Add control.set/feedWatchdog() on esp32 (#1303)

* Add control.set/feedWatchdog() on esp32

* re-generate shims

libs/core---esp32/pins.cpp

@@ -1,5 +1,7 @@
 #include "pxt.h"
 
+#include "esp_task_wdt.h"
+
 namespace pxt {
 static DevicePin **pinPtrs;
 static uint8_t numPinPtrs;
@@ -17,8 +19,7 @@ DevicePin *getPin(int id) {
     if (ptr == 0) {
         pinPtrs = (DevicePin **)realloc(pinPtrs, (numPinPtrs + 1) * sizeof(void *));
         // GCTODO
-        pinPtrs[numPinPtrs++] =
-            new DevicePin(id);
+        pinPtrs[numPinPtrs++] = new DevicePin(id);
         ptr = numPinPtrs;
         pinPos[id] = ptr;
     }
@@ -57,8 +58,8 @@ DevicePin *lookupPinCfg(int key) {
 
 namespace pins {
 /**
-* Get a pin by configuration id (DAL.CFG_PIN...)
-*/
+ * Get a pin by configuration id (DAL.CFG_PIN...)
+ */
 //%
 DigitalInOutPin pinByCfg(int key) {
     return pxt::lookupPinCfg(key);
@@ -74,3 +75,28 @@ Buffer createBuffer(int size) {
 }
 
 } // namespace pins
+
+namespace control {
+/**
+ * Enable a watchdog timer that need to be fed or it will reset the device.
+ * If timeout is not positive, the watchdog is disabled.
+ */
+//%
+void setWatchdog(int timeout_s) {
+    if (timeout_s > 0) {
+        esp_task_wdt_init(timeout_s, true);
+        esp_task_wdt_add(NULL);
+    } else {
+        esp_task_wdt_delete(NULL);
+    }
+}
+
+/**
+ * Reset timeout on previously enabled watchdog.
+ */
+//%
+void feedWatchdog() {
+    esp_task_wdt_reset();
+}
+
+} // namespace control

libs/core---esp32/shims.d.ts

@@ -14,6 +14,21 @@ declare namespace pins {
     //% shim=pins::createBuffer
     function createBuffer(size: int32): Buffer;
 }
+declare namespace control {
+
+    /**
+     * Enable a watchdog timer that need to be fed or it will reset the device.
+     * If timeout is not positive, the watchdog is disabled.
+     */
+    //% shim=control::setWatchdog
+    function setWatchdog(timeout_s: int32): void;
+
+    /**
+     * Reset timeout on previously enabled watchdog.
+     */
+    //% shim=control::feedWatchdog
+    function feedWatchdog(): void;
+}
 
 
 declare interface DigitalInOutPin {

libs/core---esp32s2/shims.d.ts

@@ -14,6 +14,21 @@ declare namespace pins {
     //% shim=pins::createBuffer
     function createBuffer(size: int32): Buffer;
 }
+declare namespace control {
+
+    /**
+     * Enable a watchdog timer that need to be fed or it will reset the device.
+     * If timeout is not positive, the watchdog is disabled.
+     */
+    //% shim=control::setWatchdog
+    function setWatchdog(timeout_s: int32): void;
+
+    /**
+     * Reset timeout on previously enabled watchdog.
+     */
+    //% shim=control::feedWatchdog
+    function feedWatchdog(): void;
+}
 
 
 declare interface DigitalInOutPin {