diff --git a/locale/ID.po b/locale/ID.po
index 182dd2679d..01f461392f 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: 2020-02-10 11:46-0500\n"
+"POT-Creation-Date: 2020-02-19 08:44+0000\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"
@@ -462,6 +462,10 @@ msgstr ""
 msgid "Cannot set value when direction is input."
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Cannot specify RTS or CTS in RS485 mode"
+msgstr ""
+
 #: py/objslice.c
 msgid "Cannot subclass slice"
 msgstr ""
@@ -1183,6 +1187,10 @@ msgstr ""
 msgid "RNG Init Error"
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "RS485 inversion specified when not in RS485 mode"
+msgstr ""
+
 #: ports/cxd56/common-hal/rtc/RTC.c ports/mimxrt10xx/common-hal/rtc/RTC.c
 #: ports/nrf/common-hal/rtc/RTC.c
 msgid "RTC calibration is not supported on this board"
@@ -1192,6 +1200,11 @@ msgstr ""
 msgid "RTC is not supported on this board"
 msgstr ""
 
+#: ports/atmel-samd/common-hal/busio/UART.c ports/cxd56/common-hal/busio/UART.c
+#: ports/nrf/common-hal/busio/UART.c ports/stm32f4/common-hal/busio/UART.c
+msgid "RTS/CTS/RS485 Not yet supported on this device"
+msgstr ""
+
 #: ports/stm32f4/common-hal/os/__init__.c
 msgid "Random number generation error"
 msgstr ""
@@ -1255,6 +1268,14 @@ msgstr "Nilai sampel terlalu tinggi. Nilai harus kurang dari %d"
 msgid "Scan already in progess. Stop with stop_scan."
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected CTS pin not valid"
+msgstr ""
+
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected RTS pin not valid"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/audiobusio/I2SOut.c
 #: ports/atmel-samd/common-hal/audiobusio/PDMIn.c
 msgid "Serializer in use"
diff --git a/locale/circuitpython.pot b/locale/circuitpython.pot
index e067213560..354dbc4ba4 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: 2020-02-12 11:31-0800\n"
+"POT-Creation-Date: 2020-02-19 08:44+0000\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"
@@ -452,6 +452,10 @@ msgstr ""
 msgid "Cannot set value when direction is input."
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Cannot specify RTS or CTS in RS485 mode"
+msgstr ""
+
 #: py/objslice.c
 msgid "Cannot subclass slice"
 msgstr ""
@@ -1169,6 +1173,10 @@ msgstr ""
 msgid "RNG Init Error"
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "RS485 inversion specified when not in RS485 mode"
+msgstr ""
+
 #: ports/cxd56/common-hal/rtc/RTC.c ports/mimxrt10xx/common-hal/rtc/RTC.c
 #: ports/nrf/common-hal/rtc/RTC.c
 msgid "RTC calibration is not supported on this board"
@@ -1178,6 +1186,11 @@ msgstr ""
 msgid "RTC is not supported on this board"
 msgstr ""
 
