Merge pull request #2668 from hierophect/stm32-pulseout

STM32: Add PulseOut support

18 files changed, 253 insertions, 45 deletions

diff --git a/locale/ID.po b/locale/ID.po
index 9978600ea..45a310902 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: 2020-03-02 09:12-0600\n"
+"POT-Creation-Date: 2020-03-02 11:20-0500\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"
@@ -914,10 +914,13 @@ msgstr "Pin untuk channel kanan tidak valid"
 #: ports/atmel-samd/common-hal/i2cslave/I2CSlave.c
 #: ports/cxd56/common-hal/busio/I2C.c ports/cxd56/common-hal/busio/SPI.c
 #: ports/cxd56/common-hal/busio/UART.c ports/nrf/common-hal/busio/I2C.c
-#: ports/stm32f4/common-hal/pulseio/PWMOut.c
 msgid "Invalid pins"
 msgstr "Pin-pin tidak valid"
 
+#: ports/stm32f4/common-hal/pulseio/PWMOut.c
+msgid "Invalid pins for PWMOut"
+msgstr ""
+
 #: shared-bindings/bitbangio/SPI.c shared-bindings/busio/SPI.c
 msgid "Invalid polarity"
 msgstr ""
@@ -1189,7 +1192,7 @@ msgid "PulseIn not yet supported"
 msgstr ""
 
 #: ports/stm32f4/common-hal/pulseio/PulseOut.c
-msgid "PulseOut not yet supported"
+msgid "PulseOut not supported on this chip"
 msgstr ""
 
 #: ports/stm32f4/common-hal/os/__init__.c
diff --git a/locale/circuitpython.pot b/locale/circuitpython.pot
index d44fe8d19..4c0dabfb1 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: 2020-03-02 09:12-0600\n"
+"POT-Creation-Date: 2020-03-02 11:20-0500\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"
@@ -903,10 +903,13 @@ msgstr ""
 #: ports/atmel-samd/common-hal/i2cslave/I2CSlave.c
 #: ports/cxd56/common-hal/busio/I2C.c ports/cxd56/common-hal/busio/SPI.c
 #: ports/cxd56/common-hal/busio/UART.c ports/nrf/common-hal/busio/I2C.c
-#: ports/stm32f4/common-hal/pulseio/PWMOut.c
 msgid "Invalid pins"
 msgstr ""
 
+#: ports/stm32f4/common-hal/pulseio/PWMOut.c
+msgid "Invalid pins for PWMOut"
+msgstr ""
+
 #: shared-bindings/bitbangio/SPI.c shared-bindings/busio/SPI.c
 msgid "Invalid polarity"
 msgstr ""
@@ -1175,7 +1178,7 @@ msgid "PulseIn not yet supported"
 msgstr ""
 
 #: ports/stm32f4/common-hal/pulseio/PulseOut.c
-msgid "PulseOut not yet supported"
+msgid "PulseOut not supported on this chip"
 msgstr ""
 
 #: ports/stm32f4/common-hal/os/__init__.c
diff --git a/locale/de_DE.po b/locale/de_DE.po
index 0d85f1931..35529b768 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: 2020-03-02 09:12-0600\n"
+"POT-Creation-Date: 2020-03-02 11:20-0500\n"
 "PO-Revision-Date: 2018-07-27 11:55-0700\n"
 "Last-Translator: Pascal Deneaux\n"
 "Language-Team: Sebastian Plamauer, Pascal Deneaux\n"
@@ -911,10 +911,13 @@ msgstr "Ungültiger Pin für rechten Kanal"
 #: ports/atmel-samd/common-hal/i2cslave/I2CSlave.c
 #: ports/cxd56/common-hal/busio/I2C.c ports/cxd56/common-hal/busio/SPI.c
 #: ports/cxd56/common-hal/busio/UART.c ports/nrf/common-hal/busio/I2C.c
-#: ports/stm32f4/common-hal/pulseio/PWMOut.c
 msgid "Invalid pins"
 msgstr "Ungültige Pins"
 
