin_number(self->pin);
diff --git a/ports/atmel-samd/common-hal/pulseio/PulseIn.h b/ports/atmel-samd/common-hal/pulseio/PulseIn.h
index 89b61a83ac..99358178f2 100644
--- a/ports/atmel-samd/common-hal/pulseio/PulseIn.h
+++ b/ports/atmel-samd/common-hal/pulseio/PulseIn.h
@@ -50,5 +50,11 @@ void pulsein_reset(void);
 
 void pulsein_interrupt_handler(uint8_t channel);
 void pulsein_timer_interrupt_handler(uint8_t index);
+#ifdef SAMD21
+void rtc_set_continuous(void);
+void rtc_start_pulsein(void);
+void rtc_end_pulsein(void);
+#endif
+
 
 #endif // MICROPY_INCLUDED_ATMEL_SAMD_COMMON_HAL_PULSEIO_PULSEIN_H
diff --git a/ports/atmel-samd/supervisor/port.c b/ports/atmel-samd/supervisor/port.c
index 48bd3211b5..e892e6cde5 100644
--- a/ports/atmel-samd/supervisor/port.c
+++ b/ports/atmel-samd/supervisor/port.c
@@ -91,6 +91,23 @@
 #if CIRCUITPY_PEW
 #include "common-hal/_pew/PewPew.h"
 #endif
+volatile bool hold_interrupt = false;
+#ifdef SAMD21
+void rtc_start_pulsein(void) {
+    rtc_set_continuous();
+    hold_interrupt = true;
+}
+
+void rtc_end_pulsein(void) {
+    hold_interrupt = false;
+}
+
+void rtc_set_continuous(void) {
+    while (RTC->MODE0.STATUS.bit.SYNCBUSY);
+    RTC->MODE0.READREQ.reg = RTC_READREQ_RREQ | RTC_READREQ_RCONT | 0x0010;
+    while (RTC->MODE0.STATUS.bit.SYNCBUSY);
+}
+#endif
 
 extern volatile bool mp_msc_enabled;
 
@@ -489,6 +506,11 @@ void port_interrupt_after_ticks(uint32_t ticks) {
         // We'll interrupt sooner with an overflow.
         return;
     }
+#ifdef SAMD21
+    if (hold_interrupt) {
+        return;
+    }
+#endif
     RTC->MODE0.COMP[0].reg = current_ticks + (ticks << 4);
     RTC->MODE0.INTFLAG.reg = RTC_MODE0_INTFLAG_CMP0;
     RTC->MODE0.INTENSET.reg = RTC_MODE0_INTENSET_CMP0;
@@ -503,7 +525,7 @@ void port_sleep_until_interrupt(void) {
     }
     #endif
     common_hal_mcu_disable_interrupts();
-    if (!tud_task_event_ready()) {
+    if (!tud_task_event_ready() && !hold_interrupt) {
         __DSB();
         __WFI();
     }
diff --git a/ports/cxd56/Makefile b/ports/cxd56/Makefile
index 507d763312..3766d42228 100644
--- a/ports/cxd56/Makefile
+++ b/ports/cxd56/Makefile
@@ -62,6 +62,13 @@ SPRESENSE_SDK = spresense-exported-sdk
 
 FIRMWARE = $(SPRESENSE_SDK)/firmware
 
+BOOTLOADER_FILES += \
+	$(FIRMWARE)/AESM.espk \
+	$(FIRMWARE)/dnnrt-mp.espk \
+	$(FIRMWARE)/gnssfw.espk \
+	$(FIRMWARE)/loader.espk \
+	$(FIRMWARE)/sysutil.spk \
+
 # Platforms are: Linux, Darwin, MSYS, CYGWIN
 PLATFORM := $(firstword $(subst _, ,$(shell uname -s 2>/dev/null)))
 
@@ -91,8 +98,7 @@ INC += \
 	-I$(SPRESENSE_SDK)/nuttx/arch \
 	-I$(SPRESENSE_SDK)/nuttx/arch/chip \
 	-I$(SPRESENSE_SDK)/nuttx/arch/os \
-	-I$(SPRESENSE_SDK)/sdk/bsp/include \
-	-I$(SPRESENSE_SDK)/sdk/bsp/include/sdk \
+	-I$(SPRESENSE_SDK)/sdk/include \
 
 CFLAGS += \
 	$(INC) \
@@ -125,7 +131,7 @@ LDFLAGS = \
 	--entry=__start \
 	-nostartfiles \
 	-nodefaultlibs \
-	-T$(SPRESENSE_SDK)/nuttx/build/ramconfig.ld \
+	-T$(SPRESENSE_SDK)/nuttx/scripts/ramconfig.ld \
 	--gc-sections \
 	-Map=$(BUILD)/output.map \
 	-o $(BUILD)/firmware.elf \
@@ -133,8 +139,8 @@ LDFLAGS = \
 	-u spresense_main \
 	-u board_timerhook \
 	$(BUILD)/libmpy.a \
-	$(SPRESENSE_SDK)/sdk/libs/libapps.a \
-	$(SPRESENSE_SDK)/sdk/libs/libsdk.a \
+	$(SPRESENSE_SDK)/nuttx/libs/libapps.a \
+	$(SPRESENSE_SDK)/nuttx/libs/libnuttx.a \
 	$(LIBM) \
 	$(LIBGCC) \
 	--end-group \
@@ -213,11 +219,11 @@ $(BUILD)/firmware.spk: $(BUILD)/firmware.elf $(MKSPK)
 
 flash: $(BUILD)/firmware.spk
 	$(ECHO) "Writing $< to the board"
-	$(SPRESENSE_SDK)/sdk/tools/flash.sh -c $(SERIAL) $(BUILD)/firmware.spk
+	tools/flash_writer.py -s -c $(SERIAL) -d -b 115200 -n $(BUILD)/firmware.spk
 
 flash-bootloader: $(SPRESENSE_SDK) $(FIRMWARE)
 	$(ECHO) "Writing loader to the board"
-	$(SPRESENSE_SDK)/sdk/tools/flash.sh -l $(FIRMWARE) -c $(SERIAL)
+	tools/flash_writer.py -s -c $(SERIAL) -d -b 115200 -n $(BOOTLOADER_FILES)
 
 include $(TOP)/py/mkrules.mk
 
diff --git a/ports/cxd56/README.md b/ports/cxd56/README.md
index ec284e7421..7fa439aacb 100644
--- a/ports/cxd56/README.md
+++ b/ports/cxd56/README.md
@@ -16,7 +16,7 @@ Board features:
   * Spresense is powered by Sony's CXD5602 microcontroller (ARM® Cortex®-M4F × 6
     cores), with a clock speed of 156 MHz.
 
-Currently, Spresense port does not support GNSS, Audio and Multicore.
+Currently, Spresense port does not support Audio and Multicore.
 
 Refer to [developer.sony.com/develop/spresense/](https://developer.sony.com/develop/spresense/)
 for further information about this board.
@@ -75,7 +75,7 @@ Bootloader information:
 
 * You have to accept the End User License Agreement to be able to download and use the Spresense bootloader binary.
 
-Download the spresense binaries zip archive from: [Spresense firmware v1-4-000](https://developer.sony.com/file/download/download-spresense-firmware-v1-4-000)
+Download the spresense binaries zip archive from: [Spresense firmware v2-0-000](https://developer.sony.com/file/download/download-spresense-firmware-v2-0-000)
 
 Extract spresense binaries in your PC to ports/spresense/spresense-exported-sdk/firmware/
 
diff --git a/ports/cxd56/common-hal/pulseio/PWMOut.h b/ports/cxd56/common-hal/pulseio/PWMOut.h
index 57fc4181f0..694acc4e0c 100644
--- a/ports/cxd56/common-hal/pulseio/PWMOut.h
+++ b/ports/cxd56/common-hal/pulseio/PWMOut.h
@@ -27,7 +27,7 @@
 #ifndef MICROPY_INCLUDED_CXD56_COMMON_HAL_PULSEIO_PWMOUT_H
 #define MICROPY_INCLUDED_CXD56_COMMON_HAL_PULSEIO_PWMOUT_H
 
-#include <nuttx/drivers/pwm.h>
+#include <nuttx/timers/pwm.h>
 
 #include "common-hal/microcontroller/Pin.h"
 
