watchdog: move timeout exception to shared-bindings

Make this exception globally available to all platforms that have
enabled the watchdog timer.

Signed-off-by: Sean Cross <[email protected]>

Author: xobs

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

@@ -50,22 +50,6 @@ STATIC nrfx_timer_t *timer = NULL;
 STATIC nrfx_wdt_t wdt = NRFX_WDT_INSTANCE(0);
 STATIC nrfx_wdt_channel_id wdt_channel_id;
 
-const mp_obj_type_t mp_type_WatchDogTimeout = {
-    { &mp_type_type },
-    .name = MP_QSTR_WatchDogTimeout,
-    .make_new = mp_obj_exception_make_new,
-    .attr = mp_obj_exception_attr,
-    .parent = &mp_type_Exception,
-};
-
-mp_obj_exception_t mp_watchdog_timeout_exception = {
-    .base.type = &mp_type_WatchDogTimeout,
-    .traceback_alloc = 0,
-    .traceback_len = 0,
-    .traceback_data = NULL,
-    .args = (mp_obj_tuple_t*)&mp_const_empty_tuple_obj,
-};
-
 STATIC void watchdogtimer_timer_event_handler(nrf_timer_event_t event_type, void *p_context) {
     watchdog_watchdogtimer_obj_t *self = MP_OBJ_TO_PTR(p_context);
     if (event_type != NRF_TIMER_EVENT_COMPARE0) {

shared-bindings/watchdog/__init__.c

@@ -55,6 +55,22 @@
 //|     w.feed()"""
 //|
 
+const mp_obj_type_t mp_type_WatchDogTimeout = {
+    { &mp_type_type },
+    .name = MP_QSTR_WatchDogTimeout,
+    .make_new = mp_obj_exception_make_new,
+    .attr = mp_obj_exception_attr,
+    .parent = &mp_type_Exception,
+};
+
+mp_obj_exception_t mp_watchdog_timeout_exception = {
+    .base.type = &mp_type_WatchDogTimeout,
+    .traceback_alloc = 0,
+    .traceback_len = 0,
+    .traceback_data = NULL,
+    .args = (mp_obj_tuple_t*)&mp_const_empty_tuple_obj,
+};
+
 STATIC const mp_rom_map_elem_t watchdog_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_watchdog) },
     { MP_ROM_QSTR(MP_QSTR_WatchDogMode),   MP_ROM_PTR(&watchdog_watchdogmode_type) },

shared-bindings/watchdog/__init__.h

@@ -28,5 +28,7 @@
 #define MICROPY_INCLUDED_SHARED_BINDINGS_WATCHDOG___INIT___H
 
 extern const mp_obj_module_t watchdog_module;
+extern mp_obj_exception_t mp_watchdog_timeout_exception;
+extern const mp_obj_type_t mp_type_WatchDogTimeout;
 
 #endif  // MICROPY_INCLUDED_SHARED_BINDINGS_WATCHDOG___INIT___H

supervisor/shared/tick.c

@@ -44,6 +44,13 @@ static volatile uint64_t PLACE_IN_DTCM_BSS(background_ticks);
 
 #include "shared-bindings/microcontroller/__init__.h"
 
+#ifdef CIRCUITPY_WATCHDOG
+#include "shared-bindings/watchdog/__init__.h"
+#define WATCHDOG_EXCEPTION_CHECK() (MP_STATE_VM(mp_pending_exception) == &mp_watchdog_timeout_exception)
+#else
+#define WATCHDOG_EXCEPTION_CHECK() 0
+#endif
+
 void supervisor_tick(void) {
 #if CIRCUITPY_FILESYSTEM_FLUSH_INTERVAL_MS > 0
     filesystem_tick();
@@ -86,13 +93,6 @@ void PLACE_IN_ITCM(supervisor_run_background_tasks_if_tick)() {
     run_background_tasks();
 }
 
-#ifdef CIRCUITPY_WATCHDOG
-extern mp_obj_exception_t mp_watchdog_timeout_exception;
-#define WATCHDOG_EXCEPTION_CHECK() (MP_STATE_VM(mp_pending_exception) == &mp_watchdog_timeout_exception)
-#else
-#define WATCHDOG_EXCEPTION_CHECK() 0
-#endif
-
 void mp_hal_delay_ms(mp_uint_t delay) {
     uint64_t start_tick = port_get_raw_ticks(NULL);
     // Adjust the delay to ticks vs ms.