STM32: Alarms and sleep

locale/circuitpython.pot

@@ -846,6 +846,10 @@ msgstr ""
 msgid "Data too large for advertisement packet"
 msgstr ""
 
+#: ports/stm/common-hal/alarm/pin/PinAlarm.c
+msgid "Deep sleep pins must use a rising edge with pulldown"
+msgstr ""
+
 #: shared-bindings/audiobusio/PDMIn.c
 msgid "Destination capacity is smaller than destination_length."
 msgstr ""
@@ -1670,6 +1674,10 @@ msgid ""
 "Only Windows format, uncompressed BMP supported: given header size is %d"
 msgstr ""
 
+#: ports/stm/common-hal/alarm/pin/PinAlarm.c
+msgid "Only edge detection is available on this hardware"
+msgstr ""
+
 #: shared-module/displayio/OnDiskBitmap.c
 #, c-format
 msgid ""
@@ -1683,6 +1691,7 @@ msgstr ""
 
 #: ports/esp32s2/common-hal/alarm/time/TimeAlarm.c
 #: ports/nrf/common-hal/alarm/time/TimeAlarm.c
+#: ports/stm/common-hal/alarm/time/TimeAlarm.c
 msgid "Only one alarm.time alarm can be set."
 msgstr ""
 
@@ -1758,6 +1767,10 @@ msgstr ""
 msgid "Permission denied"
 msgstr ""
 
+#: ports/stm/common-hal/alarm/pin/PinAlarm.c
+msgid "Pin cannot wake from Deep Sleep"
+msgstr ""
+
 #: ports/raspberrypi/bindings/rp2pio/StateMachine.c
 msgid "Pin count must be at least 1"
 msgstr ""
@@ -1776,6 +1789,11 @@ msgstr ""
 msgid "Pin does not have ADC capabilities"
 msgstr ""
 
+#: ports/stm/common-hal/alarm/pin/PinAlarm.c
+#: ports/stm/common-hal/pulseio/PulseIn.c
+msgid "Pin interrupt already in use"
+msgstr ""
+
 #: shared-bindings/adafruit_bus_device/SPIDevice.c
 #: shared-bindings/digitalio/DigitalInOut.c
 msgid "Pin is input only"
@@ -1789,10 +1807,6 @@ msgstr ""
 msgid "Pin must support hardware interrupts"
 msgstr ""
 
-#: ports/stm/common-hal/pulseio/PulseIn.c
-msgid "Pin number already reserved by EXTI"
-msgstr ""
-
 #: shared-bindings/rgbmatrix/RGBMatrix.c
 #, c-format
 msgid ""
@@ -2013,6 +2027,10 @@ msgstr ""
 msgid "Size not supported"
 msgstr ""
 
+#: ports/stm/common-hal/alarm/SleepMemory.c
+msgid "Sleep Memory not available"
+msgstr ""
+
 #: shared-bindings/alarm/SleepMemory.c shared-bindings/nvm/ByteArray.c
 msgid "Slice and value different lengths."
 msgstr ""
@@ -2153,6 +2171,10 @@ msgstr ""
 msgid "Total data to write is larger than %q"
 msgstr ""
 
+#: ports/stm/common-hal/alarm/touch/TouchAlarm.c
+msgid "Touch alarms not available"
+msgstr ""
+
 #: py/obj.c
 msgid "Traceback (most recent call last):\n"
 msgstr ""

main.c

@@ -297,13 +297,17 @@ STATIC bool run_code_py(safe_mode_t safe_mode) {
         stack_resize();
         filesystem_flush();
         supervisor_allocation* heap = allocate_remaining_memory();
+
+        // Prepare the VM state. Includes an alarm check/reset for sleep.
         start_mp(heap);
 
         #if CIRCUITPY_USB
         usb_setup_with_vm();
         #endif
 
+        // This is where the user's python code is actually executed:
         found_main = maybe_run_list(supported_filenames, &result);
+        // If that didn't work, double check the extensions
         #if CIRCUITPY_FULL_BUILD
         if (!found_main){
             found_main = maybe_run_list(double_extension_filenames, &result);
@@ -313,6 +317,7 @@ STATIC bool run_code_py(safe_mode_t safe_mode) {
         }
         #endif
 