+#: ports/atmel-samd/common-hal/busio/UART.c ports/cxd56/common-hal/busio/UART.c
+#: ports/nrf/common-hal/busio/UART.c ports/stm32f4/common-hal/busio/UART.c
+msgid "RTS/CTS/RS485 Not yet supported on this device"
+msgstr ""
+
 #: ports/stm32f4/common-hal/os/__init__.c
 msgid "Random number generation error"
 msgstr ""
@@ -1239,6 +1252,14 @@ msgstr ""
 msgid "Scan already in progess. Stop with stop_scan."
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected CTS pin not valid"
+msgstr ""
+
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected RTS pin not valid"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/audiobusio/I2SOut.c
 #: ports/atmel-samd/common-hal/audiobusio/PDMIn.c
 msgid "Serializer in use"
diff --git a/locale/de_DE.po b/locale/de_DE.po
index a5bb053abd..056f56d749 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: 2020-02-10 11:46-0500\n"
+"POT-Creation-Date: 2020-02-19 08:44+0000\n"
 "PO-Revision-Date: 2018-07-27 11:55-0700\n"
 "Last-Translator: Pascal Deneaux\n"
 "Language-Team: Sebastian Plamauer, Pascal Deneaux\n"
@@ -456,6 +456,10 @@ msgstr "Reset zum bootloader nicht möglich da bootloader nicht vorhanden"
 msgid "Cannot set value when direction is input."
 msgstr "Der Wert kann nicht gesetzt werden, wenn die Richtung input ist."
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Cannot specify RTS or CTS in RS485 mode"
+msgstr ""
+
 #: py/objslice.c
 msgid "Cannot subclass slice"
 msgstr ""
@@ -1186,6 +1190,10 @@ msgstr ""
 msgid "RNG Init Error"
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "RS485 inversion specified when not in RS485 mode"
+msgstr ""
+
 #: ports/cxd56/common-hal/rtc/RTC.c ports/mimxrt10xx/common-hal/rtc/RTC.c
 #: ports/nrf/common-hal/rtc/RTC.c
 msgid "RTC calibration is not supported on this board"
@@ -1195,6 +1203,11 @@ msgstr "Die RTC-Kalibrierung wird auf diesem Board nicht unterstützt"
 msgid "RTC is not supported on this board"
 msgstr "Eine RTC wird auf diesem Board nicht unterstützt"
 
+#: ports/atmel-samd/common-hal/busio/UART.c ports/cxd56/common-hal/busio/UART.c
+#: ports/nrf/common-hal/busio/UART.c ports/stm32f4/common-hal/busio/UART.c
+msgid "RTS/CTS/RS485 Not yet supported on this device"
+msgstr ""
+
 #: ports/stm32f4/common-hal/os/__init__.c
 msgid "Random number generation error"
 msgstr ""
@@ -1256,6 +1269,14 @@ msgstr "Abtastrate zu hoch. Wert muss unter %d liegen"
 msgid "Scan already in progess. Stop with stop_scan."
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected CTS pin not valid"
+msgstr ""
+
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected RTS pin not valid"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/audiobusio/I2SOut.c
 #: ports/atmel-samd/common-hal/audiobusio/PDMIn.c
 msgid "Serializer in use"
diff --git a/locale/en_US.po b/locale/en_US.po
index 5485810a31..58c798ce4b 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: 2020-02-10 11:46-0500\n"
+"POT-Creation-Date: 2020-02-19 08:44+0000\n"
 "PO-Revision-Date: 2018-07-27 11:55-0700\n"
 "Last-Translator: \n"
 "Language-Team: \n"
@@ -452,6 +452,10 @@ msgstr ""
 msgid "Cannot set value when direction is input."
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Cannot specify RTS or CTS in RS485 mode"
+msgstr ""
+
 #: py/objslice.c
 msgid "Cannot subclass slice"
 msgstr ""
@@ -1169,6 +1173,10 @@ msgstr ""
 msgid "RNG Init Error"
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "RS485 inversion specified when not in RS485 mode"
+msgstr ""
+
 #: ports/cxd56/common-hal/rtc/RTC.c ports/mimxrt10xx/common-hal/rtc/RTC.c
 #: ports/nrf/common-hal/rtc/RTC.c
 msgid "RTC calibration is not supported on this board"
@@ -1178,6 +1186,11 @@ msgstr ""
 msgid "RTC is not supported on this board"
 msgstr ""
 