+#: ports/stm32f4/common-hal/pulseio/PWMOut.c
+msgid "Invalid pins for PWMOut"
+msgstr ""
+
 #: shared-bindings/bitbangio/SPI.c shared-bindings/busio/SPI.c
 msgid "Invalid polarity"
 msgstr "Ungültige Polarität"
@@ -1192,7 +1195,7 @@ msgid "PulseIn not yet supported"
 msgstr ""
 
 #: ports/stm32f4/common-hal/pulseio/PulseOut.c
-msgid "PulseOut not yet supported"
+msgid "PulseOut not supported on this chip"
 msgstr ""
 
 #: ports/stm32f4/common-hal/os/__init__.c
diff --git a/locale/en_US.po b/locale/en_US.po
index bd21a7e0f..c422703c4 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: 2020-03-02 09:12-0600\n"
+"POT-Creation-Date: 2020-03-02 11:20-0500\n"
 "PO-Revision-Date: 2018-07-27 11:55-0700\n"
 "Last-Translator: \n"
 "Language-Team: \n"
@@ -903,10 +903,13 @@ msgstr ""
 #: ports/atmel-samd/common-hal/i2cslave/I2CSlave.c
 #: ports/cxd56/common-hal/busio/I2C.c ports/cxd56/common-hal/busio/SPI.c
 #: ports/cxd56/common-hal/busio/UART.c ports/nrf/common-hal/busio/I2C.c
-#: ports/stm32f4/common-hal/pulseio/PWMOut.c
 msgid "Invalid pins"
 msgstr ""
 
+#: ports/stm32f4/common-hal/pulseio/PWMOut.c
+msgid "Invalid pins for PWMOut"
+msgstr ""
+
 #: shared-bindings/bitbangio/SPI.c shared-bindings/busio/SPI.c
 msgid "Invalid polarity"
 msgstr ""
@@ -1175,7 +1178,7 @@ msgid "PulseIn not yet supported"
 msgstr ""
 
 #: ports/stm32f4/common-hal/pulseio/PulseOut.c
-msgid "PulseOut not yet supported"
+msgid "PulseOut not supported on this chip"
 msgstr ""
 
 #: ports/stm32f4/common-hal/os/__init__.c
diff --git a/locale/en_x_pirate.po b/locale/en_x_pirate.po
index e6b3d36ca..1f897f0ce 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: 2020-03-02 09:12-0600\n"
+"POT-Creation-Date: 2020-03-02 11:20-0500\n"
 "PO-Revision-Date: 2018-07-27 11:55-0700\n"
 "Last-Translator: \n"
 "Language-Team: @sommersoft, @MrCertainly\n"
@@ -907,10 +907,13 @@ msgstr "Belay that! Invalid pin for starboard-side channel"
 #: ports/atmel-samd/common-hal/i2cslave/I2CSlave.c
 #: ports/cxd56/common-hal/busio/I2C.c ports/cxd56/common-hal/busio/SPI.c
 #: ports/cxd56/common-hal/busio/UART.c ports/nrf/common-hal/busio/I2C.c
-#: ports/stm32f4/common-hal/pulseio/PWMOut.c
 msgid "Invalid pins"
 msgstr ""
 
+#: ports/stm32f4/common-hal/pulseio/PWMOut.c
+msgid "Invalid pins for PWMOut"
+msgstr ""
+
 #: shared-bindings/bitbangio/SPI.c shared-bindings/busio/SPI.c
 msgid "Invalid polarity"
 msgstr ""
@@ -1179,7 +1182,7 @@ msgid "PulseIn not yet supported"
 msgstr ""
 
 #: ports/stm32f4/common-hal/pulseio/PulseOut.c
-msgid "PulseOut not yet supported"
+msgid "PulseOut not supported on this chip"
 msgstr ""
 