+        // Finished executing python code. Cleanup includes a board reset.
         cleanup_after_vm(heap);
 
         if (result.return_code & PYEXEC_FORCED_EXIT) {

ports/esp32s2/common-hal/alarm/__init__.c

@@ -79,6 +79,8 @@ bool common_hal_alarm_woken_from_sleep(void) {
     return _get_wakeup_cause() != ESP_SLEEP_WAKEUP_UNDEFINED;
 }
 
+// When called to populate the global dict, the module functions create new alarm objects.
+// Otherwise, they scan the existing alarms for matches.
 STATIC mp_obj_t _get_wake_alarm(size_t n_alarms, const mp_obj_t *alarms) {
     esp_sleep_wakeup_cause_t cause = _get_wakeup_cause();
     switch (cause) {
@@ -104,6 +106,8 @@ STATIC mp_obj_t _get_wake_alarm(size_t n_alarms, const mp_obj_t *alarms) {
     return mp_const_none;
 }
 
+// This function is used to create a new alarm object for the global dict after deep sleep,
+// rather than finding an existing one during runtime.
 mp_obj_t common_hal_alarm_get_wake_alarm(void) {
     return _get_wake_alarm(0, NULL);
 }
@@ -121,6 +125,7 @@ STATIC void _idle_until_alarm(void) {
         RUN_BACKGROUND_TASKS;
         // Allow ctrl-C interrupt.
         if (common_hal_alarm_woken_from_sleep()) {
+            // This saves the return of common_hal_alarm_get_wake_alarm through Shared Bindings
             shared_alarm_save_wake_alarm();
             return;
         }

ports/esp32s2/common-hal/alarm/pin/PinAlarm.c

@@ -38,7 +38,7 @@
 #include "components/soc/src/esp32s2/include/hal/gpio_ll.h"
 #include "components/xtensa/include/esp_debug_helpers.h"
 
-void common_hal_alarm_pin_pinalarm_construct(alarm_pin_pinalarm_obj_t *self, mcu_pin_obj_t *pin, bool value, bool edge, bool pull) {
+void common_hal_alarm_pin_pinalarm_construct(alarm_pin_pinalarm_obj_t *self, const mcu_pin_obj_t *pin, bool value, bool edge, bool pull) {
     if (edge) {
         mp_raise_ValueError(translate("Cannot wake on pin edge. Only level."));
     }
@@ -51,7 +51,7 @@ void common_hal_alarm_pin_pinalarm_construct(alarm_pin_pinalarm_obj_t *self, mcu
     self->pull = pull;
 }
 
-mcu_pin_obj_t *common_hal_alarm_pin_pinalarm_get_pin(alarm_pin_pinalarm_obj_t *self) {
+const mcu_pin_obj_t *common_hal_alarm_pin_pinalarm_get_pin(alarm_pin_pinalarm_obj_t *self) {
     return self->pin;
 }
 
@@ -101,7 +101,7 @@ bool alarm_pin_pinalarm_woke_us_up(void) {
 }
 
 mp_obj_t alarm_pin_pinalarm_get_wakeup_alarm(size_t n_alarms, const mp_obj_t *alarms) {
-    // First, check to see if we match any given alarms.
+    // For light sleep, we check if we match any existing alarms
     uint64_t pin_status = ((uint64_t)pin_63_32_status) << 32 | pin_31_0_status;
     for (size_t i = 0; i < n_alarms; i++) {
         if (!mp_obj_is_type(alarms[i], &alarm_pin_pinalarm_type)) {
@@ -112,6 +112,7 @@ mp_obj_t alarm_pin_pinalarm_get_wakeup_alarm(size_t n_alarms, const mp_obj_t *al
             return alarms[i];
         }
     }
+    // For deep sleep, a new alarm must be created
     esp_sleep_wakeup_cause_t cause = esp_sleep_get_wakeup_cause();
     size_t pin_number = 64;
     if (cause == ESP_SLEEP_WAKEUP_EXT0) {

ports/esp32s2/common-hal/alarm/pin/PinAlarm.h

@@ -29,7 +29,7 @@
 
 typedef struct {
     mp_obj_base_t base;
-    mcu_pin_obj_t *pin;
+    const mcu_pin_obj_t *pin;
     bool value;
     bool pull;
 } alarm_pin_pinalarm_obj_t;

ports/nrf/common-hal/alarm/pin/PinAlarm.c

@@ -50,7 +50,7 @@ static bool pins_configured = false;
 extern uint32_t reset_reason_saved;
 extern void dbg_dump_GPIOregs(void);
 
