[stm] implementation of audiopwmio

Based on nrf PWMAudioOut by @jepler and stm PulseOut by @hierophect

Tested on a Meowbit

Author: tyomitch

locale/circuitpython.pot

@@ -411,6 +411,10 @@ msgstr ""
 msgid "AnalogOut not supported on given pin"
 msgstr ""
 
+#: ports/stm/common-hal/audiopwmio/PWMAudioOut.c
+msgid "Another PWMAudioOut is already active"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/pulseio/PulseOut.c
 #: ports/cxd56/common-hal/pulseio/PulseOut.c
 msgid "Another send is already active"
@@ -525,6 +529,7 @@ msgid "Buffer is too small"
 msgstr ""
 
 #: ports/nrf/common-hal/audiopwmio/PWMAudioOut.c
+#: ports/stm/common-hal/audiopwmio/PWMAudioOut.c
 #, c-format
 msgid "Buffer length %d too big. It must be less than %d"
 msgstr ""
@@ -974,6 +979,10 @@ msgstr ""
 msgid "Failed to allocate wifi scan memory"
 msgstr ""
 
+#: ports/stm/common-hal/audiopwmio/PWMAudioOut.c
+msgid "Failed to buffer the sample"
+msgstr ""
+
 #: ports/nrf/common-hal/_bleio/Adapter.c
 msgid "Failed to connect: internal error"
 msgstr ""

ports/stm/boards/espruino_pico/mpconfigboard.mk

@@ -20,6 +20,8 @@ LD_FILE = boards/STM32F401xd_fs.ld
 # lto for this port, and if other stuff hasn't been added in the
 # meantime
 CIRCUITPY_ULAB = 0
+CIRCUITPY_AUDIOCORE = 0
+CIRCUITPY_AUDIOPWMIO = 0
 CIRCUITPY_BUSDEVICE = 0
 CIRCUITPY_BITMAPTOOLS = 0
 CIRCUITPY_FRAMEBUFFERIO = 0

ports/stm/boards/espruino_wifi/mpconfigboard.mk

@@ -11,3 +11,7 @@ MCU_PACKAGE = UFQFPN48
 
 LD_COMMON = boards/common_default.ld
 LD_FILE = boards/STM32F411_fs.ld
+
+# Too big for the flash
+CIRCUITPY_AUDIOCORE = 0
+CIRCUITPY_AUDIOPWMIO = 0

ports/stm/boards/pyb_nano_v2/mpconfigboard.mk

@@ -12,3 +12,7 @@ MCU_PACKAGE = UFQFPN48
 
 LD_COMMON = boards/common_default.ld
 LD_FILE = boards/STM32F411_fs.ld
+
+# Too big for the flash
+CIRCUITPY_AUDIOCORE = 0
+CIRCUITPY_AUDIOPWMIO = 0

ports/stm/boards/stm32f411ce_blackpill/mpconfigboard.mk

@@ -15,3 +15,7 @@ MCU_PACKAGE = UFQFPN48
 
 LD_COMMON = boards/common_default.ld
 LD_FILE = boards/STM32F411_fs.ld
+
+# Too big for the flash
+CIRCUITPY_AUDIOCORE = 0
+CIRCUITPY_AUDIOPWMIO = 0

ports/stm/boards/stm32f411ve_discovery/mpconfigboard.mk

@@ -11,3 +11,7 @@ MCU_PACKAGE = LQFP100_f4
 
 LD_COMMON = boards/common_default.ld
 LD_FILE = boards/STM32F411_fs.ld
+
+# Too big for the flash
+CIRCUITPY_AUDIOCORE = 0
+CIRCUITPY_AUDIOPWMIO = 0