diff --git a/ports/cxd56/configs/circuitpython/defconfig b/ports/cxd56/configs/circuitpython/defconfig
new file mode 100644
index 0000000000..268f7a68e9
--- /dev/null
+++ b/ports/cxd56/configs/circuitpython/defconfig
@@ -0,0 +1,171 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+# CONFIG_ARCH_LEDS is not set
+# CONFIG_CXD56_I2C0_SCUSEQ is not set
+# CONFIG_CXD56_SFC is not set
+# CONFIG_CXD56_SPI3_SCUSEQ is not set
+# CONFIG_MMCSD_MMCSUPPORT is not set
+# CONFIG_MMCSD_SPI is not set
+# CONFIG_MTD_SMART_WEAR_LEVEL is not set
+# CONFIG_NET_IPv4 is not set
+# CONFIG_NXFONTS_PACKEDMSFIRST is not set
+# CONFIG_STANDARD_SERIAL is not set
+CONFIG_ARCH="arm"
+CONFIG_ARCH_BOARD="spresense"
+CONFIG_ARCH_BOARD_SPRESENSE=y
+CONFIG_ARCH_CHIP="cxd56xx"
+CONFIG_ARCH_CHIP_CXD56XX=y
+CONFIG_ARCH_INTERRUPTSTACK=2048
+CONFIG_ARCH_MATH_H=y
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_ARMV7M_USEBASEPRI=y
+CONFIG_ASMP=y
+CONFIG_AUDIO=y
+CONFIG_AUDIOUTILS_DSP_MOUNTPT="/mnt/sd0/BIN"
+CONFIG_AUDIOUTILS_MANAGER=y
+CONFIG_AUDIOUTILS_PLAYER=y
+CONFIG_AUDIOUTILS_PLAYLIST=y
+CONFIG_AUDIOUTILS_RECORDER=y
+CONFIG_BOARDCTL_IOCTL=y
+CONFIG_BOARDCTL_POWEROFF=y
+CONFIG_BOARDCTL_RESET=y
+CONFIG_BOARDCTL_UNIQUEID=y
+CONFIG_BOARDCTL_UNIQUEID_SIZE=5
+CONFIG_BOARDCTL_USBDEVCTRL=y
+CONFIG_BOARD_CRASHDUMP=y
+CONFIG_BOARD_LATE_INITIALIZE=y
+CONFIG_BOARD_LOOPSPERMSEC=5434
+CONFIG_BOOT_RUNFROMISRAM=y
+CONFIG_BUILTIN=y
+CONFIG_CLOCK_MONOTONIC=y
+CONFIG_CXD56_ADC=y
+CONFIG_CXD56_AUDIO=y
+CONFIG_CXD56_BINARY=y
+CONFIG_CXD56_CHARGER=y
+CONFIG_CXD56_CISIF=y
+CONFIG_CXD56_GAUGE=y
+CONFIG_CXD56_GNSS=y
+CONFIG_CXD56_HPADC0=y
+CONFIG_CXD56_HPADC1=y
+CONFIG_CXD56_I2C0=y
+CONFIG_CXD56_I2C2=y
+CONFIG_CXD56_I2C=y
+CONFIG_CXD56_I2C_DRIVER=y
+CONFIG_CXD56_IMAGEPROC=y
+CONFIG_CXD56_LPADC=y
+CONFIG_CXD56_PWM0=y
+CONFIG_CXD56_PWM1=y
+CONFIG_CXD56_PWM2=y
+CONFIG_CXD56_PWM3=y
+CONFIG_CXD56_PWM=y
+CONFIG_CXD56_SDIO=y
+CONFIG_CXD56_SPI3=y
+CONFIG_CXD56_SPI5=y
+CONFIG_CXD56_SPI=y
+CONFIG_CXD56_UART2=y
+CONFIG_DEBUG_FULLOPT=y
+CONFIG_DEBUG_SYMBOLS=y
+CONFIG_DNN_RT=y
+CONFIG_DNN_RT_MP=y
+CONFIG_DRIVERS_VIDEO=y
+CONFIG_EXTERNALS_CMSIS=y
+CONFIG_FAT_LCNAMES=y
+CONFIG_FAT_LFN=y
+CONFIG_FAT_MAXFNAME=64
+CONFIG_FS_FAT=y
+CONFIG_FS_PROCFS=y
+CONFIG_FS_PROCFS_REGISTER=y
+CONFIG_FS_ROMFS=y
+CONFIG_FS_SMARTFS=y
+CONFIG_HAVE_CXX=y
+CONFIG_HAVE_CXXINITIALIZE=y
+CONFIG_LCD=y
+CONFIG_LCD_NOGETRUN=y
+CONFIG_LIBC_FLOATINGPOINT=y
+CONFIG_LIBC_IPv4_ADDRCONV=y
+CONFIG_LIBC_IPv6_ADDRCONV=y
+CONFIG_LIB_KBDCODEC=y
+CONFIG_MAX_WDOGPARMS=2
+CONFIG_MEMUTILS=y
+CONFIG_MMCSD=y
+CONFIG_MMCSD_SDIO=y
+CONFIG_MTD=y
+CONFIG_MTD_BYTE_WRITE=y
+CONFIG_MTD_SMART=y
+CONFIG_MTD_SMART_ENABLE_CRC=y
+CONFIG_MTD_SMART_FSCK=y
+CONFIG_MTD_SMART_SECTOR_SIZE=4096
+CONFIG_NAME_MAX=64
+CONFIG_NET=y
+CONFIG_NETDEVICES=y
+CONFIG_NETDEV_LATEINIT=y
+CONFIG_NET_SOCKOPTS=y
+CONFIG_NET_TCP_NO_STACK=y
+CONFIG_NET_UDP_NO_STACK=y
+CONFIG_NET_USRSOCK=y
+CONFIG_NET_USRSOCK_TCP=y
+CONFIG_NET_USRSOCK_UDP=y
+CONFIG_NFILE_STREAMS=8
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_DISABLE_LOSMART=y
+CONFIG_NSH_LINELEN=160
+CONFIG_NSH_MAXARGUMENTS=14
+CONFIG_NSH_READLINE=y
+CONFIG_PIPES=y
+CONFIG_PREALLOC_MQ_MSGS=4
+CONFIG_PREALLOC_TIMERS=4
+CONFIG_PREALLOC_WDOGS=16
+CONFIG_PWM=y
+CONFIG_RAM_SIZE=1572864
+CONFIG_RAM_START=0x0d000000
+CONFIG_READLINE_CMD_HISTORY=y
+CONFIG_READLINE_CMD_HISTORY_LINELEN=160
+CONFIG_READLINE_TABCOMPLETION=y
+CONFIG_RR_INTERVAL=200
+CONFIG_RTC=y
+CONFIG_RTC_ALARM=y
+CONFIG_RTC_DRIVER=y
+CONFIG_RTC_FREQUENCY=32768
+CONFIG_RTC_HIRES=y
+CONFIG_SCHED_CHILD_STATUS=y
+CONFIG_SCHED_HAVE_PARENT=y
+CONFIG_SCHED_HPWORK=y
+CONFIG_SCHED_LPNTHREADS=3
+CONFIG_SCHED_LPWORK=y
+CONFIG_SCHED_WAITPID=y
+CONFIG_SDCLONE_DISABLE=y
+CONFIG_SDIO_MUXBUS=y
+CONFIG_SDK_AUDIO=y
+CONFIG_SERIAL_TERMIOS=y
+CONFIG_SMARTFS_ALIGNED_ACCESS=y
+CONFIG_SMARTFS_MAXNAMLEN=30
+CONFIG_SMARTFS_MULTI_ROOT_DIRS=y
+CONFIG_SPECIFIC_DRIVERS=y
+CONFIG_SPI=y
+CONFIG_SPRESENSE_EXTENSION=y
+CONFIG_START_DAY=6
+CONFIG_START_MONTH=12
+CONFIG_START_YEAR=2011
+CONFIG_SYSTEMTICK_HOOK=y
+CONFIG_SYSTEM_CLE=y
+CONFIG_SYSTEM_NSH=y
+CONFIG_SYSTEM_NSH_CXXINITIALIZE=y
+CONFIG_UART1_RXBUFSIZE=1024
+CONFIG_UART1_SERIAL_CONSOLE=y
+CONFIG_UART1_TXBUFSIZE=1024
+CONFIG_UART2_IFLOWCONTROL=y
+CONFIG_UART2_OFLOWCONTROL=y
+CONFIG_USBDEV=y
+CONFIG_USBDEV_DMA=y
+CONFIG_USBDEV_DUALSPEED=y
+CONFIG_USEC_PER_TICK=1000
+CONFIG_USERMAIN_STACKSIZE=1064960
+CONFIG_USER_ENTRYPOINT="spresense_main"
+CONFIG_VIDEO_ISX012=y
+CONFIG_VIDEO_STREAM=y
diff --git a/ports/cxd56/spresense-exported-sdk b/ports/cxd56/spresense-exported-sdk
index 7f6568c7f4..c991d439fa 160000
--- a/ports/cxd56/spresense-exported-sdk
+++ b/ports/cxd56/spresense-exported-sdk
@@ -1 +1 @@
-Subproject commit 7f6568c7f4898cdb24a2f06040784a836050686e
+Subproject commit c991d439fac9c23cfcac0da16fe8055f818d40a4
diff --git a/ports/cxd56/tools/flash_writer.py b/ports/cxd56/tools/flash_writer.py
new file mode 100755
index 0000000000..840f10c32f
--- /dev/null
+++ b/ports/cxd56/tools/flash_writer.py
@@ -0,0 +1,580 @@
+#! /usr/bin/env python3
+
+# Copyright (C) 2018 Sony Semiconductor Solutions Corp.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+
+import time
+import sys
+import os
+import struct
+import glob
+import fnmatch
+import errno
+import telnetlib
+import argparse
+import shutil
+import subprocess
+import re
+import xmodem
+
+import_serial_module = True
+
+# When SDK release, plase set SDK_RELEASE as True.
+SDK_RELEASE = False
+
+if SDK_RELEASE :
+	PRINT_RAW_COMMAND = False
+	REBOOT_AT_END = True
+else :
+	PRINT_RAW_COMMAND = True
+	REBOOT_AT_END = True
+
+try:
+	import serial
+except:
+	import_serial_module = False
+
+# supported environment various
+# CXD56_PORT
+# CXD56_TELNETSRV_PORT
+# CXD56_TELNETSRV_IP
+
+PROTOCOL_SERIAL = 0
+PROTOCOL_TELNET = 1
+
+MAX_DOT_COUNT = 70
+
+# configure parameters and default value
+class ConfigArgs:
+	PROTOCOL_TYPE = None
+	SERIAL_PORT = "COM1"
+	SERVER_PORT = 4569
+	SERVER_IP = "localhost"
+	EOL = bytes([10])
+	WAIT_RESET = True
+	AUTO_RESET = False
+	DTR_RESET = False
+	XMODEM_BAUD = 0
+	NO_SET_BOOTABLE = False
+	PACKAGE_NAME = []
+	FILE_NAME = []
+	ERASE_NAME = []
+	PKGSYS_NAME = []
+	PKGAPP_NAME = []
+	PKGUPD_NAME = []
+
+ROM_MSG = [b"Welcome to nash"]
+XMDM_MSG = "Waiting for XMODEM (CRC or 1K) transfer. Ctrl-X to cancel."
+
+class ConfigArgsLoader():
+	def __init__(self):
+		self.parser = argparse.ArgumentParser(formatter_class=argparse.RawTextHelpFormatter)
+		self.parser.add_argument("package_name", help="the name of the package to install", nargs='*')
+		self.parser.add_argument("-f", "--file", dest="file_name", help="save file", action='append')
+		self.parser.add_argument("-e", "--erase", dest="erase_name", help="erase file", action='append')
+
+		self.parser.add_argument("-S", "--sys", dest="pkgsys_name", help="the name of the system package to install", action='append')
+		self.parser.add_argument("-A", "--app", dest="pkgapp_name", help="the name of the application package to install", action='append')
+		self.parser.add_argument("-U", "--upd", dest="pkgupd_name", help="the name of the updater package to install", action='append')
+
+		self.parser.add_argument("-a", "--auto-reset", dest="auto_reset",
+									action="store_true", default=None,
+									help="try to auto reset develop board if possible")
+		self.parser.add_argument("-d", "--dtr-reset", dest="dtr_reset",
+									action="store_true", default=None,
+									help="try to auto reset develop board if possible")
+		self.parser.add_argument("-n", "--no-set-bootable", dest="no_set_bootable",
+									action="store_true", default=None,
+									help="not to set bootable")
+
+		group = self.parser.add_argument_group()
+		group.add_argument("-i", "--server-ip", dest="server_ip",
+						   help="the ip address connected to the telnet server")
+		group.add_argument("-p", "--server-port", dest="server_port", type=int,
+						   help="the port connected to the telnet server")
+
+		group = self.parser.add_argument_group()
+		group.add_argument("-c", "--serial-port", dest="serial_port", help="the serial port")
+		group.add_argument("-b", "--xmodem-baudrate", dest="xmodem_baud", help="Use the faster baudrate in xmodem")
+
+		mutually_group = self.parser.add_mutually_exclusive_group()
+		mutually_group.add_argument("-t", "--telnet-protocol", dest="telnet_protocol",
+									action="store_true", default=None,
+									help="use the telnet protocol for binary transmission")
+		mutually_group.add_argument("-s", "--serial-protocol", dest="serial_protocol",
+									action="store_true", default=None,
+									help="use the serial port for binary transmission, default options")
+
+		mutually_group2 = self.parser.add_mutually_exclusive_group()
+		mutually_group2.add_argument("-F", "--force-wait-reset", dest="wait_reset",
+									action="store_true", default=None,
+									help="force wait for pressing RESET button")
+		mutually_group2.add_argument("-N", "--no-wait-reset", dest="wait_reset",
+									action="store_false", default=None,
+									help="if possible, skip to wait for pressing RESET button")
+
+	def update_config(self):
+		args = self.parser.parse_args()
+
+		ConfigArgs.PACKAGE_NAME = args.package_name
+		ConfigArgs.FILE_NAME = args.file_name
+		ConfigArgs.ERASE_NAME = args.erase_name
+		ConfigArgs.PKGSYS_NAME = args.pkgsys_name
+		ConfigArgs.PKGAPP_NAME = args.pkgapp_name
+		ConfigArgs.PKGUPD_NAME = args.pkgupd_name
+
+		# Get serial port or telnet server ip etc
+		if args.serial_protocol == True:
+			ConfigArgs.PROTOCOL_TYPE = PROTOCOL_SERIAL
+		elif args.telnet_protocol == True:
+			ConfigArgs.PROTOCOL_TYPE = PROTOCOL_TELNET
+
+		if ConfigArgs.PROTOCOL_TYPE == None:
+			proto = os.environ.get("CXD56_PROTOCOL")
+			if proto is not None:
+				if 's' in proto:
+					ConfigArgs.PROTOCOL_TYPE = PROTOCOL_SERIAL
+				elif 't' in proto:
+					ConfigArgs.PROTOCOL_TYPE = PROTOCOL_TELNET
+
+		if ConfigArgs.PROTOCOL_TYPE == None:
+			ConfigArgs.PROTOCOL_TYPE = PROTOCOL_SERIAL
+
+		if ConfigArgs.PROTOCOL_TYPE == PROTOCOL_SERIAL:
+			if args.serial_port is not None:
+				ConfigArgs.SERIAL_PORT = args.serial_port
+			else:
+				# Get serial port from the environment
+				port = os.environ.get("CXD56_PORT")
+				if port is not None:
+					ConfigArgs.SERIAL_PORT = port
+				else:
+					print("CXD56_PORT is not set, Use " + ConfigArgs.SERIAL_PORT + ".")
+		else:
+			ConfigArgs.PROTOCOL_TYPE = PROTOCOL_TELNET
+			if args.server_port is not None:
+				ConfigArgs.SERVER_PORT = args.server_port
+			else:
+				port = os.environ.get("CXD56_TELNETSRV_PORT")
+				if port is not None:
+					ConfigArgs.SERVER_PORT = port
+				else:
+					print("CXD56_TELNETSRV_PORT is not set, Use " + str(ConfigArgs.SERVER_PORT) + ".")
+			if args.server_ip is not None:
+				ConfigArgs.SERVER_IP = args.server_ip
+			else:
+				ip = os.environ.get("CXD56_TELNETSRV_IP")
+				if ip is not None:
+					ConfigArgs.SERVER_IP = ip
+				else:
+					print("CXD56_TELNETSRV_IP is not set, Use " + ConfigArgs.SERVER_IP + ".")
+
+		if args.xmodem_baud is not None:
+			ConfigArgs.XMODEM_BAUD = args.xmodem_baud
+
+		if args.auto_reset is not None:
+			ConfigArgs.AUTO_RESET = args.auto_reset
+
+		if args.dtr_reset is not None:
+			ConfigArgs.DTR_RESET = args.dtr_reset
+
+		if args.no_set_bootable is not None:
+			ConfigArgs.NO_SET_BOOTABLE = args.no_set_bootable
+
+		if args.wait_reset is not None:
+			ConfigArgs.WAIT_RESET = args.wait_reset
+
+class TelnetDev:
+	def __init__(self):
+		srv_ipaddr = ConfigArgs.SERVER_IP
+		srv_port = ConfigArgs.SERVER_PORT
+		self.recvbuf = b'';
+		try:
+			self.telnet = telnetlib.Telnet(host=srv_ipaddr, port=srv_port, timeout=10)
+			# There is a ack to be sent after connecting to the telnet server.
+			self.telnet.write(b"\xff")
+		except Exception as e:
+			print("Cannot connect to the server %s:%d" % (srv_ipaddr, srv_port))
+			sys.exit(e.args[0])
+
+	def readline(self, size=None):
+		res = b''
+		ch = b''
+		while ch != ConfigArgs.EOL:
+			ch = self.getc_raw(1, timeout=0.1)
+			if ch == b'':
+				return res
+			res += ch
+		return res
+
+	def getc_raw(self, size, timeout=1):
+		res = b''
+		tm = time.monotonic()
+		while size > 0:
+			while self.recvbuf == b'':
+				self.recvbuf = self.telnet.read_eager()
+				if self.recvbuf == b'':
+					if (time.monotonic() - tm) > timeout:
+						return res
+					time.sleep(0.1)
+			res += self.recvbuf[0:1]
+			self.recvbuf = self.recvbuf[1:]
+			size -= 1
+		return res
+
+	def write(self, buffer):
+		self.telnet.write(buffer)
+
+	def discard_inputs(self, timeout=1.0):
+		while True:
+			ch = self.getc_raw(1, timeout=timeout)
+			if ch == b'':
+				break
+
+	def getc(self, size, timeout=1):
+		c = self.getc_raw(size, timeout)
+		return c
+
+	def putc(self, buffer, timeout=1):
+		self.telnet.write(buffer)
+		self.show_progress(len(buffer))
+
+	def reboot(self):
+		# no-op
+		pass
+
+	def set_file_size(self, filesize):
+		self.bytes_transfered = 0
+		self.filesize = filesize
+		self.count = 0
+
+	def show_progress(self, sendsize):
+		if PRINT_RAW_COMMAND:
+			if self.count < MAX_DOT_COUNT:
+				self.bytes_transfered = self.bytes_transfered + sendsize
+				cur_count = int(self.bytes_transfered * MAX_DOT_COUNT / self.filesize)
+				if MAX_DOT_COUNT < cur_count:
+					cur_count = MAX_DOT_COUNT
+				for idx in range(cur_count - self.count):
+					print('#',end='')
+					sys.stdout.flush()
+				self.count = cur_count
+				if self.count == MAX_DOT_COUNT:
+					print("\n")
+
+class SerialDev:
+	def __init__(self):
+		if import_serial_module is False:
