202 lines
18 KiB
ReStructuredText
202 lines
18 KiB
ReStructuredText
SAMD21x18
|
|
=========
|
|
|
|
This port brings MicroPython to SAMD21x18 based development boards under the name
|
|
CircuitPython. Supported boards include the Adafruit CircuitPlayground Express,
|
|
Adafruit Feather M0 Express, Adafruit Metro M0 Express, Arduino Zero, Adafruit
|
|
Feather M0 Basic and Adafruit M0 Bluefruit LE.
|
|
|
|
Pinout
|
|
------
|
|
|
|
All of the boards share the same core pin functionality but call pins by
|
|
different names. The table below matches the pin order in
|
|
`the datasheet <http://ww1.microchip.com/downloads/en/DeviceDoc/40001882A.pdf>`_
|
|
and omits the pins only available on the largest package because all supported
|
|
boards use smaller version.
|
|
|
|
===================== =============== =========================== ====================== ================ ================== ========================= ================ ================
|
|
`microcontroller.pin` `board`
|
|
--------------------- -------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|
Datasheet arduino_zero circuitplayground_express feather_m0_adalogger feather_m0_basic feather_m0_express gemma_m0 metro_m0_express trinket_m0
|
|
===================== =============== =========================== ====================== ================ ================== ========================= ================ ================
|
|
PA00 ``ACCELEROMETER_SDA`` ``APA102_MOSI`` ``APA102_MOSI``
|
|
PA01 ``ACCELEROMETER_SCL`` ``APA102_SCK`` ``APA102_SCK``
|
|
PA02 ``A0`` ``A0`` / ``SPEAKER`` ``A0`` ``A0`` ``A0`` ``A0`` / ``D1`` ``A0`` ``D1`` / ``A0``
|
|
PA03
|
|
PB08 ``A1`` ``A7`` / ``TX`` ``A1`` ``A1`` ``A1`` ``A1``
|
|
PB09 ``A2`` ``A6`` / ``RX`` ``A2`` ``A2`` ``A2`` ``A2``
|
|
PA04 ``A3`` ``IR_PROXIMITY`` ``A3`` ``A3`` ``A3`` ``D0`` / ``TX`` / ``SDA`` ``A3``
|
|
PA05 ``A4`` ``A1`` ``A4`` ``A4`` ``A4`` ``D2`` / ``RX`` / ``SCL`` ``A4``
|
|
PA06 ``D8`` ``A2`` ``D8`` / ``GREEN_LED`` ``NEOPIXEL`` ``D8`` ``D4`` / ``TX``
|
|
PA07 ``D9`` ``A3`` ``D9`` ``D9`` ``D9`` ``D9`` ``D3`` / ``RX``
|
|
PA08 ``D4`` ``MICROPHONE_DO`` ``D4`` / ``SD_CS`` ``D4`` ``D0`` / ``SDA``
|
|
PA09 ``D3`` ``TEMPERATURE`` / ``A9`` ``D3`` ``D2`` / ``SCL``
|
|
PA10 ``D1`` / ``TX`` ``MICROPHONE_SCK`` ``D1`` / ``TX`` ``D1`` / ``TX`` ``D1`` / ``TX`` ``D1`` / ``TX`` ``D13``
|
|
PA11 ``D0`` / ``RX`` ``LIGHT`` / ``A8`` ``D0`` / ``RX`` ``D0`` / ``RX`` ``D0`` / ``RX`` ``D0`` / ``RX``
|
|
PB10 ``MOSI`` ``MOSI`` ``MOSI`` ``MOSI`` ``MOSI``
|
|
PB11 ``SCK`` ``SCK`` ``SCK`` ``SCK`` ``SCK``
|
|
PA12 ``MISO`` ``REMOTEIN`` / ``IR_RX`` ``MISO`` ``MISO`` ``MISO`` ``MISO``
|
|
PA13 ``ACCELEROMETER_INTERRUPT`` ``FLASH_CS``
|
|
PA14 ``D2`` ``BUTTON_B`` / ``D5`` ``D2``
|
|
PA15 ``D5`` ``SLIDE_SWITCH`` / ``D7`` ``D5`` ``D5`` ``D5`` ``D5``
|
|
PA16 ``D11`` ``MISO`` ``D11`` ``D11`` ``D11`` ``D11``
|
|
PA17 ``D13`` ``D13`` ``D13`` / ``RED_LED`` ``D13`` ``D13`` ``D13``
|
|
PA18 ``D10`` ``D10`` ``D10`` ``D10`` ``D10``
|
|
PA19 ``D12`` ``D12`` ``D12`` ``D12`` ``D12``
|
|
PA20 ``D6`` ``MOSI`` ``D6`` ``D6`` ``D6`` ``D6``
|
|
PA21 ``D7`` ``SCK`` ``D7`` / ``SD_CD`` ``D7``
|
|
PA22 ``SDA`` ``SDA`` ``SDA`` ``SDA`` ``SDA``
|
|
PA23 ``SCL`` ``REMOTEOUT`` / ``IR_TX`` ``SCL`` ``SCL`` ``SCL`` ``L`` / ``D13`` ``SCL``
|
|
PA24
|
|
PA25
|
|
PB22 ``FLASH_CS``
|
|
PB23 ``NEOPIXEL`` / ``D8``
|
|
PA27
|
|
PA28 ``BUTTON_A`` / ``D4``
|
|
PA29
|
|
PA30 ``SPEAKER_ENABLE`` ``NEOPIXEL``
|
|
PA31
|
|
PB02 ``A5`` ``A5`` / ``SDA`` ``A5`` ``A5`` ``A5`` ``A5``
|
|
PB03 ``A4`` / ``SCL``
|
|
===================== =============== =========================== ====================== ================ ================== ========================= ================ ================
|
|
|
|
Here is a table about which pins can do what in CircuitPython terms. However,
|
|
just because something is listed, doesn't mean it will always work. Existing use
|
|
of other pins and functionality will impact your ability to use a pin for your
|
|
desired purpose. For example, only certain combinations of SPI pins will work
|
|
because they use shared hardware internally.