 #: ports/stm32f4/common-hal/os/__init__.c
diff --git a/locale/es.po b/locale/es.po
index 35b8c565f..3fed75dfe 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: 2020-03-02 09:12-0600\n"
+"POT-Creation-Date: 2020-03-02 11:20-0500\n"
 "PO-Revision-Date: 2018-08-24 22:56-0500\n"
 "Last-Translator: \n"
 "Language-Team: \n"
@@ -911,10 +911,13 @@ msgstr "Pin inválido para canal derecho"
 #: ports/atmel-samd/common-hal/i2cslave/I2CSlave.c
 #: ports/cxd56/common-hal/busio/I2C.c ports/cxd56/common-hal/busio/SPI.c
 #: ports/cxd56/common-hal/busio/UART.c ports/nrf/common-hal/busio/I2C.c
-#: ports/stm32f4/common-hal/pulseio/PWMOut.c
 msgid "Invalid pins"
 msgstr "pines inválidos"
 
+#: ports/stm32f4/common-hal/pulseio/PWMOut.c
+msgid "Invalid pins for PWMOut"
+msgstr ""
+
 #: shared-bindings/bitbangio/SPI.c shared-bindings/busio/SPI.c
 msgid "Invalid polarity"
 msgstr "Polaridad inválida"
@@ -1191,7 +1194,7 @@ msgid "PulseIn not yet supported"
 msgstr ""
 
 #: ports/stm32f4/common-hal/pulseio/PulseOut.c
-msgid "PulseOut not yet supported"
+msgid "PulseOut not supported on this chip"
 msgstr ""
 
 #: ports/stm32f4/common-hal/os/__init__.c
diff --git a/locale/fil.po b/locale/fil.po
index ec1a88d82..be1158ec6 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: 2020-03-02 09:12-0600\n"
+"POT-Creation-Date: 2020-03-02 11:20-0500\n"
 "PO-Revision-Date: 2018-12-20 22:15-0800\n"
 "Last-Translator: Timothy <me@timothygarcia.ca>\n"
 "Language-Team: fil\n"
@@ -919,10 +919,13 @@ msgstr "Mali ang pin para sa kanang channel"
 #: ports/atmel-samd/common-hal/i2cslave/I2CSlave.c
 #: ports/cxd56/common-hal/busio/I2C.c ports/cxd56/common-hal/busio/SPI.c
 #: ports/cxd56/common-hal/busio/UART.c ports/nrf/common-hal/busio/I2C.c
-#: ports/stm32f4/common-hal/pulseio/PWMOut.c
 msgid "Invalid pins"
 msgstr "Mali ang pins"
 
+#: ports/stm32f4/common-hal/pulseio/PWMOut.c
+msgid "Invalid pins for PWMOut"
+msgstr ""
+
 #: shared-bindings/bitbangio/SPI.c shared-bindings/busio/SPI.c
 msgid "Invalid polarity"
 msgstr "Mali ang polarity"
@@ -1197,7 +1200,7 @@ msgid "PulseIn not yet supported"
 msgstr ""
 
 #: ports/stm32f4/common-hal/pulseio/PulseOut.c
-msgid "PulseOut not yet supported"
+msgid "PulseOut not supported on this chip"
 msgstr ""
 
 #: ports/stm32f4/common-hal/os/__init__.c
diff --git a/locale/fr.po b/locale/fr.po
index a79d8444b..e06d6336d 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: 2020-03-02 09:12-0600\n"
+"POT-Creation-Date: 2020-03-02 11:20-0500\n"
 "PO-Revision-Date: 2019-04-14 20:05+0100\n"
 "Last-Translator: Pierrick Couturier <arofarn@arofarn.info>\n"
 "Language-Team: fr\n"
@@ -925,10 +925,13 @@ msgstr "Broche invalide pour le canal droit"
 #: ports/atmel-samd/common-hal/i2cslave/I2CSlave.c
 #: ports/cxd56/common-hal/busio/I2C.c ports/cxd56/common-hal/busio/SPI.c
 #: ports/cxd56/common-hal/busio/UART.c ports/nrf/common-hal/busio/I2C.c
-#: ports/stm32f4/common-hal/pulseio/PWMOut.c
 msgid "Invalid pins"
 msgstr "Broches invalides"
 
+#: ports/stm32f4/common-hal/pulseio/PWMOut.c
+msgid "Invalid pins for PWMOut"
+msgstr ""
+
 #: shared-bindings/bitbangio/SPI.c shared-bindings/busio/SPI.c
 msgid "Invalid polarity"
 msgstr "Polarité invalide"
@@ -1210,7 +1213,7 @@ msgid "PulseIn not yet supported"
 msgstr ""
 
