diff --git a/locale/ID.po b/locale/ID.po
index d8758374e2..61991e6110 100644
--- a/locale/ID.po
+++ b/locale/ID.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-08-20 13:01-0400\n"
+"POT-Creation-Date: 2019-08-22 15:20-0400\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"
@@ -330,6 +330,14 @@ msgstr ""
 msgid "Buffer incorrect size. Should be %d bytes."
 msgstr ""
 
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is not a bytearray."
+msgstr ""
+
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is too small"
+msgstr ""
+
 #: ports/nrf/common-hal/audiopwmio/PWMAudioOut.c
 #, c-format
 msgid "Buffer length %d too big. It must be less than %d"
@@ -520,6 +528,10 @@ msgstr ""
 msgid "Destination capacity is smaller than destination_length."
 msgstr ""
 
+#: shared-bindings/displayio/Display.c
+msgid "Display must have a 16 bit colorspace."
+msgstr ""
+
 #: shared-bindings/displayio/Display.c
 msgid "Display rotation must be in 90 degree increments"
 msgstr ""
@@ -1321,9 +1333,6 @@ msgid "Unsupported pull value."
 msgstr ""
 
 #: ports/nrf/common-hal/bleio/Characteristic.c
-msgid "Value length  required fixed length"
-msgstr ""
-
 #: ports/nrf/common-hal/bleio/Descriptor.c
 msgid "Value length != required fixed length"
 msgstr ""
diff --git a/locale/circuitpython.pot b/locale/circuitpython.pot
index 2ccb77d5f4..50de690fe4 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: 2019-08-20 13:06-0400\n"
+"POT-Creation-Date: 2019-08-22 15:20-0400\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"
@@ -326,6 +326,14 @@ msgstr ""
 msgid "Buffer incorrect size. Should be %d bytes."
 msgstr ""
 
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is not a bytearray."
+msgstr ""
+
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is too small"
+msgstr ""
+
 #: ports/nrf/common-hal/audiopwmio/PWMAudioOut.c
 #, c-format
 msgid "Buffer length %d too big. It must be less than %d"
@@ -509,6 +517,10 @@ msgstr ""
 msgid "Destination capacity is smaller than destination_length."
 msgstr ""
 
+#: shared-bindings/displayio/Display.c
+msgid "Display must have a 16 bit colorspace."
+msgstr ""
+
 #: shared-bindings/displayio/Display.c
 msgid "Display rotation must be in 90 degree increments"
 msgstr ""
@@ -1297,9 +1309,6 @@ msgid "Unsupported pull value."
 msgstr ""
 
 #: ports/nrf/common-hal/bleio/Characteristic.c
-msgid "Value length  required fixed length"
-msgstr ""
-
 #: ports/nrf/common-hal/bleio/Descriptor.c
 msgid "Value length != required fixed length"
 msgstr ""
diff --git a/locale/de_DE.po b/locale/de_DE.po
index a90e5c46ea..c74e5b1ff5 100644
--- a/locale/de_DE.po
+++ b/locale/de_DE.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-08-20 13:01-0400\n"
+"POT-Creation-Date: 2019-08-22 15:20-0400\n"
 "PO-Revision-Date: 2018-07-27 11:55-0700\n"
 "Last-Translator: Pascal Deneaux\n"
 "Language-Team: Sebastian Plamauer, Pascal Deneaux\n"
@@ -330,6 +330,14 @@ msgstr "Die Helligkeit ist nicht einstellbar"
 msgid "Buffer incorrect size. Should be %d bytes."
 msgstr "Der Puffergröße ist inkorrekt. Sie sollte %d bytes haben."
 
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is not a bytearray."
+msgstr ""
+
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is too small"
+msgstr ""
+
 #: ports/nrf/common-hal/audiopwmio/PWMAudioOut.c
 #, c-format
 msgid "Buffer length %d too big. It must be less than %d"
@@ -513,6 +521,10 @@ msgstr ""
 msgid "Destination capacity is smaller than destination_length."
 msgstr "Die Zielkapazität ist kleiner als destination_length."
 