|
|
|
|
===================== ======== ========= ========= ======= ======= ======= ========= ========= ======= ========== ========== ========= ========= ========= ============ ======= ======= =========
|
|
`microcontroller.pin` `analogio` `audioio` `bitbangio` `busio` `digitalio` `pulseio` `touchio`
|
|
--------------------- ------------------- --------- ------------------------- -------------------------------------------------------------------------------------- ------------ ---------------- ---------
|
|
Datasheet AnalogIn AnalogOut AudioOut I2C OneWire SPI I2C - SDA I2C - SCL OneWire SPI - MISO SPI - MOSI SPI - SCK UART - RX UART - TX DigitalInOut PulseIn PWMOut TouchIn
|
|
===================== ======== ========= ========= ======= ======= ======= ========= ========= ======= ========== ========== ========= ========= ========= ============ ======= ======= =========
|
|
PA00 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA01 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA02 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA03 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PB08 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PB09 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA04 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA05 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA06 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA07 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA08 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA09 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA10 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA11 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PB10 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PB11 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA12 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA13 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA14 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA15 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA16 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA17 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA18 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA19 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA20 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA21 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA22 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA23 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA24
|
|
PA25
|
|
PB22 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PB23 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA27 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA28 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA29 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA30 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PA31 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PB02 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
PB03 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
|
|
===================== ======== ========= ========= ======= ======= ======= ========= ========= ======= ========== ========== ========= ========= ========= ============ ======= ======= =========
|
|
|
|
Setup
|
|
-----
|
|
Install required compiler packages:
|
|
|
|
.. code-block:: shell
|
|
|
|
sudo add-apt-repository ppa:team-gcc-arm-embedded/ppa
|
|
sudo apt-get install gcc-arm-embedded
|
|
|
|
Building
|
|
--------
|
|
|
|
To build for the Arduino Zero:
|
|
|
|
.. code-block:: shell
|
|
|
|
make
|
|
|
|
To build for other boards you must change it by setting ``BOARD``. For example:
|
|
|
|
.. code-block:: shell
|
|
|
|
make BOARD=feather_m0_basic
|
|
|
|
Board names are the directory names in the `boards <https://github.com/adafruit/circuitpython/tree/master/atmel-samd/boards>`_ folder.
|
|
|
|
Deploying
|
|
---------
|
|
|
|
Arduino Bootloader
|
|
^^^^^^^^^^^^^^^^^^
|
|
|
|
If your board has an existing Arduino bootloader on it then you can use bossac
|
|
to flash MicroPython. First, activate the bootloader. On Adafruit Feathers you
|
|
can double click the reset button and the #13 will fade in and out. Finally,
|
|
run bossac:
|
|
|
|
tools/bossac_osx -e -w -v -b -R build-feather_m0_basic/firmware.bin
|
|
|
|
No Bootloader via GDB
|
|
^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
This method works for loading MicroPython onto the Arduino Zero via the
|
|
programming port rather than the native USB port.
|
|
|
|
Note: These instructions are tested on Mac OSX and will vary for different
|
|
platforms.
|
|
|
|
openocd -f ~/Library/Arduino15/packages/arduino/hardware/samd/1.6.6/variants/arduino_zero/openocd_scripts/arduino_zero.cfg
|
|
|
|
In another terminal from ``micropython/atmel-samd``:
|
|
|
|
arm-none-eabi-gdb build-arduino_zero/firmware.elf
|
|
(gdb) tar ext :3333
|
|
...
|
|
(gdb) load
|
|
...
|
|
(gdb) monitor reset init
|
|
...
|
|
(gdb) continue
|
|
|
|
Connecting
|
|
----------
|
|
|
|
Serial
|
|
^^^^^^
|
|
|
|
All boards are currently configured to work over USB rather than UART. To
|
|
connect to it from OSX do something like this:
|
|
|
|
screen /dev/tty.usbmodem142422 115200
|
|
|
|
You may not see a prompt immediately because it doesn't know you connected. To
|
|
get one either hit enter to get `>>>` or do CTRL-B to get the full header.
|
|
|
|
Mass storage
|
|
^^^^^^^^^^^^
|
|
|
|
All boards will also show up as a mass storage device. Make sure to eject it
|
|
before resetting or disconnecting the board.
|
|
|
|
Port Specific modules
|
|
---------------------
|
|
|
|
.. toctree::
|
|
bindings/samd/__init__
|