ESP32S2: Support for WatchDog

locale/circuitpython.pot

@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2020-11-04 21:18+0530\n"
+"POT-Creation-Date: 2020-11-10 15:30+0530\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <[email protected]>\n"
@@ -296,7 +296,8 @@ msgstr ""
 msgid "All I2C peripherals are in use"
 msgstr ""
 
-#: ports/esp32s2/peripherals/pcnt_handler.c
+#: ports/esp32s2/common-hal/countio/Counter.c
+#: ports/esp32s2/common-hal/rotaryio/IncrementalEncoder.c
 msgid "All PCNT units in use"
 msgstr ""
 
@@ -992,6 +993,10 @@ msgstr ""
 msgid "Incorrect buffer size"
 msgstr ""
 
+#: ports/esp32s2/common-hal/watchdog/WatchDogTimer.c
+msgid "Initialization failed due to lack of memory"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "Input taking too long"
 msgstr ""
@@ -3201,6 +3206,7 @@ msgstr ""
 msgid "pow() with 3 arguments requires integers"
 msgstr ""
 
+#: ports/esp32s2/boards/adafruit_magtag_2.9_grayscale/mpconfigboard.h
 #: ports/esp32s2/boards/adafruit_metro_esp32s2/mpconfigboard.h
 #: ports/esp32s2/boards/electroniccats_bastwifi/mpconfigboard.h
 #: ports/esp32s2/boards/espressif_kaluga_1/mpconfigboard.h
@@ -3416,6 +3422,7 @@ msgstr ""
 msgid "time.struct_time() takes a 9-sequence"
 msgstr ""
 
+#: ports/esp32s2/common-hal/watchdog/WatchDogTimer.c
 #: ports/nrf/common-hal/watchdog/WatchDogTimer.c
 msgid "timeout duration exceeded the maximum supported value"
 msgstr ""
@@ -3599,6 +3606,10 @@ msgstr ""
 msgid "vectors must have same lengths"
 msgstr ""
 
+#: ports/esp32s2/common-hal/watchdog/WatchDogTimer.c
+msgid "watchdog not initialized"
+msgstr ""
+
 #: shared-bindings/watchdog/WatchDogTimer.c
 msgid "watchdog timeout must be greater than 0"
 msgstr ""

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

@@ -85,6 +85,17 @@ const mcu_processor_obj_t common_hal_mcu_processor_obj = {
     },
 };
 
+#if CIRCUITPY_WATCHDOG
+// The singleton watchdog.WatchDogTimer object.
+watchdog_watchdogtimer_obj_t common_hal_mcu_watchdogtimer_obj = {
+    .base = {
+        .type = &watchdog_watchdogtimer_type,
+    },
+    .timeout = 0.0f,
+    .mode = WATCHDOGMODE_NONE,
+};
+#endif
+
 // This maps MCU pin names to pin objects.
 STATIC const mp_rom_map_elem_t mcu_pin_global_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_GPIO0), MP_ROM_PTR(&pin_GPIO0) },

ports/esp32s2/common-hal/watchdog/WatchDogMode.c

@@ -0,0 +1 @@
+// No watchdog module functions.

ports/esp32s2/common-hal/watchdog/WatchDogTimer.c

@@ -0,0 +1,93 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020 microDev
+ *
+ * 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 "py/runtime.h"
+#include "common-hal/watchdog/WatchDogTimer.h"
+
+#include "shared-bindings/watchdog/__init__.h"
+#include "shared-bindings/microcontroller/__init__.h"
+
+#include "esp_task_wdt.h"
+
+void esp_task_wdt_isr_user_handler(void) {
+    mp_obj_exception_clear_traceback(MP_OBJ_FROM_PTR(&mp_watchdog_timeout_exception));
+    MP_STATE_VM(mp_pending_exception) = &mp_watchdog_timeout_exception;
+#if MICROPY_ENABLE_SCHEDULER
+    if (MP_STATE_VM(sched_state) == MP_SCHED_IDLE) {
+        MP_STATE_VM(sched_state) = MP_SCHED_PENDING;
+    }
+#endif
+}
+
+void common_hal_watchdog_feed(watchdog_watchdogtimer_obj_t *self) {
+    if (esp_task_wdt_reset() != ESP_OK) {
+        mp_raise_RuntimeError(translate("watchdog not initialized"));
+    }
+}
+
+void common_hal_watchdog_deinit(watchdog_watchdogtimer_obj_t *self) {
+    if (esp_task_wdt_deinit() == ESP_OK) {
+        self->mode = WATCHDOGMODE_NONE;
+    }
+}
+
+void watchdog_reset(void) {
+   common_hal_watchdog_deinit(&common_hal_mcu_watchdogtimer_obj);
+}
+
+static void wdt_config(watchdog_watchdogtimer_obj_t *self) {
+    // enable panic hanler in WATCHDOGMODE_RESET mode
+    // initialize Task Watchdog Timer (TWDT)
+    if (esp_task_wdt_init((uint32_t)self->timeout, (self->mode == WATCHDOGMODE_RESET)) != ESP_OK) {
+        mp_raise_RuntimeError(translate("Initialization failed due to lack of memory"));
+    }
+    esp_task_wdt_add(NULL);
+}
+
+mp_float_t common_hal_watchdog_get_timeout(watchdog_watchdogtimer_obj_t *self) {
+    return self->timeout;
+}
+
+void common_hal_watchdog_set_timeout(watchdog_watchdogtimer_obj_t *self, mp_float_t new_timeout) {
+    if ((uint64_t)new_timeout > UINT32_MAX) {
+        mp_raise_ValueError(translate("timeout duration exceeded the maximum supported value"));
+    }
+    if ((uint32_t)self->timeout != (uint32_t)new_timeout) {
+        self->timeout = new_timeout;
+        wdt_config(self);
+    }
+}
+
+watchdog_watchdogmode_t common_hal_watchdog_get_mode(watchdog_watchdogtimer_obj_t *self) {
+    return self->mode;
+}
+
+void common_hal_watchdog_set_mode(watchdog_watchdogtimer_obj_t *self, watchdog_watchdogmode_t new_mode) {
+    if (self->mode != new_mode) {
+        self->mode = new_mode;
+        wdt_config(self);
+    }
+}