+#: shared-bindings/displayio/Display.c
+msgid "Display must have a 16 bit colorspace."
+msgstr ""
+
 #: shared-bindings/displayio/Display.c
 msgid "Display rotation must be in 90 degree increments"
 msgstr "Die Rotation der Anzeige muss in 90-Grad-Schritten erfolgen"
@@ -1328,9 +1340,6 @@ msgid "Unsupported pull value."
 msgstr "Nicht unterstützter Pull-Wert"
 
 #: ports/nrf/common-hal/bleio/Characteristic.c
-msgid "Value length  required fixed length"
-msgstr ""
-
 #: ports/nrf/common-hal/bleio/Descriptor.c
 msgid "Value length != required fixed length"
 msgstr ""
diff --git a/locale/en_US.po b/locale/en_US.po
index c7599388f8..ff4643875a 100644
--- a/locale/en_US.po
+++ b/locale/en_US.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-08-20 13:01-0400\n"
+"POT-Creation-Date: 2019-08-22 15:20-0400\n"
 "PO-Revision-Date: 2018-07-27 11:55-0700\n"
 "Last-Translator: \n"
 "Language-Team: \n"
@@ -326,6 +326,14 @@ msgstr ""
 msgid "Buffer incorrect size. Should be %d bytes."
 msgstr ""
 
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is not a bytearray."
+msgstr ""
+
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is too small"
+msgstr ""
+
 #: ports/nrf/common-hal/audiopwmio/PWMAudioOut.c
 #, c-format
 msgid "Buffer length %d too big. It must be less than %d"
@@ -509,6 +517,10 @@ msgstr ""
 msgid "Destination capacity is smaller than destination_length."
 msgstr ""
 
+#: shared-bindings/displayio/Display.c
+msgid "Display must have a 16 bit colorspace."
+msgstr ""
+
 #: shared-bindings/displayio/Display.c
 msgid "Display rotation must be in 90 degree increments"
 msgstr ""
@@ -1297,9 +1309,6 @@ msgid "Unsupported pull value."
 msgstr ""
 
 #: ports/nrf/common-hal/bleio/Characteristic.c
-msgid "Value length  required fixed length"
-msgstr ""
-
 #: ports/nrf/common-hal/bleio/Descriptor.c
 msgid "Value length != required fixed length"
 msgstr ""
diff --git a/locale/en_x_pirate.po b/locale/en_x_pirate.po
index 34bb307f35..08b3db299a 100644
--- a/locale/en_x_pirate.po
+++ b/locale/en_x_pirate.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-08-20 13:01-0400\n"
+"POT-Creation-Date: 2019-08-22 15:20-0400\n"
 "PO-Revision-Date: 2018-07-27 11:55-0700\n"
 "Last-Translator: \n"
 "Language-Team: @sommersoft, @MrCertainly\n"
@@ -330,6 +330,14 @@ msgstr ""
 msgid "Buffer incorrect size. Should be %d bytes."
 msgstr ""
 
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is not a bytearray."
+msgstr ""
+
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is too small"
+msgstr ""
+
 #: ports/nrf/common-hal/audiopwmio/PWMAudioOut.c
 #, c-format
 msgid "Buffer length %d too big. It must be less than %d"
@@ -513,6 +521,10 @@ msgstr ""
 msgid "Destination capacity is smaller than destination_length."
 msgstr ""
 
+#: shared-bindings/displayio/Display.c
+msgid "Display must have a 16 bit colorspace."
+msgstr ""
+
 #: shared-bindings/displayio/Display.c
 msgid "Display rotation must be in 90 degree increments"
 msgstr ""
@@ -1301,9 +1313,6 @@ msgid "Unsupported pull value."
 msgstr ""
 
 #: ports/nrf/common-hal/bleio/Characteristic.c
-msgid "Value length  required fixed length"
-msgstr ""
-
 #: ports/nrf/common-hal/bleio/Descriptor.c
 msgid "Value length != required fixed length"
 msgstr ""
diff --git a/locale/es.po b/locale/es.po
index 5a4f270ef6..3b1b8ece5e 100644
--- a/locale/es.po
+++ b/locale/es.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-08-20 13:01-0400\n"
+"POT-Creation-Date: 2019-08-22 15:20-0400\n"
 "PO-Revision-Date: 2018-08-24 22:56-0500\n"
 "Last-Translator: \n"
 "Language-Team: \n"
@@ -334,6 +334,14 @@ msgstr "El brillo no se puede ajustar"
 msgid "Buffer incorrect size. Should be %d bytes."
 msgstr "Tamaño de buffer incorrecto. Debe ser de %d bytes."
 
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is not a bytearray."
+msgstr ""
+
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is too small"
+msgstr ""
+
 #: ports/nrf/common-hal/audiopwmio/PWMAudioOut.c
 #, c-format
 msgid "Buffer length %d too big. It must be less than %d"
@@ -517,6 +525,10 @@ msgstr ""
 msgid "Destination capacity is smaller than destination_length."
 msgstr "Capacidad de destino es mas pequeña que destination_length."
 