-void common_hal_alarm_pin_pinalarm_construct(alarm_pin_pinalarm_obj_t *self, mcu_pin_obj_t *pin, bool value, bool edge, bool pull) {
+void common_hal_alarm_pin_pinalarm_construct(alarm_pin_pinalarm_obj_t *self, const mcu_pin_obj_t *pin, bool value, bool edge, bool pull) {
     if (edge) {
         mp_raise_ValueError(translate("Cannot wake on pin edge. Only level."));
     }
@@ -62,7 +62,7 @@ void common_hal_alarm_pin_pinalarm_construct(alarm_pin_pinalarm_obj_t *self, mcu
     self->pull = pull;
 }
 
-mcu_pin_obj_t *common_hal_alarm_pin_pinalarm_get_pin(alarm_pin_pinalarm_obj_t *self) {
+const mcu_pin_obj_t *common_hal_alarm_pin_pinalarm_get_pin(alarm_pin_pinalarm_obj_t *self) {
     return self->pin;
 }
 

ports/nrf/common-hal/alarm/pin/PinAlarm.h

@@ -29,7 +29,7 @@
 
 typedef struct {
     mp_obj_base_t base;
-    mcu_pin_obj_t *pin;
+    const mcu_pin_obj_t *pin;
     bool value;
     bool pull;
 } alarm_pin_pinalarm_obj_t;

ports/stm/Makefile

@@ -220,6 +220,8 @@ SRC_C += \
 	boards/$(BOARD)/board.c \
 	boards/$(BOARD)/pins.c \
 	peripherals/timers.c \
+	peripherals/exti.c \
+	peripherals/rtc.c \
 	peripherals/stm32$(MCU_SERIES_LOWER)/clocks.c \
 	peripherals/stm32$(MCU_SERIES_LOWER)/$(MCU_VARIANT_LOWER)/pins.c \
 	peripherals/stm32$(MCU_SERIES_LOWER)/$(MCU_VARIANT_LOWER)/gpio.c \

ports/stm/boards/stm32f411ce_blackpill_with_flash/mpconfigboard.mk

@@ -17,5 +17,9 @@ MCU_PACKAGE = UFQFPN48
 LD_COMMON = boards/common_default.ld
 LD_FILE = boards/STM32F411_nvm_nofs.ld
 
+# Too big for the flash
+CIRCUITPY_AUDIOCORE = 0
+CIRCUITPY_AUDIOPWMIO = 0
+CIRCUITPY_SYNTHIO = 0
 CIRCUITPY_BITMAPTOOLS = 0
 CIRCUITPY_VECTORIO = 0

ports/stm/common-hal/alarm/SleepMemory.c

@@ -0,0 +1,49 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2021 Lucian Copeland for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <string.h>
+
+#include "py/runtime.h"
+#include "common-hal/alarm/SleepMemory.h"
+
+void alarm_sleep_memory_reset(void) {
+
+}
+
+uint32_t common_hal_alarm_sleep_memory_get_length(alarm_sleep_memory_obj_t *self) {
+    mp_raise_NotImplementedError(translate("Sleep Memory not available"));
+    return 0;
+}
+
+bool common_hal_alarm_sleep_memory_set_bytes(alarm_sleep_memory_obj_t *self, uint32_t start_index, const uint8_t *values, uint32_t len) {
+    mp_raise_NotImplementedError(translate("Sleep Memory not available"));
+    return false;
+}
+
+void common_hal_alarm_sleep_memory_get_bytes(alarm_sleep_memory_obj_t *self, uint32_t start_index, uint8_t *values, uint32_t len) {
+    mp_raise_NotImplementedError(translate("Sleep Memory not available"));
+    return;
+}

ports/stm/common-hal/alarm/SleepMemory.h

@@ -0,0 +1,38 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2021 Lucian Copeland for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef MICROPY_INCLUDED_STM32_COMMON_HAL_ALARM_SLEEPMEMORY_H
+#define MICROPY_INCLUDED_STM32_COMMON_HAL_ALARM_SLEEPMEMORY_H
+
+#include "py/obj.h"
+
+typedef struct {
+    mp_obj_base_t base;
+} alarm_sleep_memory_obj_t;
+
+extern void alarm_sleep_memory_reset(void);
+
+#endif // MICROPY_INCLUDED_STM32_COMMON_HAL_ALARM_SLEEPMEMORY_H