#54 Pet the Watchdog

Core/Inc/monitor.h

@@ -6,7 +6,16 @@
 /* Defining Temperature Monitor Task */
 void vTempMonitor(void *pv_params);
 
+/**
+ * @brief Pet the watchdog
+ * @param pv_params GPIO_TypeDef pointer to the watchdog pin
+ */
+void vWatchdogMonitor(void *pv_params);
+
 extern osThreadId_t temp_monitor_handle;
 extern const osThreadAttr_t temp_monitor_attributes;
 
+extern osThreadId_t watchdog_monitor_handle;
+extern const osThreadAttr_t watchdog_monitor_attributes;
+
 #endif // MONITOR_H

Core/Src/main.c

@@ -148,7 +148,10 @@ int main(void)
 
   /* USER CODE BEGIN RTOS_THREADS */
   temp_monitor_handle = osThreadNew(vTempMonitor, &hi2c1, &temp_monitor_attributes);
+  watchdog_monitor_handle = osThreadNew(vWatchdogMonitor, GPIOB, &watchdog_monitor_attributes);
+
   route_can_incoming_handle = osThreadNew(vRouteCanIncoming, &hcan1, &route_can_incoming_attributes);
+
   /* USER CODE END RTOS_THREADS */
 
   /* USER CODE BEGIN RTOS_EVENTS */

Core/Src/monitor.c

@@ -6,6 +6,7 @@
 #include "can.h"
 #include "fault.h"
 #include "sht30.h"
+#include "stm32f405xx.h"
 
 osThreadId_t temp_monitor_handle;
 const osThreadAttr_t temp_monitor_attributes = {
@@ -42,7 +43,6 @@ void vTempMonitor(void *pv_params)
 	}
 
 	for(;;) {
-
 		/* Take measurement */
 		if (sht30_get_temp_humid(&temp_sensor)) {
 			fault_data.diag = "Failed to get temp";
@@ -68,4 +68,22 @@ void vTempMonitor(void *pv_params)
 		/* Yield to other tasks */
 		osDelayUntil(temp_sensor_sample_delay);
 	}
-}
+}
+
+osThreadId_t watchdog_monitor_handle;
+const osThreadAttr_t watchdog_monitor_attributes = {
+	.name = "WatchdogMonitor",
+	.stack_size = 128 * 4,
+	.priority = (osPriority_t) osPriorityLow,
+};
+
+void vWatchdogMonitor(void *pv_params)
+{
+	GPIO_TypeDef *gpio;
+	gpio = (GPIO_TypeDef *)pv_params;
+
+	for(;;) {
+		/* Pets Watchdog */
+		HAL_GPIO_WritePin(gpio, GPIO_PIN_15, GPIO_PIN_SET);
+	}
+}