 #: ports/stm32f4/common-hal/pulseio/PulseOut.c
-msgid "PulseOut not yet supported"
+msgid "PulseOut not supported on this chip"
 msgstr ""
 
 #: ports/stm32f4/common-hal/os/__init__.c
diff --git a/locale/it_IT.po b/locale/it_IT.po
index 172f00878..a43e4e247 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: 2020-03-02 09:12-0600\n"
+"POT-Creation-Date: 2020-03-02 11:20-0500\n"
 "PO-Revision-Date: 2018-10-02 16:27+0200\n"
 "Last-Translator: Enrico Paganin <enrico.paganin@mail.com>\n"
 "Language-Team: \n"
@@ -921,10 +921,13 @@ msgstr "Pin non valido per il canale destro"
 #: ports/atmel-samd/common-hal/i2cslave/I2CSlave.c
 #: ports/cxd56/common-hal/busio/I2C.c ports/cxd56/common-hal/busio/SPI.c
 #: ports/cxd56/common-hal/busio/UART.c ports/nrf/common-hal/busio/I2C.c
-#: ports/stm32f4/common-hal/pulseio/PWMOut.c
 msgid "Invalid pins"
 msgstr "Pin non validi"
 
+#: ports/stm32f4/common-hal/pulseio/PWMOut.c
+msgid "Invalid pins for PWMOut"
+msgstr ""
+
 #: shared-bindings/bitbangio/SPI.c shared-bindings/busio/SPI.c
 msgid "Invalid polarity"
 msgstr "Polarità non valida"
@@ -1206,7 +1209,7 @@ msgid "PulseIn not yet supported"
 msgstr ""
 
 #: ports/stm32f4/common-hal/pulseio/PulseOut.c
-msgid "PulseOut not yet supported"
+msgid "PulseOut not supported on this chip"
 msgstr ""
 
 #: ports/stm32f4/common-hal/os/__init__.c
diff --git a/locale/ko.po b/locale/ko.po
index 81dcd8809..2b2a401aa 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: 2020-03-02 09:12-0600\n"
+"POT-Creation-Date: 2020-03-02 11:20-0500\n"
 "PO-Revision-Date: 2019-05-06 14:22-0700\n"
 "Last-Translator: \n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -907,10 +907,13 @@ msgstr "오른쪽 채널 핀이 잘못되었습니다"
 #: ports/atmel-samd/common-hal/i2cslave/I2CSlave.c
 #: ports/cxd56/common-hal/busio/I2C.c ports/cxd56/common-hal/busio/SPI.c
 #: ports/cxd56/common-hal/busio/UART.c ports/nrf/common-hal/busio/I2C.c
-#: ports/stm32f4/common-hal/pulseio/PWMOut.c
 msgid "Invalid pins"
 msgstr "핀이 유효하지 않습니다"
 
+#: ports/stm32f4/common-hal/pulseio/PWMOut.c
+msgid "Invalid pins for PWMOut"
+msgstr ""
+
 #: shared-bindings/bitbangio/SPI.c shared-bindings/busio/SPI.c
 msgid "Invalid polarity"
 msgstr ""
@@ -1179,7 +1182,7 @@ msgid "PulseIn not yet supported"
 msgstr ""
 
 #: ports/stm32f4/common-hal/pulseio/PulseOut.c
-msgid "PulseOut not yet supported"
+msgid "PulseOut not supported on this chip"
 msgstr ""
 
 #: ports/stm32f4/common-hal/os/__init__.c
diff --git a/locale/pl.po b/locale/pl.po
index 764c75881..f6863ca59 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: 2020-03-02 09:12-0600\n"
+"POT-Creation-Date: 2020-03-02 11:20-0500\n"
 "PO-Revision-Date: 2019-03-19 18:37-0700\n"
 "Last-Translator: Radomir Dopieralski <circuitpython@sheep.art.pl>\n"
 "Language-Team: pl\n"
@@ -908,10 +908,13 @@ msgstr "Zła nóżka dla prawego kanału"
 #: ports/atmel-samd/common-hal/i2cslave/I2CSlave.c
 #: ports/cxd56/common-hal/busio/I2C.c ports/cxd56/common-hal/busio/SPI.c
 #: ports/cxd56/common-hal/busio/UART.c ports/nrf/common-hal/busio/I2C.c
-#: ports/stm32f4/common-hal/pulseio/PWMOut.c
 msgid "Invalid pins"
 msgstr "Złe nóżki"
 