+#: shared-bindings/displayio/Display.c
+msgid "Display must have a 16 bit colorspace."
+msgstr ""
+
 #: shared-bindings/displayio/Display.c
 msgid "Display rotation must be in 90 degree increments"
 msgstr "Rotación de display debe ser en incrementos de 90 grados"
@@ -1338,9 +1350,6 @@ msgid "Unsupported pull value."
 msgstr "valor pull no soportado."
 
 #: ports/nrf/common-hal/bleio/Characteristic.c
-msgid "Value length  required fixed length"
-msgstr ""
-
 #: ports/nrf/common-hal/bleio/Descriptor.c
 msgid "Value length != required fixed length"
 msgstr ""
diff --git a/locale/fil.po b/locale/fil.po
index 65b73cc6d6..3abdd882f8 100644
--- a/locale/fil.po
+++ b/locale/fil.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-08-20 13:01-0400\n"
+"POT-Creation-Date: 2019-08-22 15:20-0400\n"
 "PO-Revision-Date: 2018-12-20 22:15-0800\n"
 "Last-Translator: Timothy <me@timothygarcia.ca>\n"
 "Language-Team: fil\n"
@@ -332,6 +332,14 @@ msgstr ""
 msgid "Buffer incorrect size. Should be %d bytes."
 msgstr "Mali ang size ng buffer. Dapat %d bytes."
 
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is not a bytearray."
+msgstr ""
+
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is too small"
+msgstr ""
+
 #: ports/nrf/common-hal/audiopwmio/PWMAudioOut.c
 #, c-format
 msgid "Buffer length %d too big. It must be less than %d"
@@ -521,6 +529,10 @@ msgid "Destination capacity is smaller than destination_length."
 msgstr ""
 "Ang kapasidad ng destinasyon ay mas maliit kaysa sa destination_length."
 
+#: shared-bindings/displayio/Display.c
+msgid "Display must have a 16 bit colorspace."
+msgstr ""
+
 #: shared-bindings/displayio/Display.c
 msgid "Display rotation must be in 90 degree increments"
 msgstr ""
@@ -1342,9 +1354,6 @@ msgid "Unsupported pull value."
 msgstr "Hindi suportado ang pull value."
 
 #: ports/nrf/common-hal/bleio/Characteristic.c
-msgid "Value length  required fixed length"
-msgstr ""
-
 #: ports/nrf/common-hal/bleio/Descriptor.c
 msgid "Value length != required fixed length"
 msgstr ""
diff --git a/locale/fr.po b/locale/fr.po
index cf35d20447..c9c81da61e 100644
--- a/locale/fr.po
+++ b/locale/fr.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: 0.1\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-08-20 13:01-0400\n"
+"POT-Creation-Date: 2019-08-22 15:20-0400\n"
 "PO-Revision-Date: 2019-04-14 20:05+0100\n"
 "Last-Translator: Pierrick Couturier <arofarn@arofarn.info>\n"
 "Language-Team: fr\n"
@@ -337,6 +337,14 @@ msgstr "Luminosité non-ajustable"
 msgid "Buffer incorrect size. Should be %d bytes."
 msgstr "Tampon de taille incorrect. Devrait être de %d octets."
 
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is not a bytearray."
+msgstr ""
+
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is too small"
+msgstr ""
+
 #: ports/nrf/common-hal/audiopwmio/PWMAudioOut.c
 #, c-format
 msgid "Buffer length %d too big. It must be less than %d"
@@ -525,6 +533,10 @@ msgstr ""
 msgid "Destination capacity is smaller than destination_length."
 msgstr "La capacité de destination est plus petite que 'destination_length'."
 
+#: shared-bindings/displayio/Display.c
+msgid "Display must have a 16 bit colorspace."
+msgstr ""
+
 #: shared-bindings/displayio/Display.c
 msgid "Display rotation must be in 90 degree increments"
 msgstr "La rotation d'affichage doit se faire par incréments de 90 degrés"
@@ -1367,9 +1379,6 @@ msgid "Unsupported pull value."
 msgstr "Valeur de tirage 'pull' non supportée."
 