+#: ports/atmel-samd/common-hal/busio/UART.c ports/cxd56/common-hal/busio/UART.c
+#: ports/nrf/common-hal/busio/UART.c ports/stm32f4/common-hal/busio/UART.c
+msgid "RTS/CTS/RS485 Not yet supported on this device"
+msgstr ""
+
 #: ports/stm32f4/common-hal/os/__init__.c
 msgid "Random number generation error"
 msgstr ""
@@ -1239,6 +1252,14 @@ msgstr ""
 msgid "Scan already in progess. Stop with stop_scan."
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected CTS pin not valid"
+msgstr ""
+
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected RTS pin not valid"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/audiobusio/I2SOut.c
 #: ports/atmel-samd/common-hal/audiobusio/PDMIn.c
 msgid "Serializer in use"
diff --git a/locale/en_x_pirate.po b/locale/en_x_pirate.po
index 517d067dad..e2ee9c887d 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: 2020-02-10 11:46-0500\n"
+"POT-Creation-Date: 2020-02-19 08:44+0000\n"
 "PO-Revision-Date: 2018-07-27 11:55-0700\n"
 "Last-Translator: \n"
 "Language-Team: @sommersoft, @MrCertainly\n"
@@ -456,6 +456,10 @@ msgstr ""
 msgid "Cannot set value when direction is input."
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Cannot specify RTS or CTS in RS485 mode"
+msgstr ""
+
 #: py/objslice.c
 msgid "Cannot subclass slice"
 msgstr ""
@@ -1173,6 +1177,10 @@ msgstr ""
 msgid "RNG Init Error"
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "RS485 inversion specified when not in RS485 mode"
+msgstr ""
+
 #: ports/cxd56/common-hal/rtc/RTC.c ports/mimxrt10xx/common-hal/rtc/RTC.c
 #: ports/nrf/common-hal/rtc/RTC.c
 msgid "RTC calibration is not supported on this board"
@@ -1182,6 +1190,11 @@ msgstr ""
 msgid "RTC is not supported on this board"
 msgstr ""
 
+#: ports/atmel-samd/common-hal/busio/UART.c ports/cxd56/common-hal/busio/UART.c
+#: ports/nrf/common-hal/busio/UART.c ports/stm32f4/common-hal/busio/UART.c
+msgid "RTS/CTS/RS485 Not yet supported on this device"
+msgstr ""
+
 #: ports/stm32f4/common-hal/os/__init__.c
 msgid "Random number generation error"
 msgstr ""
@@ -1243,6 +1256,14 @@ msgstr ""
 msgid "Scan already in progess. Stop with stop_scan."
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected CTS pin not valid"
+msgstr ""
+
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected RTS pin not valid"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/audiobusio/I2SOut.c
 #: ports/atmel-samd/common-hal/audiobusio/PDMIn.c
 msgid "Serializer in use"
diff --git a/locale/es.po b/locale/es.po
index 76f0799249..8d445a469a 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: 2020-02-10 11:46-0500\n"
+"POT-Creation-Date: 2020-02-19 08:44+0000\n"
 "PO-Revision-Date: 2018-08-24 22:56-0500\n"
 "Last-Translator: \n"
 "Language-Team: \n"
@@ -458,6 +458,10 @@ msgstr "No se puede reiniciar a bootloader porque no hay bootloader presente."
 msgid "Cannot set value when direction is input."
 msgstr "No se puede asignar un valor cuando la dirección es input."
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Cannot specify RTS or CTS in RS485 mode"
+msgstr ""
+
 #: py/objslice.c
 msgid "Cannot subclass slice"
 msgstr "Cannot subclass slice"
@@ -1185,6 +1189,10 @@ msgstr ""
 msgid "RNG Init Error"
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "RS485 inversion specified when not in RS485 mode"
+msgstr ""
+
 #: ports/cxd56/common-hal/rtc/RTC.c ports/mimxrt10xx/common-hal/rtc/RTC.c
 #: ports/nrf/common-hal/rtc/RTC.c
 msgid "RTC calibration is not supported on this board"
@@ -1194,6 +1202,11 @@ msgstr "Calibración de RTC no es soportada en esta placa"
 msgid "RTC is not supported on this board"
 msgstr "RTC no soportado en esta placa"
 