+#: ports/stm32f4/common-hal/pulseio/PWMOut.c
+msgid "Invalid pins for PWMOut"
+msgstr ""
+
 #: shared-bindings/bitbangio/SPI.c shared-bindings/busio/SPI.c
 msgid "Invalid polarity"
 msgstr "Zła polaryzacja"
@@ -1180,7 +1183,7 @@ msgid "PulseIn not yet supported"
 msgstr ""
 
 #: ports/stm32f4/common-hal/pulseio/PulseOut.c
-msgid "PulseOut not yet supported"
+msgid "PulseOut not supported on this chip"
 msgstr ""
 
 #: ports/stm32f4/common-hal/os/__init__.c
diff --git a/locale/pt_BR.po b/locale/pt_BR.po
index 81a7974f3..371a6bcf6 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: 2020-03-02 09:12-0600\n"
+"POT-Creation-Date: 2020-03-02 11:20-0500\n"
 "PO-Revision-Date: 2018-10-02 21:14-0000\n"
 "Last-Translator: \n"
 "Language-Team: \n"
@@ -914,10 +914,13 @@ msgstr "Pino inválido para canal direito"
 #: ports/atmel-samd/common-hal/i2cslave/I2CSlave.c
 #: ports/cxd56/common-hal/busio/I2C.c ports/cxd56/common-hal/busio/SPI.c
 #: ports/cxd56/common-hal/busio/UART.c ports/nrf/common-hal/busio/I2C.c
-#: ports/stm32f4/common-hal/pulseio/PWMOut.c
 msgid "Invalid pins"
 msgstr "Pinos inválidos"
 
+#: ports/stm32f4/common-hal/pulseio/PWMOut.c
+msgid "Invalid pins for PWMOut"
+msgstr ""
+
 #: shared-bindings/bitbangio/SPI.c shared-bindings/busio/SPI.c
 msgid "Invalid polarity"
 msgstr ""
@@ -1191,7 +1194,7 @@ msgid "PulseIn not yet supported"
 msgstr ""
 
 #: ports/stm32f4/common-hal/pulseio/PulseOut.c
-msgid "PulseOut not yet supported"
+msgid "PulseOut not supported on this chip"
 msgstr ""
 
 #: ports/stm32f4/common-hal/os/__init__.c
diff --git a/locale/zh_Latn_pinyin.po b/locale/zh_Latn_pinyin.po
index d650ac52a..682d6c0e3 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: 2020-03-02 09:12-0600\n"
+"POT-Creation-Date: 2020-03-02 11:20-0500\n"
 "PO-Revision-Date: 2019-04-13 10:10-0700\n"
 "Last-Translator: hexthat\n"
 "Language-Team: Chinese Hanyu Pinyin\n"
@@ -916,10 +916,13 @@ msgstr "Yòuxián tōngdào yǐn jiǎo wúxiào"
 #: ports/atmel-samd/common-hal/i2cslave/I2CSlave.c
 #: ports/cxd56/common-hal/busio/I2C.c ports/cxd56/common-hal/busio/SPI.c
 #: ports/cxd56/common-hal/busio/UART.c ports/nrf/common-hal/busio/I2C.c
-#: ports/stm32f4/common-hal/pulseio/PWMOut.c
 msgid "Invalid pins"
 msgstr "Wúxiào de yǐn jiǎo"
 
+#: ports/stm32f4/common-hal/pulseio/PWMOut.c
+msgid "Invalid pins for PWMOut"
+msgstr ""
+
 #: shared-bindings/bitbangio/SPI.c shared-bindings/busio/SPI.c
 msgid "Invalid polarity"
 msgstr "Wúxiào liǎng jí zhí"
@@ -1194,8 +1197,8 @@ msgid "PulseIn not yet supported"
 msgstr "Shàng bù zhīchí PulseIn"
 