+			print("Cannot import serial module, maybe it's not install yet.")
+			print("\n", end="")
+			print("Please install python-setuptool by Cygwin installer.")
+			print("After that use easy_intall command to install serial module")
+			print("    $ cd tool/")
+			print("    $ python3 -m easy_install pyserial-2.7.tar.gz")
+			quit()
+		else:
+			port = ConfigArgs.SERIAL_PORT
+			try:
+				self.serial = serial.Serial(port, baudrate=115200,
+					parity=serial.PARITY_NONE, stopbits=serial.STOPBITS_ONE,
+					bytesize=serial.EIGHTBITS, timeout=0.1)
+			except Exception as e:
+				print("Cannot open port : " + port)
+				sys.exit(e.args[0])
+
+	def readline(self, size=None):
+		return self.serial.readline(size)
+
+	def write(self, buffer):
+		self.serial.write(buffer)
+		self.serial.flush()
+
+	def discard_inputs(self, timeout=1.0):
+		time.sleep(timeout)
+		self.serial.flushInput()
+
+	def getc(self, size, timeout=1):
+		self.serial.timeout = timeout
+		c = self.serial.read(size)
+		self.serial.timeout = 0.1
+		return c
+
+	def putc(self, buffer, timeout=1):
+		self.serial.timeout = timeout
+		self.serial.write(buffer)
+		self.serial.flush()
+		self.serial.timeout = 0.1
+		self.show_progress(len(buffer))
+
+	# Note: windows platform dependent code
+	def putc_win(self, buffer, timeout=1):
+		self.serial.write(buffer)
+		self.show_progress(len(buffer))
+		while True:
+			if self.serial.out_waiting == 0:
+				break
+
+	def setBaudrate(self, baudrate):
+#		self.serial.setBaudrate(baudrate)
+		self.serial.baudrate = baudrate
+
+	def reboot(self):
+		# Target Reset by DTR
+		self.serial.setDTR(False)
+		self.serial.setDTR(True)
+		self.serial.setDTR(False)
+
+	def set_file_size(self, filesize):
+		self.bytes_transfered = 0
+		self.filesize = filesize
+		self.count = 0
+
+	def show_progress(self, sendsize):
+		if PRINT_RAW_COMMAND:
+			if self.count < MAX_DOT_COUNT:
+				self.bytes_transfered = self.bytes_transfered + sendsize
+				cur_count = int(self.bytes_transfered * MAX_DOT_COUNT / self.filesize)
+				if MAX_DOT_COUNT < cur_count:
+					cur_count = MAX_DOT_COUNT
+				for idx in range(cur_count - self.count):
+					print('#',end='')
+					sys.stdout.flush()
+				self.count = cur_count
+				if self.count == MAX_DOT_COUNT:
+					print("\n")
+
+class FlashWriter:
+	def __init__(self, protocol_sel=PROTOCOL_SERIAL):
+		if protocol_sel == PROTOCOL_TELNET:
+			self.serial = TelnetDev()
+		else:
+			self.serial = SerialDev()
+
+	def cancel_autoboot(self) :
+		boot_msg = ''
+		self.serial.reboot()  # Target reboot before send 'r'
+		while boot_msg == '' :
+			rx = self.serial.readline().strip()
+			self.serial.write(b"r")  # Send "r" key to avoid auto boot
+			for msg in ROM_MSG :
+				if msg in rx :
+					boot_msg = msg
+					break
+		while True :
+			rx = self.serial.readline().decode(errors="replace").strip()
+			if "updater" in rx :
+				# Workaround : Sometime first character is dropped.
+				# Send line feed as air shot before actual command.
+				self.serial.write(b"\n")    # Send line feed
+				self.serial.discard_inputs()# Clear input buffer to sync
+				return boot_msg.decode(errors="ignore")
+
+	def recv(self):
+		rx = self.serial.readline()
+		if PRINT_RAW_COMMAND :
+			serial_line = rx.decode(errors="replace")
+			if serial_line.strip() != "" and not serial_line.startswith(XMDM_MSG):
+				print(serial_line, end="")
+		return rx
+
+	def wait(self, string):
+		while True:
+			rx = self.recv()
+			if string.encode() in rx:
+				time.sleep(0.1)
+				break
+
+	def wait_for_prompt(self):
+		prompt_pat = re.compile(b"updater")
+		while True:
+			rx = self.recv()
+			if prompt_pat.search(rx):
+				time.sleep(0.1)
+				break
+
+	def send(self, string):
+		self.serial.write(str(string).encode() + b"\n")
+		rx = self.serial.readline()
+		if PRINT_RAW_COMMAND :
+			print(rx.decode(errors="replace"), end="")
+
+	def read_output(self, prompt_text) :
+		output = []
+		while True :
+			rx = self.serial.readline()
+			if prompt_text.encode() in rx :
+				time.sleep(0.1)
+				break
+			if rx != "" :
+				output.append(rx.decode(errors="ignore").rstrip())
+		return output
+
+	def install_files(self, files, command) :
+		if ConfigArgs.XMODEM_BAUD:
+			command += " -b " + ConfigArgs.XMODEM_BAUD
+		if os.name == 'nt':
+			modem = xmodem.XMODEM(self.serial.getc, self.serial.putc_win, 'xmodem1k')
+		else:
+			modem = xmodem.XMODEM(self.serial.getc, self.serial.putc, 'xmodem1k')
+		for file in files:
+			with open(file, "rb") as bin :
+				self.send(command)
+				print("Install " + file)
+				self.wait(XMDM_MSG)
+				print("|0%" +
+						"-" * (int(MAX_DOT_COUNT / 2) - 6) +
+						"50%" +
+						"-" * (MAX_DOT_COUNT - int(MAX_DOT_COUNT / 2) - 5) +
+						"100%|")
+				if ConfigArgs.XMODEM_BAUD:
+					self.serial.setBaudrate(ConfigArgs.XMODEM_BAUD)
+					self.serial.discard_inputs() # Clear input buffer to sync
+				self.serial.set_file_size(os.path.getsize(file))
+				modem.send(bin)
+				if ConfigArgs.XMODEM_BAUD:
+					self.serial.setBaudrate(115200)
+			self.wait_for_prompt()
+
+	def save_files(self, files) :
+		if ConfigArgs.XMODEM_BAUD:
+			command = "save_file -b " + ConfigArgs.XMODEM_BAUD + " -x "
+		else:
+			command = "save_file -x "
+		if os.name == 'nt':
+			modem = xmodem.XMODEM(self.serial.getc, self.serial.putc_win, 'xmodem1k')
+		else:
+			modem = xmodem.XMODEM(self.serial.getc, self.serial.putc, 'xmodem1k')
+		for file in files:
+			with open(file, "rb") as bin :
+				self.send(command + os.path.basename(file))
+				print("Save " + file)
+				self.wait(XMDM_MSG)
+				if ConfigArgs.XMODEM_BAUD:
+					self.serial.setBaudrate(ConfigArgs.XMODEM_BAUD)
+					self.serial.discard_inputs() # Clear input buffer to sync
+				self.serial.set_file_size(os.path.getsize(file))
+				modem.send(bin)
+				if ConfigArgs.XMODEM_BAUD:
+					self.serial.setBaudrate(115200)
+				self.wait_for_prompt()
+				self.send("chmod d+rw " + os.path.basename(file))
+				self.wait_for_prompt()
+
+	def delete_files(self, files) :
+		for file in files :
+			self.delete_binary(file)
+
+	def delete_binary(self, bin_name) :
+		self.send("rm " + bin_name)
+		self.wait_for_prompt()
+
+def main():
+	try:
+		config_loader = ConfigArgsLoader()
+		config_loader.update_config()
+	except:
+		return errno.EINVAL
+
+	# Wait to reset the board
+	writer = FlashWriter(ConfigArgs.PROTOCOL_TYPE)
+
+	do_wait_reset = True
+	if ConfigArgs.AUTO_RESET:
+		if subprocess.call("cd " + sys.path[0] + "; ./reset_board.sh", shell=True) == 0:
+			print("auto reset board sucess!!")
+			do_wait_reset = False
+			bootrom_msg = writer.cancel_autoboot()
+
+	if ConfigArgs.DTR_RESET:
+		do_wait_reset = False
+		bootrom_msg = writer.cancel_autoboot()
+
+	if ConfigArgs.WAIT_RESET == False and do_wait_reset == True:
+		rx = writer.recv()
+		time.sleep(1)
+		for i in range(3):
+			writer.send("")
+			rx = writer.recv()
+			if "updater".encode() in rx:
+				# No need to wait for reset
+				do_wait_reset = False
+				break
+			time.sleep(1)
+
+	if do_wait_reset:
+		# Wait to reset the board
+		print('Please press RESET button on target board')
+		sys.stdout.flush()
+		bootrom_msg = writer.cancel_autoboot()
+
+	# Remove files
+	if ConfigArgs.ERASE_NAME :
+		print(">>> Remove exisiting files ...")
+		writer.delete_files(ConfigArgs.ERASE_NAME)
+
+	# Install files
+	if ConfigArgs.PACKAGE_NAME or ConfigArgs.PKGSYS_NAME or ConfigArgs.PKGAPP_NAME or ConfigArgs.PKGUPD_NAME:
+		print(">>> Install files ...")
+	if ConfigArgs.PACKAGE_NAME :
+		writer.install_files(ConfigArgs.PACKAGE_NAME, "install")
+	if ConfigArgs.PKGSYS_NAME :
+		writer.install_files(ConfigArgs.PKGSYS_NAME, "install")
+	if ConfigArgs.PKGAPP_NAME :
+		writer.install_files(ConfigArgs.PKGAPP_NAME, "install")
+	if ConfigArgs.PKGUPD_NAME :
+		writer.install_files(ConfigArgs.PKGUPD_NAME, "install -k updater.key")
+
+	# Save files
+	if ConfigArgs.FILE_NAME :
+		print(">>> Save files ...")
+		writer.save_files(ConfigArgs.FILE_NAME)
+
+	# Set auto boot
+	if not ConfigArgs.NO_SET_BOOTABLE:
+		print(">>> Save Configuration to FlashROM ...")
+		writer.send("set bootable M0P")
+		writer.wait_for_prompt()
+
+	# Sync all cached data to flash
+	writer.send("sync")
+	writer.wait_for_prompt()
+
+	if REBOOT_AT_END :
+		print("Restarting the board ...")
+		writer.send("reboot")
+
+	return 0
+
+if __name__ == "__main__":
+	try:
+		sys.exit(main())
+	except KeyboardInterrupt:
+		print("Canceled by keyboard interrupt.")
+		pass
diff --git a/ports/cxd56/tools/xmodem.py b/ports/cxd56/tools/xmodem.py
new file mode 100644
index 0000000000..c934300560
--- /dev/null
+++ b/ports/cxd56/tools/xmodem.py
@@ -0,0 +1,590 @@
+'''
+===============================
+ XMODEM file transfer protocol
+===============================
+
+.. $Id$
+
+This is a literal implementation of XMODEM.TXT_, XMODEM1K.TXT_ and
+XMODMCRC.TXT_, support for YMODEM and ZMODEM is pending. YMODEM should
+be fairly easy to implement as it is a hack on top of the XMODEM
+protocol using sequence bytes ``0x00`` for sending file names (and some
+meta data).
+
+.. _XMODEM.TXT: doc/XMODEM.TXT
+.. _XMODEM1K.TXT: doc/XMODEM1K.TXT
+.. _XMODMCRC.TXT: doc/XMODMCRC.TXT
+
+Data flow example including error recovery
+==========================================
+
+Here is a sample of the data flow, sending a 3-block message.
+It includes the two most common line hits - a garbaged block,
+and an ``ACK`` reply getting garbaged. ``CRC`` or ``CSUM`` represents
+the checksum bytes.
+
+XMODEM 128 byte blocks
+----------------------
+
+::
+
+    SENDER                                      RECEIVER
+
+                                            <-- NAK
+    SOH 01 FE Data[128] CSUM                -->
+                                            <-- ACK
+    SOH 02 FD Data[128] CSUM                -->
+                                            <-- ACK
+    SOH 03 FC Data[128] CSUM                -->
+                                            <-- ACK
+    SOH 04 FB Data[128] CSUM                -->
+                                            <-- ACK
+    SOH 05 FA Data[100] CPMEOF[28] CSUM     -->
+                                            <-- ACK
+    EOT                                     -->
+                                            <-- ACK
+
+XMODEM-1k blocks, CRC mode
+--------------------------
+
+::
+
+    SENDER                                      RECEIVER
+
+                                            <-- C
+    STX 01 FE Data[1024] CRC CRC            -->
+                                            <-- ACK
+    STX 02 FD Data[1024] CRC CRC            -->
+                                            <-- ACK
+    STX 03 FC Data[1000] CPMEOF[24] CRC CRC -->
+                                            <-- ACK
+    EOT                                     -->
+                                            <-- ACK
+
+Mixed 1024 and 128 byte Blocks
+------------------------------
+
+::
+
+    SENDER                                      RECEIVER
+
+                                            <-- C
+    STX 01 FE Data[1024] CRC CRC            -->
+                                            <-- ACK
+    STX 02 FD Data[1024] CRC CRC            -->
+                                            <-- ACK
+    SOH 03 FC Data[128] CRC CRC             -->
+                                            <-- ACK
+    SOH 04 FB Data[100] CPMEOF[28] CRC CRC  -->
+                                            <-- ACK
+    EOT                                     -->
+                                            <-- ACK
+
+YMODEM Batch Transmission Session (1 file)
+------------------------------------------
+
+::
+
+    SENDER                                      RECEIVER
+                                            <-- C (command:rb)
+    SOH 00 FF foo.c NUL[123] CRC CRC        -->
+                                            <-- ACK
+                                            <-- C
+    SOH 01 FE Data[128] CRC CRC             -->
+                                            <-- ACK
+    SOH 02 FC Data[128] CRC CRC             -->
+                                            <-- ACK
+    SOH 03 FB Data[100] CPMEOF[28] CRC CRC  -->
+                                            <-- ACK
+    EOT                                     -->
+                                            <-- NAK
+    EOT                                     -->
+                                            <-- ACK
+                                            <-- C
+    SOH 00 FF NUL[128] CRC CRC              -->
+                                            <-- ACK
+
+
+'''
+
+__author__ = 'Wijnand Modderman <maze@pyth0n.org>'
+__copyright__ = ['Copyright (c) 2010 Wijnand Modderman',
+                 'Copyright (c) 1981 Chuck Forsberg']
+__license__ = 'MIT'
+__version__ = '0.3.2'
+
+import logging
+import time
+import sys
+from functools import partial
+import collections
+
+# Loggerr
+log = logging.getLogger('xmodem')
+
+# Protocol bytes
+SOH = bytes([0x01])
+STX = bytes([0x02])
+EOT = bytes([0x04])
+ACK = bytes([0x06])
+DLE = bytes([0x10])
+NAK = bytes([0x15])
+CAN = bytes([0x18])
+CRC = bytes([0x43]) # C
+
+
+class XMODEM(object):
+    '''
+    XMODEM Protocol handler, expects an object to read from and an object to
+    write to.
+
+    >>> def getc(size, timeout=1):
+    ...     return data or None
+    ...
+    >>> def putc(data, timeout=1):
+    ...     return size or None
+    ...
+    >>> modem = XMODEM(getc, putc)
+
+
+    :param getc: Function to retreive bytes from a stream
+    :type getc: callable
+    :param putc: Function to transmit bytes to a stream
+    :type putc: callable