 #: ports/nrf/common-hal/bleio/Characteristic.c
-msgid "Value length  required fixed length"
-msgstr ""
-
 #: ports/nrf/common-hal/bleio/Descriptor.c
 msgid "Value length != required fixed length"
 msgstr ""
diff --git a/locale/it_IT.po b/locale/it_IT.po
index 96227d0ce9..4fb0b502f9 100644
--- a/locale/it_IT.po
+++ b/locale/it_IT.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-08-20 13:01-0400\n"
+"POT-Creation-Date: 2019-08-22 15:20-0400\n"
 "PO-Revision-Date: 2018-10-02 16:27+0200\n"
 "Last-Translator: Enrico Paganin <enrico.paganin@mail.com>\n"
 "Language-Team: \n"
@@ -332,6 +332,14 @@ msgstr "Illiminazione non è regolabile"
 msgid "Buffer incorrect size. Should be %d bytes."
 msgstr "Buffer di lunghezza non valida. Dovrebbe essere di %d bytes."
 
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is not a bytearray."
+msgstr ""
+
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is too small"
+msgstr ""
+
 #: ports/nrf/common-hal/audiopwmio/PWMAudioOut.c
 #, c-format
 msgid "Buffer length %d too big. It must be less than %d"
@@ -521,6 +529,10 @@ msgstr ""
 msgid "Destination capacity is smaller than destination_length."
 msgstr "La capacità di destinazione è più piccola di destination_length."
 
+#: shared-bindings/displayio/Display.c
+msgid "Display must have a 16 bit colorspace."
+msgstr ""
+
 #: shared-bindings/displayio/Display.c
 msgid "Display rotation must be in 90 degree increments"
 msgstr ""
@@ -1341,9 +1353,6 @@ msgid "Unsupported pull value."
 msgstr "Valore di pull non supportato."
 
 #: ports/nrf/common-hal/bleio/Characteristic.c
-msgid "Value length  required fixed length"
-msgstr ""
-
 #: ports/nrf/common-hal/bleio/Descriptor.c
 msgid "Value length != required fixed length"
 msgstr ""
diff --git a/locale/pl.po b/locale/pl.po
index 7a242835df..8d995d93ab 100644
--- a/locale/pl.po
+++ b/locale/pl.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-08-20 13:01-0400\n"
+"POT-Creation-Date: 2019-08-22 15:20-0400\n"
 "PO-Revision-Date: 2019-03-19 18:37-0700\n"
 "Last-Translator: Radomir Dopieralski <circuitpython@sheep.art.pl>\n"
 "Language-Team: pl\n"
@@ -329,6 +329,14 @@ msgstr "Jasność nie jest regulowana"
 msgid "Buffer incorrect size. Should be %d bytes."
 msgstr "Zła wielkość bufora. Powinno być %d bajtów."
 
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is not a bytearray."
+msgstr ""
+
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is too small"
+msgstr ""
+
 #: ports/nrf/common-hal/audiopwmio/PWMAudioOut.c
 #, c-format
 msgid "Buffer length %d too big. It must be less than %d"
@@ -512,6 +520,10 @@ msgstr ""
 msgid "Destination capacity is smaller than destination_length."
 msgstr "Pojemność celu mniejsza od destination_length."
 
+#: shared-bindings/displayio/Display.c
+msgid "Display must have a 16 bit colorspace."
+msgstr ""
+
 #: shared-bindings/displayio/Display.c
 msgid "Display rotation must be in 90 degree increments"
 msgstr "Wyświetlacz można obracać co 90 stopni"
@@ -1317,9 +1329,6 @@ msgid "Unsupported pull value."
 msgstr "Zła wartość podciągnięcia."
 
 #: ports/nrf/common-hal/bleio/Characteristic.c
-msgid "Value length  required fixed length"
-msgstr ""
-
 #: ports/nrf/common-hal/bleio/Descriptor.c
 msgid "Value length != required fixed length"
 msgstr ""
diff --git a/locale/pt_BR.po b/locale/pt_BR.po
index 2a5b62ec1d..6e7edbc2f7 100644
--- a/locale/pt_BR.po
+++ b/locale/pt_BR.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-08-20 13:01-0400\n"
+"POT-Creation-Date: 2019-08-22 15:20-0400\n"
 "PO-Revision-Date: 2018-10-02 21:14-0000\n"
 "Last-Translator: \n"
 "Language-Team: \n"
@@ -329,6 +329,14 @@ msgstr ""
 msgid "Buffer incorrect size. Should be %d bytes."
 msgstr "Buffer de tamanho incorreto. Deve ser %d bytes."
 