+#: ports/atmel-samd/common-hal/busio/UART.c ports/cxd56/common-hal/busio/UART.c
+#: ports/nrf/common-hal/busio/UART.c ports/stm32f4/common-hal/busio/UART.c
+msgid "RTS/CTS/RS485 Not yet supported on this device"
+msgstr ""
+
 #: ports/stm32f4/common-hal/os/__init__.c
 msgid "Random number generation error"
 msgstr ""
@@ -1256,6 +1269,14 @@ msgstr "Frecuencia de muestreo demasiado alta. Debe ser menor a %d"
 msgid "Scan already in progess. Stop with stop_scan."
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected CTS pin not valid"
+msgstr ""
+
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected RTS pin not valid"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/audiobusio/I2SOut.c
 #: ports/atmel-samd/common-hal/audiobusio/PDMIn.c
 msgid "Serializer in use"
diff --git a/locale/fil.po b/locale/fil.po
index 187c31b538..b8b61d723b 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: 2020-02-10 11:46-0500\n"
+"POT-Creation-Date: 2020-02-19 08:44+0000\n"
 "PO-Revision-Date: 2018-12-20 22:15-0800\n"
 "Last-Translator: Timothy <me@timothygarcia.ca>\n"
 "Language-Team: fil\n"
@@ -460,6 +460,10 @@ msgstr "Hindi ma-reset sa bootloader dahil walang bootloader."
 msgid "Cannot set value when direction is input."
 msgstr "Hindi ma i-set ang value kapag ang direksyon ay input."
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Cannot specify RTS or CTS in RS485 mode"
+msgstr ""
+
 #: py/objslice.c
 msgid "Cannot subclass slice"
 msgstr "Hindi magawa ang sublcass slice"
@@ -1191,6 +1195,10 @@ msgstr ""
 msgid "RNG Init Error"
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "RS485 inversion specified when not in RS485 mode"
+msgstr ""
+
 #: ports/cxd56/common-hal/rtc/RTC.c ports/mimxrt10xx/common-hal/rtc/RTC.c
 #: ports/nrf/common-hal/rtc/RTC.c
 msgid "RTC calibration is not supported on this board"
@@ -1200,6 +1208,11 @@ msgstr "RTC calibration ay hindi supportado ng board na ito"
 msgid "RTC is not supported on this board"
 msgstr "Hindi supportado ang RTC sa board na ito"
 
+#: ports/atmel-samd/common-hal/busio/UART.c ports/cxd56/common-hal/busio/UART.c
+#: ports/nrf/common-hal/busio/UART.c ports/stm32f4/common-hal/busio/UART.c
+msgid "RTS/CTS/RS485 Not yet supported on this device"
+msgstr ""
+
 #: ports/stm32f4/common-hal/os/__init__.c
 msgid "Random number generation error"
 msgstr ""
@@ -1262,6 +1275,14 @@ msgstr "Sample rate ay masyadong mataas. Ito ay dapat hindi hiigit sa %d"
 msgid "Scan already in progess. Stop with stop_scan."
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected CTS pin not valid"
+msgstr ""
+
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected RTS pin not valid"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/audiobusio/I2SOut.c
 #: ports/atmel-samd/common-hal/audiobusio/PDMIn.c
 msgid "Serializer in use"
diff --git a/locale/fr.po b/locale/fr.po
index 8b66e5c0d6..625b4e91aa 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: 2020-02-10 11:46-0500\n"
+"POT-Creation-Date: 2020-02-19 08:44+0000\n"
 "PO-Revision-Date: 2019-04-14 20:05+0100\n"
 "Last-Translator: Pierrick Couturier <arofarn@arofarn.info>\n"
 "Language-Team: fr\n"
@@ -465,6 +465,10 @@ msgstr ""
 msgid "Cannot set value when direction is input."
 msgstr "Impossible d'affecter une valeur quand la direction est 'input'."
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Cannot specify RTS or CTS in RS485 mode"
+msgstr ""
+
 #: py/objslice.c
 msgid "Cannot subclass slice"
 msgstr "On ne peut faire de sous-classes de tranches"
@@ -1204,6 +1208,10 @@ msgstr ""
 msgid "RNG Init Error"
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "RS485 inversion specified when not in RS485 mode"
+msgstr ""
+
 #: ports/cxd56/common-hal/rtc/RTC.c ports/mimxrt10xx/common-hal/rtc/RTC.c
 #: ports/nrf/common-hal/rtc/RTC.c
 msgid "RTC calibration is not supported on this board"
@@ -1213,6 +1221,11 @@ msgstr "étalonnage de la RTC non supportée sur cette carte"
 msgid "RTC is not supported on this board"
 msgstr "RTC non supportée sur cette carte"
 