+    :param mode: XMODEM protocol mode
+    :type mode: string
+    :param pad: Padding character to make the packets match the packet size
+    :type pad: char
+
+    '''
+
+    # crctab calculated by Mark G. Mendel, Network Systems Corporation
+    crctable = [
+        0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7,
+        0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef,
+        0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,
+        0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de,
+        0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485,
+        0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,
+        0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4,
+        0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc,
+        0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823,
+        0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b,
+        0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12,
+        0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,
+        0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41,
+        0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49,
+        0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70,
+        0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78,
+        0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f,
+        0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,
+        0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e,
+        0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256,
+        0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
+        0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
+        0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c,
+        0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,
+        0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab,
+        0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3,
+        0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,
+        0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92,
+        0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9,
+        0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1,
+        0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8,
+        0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0,
+    ]
+
+    def __init__(self, getc, putc, mode='xmodem', pad=b'\x1a'):
+        self.getc = getc
+        self.putc = putc
+        self.mode = mode
+        self.pad = pad
+
+    def abort(self, count=2, timeout=60):
+        '''
+        Send an abort sequence using CAN bytes.
+        '''
+        for counter in range(0, count):
+            self.putc(CAN, timeout)
+
+    def send(self, stream, retry=32, timeout=360, quiet=0, callback=None):
+        '''
+        Send a stream via the XMODEM protocol.
+
+            >>> stream = file('/etc/issue', 'rb')
+            >>> print modem.send(stream)
+            True
+
+        Returns ``True`` upon succesful transmission or ``False`` in case of
+        failure.
+
+        :param stream: The stream object to send data from.
+        :type stream: stream (file, etc.)
+        :param retry: The maximum number of times to try to resend a failed
+                      packet before failing.
+        :type retry: int
+        :param timeout: The number of seconds to wait for a response before
+                        timing out.
+        :type timeout: int
+        :param quiet: If 0, it prints info to stderr.  If 1, it does not print any info.
+        :type quiet: int
+        :param callback: Reference to a callback function that has the
+                         following signature.  This is useful for
+                         getting status updates while a xmodem
+                         transfer is underway.
+                         Expected callback signature:
+                         def callback(total_packets, success_count, error_count)
+        :type callback: callable
+        '''
+
+        # initialize protocol
+        try:
+            packet_size = dict(
+                xmodem    = 128,
+                xmodem1k  = 1024,
+            )[self.mode]
+        except AttributeError:
+            raise ValueError("An invalid mode was supplied")
+
+        error_count = 0
+        crc_mode = 0
+        cancel = 0
+        while True:
+            char = self.getc(1)
+            if char:
+                if char == NAK:
+                    crc_mode = 0
+                    break
+                elif char == CRC:
+                    crc_mode = 1
+                    break
+                elif char == CAN:
+                    if not quiet:
+                        print('received CAN', file=sys.stderr)
+                    if cancel:
+                        return False
+                    else:
+                        cancel = 1
+                else:
+                    log.error('send ERROR expected NAK/CRC, got %s' % \
+                        (ord(char),))
+
+            error_count += 1
+            if error_count >= retry:
+                self.abort(timeout=timeout)
+                return False
+
+        # send data
+        error_count = 0
+        success_count = 0
+        total_packets = 0
+        sequence = 1
+        while True:
+            data = stream.read(packet_size)
+            if not data:
+                log.info('sending EOT')
+                # end of stream
+                break
+            total_packets += 1
+            data = data.ljust(packet_size, self.pad)
+            if crc_mode:
+                crc = self.calc_crc(data)
+            else:
+                crc = self.calc_checksum(data)
+
+            # emit packet
+            while True:
+                if packet_size == 128:
+                    self.putc(SOH)
+                else:  # packet_size == 1024
+                    self.putc(STX)
+                self.putc(bytes([sequence]))
+                self.putc(bytes([0xff - sequence]))
+                self.putc(data)
+                if crc_mode:
+                    self.putc(bytes([crc >> 8]))
+                    self.putc(bytes([crc & 0xff]))
+                else:
+                    self.putc(bytes([crc]))
+
+                char = self.getc(1, timeout)
+                if char == ACK:
+                    success_count += 1
+                    if isinstance(callback, collections.Callable):
+                        callback(total_packets, success_count, error_count)
+                    break
+                if char == NAK:
+                    error_count += 1
+                    if isinstance(callback, collections.Callable):
+                        callback(total_packets, success_count, error_count)
+                    if error_count >= retry:
+                        # excessive amounts of retransmissions requested,
+                        # abort transfer
+                        self.abort(timeout=timeout)
+                        log.warning('excessive NAKs, transfer aborted')
+                        return False
+
+                    # return to loop and resend
+                    continue
+                else:
+                    log.error('Not ACK, Not NAK')
+                    error_count += 1
+                    if isinstance(callback, collections.Callable):
+                        callback(total_packets, success_count, error_count)
+                    if error_count >= retry:
+                        # excessive amounts of retransmissions requested,
+                        # abort transfer
+                        self.abort(timeout=timeout)
+                        log.warning('excessive protocol errors, transfer aborted')
+                        return False
+
+                    # return to loop and resend
+                    continue
+
+                # protocol error
+                self.abort(timeout=timeout)
+                log.error('protocol error')
+                return False
+
+            # keep track of sequence
+            sequence = (sequence + 1) % 0x100
+
+        while True:
+            # end of transmission
+            self.putc(EOT)
+
+            #An ACK should be returned
+            char = self.getc(1, timeout)
+            if char == ACK:
+                break
+            else:
+                error_count += 1
+                if error_count >= retry:
+                    self.abort(timeout=timeout)
+                    log.warning('EOT was not ACKd, transfer aborted')
+                    return False
+
+        return True
+
+    def recv(self, stream, crc_mode=1, retry=16, timeout=60, delay=1, quiet=0):
+        '''
+        Receive a stream via the XMODEM protocol.
+
+            >>> stream = file('/etc/issue', 'wb')
+            >>> print modem.recv(stream)
+            2342
+
+        Returns the number of bytes received on success or ``None`` in case of
+        failure.
+        '''
+
+        # initiate protocol
+        error_count = 0
+        char = 0
+        cancel = 0
+        while True:
+            # first try CRC mode, if this fails,
+            # fall back to checksum mode
+            if error_count >= retry:
+                self.abort(timeout=timeout)
+                return None
+            elif crc_mode and error_count < (retry / 2):
+                if not self.putc(CRC):
+                    time.sleep(delay)
+                    error_count += 1
+            else:
+                crc_mode = 0
+                if not self.putc(NAK):
+                    time.sleep(delay)
+                    error_count += 1
+
+            char = self.getc(1, timeout)
+            if not char:
+                error_count += 1
+                continue
+            elif char == SOH:
+                #crc_mode = 0
+                break
+            elif char == STX:
+                break
+            elif char == CAN:
+                if cancel:
+                    return None
+                else:
+                    cancel = 1
+            else:
+                error_count += 1
+
+        # read data
+        error_count = 0
+        income_size = 0
+        packet_size = 128
+        sequence = 1
+        cancel = 0
+        while True:
+            while True:
+                if char == SOH:
+                    packet_size = 128
+                    break
+                elif char == STX:
+                    packet_size = 1024
+                    break
+                elif char == EOT:
+                    # We received an EOT, so send an ACK and return the received
+                    # data length
+                    self.putc(ACK)
+                    return income_size
+                elif char == CAN:
+                    # cancel at two consecutive cancels
+                    if cancel:
+                        return None
+                    else:
+                        cancel = 1
+                else:
+                    if not quiet:
+                        print('recv ERROR expected SOH/EOT, got', ord(char), file=sys.stderr)
+                    error_count += 1
+                    if error_count >= retry:
+                        self.abort()
+                        return None
+            # read sequence
+            error_count = 0
+            cancel = 0
+            seq1 = ord(self.getc(1))
+            seq2 = 0xff - ord(self.getc(1))
+            if seq1 == sequence and seq2 == sequence:
+                # sequence is ok, read packet
+                # packet_size + checksum
+                data = self.getc(packet_size + 1 + crc_mode, timeout)
+                if crc_mode:
+                    csum = (ord(data[-2]) << 8) + ord(data[-1])
+                    data = data[:-2]
+                    log.debug('CRC (%04x <> %04x)' % \
+                        (csum, self.calc_crc(data)))
+                    valid = csum == self.calc_crc(data)
+                else:
+                    csum = data[-1]
+                    data = data[:-1]
+                    log.debug('checksum (checksum(%02x <> %02x)' % \
+                        (ord(csum), self.calc_checksum(data)))
+                    valid = ord(csum) == self.calc_checksum(data)
+
+                # valid data, append chunk
+                if valid:
+                    income_size += len(data)
+                    stream.write(data)
+                    self.putc(ACK)
+                    sequence = (sequence + 1) % 0x100
+                    char = self.getc(1, timeout)
+                    continue
+            else:
+                # consume data
+                self.getc(packet_size + 1 + crc_mode)
+                self.debug('expecting sequence %d, got %d/%d' % \
+                    (sequence, seq1, seq2))
+
+            # something went wrong, request retransmission
+            self.putc(NAK)
+
+    def calc_checksum(self, data, checksum=0):
+        '''
+        Calculate the checksum for a given block of data, can also be used to
+        update a checksum.
+
+            >>> csum = modem.calc_checksum('hello')
+            >>> csum = modem.calc_checksum('world', csum)
+            >>> hex(csum)
+            '0x3c'
+
+        '''
+        return (sum(map(ord, data)) + checksum) % 256
+
+    def calc_crc(self, data, crc=0):
+        '''
+        Calculate the Cyclic Redundancy Check for a given block of data, can
+        also be used to update a CRC.
+
+            >>> crc = modem.calc_crc('hello')
+            >>> crc = modem.calc_crc('world', crc)