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is not a bytearray."
+msgstr ""
+
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is too small"
+msgstr ""
+
 #: ports/nrf/common-hal/audiopwmio/PWMAudioOut.c
 #, c-format
 msgid "Buffer length %d too big. It must be less than %d"
@@ -516,6 +524,10 @@ msgstr ""
 msgid "Destination capacity is smaller than destination_length."
 msgstr ""
 
+#: shared-bindings/displayio/Display.c
+msgid "Display must have a 16 bit colorspace."
+msgstr ""
+
 #: shared-bindings/displayio/Display.c
 msgid "Display rotation must be in 90 degree increments"
 msgstr ""
@@ -1318,9 +1330,6 @@ msgid "Unsupported pull value."
 msgstr ""
 
 #: ports/nrf/common-hal/bleio/Characteristic.c
-msgid "Value length  required fixed length"
-msgstr ""
-
 #: ports/nrf/common-hal/bleio/Descriptor.c
 msgid "Value length != required fixed length"
 msgstr ""
diff --git a/locale/zh_Latn_pinyin.po b/locale/zh_Latn_pinyin.po
index 67f3290807..9a380fefc4 100644
--- a/locale/zh_Latn_pinyin.po
+++ b/locale/zh_Latn_pinyin.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: circuitpython-cn\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-08-20 13:01-0400\n"
+"POT-Creation-Date: 2019-08-22 15:20-0400\n"
 "PO-Revision-Date: 2019-04-13 10:10-0700\n"
 "Last-Translator: hexthat\n"
 "Language-Team: Chinese Hanyu Pinyin\n"
@@ -330,6 +330,14 @@ msgstr "Liàngdù wúfǎ tiáozhěng"
 msgid "Buffer incorrect size. Should be %d bytes."
 msgstr "Huǎnchōng qū dàxiǎo bù zhèngquè. Yīnggāi shì %d zì jié."
 
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is not a bytearray."
+msgstr ""
+
+#: shared-bindings/displayio/Display.c
+msgid "Buffer is too small"
+msgstr ""
+
 #: ports/nrf/common-hal/audiopwmio/PWMAudioOut.c
 #, c-format
 msgid "Buffer length %d too big. It must be less than %d"
@@ -513,6 +521,10 @@ msgstr ""
 msgid "Destination capacity is smaller than destination_length."
 msgstr "Mùbiāo róngliàng xiǎoyú mùdì de_chángdù."
 
+#: shared-bindings/displayio/Display.c
+msgid "Display must have a 16 bit colorspace."
+msgstr ""
+
 #: shared-bindings/displayio/Display.c
 msgid "Display rotation must be in 90 degree increments"
 msgstr "Xiǎnshì xuánzhuǎn bìxū 90 dù jiā xīn"
@@ -1324,9 +1336,6 @@ msgid "Unsupported pull value."
 msgstr "Bù zhīchí de lādòng zhí."
 
 #: ports/nrf/common-hal/bleio/Characteristic.c
-msgid "Value length  required fixed length"
-msgstr ""
-
 #: ports/nrf/common-hal/bleio/Descriptor.c
 msgid "Value length != required fixed length"
 msgstr ""
diff --git a/ports/atmel-samd/boards/itsybitsy_m0_express/mpconfigboard.mk b/ports/atmel-samd/boards/itsybitsy_m0_express/mpconfigboard.mk
index e427e94301..fd66f425da 100644
--- a/ports/atmel-samd/boards/itsybitsy_m0_express/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/itsybitsy_m0_express/mpconfigboard.mk
@@ -14,3 +14,6 @@ LONGINT_IMPL = MPZ
 
 CFLAGS_INLINE_LIMIT = 60
 SUPEROPT_GC = 0
+
+CIRCUITPY_I2CSLAVE = 0
+CIRCUITPY_RTC = 0
diff --git a/ports/atmel-samd/common-hal/rotaryio/IncrementalEncoder.c b/ports/atmel-samd/common-hal/rotaryio/IncrementalEncoder.c
index e3bcf395b5..0922718f96 100644
--- a/ports/atmel-samd/common-hal/rotaryio/IncrementalEncoder.c
+++ b/ports/atmel-samd/common-hal/rotaryio/IncrementalEncoder.c
@@ -35,7 +35,7 @@
 
 void common_hal_rotaryio_incrementalencoder_construct(rotaryio_incrementalencoder_obj_t* self,
     const mcu_pin_obj_t* pin_a, const mcu_pin_obj_t* pin_b) {
-    if (!pin_a->has_extint || !pin_a->has_extint) {
+    if (!pin_a->has_extint || !pin_b->has_extint) {
         mp_raise_RuntimeError(translate("Both pins must support hardware interrupts"));
     }
 
diff --git a/ports/nrf/boards/circuitplayground_bluefruit/mpconfigboard.h b/ports/nrf/boards/circuitplayground_bluefruit/mpconfigboard.h
index 04c7e8d606..1e55cd0260 100644
--- a/ports/nrf/boards/circuitplayground_bluefruit/mpconfigboard.h
+++ b/ports/nrf/boards/circuitplayground_bluefruit/mpconfigboard.h
@@ -34,10 +34,11 @@
 #define FLASH_SIZE                  (0x100000)
 #define FLASH_PAGE_SIZE             (4096)
 