 #: ports/stm32f4/common-hal/pulseio/PulseOut.c
-msgid "PulseOut not yet supported"
-msgstr "Shàng bù zhīchí PulseOut"
+msgid "PulseOut not supported on this chip"
+msgstr ""
 
 #: ports/stm32f4/common-hal/os/__init__.c
 msgid "RNG DeInit Error"
@@ -3294,6 +3297,9 @@ msgstr "líng bù"
 #~ msgid "Pixel beyond bounds of buffer"
 #~ msgstr "Xiàngsù chāochū huǎnchōng qū biānjiè"
 
+#~ msgid "PulseOut not yet supported"
+#~ msgstr "Shàng bù zhīchí PulseOut"
+
 #~ msgid "Range out of bounds"
 #~ msgstr "Fànwéi chāochū biānjiè"
 
diff --git a/ports/stm32f4/common-hal/pulseio/PWMOut.c b/ports/stm32f4/common-hal/pulseio/PWMOut.c
index 50bacbb51..4bb3afae4 100644
--- a/ports/stm32f4/common-hal/pulseio/PWMOut.c
+++ b/ports/stm32f4/common-hal/pulseio/PWMOut.c
@@ -163,7 +163,7 @@ pwmout_result_t common_hal_pulseio_pwmout_construct(pulseio_pwmout_obj_t* self,
         } else if (var_freq_mismatch) {
             mp_raise_ValueError(translate("Cannot vary frequency on a timer that is already in use"));
         } else {
-            mp_raise_ValueError(translate("Invalid pins"));
+            mp_raise_ValueError(translate("Invalid pins for PWMOut"));
         }
     }
 
diff --git a/ports/stm32f4/common-hal/pulseio/PulseOut.c b/ports/stm32f4/common-hal/pulseio/PulseOut.c
index d393afc5c..d82525ea1 100644
--- a/ports/stm32f4/common-hal/pulseio/PulseOut.c
+++ b/ports/stm32f4/common-hal/pulseio/PulseOut.c
@@ -35,21 +35,180 @@
 #include "shared-bindings/pulseio/PWMOut.h"
 #include "supervisor/shared/translate.h"
 
+#include "stm32f4xx_hal.h"
+#include "common-hal/microcontroller/Pin.h"
+#include "tick.h"
+
+// A single timer is shared amongst all PulseOut objects under the assumption that
+// the code is single threaded.
+STATIC uint8_t refcount = 0;
+
+STATIC uint16_t *pulse_array = NULL;
+STATIC volatile uint16_t pulse_array_index = 0;
+STATIC uint16_t pulse_array_length;
+
+//Timer is shared, must be accessible by interrupt
+STATIC TIM_HandleTypeDef t7_handle;
+pulseio_pulseout_obj_t *curr_pulseout = NULL;
+
+STATIC void turn_on(pulseio_pulseout_obj_t *pulseout) {
+    // Turn on PWM
+    HAL_TIM_PWM_Start(&(pulseout->pwmout->handle), pulseout->pwmout->channel);
+}
+
+STATIC void turn_off(pulseio_pulseout_obj_t *pulseout) {
+    // Turn off PWM
+    HAL_TIM_PWM_Stop(&(pulseout->pwmout->handle), pulseout->pwmout->channel);
+    // Make sure pin is low.
+    HAL_GPIO_WritePin(pin_port(pulseout->pwmout->tim->pin->port), 
+                      pin_mask(pulseout->pwmout->tim->pin->number), 0);
+}
+
+STATIC void start_timer(void) {
+    // Set the new period
+    t7_handle.Init.Period = pulse_array[pulse_array_index] - 1;
+    HAL_TIM_Base_Init(&t7_handle);
+
+    // TIM7 has limited HAL support, set registers manually
+    t7_handle.Instance->SR = 0; // Prevent the SR from triggering an interrupt
+    t7_handle.Instance->CR1 |= TIM_CR1_CEN; // Resume timer
+    t7_handle.Instance->CR1 |= TIM_CR1_URS; // Disable non-overflow interrupts
+    __HAL_TIM_ENABLE_IT(&t7_handle, TIM_IT_UPDATE);
+
+}
+
+STATIC void pulseout_event_handler(void) {
+    if (curr_pulseout->pwmout == NULL) {
+        return; //invalid interrupt
+    }
+
+    HAL_GPIO_WritePin(pin_port(2),pin_mask(6), 1);
+    HAL_GPIO_WritePin(pin_port(2),pin_mask(6), 0);
+
+    pulse_array_index++;
+
+    // No more pulses. Turn off output and don't restart.
+    if (pulse_array_index >= pulse_array_length) {
+        turn_off(curr_pulseout);
+        return;
+    }
+
+    // Alternate on and off, starting with on.
+    if (pulse_array_index % 2 == 0) {
+        turn_on(curr_pulseout);
+    } else {
+        turn_off(curr_pulseout);
+    }
+
+    // Count up to the next given value.
+    start_timer();
+}
 