+#: ports/atmel-samd/common-hal/busio/UART.c ports/cxd56/common-hal/busio/UART.c
+#: ports/nrf/common-hal/busio/UART.c ports/stm32f4/common-hal/busio/UART.c
+msgid "RTS/CTS/RS485 Not yet supported on this device"
+msgstr ""
+
 #: ports/stm32f4/common-hal/os/__init__.c
 msgid "Random number generation error"
 msgstr ""
@@ -1276,6 +1289,14 @@ msgstr "Taux d'échantillonage trop élevé. Doit être inf. à %d"
 msgid "Scan already in progess. Stop with stop_scan."
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected CTS pin not valid"
+msgstr ""
+
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected RTS pin not valid"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/audiobusio/I2SOut.c
 #: ports/atmel-samd/common-hal/audiobusio/PDMIn.c
 msgid "Serializer in use"
diff --git a/locale/it_IT.po b/locale/it_IT.po
index 3671a6ec23..93af9bdb86 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: 2020-02-10 11:46-0500\n"
+"POT-Creation-Date: 2020-02-19 08:44+0000\n"
 "PO-Revision-Date: 2018-10-02 16:27+0200\n"
 "Last-Translator: Enrico Paganin <enrico.paganin@mail.com>\n"
 "Language-Team: \n"
@@ -461,6 +461,10 @@ msgstr ""
 msgid "Cannot set value when direction is input."
 msgstr "non si può impostare un valore quando direzione è input"
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Cannot specify RTS or CTS in RS485 mode"
+msgstr ""
+
 #: py/objslice.c
 msgid "Cannot subclass slice"
 msgstr "Impossibile subclasare slice"
@@ -1200,6 +1204,10 @@ msgstr ""
 msgid "RNG Init Error"
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "RS485 inversion specified when not in RS485 mode"
+msgstr ""
+
 #: ports/cxd56/common-hal/rtc/RTC.c ports/mimxrt10xx/common-hal/rtc/RTC.c
 #: ports/nrf/common-hal/rtc/RTC.c
 msgid "RTC calibration is not supported on this board"
@@ -1209,6 +1217,11 @@ msgstr "calibrazione RTC non supportata su questa scheda"
 msgid "RTC is not supported on this board"
 msgstr "RTC non supportato su questa scheda"
 
+#: ports/atmel-samd/common-hal/busio/UART.c ports/cxd56/common-hal/busio/UART.c
+#: ports/nrf/common-hal/busio/UART.c ports/stm32f4/common-hal/busio/UART.c
+msgid "RTS/CTS/RS485 Not yet supported on this device"
+msgstr ""
+
 #: ports/stm32f4/common-hal/os/__init__.c
 msgid "Random number generation error"
 msgstr ""
@@ -1273,6 +1286,14 @@ msgstr ""
 msgid "Scan already in progess. Stop with stop_scan."
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected CTS pin not valid"
+msgstr ""
+
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected RTS pin not valid"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/audiobusio/I2SOut.c
 #: ports/atmel-samd/common-hal/audiobusio/PDMIn.c
 msgid "Serializer in use"
diff --git a/locale/ko.po b/locale/ko.po
index f1f550775d..04ab849d43 100644
--- a/locale/ko.po
+++ b/locale/ko.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2020-02-10 11:46-0500\n"
+"POT-Creation-Date: 2020-02-19 08:44+0000\n"
 "PO-Revision-Date: 2019-05-06 14:22-0700\n"
 "Last-Translator: \n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -456,6 +456,10 @@ msgstr ""
 msgid "Cannot set value when direction is input."
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Cannot specify RTS or CTS in RS485 mode"
+msgstr ""
+
 #: py/objslice.c
 msgid "Cannot subclass slice"
 msgstr ""
@@ -1173,6 +1177,10 @@ msgstr ""
 msgid "RNG Init Error"
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "RS485 inversion specified when not in RS485 mode"
+msgstr ""
+
 #: ports/cxd56/common-hal/rtc/RTC.c ports/mimxrt10xx/common-hal/rtc/RTC.c
 #: ports/nrf/common-hal/rtc/RTC.c
 msgid "RTC calibration is not supported on this board"
@@ -1182,6 +1190,11 @@ msgstr ""
 msgid "RTC is not supported on this board"
 msgstr ""
 