-#define MICROPY_HW_NEOPIXEL         (&pin_P0_13)
-
 #define MICROPY_HW_LED_STATUS       (&pin_P1_14)
 
+// Unusually, board does not have a 32 kHz xtal. Nearly all boards do.
+#define BOARD_HAS_32KHZ_XTAL (0)
+
 #if QSPI_FLASH_FILESYSTEM
 #define MICROPY_QSPI_DATA0                NRF_GPIO_PIN_MAP(0, 21)
 #define MICROPY_QSPI_DATA1                NRF_GPIO_PIN_MAP(0, 23)
@@ -60,8 +61,6 @@
 
 #define BOARD_FLASH_SIZE (FLASH_SIZE - 0x4000 - CIRCUITPY_INTERNAL_NVM_SIZE)
 
-#define BOARD_HAS_CRYSTAL 1
-
 #define DEFAULT_I2C_BUS_SCL         (&pin_P0_04)
 #define DEFAULT_I2C_BUS_SDA         (&pin_P0_05)
 
diff --git a/ports/nrf/common-hal/bleio/Adapter.c b/ports/nrf/common-hal/bleio/Adapter.c
index 936dfcb9b0..15ae8840b6 100644
--- a/ports/nrf/common-hal/bleio/Adapter.c
+++ b/ports/nrf/common-hal/bleio/Adapter.c
@@ -47,8 +47,17 @@ STATIC void softdevice_assert_handler(uint32_t id, uint32_t pc, uint32_t info) {
 
 STATIC uint32_t ble_stack_enable(void) {
     nrf_clock_lf_cfg_t clock_config = {
-        .source = NRF_CLOCK_LF_SRC_XTAL,
-        .accuracy = NRF_CLOCK_LF_ACCURACY_20_PPM
+#if BOARD_HAS_32KHZ_XTAL
+        .source       = NRF_CLOCK_LF_SRC_XTAL,
+        .rc_ctiv      = 0,
+        .rc_temp_ctiv = 0,
+        .accuracy     = NRF_CLOCK_LF_ACCURACY_20_PPM,
+#else
+        .source       = NRF_CLOCK_LF_SRC_RC,
+        .rc_ctiv      = 16,
+        .rc_temp_ctiv = 2,
+        .accuracy     = NRF_CLOCK_LF_ACCURACY_250_PPM,
+#endif
     };
 
     uint32_t err_code = sd_softdevice_enable(&clock_config, softdevice_assert_handler);
diff --git a/ports/nrf/common-hal/bleio/Characteristic.c b/ports/nrf/common-hal/bleio/Characteristic.c
index 45e8d2495e..604d24d738 100644
--- a/ports/nrf/common-hal/bleio/Characteristic.c
+++ b/ports/nrf/common-hal/bleio/Characteristic.c
@@ -183,7 +183,7 @@ void common_hal_bleio_characteristic_set_value(bleio_characteristic_obj_t *self,
                                          (self->props & CHAR_PROP_WRITE_NO_RESPONSE));
         } else {
             if (self->fixed_length && bufinfo->len != self->max_length) {
-                mp_raise_ValueError(translate("Value length  required fixed length"));
+                mp_raise_ValueError(translate("Value length != required fixed length"));
             }
             if (bufinfo->len > self->max_length) {
                 mp_raise_ValueError(translate("Value length > max_length"));
diff --git a/ports/nrf/mpconfigport.h b/ports/nrf/mpconfigport.h
index 5ed521e859..0b755a156b 100644
--- a/ports/nrf/mpconfigport.h
+++ b/ports/nrf/mpconfigport.h
@@ -53,6 +53,11 @@
 
 #include "py/circuitpy_mpconfig.h"
 
+#ifndef BOARD_HAS_32KHZ_XTAL
+// Assume crystal is present, which is the most common case.
+#define BOARD_HAS_32KHZ_XTAL (1)
+#endif
+
 #define MICROPY_PORT_ROOT_POINTERS \
     CIRCUITPY_COMMON_ROOT_POINTERS \
     ble_drv_evt_handler_entry_t* ble_drv_evt_handler_entries; \
diff --git a/ports/nrf/peripherals/nrf/clocks.c b/ports/nrf/peripherals/nrf/clocks.c
index 4acb878db9..269365cc94 100644
--- a/ports/nrf/peripherals/nrf/clocks.c
+++ b/ports/nrf/peripherals/nrf/clocks.c
@@ -26,11 +26,15 @@
  */
 