 void pulseout_reset() {
+    #if HAS_BASIC_TIM
+    __HAL_RCC_TIM7_CLK_DISABLE();
+    refcount = 0;
+    #endif
 }
 
 void common_hal_pulseio_pulseout_construct(pulseio_pulseout_obj_t* self,
                                            const pulseio_pwmout_obj_t* carrier) {
-    mp_raise_NotImplementedError(translate("PulseOut not yet supported"));
+#if !(HAS_BASIC_TIM)
+    mp_raise_NotImplementedError(translate("PulseOut not supported on this chip"));
+#else
+    // Add to active PulseOuts
+    refcount++;
+
+    // Calculate a 1 ms period
+    uint32_t source, clk_div;
+    source = HAL_RCC_GetPCLK1Freq(); // TIM7 is on APB1
+    clk_div = RCC->CFGR & RCC_CFGR_PPRE1;
+    // APB quirk, see See DM00031020 Rev 4, page 115.
+    if (clk_div != 0) {
+        // APB prescaler for this timer is > 1
+        source *= 2;
+    }
+
+    uint32_t prescaler = source/1000000; //1us intervals
+
+    __HAL_RCC_TIM7_CLK_ENABLE();
+    HAL_NVIC_SetPriority(TIM7_IRQn, 4, 0);
+    HAL_NVIC_EnableIRQ(TIM7_IRQn);
+
+    // Timers 6 and 7 have no pins, so using them doesn't affect PWM availability
+    t7_handle.Instance = TIM7;
+    t7_handle.Init.Period = 100; //immediately replaced.
+    t7_handle.Init.Prescaler = prescaler - 1;
+    t7_handle.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
+    t7_handle.Init.CounterMode = TIM_COUNTERMODE_UP;
+    t7_handle.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
+
+    HAL_TIM_Base_Init(&t7_handle);
+    t7_handle.Instance->SR = 0;
+
+    // The HAL can't work with const, recast required.
+    self->pwmout = (pulseio_pwmout_obj_t*)carrier;
+
+    turn_off(self);
+#endif
 }
 
 bool common_hal_pulseio_pulseout_deinited(pulseio_pulseout_obj_t* self) {
-    return true;
+    return self->pwmout == NULL;
 }
 
 void common_hal_pulseio_pulseout_deinit(pulseio_pulseout_obj_t* self) {
+    if (common_hal_pulseio_pulseout_deinited(self)) {
+        return;
+    }
+    turn_on(self);
+    self->pwmout = NULL;
+
+    refcount--;
+    if (refcount == 0) {
+        #if HAS_BASIC_TIM
+        __HAL_RCC_TIM7_CLK_DISABLE();
+        #endif
+    }
 }
 