+#: ports/atmel-samd/common-hal/busio/UART.c ports/cxd56/common-hal/busio/UART.c
+#: ports/nrf/common-hal/busio/UART.c ports/stm32f4/common-hal/busio/UART.c
+msgid "RTS/CTS/RS485 Not yet supported on this device"
+msgstr ""
+
 #: ports/stm32f4/common-hal/os/__init__.c
 msgid "Random number generation error"
 msgstr ""
@@ -1243,6 +1256,14 @@ msgstr ""
 msgid "Scan already in progess. Stop with stop_scan."
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected CTS pin not valid"
+msgstr ""
+
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected RTS pin not valid"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/audiobusio/I2SOut.c
 #: ports/atmel-samd/common-hal/audiobusio/PDMIn.c
 msgid "Serializer in use"
diff --git a/locale/pl.po b/locale/pl.po
index ee95b2e7d1..d766191822 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: 2020-02-10 11:46-0500\n"
+"POT-Creation-Date: 2020-02-19 08:44+0000\n"
 "PO-Revision-Date: 2019-03-19 18:37-0700\n"
 "Last-Translator: Radomir Dopieralski <circuitpython@sheep.art.pl>\n"
 "Language-Team: pl\n"
@@ -455,6 +455,10 @@ msgstr "Nie można zrestartować -- nie ma bootloadera."
 msgid "Cannot set value when direction is input."
 msgstr "Nie można ustawić wartości w trybie wejścia"
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Cannot specify RTS or CTS in RS485 mode"
+msgstr ""
+
 #: py/objslice.c
 msgid "Cannot subclass slice"
 msgstr "Nie można dziedziczyć ze slice"
@@ -1174,6 +1178,10 @@ msgstr ""
 msgid "RNG Init Error"
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "RS485 inversion specified when not in RS485 mode"
+msgstr ""
+
 #: ports/cxd56/common-hal/rtc/RTC.c ports/mimxrt10xx/common-hal/rtc/RTC.c
 #: ports/nrf/common-hal/rtc/RTC.c
 msgid "RTC calibration is not supported on this board"
@@ -1183,6 +1191,11 @@ msgstr "Brak obsługi kalibracji RTC"
 msgid "RTC is not supported on this board"
 msgstr "Brak obsługi RTC"
 
+#: ports/atmel-samd/common-hal/busio/UART.c ports/cxd56/common-hal/busio/UART.c
+#: ports/nrf/common-hal/busio/UART.c ports/stm32f4/common-hal/busio/UART.c
+msgid "RTS/CTS/RS485 Not yet supported on this device"
+msgstr ""
+
 #: ports/stm32f4/common-hal/os/__init__.c
 msgid "Random number generation error"
 msgstr ""
@@ -1244,6 +1257,14 @@ msgstr "Zbyt wysoka częstotliwość próbkowania. Musi być mniejsza niż %d"
 msgid "Scan already in progess. Stop with stop_scan."
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected CTS pin not valid"
+msgstr ""
+
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected RTS pin not valid"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/audiobusio/I2SOut.c
 #: ports/atmel-samd/common-hal/audiobusio/PDMIn.c
 msgid "Serializer in use"
diff --git a/locale/pt_BR.po b/locale/pt_BR.po
index b94b14fcd5..b948003a18 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: 2020-02-10 11:46-0500\n"
+"POT-Creation-Date: 2020-02-19 08:44+0000\n"
 "PO-Revision-Date: 2018-10-02 21:14-0000\n"
 "Last-Translator: \n"
 "Language-Team: \n"
@@ -457,6 +457,10 @@ msgstr ""
 msgid "Cannot set value when direction is input."
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Cannot specify RTS or CTS in RS485 mode"
+msgstr ""
+
 #: py/objslice.c
 msgid "Cannot subclass slice"
 msgstr ""
@@ -1185,6 +1189,10 @@ msgstr ""
 msgid "RNG Init Error"
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "RS485 inversion specified when not in RS485 mode"
+msgstr ""
+
 #: ports/cxd56/common-hal/rtc/RTC.c ports/mimxrt10xx/common-hal/rtc/RTC.c
 #: ports/nrf/common-hal/rtc/RTC.c
 msgid "RTC calibration is not supported on this board"
@@ -1194,6 +1202,11 @@ msgstr "A calibração RTC não é suportada nesta placa"
 msgid "RTC is not supported on this board"
 msgstr "O RTC não é suportado nesta placa"
 