 #include "nrfx.h"
+#include "mpconfigport.h"
 
 void nrf_peripherals_clocks_init(void) {
-    // Set low-frequency clock source to be crystal. If there's a crystalless board, this will need to be
-    // generalized.
+
+#if BOARD_HAS_32KHZ_XTAL
     NRF_CLOCK->LFCLKSRC = (uint32_t)((CLOCK_LFCLKSRC_SRC_Xtal << CLOCK_LFCLKSRC_SRC_Pos) & CLOCK_LFCLKSRC_SRC_Msk);
+#else
+    NRF_CLOCK->LFCLKSRC = (uint32_t)((CLOCK_LFCLKSRC_SRC_RC << CLOCK_LFCLKSRC_SRC_Pos) & CLOCK_LFCLKSRC_SRC_Msk);
+#endif
     NRF_CLOCK->TASKS_LFCLKSTART = 1UL;
 
     // Wait for clocks to start.
diff --git a/shared-bindings/displayio/Display.c b/shared-bindings/displayio/Display.c
index 9cb4d6e742..0c48b0cc51 100644
--- a/shared-bindings/displayio/Display.c
+++ b/shared-bindings/displayio/Display.c
@@ -337,6 +337,23 @@ const mp_obj_property_t displayio_display_height_obj = {
               (mp_obj_t)&mp_const_none_obj},
 };
 
+//|   .. attribute:: rotation
+//|
+//|     The rotation of the display as an int in degrees.
+//|
+STATIC mp_obj_t displayio_display_obj_get_rotation(mp_obj_t self_in) {
+    displayio_display_obj_t *self = native_display(self_in);
+    return MP_OBJ_NEW_SMALL_INT(common_hal_displayio_display_get_rotation(self));
+}
+MP_DEFINE_CONST_FUN_OBJ_1(displayio_display_get_rotation_obj, displayio_display_obj_get_rotation);
+
+const mp_obj_property_t displayio_display_rotation_obj = {
+    .base.type = &mp_type_property,
+    .proxy = {(mp_obj_t)&displayio_display_get_rotation_obj,
+              (mp_obj_t)&mp_const_none_obj,
+              (mp_obj_t)&mp_const_none_obj},
+};
+
 //|   .. attribute:: bus
 //|
 //|	The bus being used by the display
@@ -356,16 +373,81 @@ const mp_obj_property_t displayio_display_bus_obj = {
 };
 
 
+//|   .. method:: fill_row(y, buffer)
+//|
+//|     Extract the pixels from a single row
+//|
+//|     :param int y: The top edge of the area
+//|     :param bytearray buffer: The buffer in which to place the pixel data
+STATIC mp_obj_t displayio_display_obj_fill_row(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
+    enum { ARG_y, ARG_buffer };
+    static const mp_arg_t allowed_args[] = {
+        { MP_QSTR_y, MP_ARG_INT | MP_ARG_REQUIRED, {.u_int = -1} },
+        { MP_QSTR_buffer, MP_ARG_OBJ | MP_ARG_REQUIRED, {} },
+    };
+    mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
+    mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
+    displayio_display_obj_t *self = native_display(pos_args[0]);
+    mp_int_t y = args[ARG_y].u_int;
+    mp_obj_t *result = args[ARG_buffer].u_obj;
+
+    mp_buffer_info_t bufinfo;
+    mp_get_buffer_raise(result, &bufinfo, MP_BUFFER_WRITE);
+
+    if (bufinfo.typecode != BYTEARRAY_TYPECODE) {
+      mp_raise_ValueError(translate("Buffer is not a bytearray."));
+    }
+    if (self->colorspace.depth != 16) {
+      mp_raise_ValueError(translate("Display must have a 16 bit colorspace."));
+    }
+
+    displayio_area_t area = {
+      .x1 = 0,
+      .y1 = y,
+      .x2 = self->width,
+      .y2 = y + 1
+    };
+    uint8_t pixels_per_word = (sizeof(uint32_t) * 8) / self->colorspace.depth;
+    uint16_t buffer_size = self->width / pixels_per_word;
+    uint16_t pixels_per_buffer = displayio_area_size(&area);
+    if (pixels_per_buffer % pixels_per_word) {
+      buffer_size += 1;
+    }
+
+    uint32_t *result_buffer = bufinfo.buf;
+    size_t result_buffer_size = bufinfo.len;
+
+    if (result_buffer_size >= (buffer_size * 4)) {
+      volatile uint32_t mask_length = (pixels_per_buffer / 32) + 1;
+      uint32_t mask[mask_length];
+
+      for (uint16_t k = 0; k < mask_length; k++) {
+        mask[k] = 0x00000000;
+      }
+
+      displayio_display_fill_area(self, &area, mask, result_buffer);
+      return result;
+    } else {
+      mp_raise_ValueError(translate("Buffer is too small"));
+    }
+}
+MP_DEFINE_CONST_FUN_OBJ_KW(displayio_display_fill_row_obj, 1, displayio_display_obj_fill_row);
+
+
+
+
 STATIC const mp_rom_map_elem_t displayio_display_locals_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_show), MP_ROM_PTR(&displayio_display_show_obj) },
     { MP_ROM_QSTR(MP_QSTR_refresh_soon), MP_ROM_PTR(&displayio_display_refresh_soon_obj) },
     { MP_ROM_QSTR(MP_QSTR_wait_for_frame), MP_ROM_PTR(&displayio_display_wait_for_frame_obj) },
+    { MP_ROM_QSTR(MP_QSTR_fill_row), MP_ROM_PTR(&displayio_display_fill_row_obj) },
 