 void common_hal_pulseio_pulseout_send(pulseio_pulseout_obj_t* self, uint16_t* pulses, uint16_t length) {
+    pulse_array = pulses;
+    pulse_array_index = 0;
+    pulse_array_length = length;
+    curr_pulseout = self;
+
+    turn_on(self);
+
+    // Count up to the next given value.
+    start_timer();
+
+    // Use when debugging, or issues are irrecoverable
+    // uint32_t starttime = supervisor_ticks_ms64();
+    // uint32_t timeout = 10000;
+    while(pulse_array_index < length) {
+        // Do other things while we wait. The interrupts will handle sending the
+        // signal.
+        RUN_BACKGROUND_TASKS;
+
+        // Use when debugging, or issues are irrecoverable
+        // if ((supervisor_ticks_ms64() - starttime ) > timeout ) {
+        //    mp_raise_RuntimeError(translate("Error: Send Timeout"));
+        // }
+    }
+    //turn off timer counter. 
+    t7_handle.Instance->CR1 &= ~TIM_CR1_CEN;
+}
+
+void TIM7_IRQHandler(void)
+{
+    // Detect TIM Update event
+    if (__HAL_TIM_GET_FLAG(&t7_handle, TIM_FLAG_UPDATE) != RESET)
+    {
+        if (__HAL_TIM_GET_IT_SOURCE(&t7_handle, TIM_IT_UPDATE) != RESET)
+        {
+            __HAL_TIM_CLEAR_IT(&t7_handle, TIM_IT_UPDATE);
+            pulseout_event_handler();
+        }
+    }
 }
diff --git a/ports/stm32f4/common-hal/pulseio/PulseOut.h b/ports/stm32f4/common-hal/pulseio/PulseOut.h
index 45823d28a..aa97396d0 100644
--- a/ports/stm32f4/common-hal/pulseio/PulseOut.h
+++ b/ports/stm32f4/common-hal/pulseio/PulseOut.h
@@ -34,7 +34,7 @@
 
 typedef struct {
     mp_obj_base_t base;
-    const pulseio_pwmout_obj_t *pwmout;
+    pulseio_pwmout_obj_t *pwmout;
 } pulseio_pulseout_obj_t;
 
 void pulseout_reset(void);
diff --git a/ports/stm32f4/peripherals/stm32f4/periph.h b/ports/stm32f4/peripherals/stm32f4/periph.h
index 969a8e79b..d311afe4a 100644
--- a/ports/stm32f4/peripherals/stm32f4/periph.h
+++ b/ports/stm32f4/peripherals/stm32f4/periph.h
@@ -138,23 +138,26 @@ typedef struct {
     .pin = tim_pin, \
 }
 
-//Starter Lines
+//Access Lines
 
 #ifdef STM32F401xE
 #define HAS_DAC 0
 #define HAS_TRNG 0
+#define HAS_BASIC_TIM 0
 #include "stm32f401xe/periph.h"
 #endif
 
 #ifdef STM32F411xE
 #define HAS_DAC 0
 #define HAS_TRNG 0
+#define HAS_BASIC_TIM 0
 #include "stm32f411xe/periph.h"
 #endif
 
 #ifdef STM32F412Zx
 #define HAS_DAC 0
 #define HAS_TRNG 1
+#define HAS_BASIC_TIM 1
 #include "stm32f412zx/periph.h"
 #endif
 
@@ -163,12 +166,14 @@ typedef struct {
 #ifdef STM32F405xx
 #define HAS_DAC 1
 #define HAS_TRNG 1
+#define HAS_BASIC_TIM 1
 #include "stm32f405xx/periph.h"
 #endif
 
 #ifdef STM32F407xx
 #define HAS_DAC 1
 #define HAS_TRNG 1
+#define HAS_BASIC_TIM 1
 #include "stm32f407xx/periph.h"
 #endif
 
diff --git a/ports/stm32f4/supervisor/port.c b/ports/stm32f4/supervisor/port.c
index e9e4720d7..ecb4d3d15 100644
--- a/ports/stm32f4/supervisor/port.c
+++ b/ports/stm32f4/supervisor/port.c
@@ -35,6 +35,7 @@
 #include "common-hal/busio/SPI.h"
 #include "common-hal/busio/UART.h"
 #include "common-hal/pulseio/PWMOut.h"
+#include "common-hal/pulseio/PulseOut.h"
 
 #include "stm32f4/clocks.h"
 #include "stm32f4/gpio.h"
@@ -60,6 +61,7 @@ void reset_port(void) {
     spi_reset();
     uart_reset();
     pwmout_reset();
+    pulseout_reset();
 }
 
 void reset_to_bootloader(void) {