ports/esp32s2/common-hal/watchdog/WatchDogTimer.h

@@ -0,0 +1,43 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020 microDev
+ *
+ * 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_ESP32S2_COMMON_HAL_WATCHDOG_WATCHDOGTIMER_H
+#define MICROPY_INCLUDED_ESP32S2_COMMON_HAL_WATCHDOG_WATCHDOGTIMER_H
+
+#include "py/obj.h"
+#include "shared-bindings/watchdog/WatchDogMode.h"
+#include "shared-bindings/watchdog/WatchDogTimer.h"
+
+struct _watchdog_watchdogtimer_obj_t {
+  mp_obj_base_t base;
+  mp_float_t timeout;
+  watchdog_watchdogmode_t mode;
+};
+
+// This needs to be called in order to disable the watchdog
+void watchdog_reset(void);
+
+#endif // MICROPY_INCLUDED_ESP32S2_COMMON_HAL_WATCHDOG_WATCHDOGTIMER_H

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

@@ -0,0 +1 @@
+// No watchdog module functions.

ports/esp32s2/mpconfigport.mk

@@ -25,6 +25,7 @@ CIRCUITPY_NVM = 0
 # We don't have enough endpoints to include MIDI.
 CIRCUITPY_USB_MIDI = 0
 CIRCUITPY_WIFI = 1
+CIRCUITPY_WATCHDOG ?= 1
 CIRCUITPY_ESPIDF = 1
 
 ifndef CIRCUITPY_TOUCHIO_USE_NATIVE

ports/esp32s2/supervisor/port.c

@@ -41,6 +41,7 @@
 #include "common-hal/busio/UART.h"
 #include "common-hal/pulseio/PulseIn.h"
 #include "common-hal/pwmio/PWMOut.h"
+#include "common-hal/watchdog/WatchDogTimer.h"
 #include "common-hal/wifi/__init__.h"
 #include "supervisor/memory.h"
 #include "supervisor/shared/tick.h"
@@ -119,6 +120,10 @@ void reset_port(void) {
     rtc_reset();
 #endif
 
+#if CIRCUITPY_WATCHDOG
+    watchdog_reset();
+#endif
+
 #if CIRCUITPY_WIFI
     wifi_reset();
 #endif

ports/nrf/common-hal/watchdog/WatchDogTimer.c

@@ -93,6 +93,9 @@ void common_hal_watchdog_feed(watchdog_watchdogtimer_obj_t *self) {
 }
 
 void common_hal_watchdog_deinit(watchdog_watchdogtimer_obj_t *self) {
+    if (self->mode == WATCHDOGMODE_RESET) {
+        mp_raise_NotImplementedError(translate("WatchDogTimer cannot be deinitialized once mode is set to RESET"));
+    }
     if (timer) {
         timer_free();
     }

shared-bindings/watchdog/WatchDogTimer.c

@@ -66,6 +66,7 @@ STATIC mp_obj_t watchdog_watchdogtimer_feed(mp_obj_t self_in) {
     if (current_mode == WATCHDOGMODE_NONE) {
         mp_raise_ValueError(translate("WatchDogTimer is not currently running"));
     }
+
     common_hal_watchdog_feed(self);
     return mp_const_none;
 }
@@ -78,12 +79,6 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_1(watchdog_watchdogtimer_feed_obj, watchdog_watch
 //|
 STATIC mp_obj_t watchdog_watchdogtimer_deinit(mp_obj_t self_in) {
     watchdog_watchdogtimer_obj_t *self = MP_OBJ_TO_PTR(self_in);
-    watchdog_watchdogmode_t current_mode = common_hal_watchdog_get_mode(self);
-
-    if (current_mode == WATCHDOGMODE_RESET) {
-        mp_raise_NotImplementedError(translate("WatchDogTimer cannot be deinitialized once mode is set to RESET"));
-    }
-
     common_hal_watchdog_deinit(self);
     return mp_const_none;
 }