+            >>> hex(crc)
+            '0xd5e3'
+
+        '''
+        for char in data:
+            crc = (crc << 8) ^ self.crctable[((crc >> 8) ^ int(char)) & 0xff]
+        return crc & 0xffff
+
+
+XMODEM1k  = partial(XMODEM, mode='xmodem1k')
+
+
+def run():
+    import optparse
+    import subprocess
+
+    parser = optparse.OptionParser(usage='%prog [<options>] <send|recv> filename filename')
+    parser.add_option('-m', '--mode', default='xmodem',
+        help='XMODEM mode (xmodem, xmodem1k)')
+
+    options, args = parser.parse_args()
+    if len(args) != 3:
+        parser.error('invalid arguments')
+        return 1
+
+    elif args[0] not in ('send', 'recv'):
+        parser.error('invalid mode')
+        return 1
+
+    def _func(so, si):
+        import select
+        import subprocess
+
+        print('si', si)
+        print('so', so)
+
+        def getc(size, timeout=3):
+            w,t,f = select.select([so], [], [], timeout)
+            if w:
+                data = so.read(size)
+            else:
+                data = None
+
+            print('getc(', repr(data), ')')
+            return data
+
+        def putc(data, timeout=3):
+            w,t,f = select.select([], [si], [], timeout)
+            if t:
+                si.write(data)
+                si.flush()
+                size = len(data)
+            else:
+                size = None
+
+            print('putc(', repr(data), repr(size), ')')
+            return size
+
+        return getc, putc
+
+    def _pipe(*command):
+        pipe = subprocess.Popen(command,
+            stdout=subprocess.PIPE, stdin=subprocess.PIPE)
+        return pipe.stdout, pipe.stdin
+
+    if args[0] == 'recv':
+        import io
+        getc, putc = _func(*_pipe('sz', '--xmodem', args[2]))
+        stream = open(args[1], 'wb')
+        xmodem = XMODEM(getc, putc, mode=options.mode)
+        status = xmodem.recv(stream, retry=8)
+        stream.close()
+
+    elif args[0] == 'send':
+        getc, putc = _func(*_pipe('rz', '--xmodem', args[2]))
+        stream = open(args[1], 'rb')
+        xmodem = XMODEM(getc, putc, mode=options.mode)
+        status = xmodem.send(stream, retry=8)
+        stream.close()
+
+if __name__ == '__main__':
+    sys.exit(run())
diff --git a/ports/nrf/boards/bless_dev_board_multi_sensor/board.c b/ports/nrf/boards/bless_dev_board_multi_sensor/board.c
new file mode 100644
index 0000000000..71b9a06577
--- /dev/null
+++ b/ports/nrf/boards/bless_dev_board_multi_sensor/board.c
@@ -0,0 +1,12 @@
+#include "boards/board.h"
+
+void board_init(void) {
+}
+
+bool board_requests_safe_mode(void) {
+  return false;
+}
+
+void reset_board(void) {
+
+}
diff --git a/ports/nrf/boards/bless_dev_board_multi_sensor/mpconfigboard.h b/ports/nrf/boards/bless_dev_board_multi_sensor/mpconfigboard.h
new file mode 100644
index 0000000000..7fffd86ccd
--- /dev/null
+++ b/ports/nrf/boards/bless_dev_board_multi_sensor/mpconfigboard.h
@@ -0,0 +1,17 @@
+#include "nrfx/hal/nrf_gpio.h"
+
+#define MICROPY_HW_BOARD_NAME       "BLE-SS dev board Multi Sensor"
+#define MICROPY_HW_MCU_NAME         "nRF52840"
+#define MICROPY_HW_LED_STATUS       (&pin_P0_07)
+
+#define DEFAULT_I2C_BUS_SCL         (&pin_P0_26)
+#define DEFAULT_I2C_BUS_SDA         (&pin_P0_24)
+
+#define DEFAULT_SPI_BUS_SCK         (&pin_P0_13) /* n.c */
+#define DEFAULT_SPI_BUS_MOSI        (&pin_P0_14) /* n.c */
+#define DEFAULT_SPI_BUS_MISO        (&pin_P0_15) /* n.c */
+
+#define DEFAULT_UART_BUS_RX         (&pin_P0_02) /* TP7 */
+#define DEFAULT_UART_BUS_TX         (&pin_P0_03) /* TP6 */
+
+/* Note: Flash chip is not provided. */
diff --git a/ports/nrf/boards/bless_dev_board_multi_sensor/mpconfigboard.mk b/ports/nrf/boards/bless_dev_board_multi_sensor/mpconfigboard.mk
new file mode 100644
index 0000000000..90b0908505
--- /dev/null
+++ b/ports/nrf/boards/bless_dev_board_multi_sensor/mpconfigboard.mk
@@ -0,0 +1,8 @@
+USB_VID = 0x2786
+USB_PID = 0x9207
+USB_PRODUCT = "BLE-SS dev board Multi Sensor"
+USB_MANUFACTURER = "Switch Science, Inc."
+
+MCU_CHIP = nrf52840
+
+INTERNAL_FLASH_FILESYSTEM = 1
diff --git a/ports/nrf/boards/bless_dev_board_multi_sensor/pins.c b/ports/nrf/boards/bless_dev_board_multi_sensor/pins.c
new file mode 100644
index 0000000000..c6010a8c33
--- /dev/null
+++ b/ports/nrf/boards/bless_dev_board_multi_sensor/pins.c
@@ -0,0 +1,45 @@
+#include "shared-bindings/board/__init__.h"
+
+STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
+    { MP_ROM_QSTR(MP_QSTR_D2), MP_ROM_PTR(&pin_P0_02) },      // TP7
+    { MP_ROM_QSTR(MP_QSTR_D3), MP_ROM_PTR(&pin_P0_03) },      // TP6
+    { MP_ROM_QSTR(MP_QSTR_D4), MP_ROM_PTR(&pin_P0_04) },      // LED1
+    { MP_ROM_QSTR(MP_QSTR_D5), MP_ROM_PTR(&pin_P0_05) },      // U2-BMX055-INT1
+    { MP_ROM_QSTR(MP_QSTR_D6), MP_ROM_PTR(&pin_P0_06) },      // U2-BMX055-DRDYM
+    { MP_ROM_QSTR(MP_QSTR_D7), MP_ROM_PTR(&pin_P0_07) },      // LED2
+    { MP_ROM_QSTR(MP_QSTR_D8), MP_ROM_PTR(&pin_P0_08) },      // U4-HDC2010-DRDY/INT
+    { MP_ROM_QSTR(MP_QSTR_D9), MP_ROM_PTR(&pin_P0_09) },      // TP1
+    { MP_ROM_QSTR(MP_QSTR_D10), MP_ROM_PTR(&pin_P0_10) },     // U3-LPS22HB-INT_DRDY
+    { MP_ROM_QSTR(MP_QSTR_D12), MP_ROM_PTR(&pin_P0_12) },     // S2
+    { MP_ROM_QSTR(MP_QSTR_D23), MP_ROM_PTR(&pin_P0_23) },     // BZ1
+    { MP_ROM_QSTR(MP_QSTR_D28), MP_ROM_PTR(&pin_P0_28) },     // U2-BMX055-INT4
+    { MP_ROM_QSTR(MP_QSTR_D29), MP_ROM_PTR(&pin_P0_29) },     // U2-BMX055-INT3
+    { MP_ROM_QSTR(MP_QSTR_D30), MP_ROM_PTR(&pin_P0_30) },     // U2-BMX055-INT5
+    { MP_ROM_QSTR(MP_QSTR_D31), MP_ROM_PTR(&pin_P0_31) },     // S1
+
+    { MP_ROM_QSTR(MP_QSTR_A0), MP_ROM_PTR(&pin_P0_02) },      // A0/TP7
+    { MP_ROM_QSTR(MP_QSTR_A1), MP_ROM_PTR(&pin_P0_03) },      // A1/TP6
+
+    { MP_ROM_QSTR(MP_QSTR_SDA), MP_ROM_PTR(&pin_P0_24) },     // 24 - SDA
+    { MP_ROM_QSTR(MP_QSTR_SCL), MP_ROM_PTR(&pin_P0_26) },     // 26 - SCL
+
+    { MP_ROM_QSTR(MP_QSTR_MISO), MP_ROM_PTR(&pin_P0_13) },    // 13 - MISO (n.c)
+    { MP_ROM_QSTR(MP_QSTR_MOSI), MP_ROM_PTR(&pin_P0_14) },    // 14 - MOSI (n.c)
+    { MP_ROM_QSTR(MP_QSTR_SCK), MP_ROM_PTR(&pin_P0_15) },     // 15 - SCK (n.c)
+
+    { MP_ROM_QSTR(MP_QSTR_LED1), MP_ROM_PTR(&pin_P0_07)  },   // 4 - LED1
+    { MP_ROM_QSTR(MP_QSTR_LED2), MP_ROM_PTR(&pin_P0_04)  },   // 7 - LED2
+
+    { MP_ROM_QSTR(MP_QSTR_BUTTON1), MP_ROM_PTR(&pin_P0_31) }, // 31 - S1
+    { MP_ROM_QSTR(MP_QSTR_BUTTON2), MP_ROM_PTR(&pin_P0_12) }, // 12 - S2
+
+    { MP_ROM_QSTR(MP_QSTR_RX), MP_ROM_PTR(&pin_P0_02) },      // 2 - UART RX
+    { MP_ROM_QSTR(MP_QSTR_TX), MP_ROM_PTR(&pin_P0_03) },      // 3 - UART TX
+
+    { MP_ROM_QSTR(MP_QSTR_UART), MP_ROM_PTR(&board_uart_obj) },
+    { MP_ROM_QSTR(MP_QSTR_SPI), MP_ROM_PTR(&board_spi_obj) },
+    { MP_ROM_QSTR(MP_QSTR_QWIIC), MP_ROM_PTR(&board_i2c_obj) },
+    { MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&board_i2c_obj) },
+};
+
+MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);
diff --git a/ports/nrf/boards/raytac_mdbt50q-db-40/board.c b/ports/nrf/boards/raytac_mdbt50q-db-40/board.c
new file mode 100644
index 0000000000..4421970eef
--- /dev/null
+++ b/ports/nrf/boards/raytac_mdbt50q-db-40/board.c
@@ -0,0 +1,38 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "boards/board.h"
+
+void board_init(void) {
+}
+
+bool board_requests_safe_mode(void) {
+  return false;
+}
+
+void reset_board(void) {
+
+}
diff --git a/ports/nrf/boards/raytac_mdbt50q-db-40/bootloader/6.0.0/pca10056_bootloader_6.0.0_s140.zip b/ports/nrf/boards/raytac_mdbt50q-db-40/bootloader/6.0.0/pca10056_bootloader_6.0.0_s140.zip
new file mode 100644
index 0000000000..691f4a1ab3
Binary files /dev/null and b/ports/nrf/boards/raytac_mdbt50q-db-40/bootloader/6.0.0/pca10056_bootloader_6.0.0_s140.zip differ
diff --git a/ports/nrf/boards/raytac_mdbt50q-db-40/mpconfigboard.h b/ports/nrf/boards/raytac_mdbt50q-db-40/mpconfigboard.h
new file mode 100644
index 0000000000..93fdce3a0e
--- /dev/null
+++ b/ports/nrf/boards/raytac_mdbt50q-db-40/mpconfigboard.h
@@ -0,0 +1,30 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 Glenn Ruben Bakke
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#define MICROPY_HW_BOARD_NAME       "MDBT50Q-DB-40"
+#define MICROPY_HW_MCU_NAME         "nRF52840"
+
+#define MICROPY_HW_LED_STATUS          (&pin_P0_13)
diff --git a/ports/nrf/boards/raytac_mdbt50q-db-40/mpconfigboard.mk b/ports/nrf/boards/raytac_mdbt50q-db-40/mpconfigboard.mk
new file mode 100644
index 0000000000..f49618e776
--- /dev/null
+++ b/ports/nrf/boards/raytac_mdbt50q-db-40/mpconfigboard.mk
@@ -0,0 +1,8 @@
+USB_VID = 0x239A
+USB_PID = 0x80BC
+USB_PRODUCT = "MDBT50Q-DB-40"
+USB_MANUFACTURER = "Raytac Corporation"
+
+MCU_CHIP = nrf52840
+
+INTERNAL_FLASH_FILESYSTEM = 1
diff --git a/ports/nrf/boards/raytac_mdbt50q-db-40/pins.c b/ports/nrf/boards/raytac_mdbt50q-db-40/pins.c
new file mode 100644
index 0000000000..426498cc20
--- /dev/null
+++ b/ports/nrf/boards/raytac_mdbt50q-db-40/pins.c
@@ -0,0 +1,80 @@
+#include "shared-bindings/board/__init__.h"
+
+STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
+    { MP_ROM_QSTR(MP_QSTR_P0_02), MP_ROM_PTR(&pin_P0_02) },
+    { MP_ROM_QSTR(MP_QSTR_P0_03), MP_ROM_PTR(&pin_P0_03) },
+    { MP_ROM_QSTR(MP_QSTR_P0_04), MP_ROM_PTR(&pin_P0_04) },
+    { MP_ROM_QSTR(MP_QSTR_P0_05), MP_ROM_PTR(&pin_P0_05) },
+    { MP_ROM_QSTR(MP_QSTR_P0_06), MP_ROM_PTR(&pin_P0_06) },
+    { MP_ROM_QSTR(MP_QSTR_P0_07), MP_ROM_PTR(&pin_P0_07) },
+    { MP_ROM_QSTR(MP_QSTR_P0_08), MP_ROM_PTR(&pin_P0_08) },
+    { MP_ROM_QSTR(MP_QSTR_P0_09), MP_ROM_PTR(&pin_P0_09) },
+    { MP_ROM_QSTR(MP_QSTR_P0_10), MP_ROM_PTR(&pin_P0_10) },
+    { MP_ROM_QSTR(MP_QSTR_P0_11), MP_ROM_PTR(&pin_P0_11) },
+    { MP_ROM_QSTR(MP_QSTR_P0_12), MP_ROM_PTR(&pin_P0_12) },
+    { MP_ROM_QSTR(MP_QSTR_P0_13), MP_ROM_PTR(&pin_P0_13) },
+    { MP_ROM_QSTR(MP_QSTR_P0_14), MP_ROM_PTR(&pin_P0_14) },
+    { MP_ROM_QSTR(MP_QSTR_P0_15), MP_ROM_PTR(&pin_P0_15) },
+    { MP_ROM_QSTR(MP_QSTR_P0_16), MP_ROM_PTR(&pin_P0_16) },
+    { MP_ROM_QSTR(MP_QSTR_P0_17), MP_ROM_PTR(&pin_P0_17) },
+    { MP_ROM_QSTR(MP_QSTR_P0_18), MP_ROM_PTR(&pin_P0_18) },
+    { MP_ROM_QSTR(MP_QSTR_P0_19), MP_ROM_PTR(&pin_P0_19) },
+    { MP_ROM_QSTR(MP_QSTR_P0_20), MP_ROM_PTR(&pin_P0_20) },
+    { MP_ROM_QSTR(MP_QSTR_P0_21), MP_ROM_PTR(&pin_P0_21) },
+    { MP_ROM_QSTR(MP_QSTR_P0_22), MP_ROM_PTR(&pin_P0_22) },
+    { MP_ROM_QSTR(MP_QSTR_P0_23), MP_ROM_PTR(&pin_P0_23) },
+    { MP_ROM_QSTR(MP_QSTR_P0_24), MP_ROM_PTR(&pin_P0_24) },
+    { MP_ROM_QSTR(MP_QSTR_P0_25), MP_ROM_PTR(&pin_P0_25) },
+    { MP_ROM_QSTR(MP_QSTR_P0_26), MP_ROM_PTR(&pin_P0_26) },
+    { MP_ROM_QSTR(MP_QSTR_P0_27), MP_ROM_PTR(&pin_P0_27) },
+    { MP_ROM_QSTR(MP_QSTR_P0_28), MP_ROM_PTR(&pin_P0_28) },
+    { MP_ROM_QSTR(MP_QSTR_P0_29), MP_ROM_PTR(&pin_P0_29) },
+    { MP_ROM_QSTR(MP_QSTR_P0_30), MP_ROM_PTR(&pin_P0_30) },
+    { MP_ROM_QSTR(MP_QSTR_P0_31), MP_ROM_PTR(&pin_P0_31) },
+
+    { MP_ROM_QSTR(MP_QSTR_P1_00), MP_ROM_PTR(&pin_P1_00) },
+    { MP_ROM_QSTR(MP_QSTR_P1_01), MP_ROM_PTR(&pin_P1_01) },
+    { MP_ROM_QSTR(MP_QSTR_P1_02), MP_ROM_PTR(&pin_P1_02) },
+    { MP_ROM_QSTR(MP_QSTR_P1_03), MP_ROM_PTR(&pin_P1_03) },
+    { MP_ROM_QSTR(MP_QSTR_P1_04), MP_ROM_PTR(&pin_P1_04) },
+    { MP_ROM_QSTR(MP_QSTR_P1_05), MP_ROM_PTR(&pin_P1_05) },
+    { MP_ROM_QSTR(MP_QSTR_P1_06), MP_ROM_PTR(&pin_P1_06) },
+    { MP_ROM_QSTR(MP_QSTR_P1_07), MP_ROM_PTR(&pin_P1_07) },
+    { MP_ROM_QSTR(MP_QSTR_P1_08), MP_ROM_PTR(&pin_P1_08) },
+    { MP_ROM_QSTR(MP_QSTR_P1_09), MP_ROM_PTR(&pin_P1_09) },
+    { MP_ROM_QSTR(MP_QSTR_P1_10), MP_ROM_PTR(&pin_P1_10) },
+    { MP_ROM_QSTR(MP_QSTR_P1_11), MP_ROM_PTR(&pin_P1_11) },
+    { MP_ROM_QSTR(MP_QSTR_P1_12), MP_ROM_PTR(&pin_P1_12) },
+    { MP_ROM_QSTR(MP_QSTR_P1_13), MP_ROM_PTR(&pin_P1_13) },
+    { MP_ROM_QSTR(MP_QSTR_P1_14), MP_ROM_PTR(&pin_P1_14) },
+    { MP_ROM_QSTR(MP_QSTR_P1_15), MP_ROM_PTR(&pin_P1_15) },
+
+    { MP_ROM_QSTR(MP_QSTR_AIN_0), MP_ROM_PTR(&pin_P0_02) },
+    { MP_ROM_QSTR(MP_QSTR_AIN_1), MP_ROM_PTR(&pin_P0_03) },
+    { MP_ROM_QSTR(MP_QSTR_AIN_2), MP_ROM_PTR(&pin_P0_04) },
+    { MP_ROM_QSTR(MP_QSTR_AIN_3), MP_ROM_PTR(&pin_P0_05) },
+    { MP_ROM_QSTR(MP_QSTR_AIN_4), MP_ROM_PTR(&pin_P0_28) },
+    { MP_ROM_QSTR(MP_QSTR_AIN_5), MP_ROM_PTR(&pin_P0_29) },
+    { MP_ROM_QSTR(MP_QSTR_AIN_6), MP_ROM_PTR(&pin_P0_30) },
+    { MP_ROM_QSTR(MP_QSTR_AIN_7), MP_ROM_PTR(&pin_P0_31) },
+
+    { MP_ROM_QSTR(MP_QSTR_NFC_1), MP_ROM_PTR(&pin_P0_09) },
+    { MP_ROM_QSTR(MP_QSTR_NFC_2), MP_ROM_PTR(&pin_P0_10) },
+
+    { MP_ROM_QSTR(MP_QSTR_TX), MP_ROM_PTR(&pin_P0_06) },
+    { MP_ROM_QSTR(MP_QSTR_RX), MP_ROM_PTR(&pin_P0_08) },
+    { MP_ROM_QSTR(MP_QSTR_CTS), MP_ROM_PTR(&pin_P0_07) },
+    { MP_ROM_QSTR(MP_QSTR_RTS), MP_ROM_PTR(&pin_P0_05) },
+
+    { MP_ROM_QSTR(MP_QSTR_LED_R), MP_ROM_PTR(&pin_P0_14) },
+    { MP_ROM_QSTR(MP_QSTR_LED_G), MP_ROM_PTR(&pin_P0_13) },
+    { MP_ROM_QSTR(MP_QSTR_LED_B), MP_ROM_PTR(&pin_P0_15) },
+    { MP_ROM_QSTR(MP_QSTR_LED_4), MP_ROM_PTR(&pin_P0_16) },
+
+    { MP_ROM_QSTR(MP_QSTR_SW1), MP_ROM_PTR(&pin_P0_11) },
+    { MP_ROM_QSTR(MP_QSTR_SW2), MP_ROM_PTR(&pin_P0_12) },
+    { MP_ROM_QSTR(MP_QSTR_SW3), MP_ROM_PTR(&pin_P0_24) },
+    { MP_ROM_QSTR(MP_QSTR_SW4), MP_ROM_PTR(&pin_P0_25) },
+};
+
+MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);
diff --git a/ports/stm/common-hal/busio/SPI.c b/ports/stm/common-hal/busio/SPI.c
index c76705cd85..d4dd6cb3fc 100644
--- a/ports/stm/common-hal/busio/SPI.c
+++ b/ports/stm/common-hal/busio/SPI.c
@@ -107,105 +107,79 @@ void spi_reset(void) {
     spi_clock_disable(ALL_CLOCKS & ~(never_reset_mask));
 }
 