+#: ports/atmel-samd/common-hal/busio/UART.c ports/cxd56/common-hal/busio/UART.c
+#: ports/nrf/common-hal/busio/UART.c ports/stm32f4/common-hal/busio/UART.c
+msgid "RTS/CTS/RS485 Not yet supported on this device"
+msgstr ""
+
 #: ports/stm32f4/common-hal/os/__init__.c
 msgid "Random number generation error"
 msgstr ""
@@ -1256,6 +1269,14 @@ msgstr "Taxa de amostragem muito alta. Deve ser menor que %d"
 msgid "Scan already in progess. Stop with stop_scan."
 msgstr ""
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected CTS pin not valid"
+msgstr ""
+
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected RTS pin not valid"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/audiobusio/I2SOut.c
 #: ports/atmel-samd/common-hal/audiobusio/PDMIn.c
 msgid "Serializer in use"
diff --git a/locale/zh_Latn_pinyin.po b/locale/zh_Latn_pinyin.po
index dcb78828c6..9a9473436f 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: 2020-02-12 11:31-0800\n"
+"POT-Creation-Date: 2020-02-19 08:44+0000\n"
 "PO-Revision-Date: 2019-04-13 10:10-0700\n"
 "Last-Translator: hexthat\n"
 "Language-Team: Chinese Hanyu Pinyin\n"
@@ -461,6 +461,10 @@ msgstr "Wúfǎ chóng zhì wèi bootloader, yīnwèi méiyǒu bootloader cúnzà
 msgid "Cannot set value when direction is input."
 msgstr "Dāng fāngxiàng xiàng nèi shí, bùnéng shèzhì gāi zhí."
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Cannot specify RTS or CTS in RS485 mode"
+msgstr ""
+
 #: py/objslice.c
 msgid "Cannot subclass slice"
 msgstr "Wúfǎ zi fēnlèi"
@@ -1188,6 +1192,10 @@ msgstr "RNG qǔxiāo chūshǐhuà cuòwù"
 msgid "RNG Init Error"
 msgstr "RNG chūshǐhuà cuòwù"
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "RS485 inversion specified when not in RS485 mode"
+msgstr ""
+
 #: ports/cxd56/common-hal/rtc/RTC.c ports/mimxrt10xx/common-hal/rtc/RTC.c
 #: ports/nrf/common-hal/rtc/RTC.c
 msgid "RTC calibration is not supported on this board"
@@ -1197,6 +1205,11 @@ msgstr "Cǐ bǎn bù zhīchí RTC jiàozhǔn"
 msgid "RTC is not supported on this board"
 msgstr "Cǐ bǎn bù zhīchí RTC"
 
+#: ports/atmel-samd/common-hal/busio/UART.c ports/cxd56/common-hal/busio/UART.c
+#: ports/nrf/common-hal/busio/UART.c ports/stm32f4/common-hal/busio/UART.c
+msgid "RTS/CTS/RS485 Not yet supported on this device"
+msgstr ""
+
 #: ports/stm32f4/common-hal/os/__init__.c
 msgid "Random number generation error"
 msgstr "Suíjī shù shēngchéng cuòwù"
@@ -1258,6 +1271,14 @@ msgstr "Cǎiyàng lǜ tài gāo. Tā bìxū xiǎoyú %d"
 msgid "Scan already in progess. Stop with stop_scan."
 msgstr "Zhèngzài jìn háng sǎomiáo. Shǐyòng stop_scan tíngzhǐ."
 
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected CTS pin not valid"
+msgstr ""
+
+#: ports/mimxrt10xx/common-hal/busio/UART.c
+msgid "Selected RTS pin not valid"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/audiobusio/I2SOut.c
 #: ports/atmel-samd/common-hal/audiobusio/PDMIn.c
 msgid "Serializer in use"