     { MP_ROM_QSTR(MP_QSTR_brightness), MP_ROM_PTR(&displayio_display_brightness_obj) },
     { MP_ROM_QSTR(MP_QSTR_auto_brightness), MP_ROM_PTR(&displayio_display_auto_brightness_obj) },
 
     { MP_ROM_QSTR(MP_QSTR_width), MP_ROM_PTR(&displayio_display_width_obj) },
     { MP_ROM_QSTR(MP_QSTR_height), MP_ROM_PTR(&displayio_display_height_obj) },
+    { MP_ROM_QSTR(MP_QSTR_rotation), MP_ROM_PTR(&displayio_display_rotation_obj) },
     { MP_ROM_QSTR(MP_QSTR_bus), MP_ROM_PTR(&displayio_display_bus_obj) },
 };
 STATIC MP_DEFINE_CONST_DICT(displayio_display_locals_dict, displayio_display_locals_dict_table);
diff --git a/shared-bindings/displayio/Display.h b/shared-bindings/displayio/Display.h
index a8938bbcdf..e871cfc5c4 100644
--- a/shared-bindings/displayio/Display.h
+++ b/shared-bindings/displayio/Display.h
@@ -69,6 +69,7 @@ void common_hal_displayio_display_set_auto_brightness(displayio_display_obj_t* s
 
 uint16_t common_hal_displayio_display_get_width(displayio_display_obj_t* self);
 uint16_t common_hal_displayio_display_get_height(displayio_display_obj_t* self);
+uint16_t common_hal_displayio_display_get_rotation(displayio_display_obj_t* self);
 
 mp_float_t common_hal_displayio_display_get_brightness(displayio_display_obj_t* self);
 bool common_hal_displayio_display_set_brightness(displayio_display_obj_t* self, mp_float_t brightness);
diff --git a/shared-module/displayio/Display.c b/shared-module/displayio/Display.c
index c23c66b8b3..d11813b8c5 100644
--- a/shared-module/displayio/Display.c
+++ b/shared-module/displayio/Display.c
@@ -119,7 +119,7 @@ void common_hal_displayio_display_construct(displayio_display_obj_t* self,
 
     self->width = width;
     self->height = height;
-    rotation = rotation % 360;
+    self->rotation = rotation % 360;
     self->transform.x = 0;
     self->transform.y = 0;
     self->transform.scale = 1;
@@ -257,6 +257,10 @@ uint16_t common_hal_displayio_display_get_height(displayio_display_obj_t* self){
     return self->height;
 }
 
+uint16_t common_hal_displayio_display_get_rotation(displayio_display_obj_t* self){
+    return self->rotation;
+}
+
 void common_hal_displayio_display_set_auto_brightness(displayio_display_obj_t* self, bool auto_brightness) {
     self->auto_brightness = auto_brightness;
 }
diff --git a/shared-module/displayio/Display.h b/shared-module/displayio/Display.h
index 96d1c06d57..74ae175b1e 100644
--- a/shared-module/displayio/Display.h
+++ b/shared-module/displayio/Display.h
@@ -55,6 +55,7 @@ typedef struct {
     mp_float_t current_brightness;
     uint16_t width;
     uint16_t height;
+    uint16_t rotation;
     _displayio_colorspace_t colorspace;
     int16_t colstart;
     int16_t rowstart;