-void common_hal_busio_spi_construct(busio_spi_obj_t *self,
+STATIC const mcu_periph_obj_t *find_pin_function(const mcu_periph_obj_t *table, size_t sz, const mcu_pin_obj_t *pin, int periph_index) {
+    for(size_t i = 0; i<sz; i++, table++) {
+        if(periph_index == table->periph_index && pin == table->pin ) {
+            return table;
+        }
+    }
+    return NULL;
+}
+
+//match pins to SPI objects
+STATIC int check_pins(busio_spi_obj_t *self,
          const mcu_pin_obj_t * sck, const mcu_pin_obj_t * mosi,
          const mcu_pin_obj_t * miso) {
-
-    //match pins to SPI objects
-    SPI_TypeDef * SPIx;
+    bool spi_taken = false;
 
     uint8_t sck_len = MP_ARRAY_SIZE(mcu_spi_sck_list);
     uint8_t mosi_len = MP_ARRAY_SIZE(mcu_spi_mosi_list);
     uint8_t miso_len = MP_ARRAY_SIZE(mcu_spi_miso_list);
-    bool spi_taken = false;
 
     //SCK is not optional. MOSI and MISO are
-    for (uint i = 0; i < sck_len; i++) {
-        if (mcu_spi_sck_list[i].pin == sck) {
-            //if both MOSI and MISO exist, loop search normally
-            if ((mosi != NULL) && (miso != NULL)) {
-                //MOSI
-                for (uint j = 0; j < mosi_len; j++) {
-                    if (mcu_spi_mosi_list[j].pin == mosi) {
-                        //MISO
-                        for (uint k = 0; k < miso_len; k++) {
-                            if ((mcu_spi_miso_list[k].pin == miso) //everything needs the same index
-                                && (mcu_spi_sck_list[i].periph_index == mcu_spi_mosi_list[j].periph_index)
-                                && (mcu_spi_sck_list[i].periph_index == mcu_spi_miso_list[k].periph_index)) {
-                                //keep looking if the SPI is taken, edge case
-                                if (reserved_spi[mcu_spi_sck_list[i].periph_index - 1]) {
-                                    spi_taken = true;
-                                    continue;
-                                }
-                                //store pins if not
-                                self->sck = &mcu_spi_sck_list[i];
-                                self->mosi = &mcu_spi_mosi_list[j];
-                                self->miso = &mcu_spi_miso_list[k];
-                                break;
-                            }
-                        }
-                        if (self->sck != NULL) {
-                            break; // Multi-level break to pick lowest peripheral
-                        }
-                    }
-                }
-                if (self->sck != NULL) {
-                    break;
-                }
-            // if just MISO, reduce search
-            } else if (miso != NULL) {
-                for (uint j = 0; j < miso_len; j++) {
-                    if ((mcu_spi_miso_list[j].pin == miso) //only SCK and MISO need the same index
-                        && (mcu_spi_sck_list[i].periph_index == mcu_spi_miso_list[j].periph_index)) {
-                        if (reserved_spi[mcu_spi_sck_list[i].periph_index - 1]) {
-                            spi_taken = true;
-                            continue;
-                        }
-                        self->sck = &mcu_spi_sck_list[i];
-                        self->mosi = NULL;
-                        self->miso = &mcu_spi_miso_list[j];
-                        break;
-                    }
-                }
-                if (self->sck != NULL) {
-                    break;
-                }
-            // if just MOSI, reduce search
-            } else if (mosi != NULL) {
-                for (uint j = 0; j < mosi_len; j++) {
-                    if ((mcu_spi_mosi_list[j].pin == mosi) //only SCK and MOSI need the same index
-                        && (mcu_spi_sck_list[i].periph_index == mcu_spi_mosi_list[j].periph_index)) {
-                        if (reserved_spi[mcu_spi_sck_list[i].periph_index - 1]) {
-                            spi_taken = true;
-                            continue;
-                        }
-                        self->sck = &mcu_spi_sck_list[i];
-                        self->mosi = &mcu_spi_mosi_list[j];
-                        self->miso = NULL;
-                        break;
-                    }
-                }
-                if (self->sck != NULL) {
-                    break;
-                }
-            } else {
-                //throw an error immediately
-                mp_raise_ValueError(translate("Must provide MISO or MOSI pin"));
-            }
-        }
+    if (!sck) {
+        mp_raise_ValueError(translate("Must provide SCK pin"));
     }
 
-    //handle typedef selection, errors
-    if (self->sck != NULL && (self->mosi != NULL || self->miso != NULL)) {
-        SPIx = mcu_spi_banks[self->sck->periph_index - 1];
-    } else {
-        if (spi_taken) {
-            mp_raise_ValueError(translate("Hardware busy, try alternative pins"));
-        } else {
-            mp_raise_ValueError(translate("Invalid SPI pin selection"));
-        }
+    if (!miso && !mosi) {
+        mp_raise_ValueError(translate("Must provide MISO or MOSI pin"));
     }
 
+    // Loop over each possibility for SCK.  Check whether MISO and/or MOSI can be used on the same peripheral
+    for (uint i = 0; i < sck_len; i++) {
+        const mcu_periph_obj_t *mcu_spi_sck = &mcu_spi_sck_list[i];
+        if (mcu_spi_sck->pin != sck) {
+            continue;
+        }
+
+        int periph_index = mcu_spi_sck->periph_index;
+
+        const mcu_periph_obj_t *mcu_spi_miso = NULL;
+        if (miso && !(mcu_spi_miso = find_pin_function(mcu_spi_miso_list, miso_len, miso, periph_index))) {
+            continue;
+        }
+
+        const mcu_periph_obj_t *mcu_spi_mosi = NULL;
+        if (mosi && !(mcu_spi_mosi = find_pin_function(mcu_spi_mosi_list, mosi_len, mosi, periph_index))) {
+            continue;
+        }
+
+        if (reserved_spi[periph_index-1]) {
+            spi_taken = true;
+            continue;
+        }
+
+        self->sck = mcu_spi_sck;
+        self->mosi = mcu_spi_mosi;
+        self->miso = mcu_spi_miso;
+
+        return periph_index;
+    }
+
+    if (spi_taken) {
+        mp_raise_ValueError(translate("Hardware busy, try alternative pins"));
+    } else {
+        mp_raise_ValueError(translate("Invalid SPI pin selection"));
+    }
+}
+
+void common_hal_busio_spi_construct(busio_spi_obj_t *self,
+         const mcu_pin_obj_t * sck, const mcu_pin_obj_t * mosi,
+         const mcu_pin_obj_t * miso) {
+
+    int periph_index = check_pins(self, sck, mosi, miso);
+    SPI_TypeDef * SPIx = mcu_spi_banks[periph_index - 1];
+
     //Start GPIO for each pin
     GPIO_InitTypeDef GPIO_InitStruct = {0};
     GPIO_InitStruct.Pin = pin_mask(sck->number);
diff --git a/py/circuitpy_mpconfig.mk b/py/circuitpy_mpconfig.mk
index 302368f74a..84fb926b5e 100644
--- a/py/circuitpy_mpconfig.mk
+++ b/py/circuitpy_mpconfig.mk
@@ -45,9 +45,6 @@ CFLAGS += -DCIRCUITPY_AUDIOBUSIO=$(CIRCUITPY_AUDIOBUSIO)
 CIRCUITPY_AUDIOIO ?= $(CIRCUITPY_FULL_BUILD)
 CFLAGS += -DCIRCUITPY_AUDIOIO=$(CIRCUITPY_AUDIOIO)
 
-CIRCUITPY_AUDIOIO_COMPAT ?= $(CIRCUITPY_AUDIOIO)
-CFLAGS += -DCIRCUITPY_AUDIOIO_COMPAT=$(CIRCUITPY_AUDIOIO_COMPAT)
-
 CIRCUITPY_AUDIOPWMIO ?= 0
 CFLAGS += -DCIRCUITPY_AUDIOPWMIO=$(CIRCUITPY_AUDIOPWMIO)
 
diff --git a/shared-bindings/audioio/__init__.c b/shared-bindings/audioio/__init__.c
index 7ec927834f..a9c58e8645 100644
--- a/shared-bindings/audioio/__init__.c
+++ b/shared-bindings/audioio/__init__.c
@@ -33,15 +33,6 @@
 #include "shared-bindings/audioio/__init__.h"
 #include "shared-bindings/audioio/AudioOut.h"
 
-#if CIRCUITPY_AUDIOIO_COMPAT
-#include "shared-bindings/audiomixer/Mixer.h"
-#include "shared-bindings/audiocore/RawSample.h"
-#include "shared-bindings/audiocore/WaveFile.h"
-#endif
-#if CIRCUITPY_AUDIOMIXER
-#include "shared-bindings/audiomixer/Mixer.h"
-#endif
-
 //| """Support for audio output
 //|
 //| The `audioio` module contains classes to provide access to audio IO.
@@ -62,13 +53,6 @@
 STATIC const mp_rom_map_elem_t audioio_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_audioio) },
     { MP_ROM_QSTR(MP_QSTR_AudioOut), MP_ROM_PTR(&audioio_audioout_type) },
-#if CIRCUITPY_AUDIOIO_COMPAT
-    #if CIRCUITPY_AUDIOMIXER
-    { MP_ROM_QSTR(MP_QSTR_Mixer), MP_ROM_PTR(&audiomixer_mixer_type) },
-    #endif
-    { MP_ROM_QSTR(MP_QSTR_RawSample), MP_ROM_PTR(&audioio_rawsample_type) },
-    { MP_ROM_QSTR(MP_QSTR_WaveFile), MP_ROM_PTR(&audioio_wavefile_type) },
-#endif
 };
 
 STATIC MP_DEFINE_CONST_DICT(audioio_module_globals, audioio_module_globals_table);