Jump to reset vector when program exceeds specified watchdog timeout

src/main.c

@@ -7,13 +7,14 @@
 #include <avr/interrupt.h>
 
 // TODO: Convert raw data from ADS1115 to usable values.
-// TODO: Implement optional sensor value check with CRC8.
-// TODO: Set timeouts for polling based things like I2C.
-// TODO: Write an improved serial parser (low priority).
+// TODO: Implement optional CRC8 sensor measurement check.
 // TODO: Either implement software PWM for the FAN03 timer
 // (which will be quite complicated) or pick a chip with
 // more than two 16-bit PWM outputs like the ATmega328PB.
 // https://www.mikrocontroller.net/articles/Soft-PWM
+// TODO: Check if FAN02 is receiving the right frequency.
+// TODO: Write an improved command parser (low priority).
+// TODO: Proper error handling and recovery (after testing).
 
 int Init(void)
 {
@@ -48,8 +49,8 @@ int Init(void)
 	if (WDT_HasTriggered())
 		Info("Unexpected system reset.");
 
-	// WDT_Enable();
-	// WDT_SetTimeout(7);
+	WDT_Enable();
+	WDT_SetTimeoutFlag(0x7); // 2 seconds
 
 	// There is a possiblity to use interrupt signals
 	// for I2C communication but only as one large
@@ -98,8 +99,6 @@ void Update(void)
 	float temp[3], rhum[3];
 	short raw[4];
 
-	WDT_Reset(); // Reset watchdog
-
 	Info("Reading sensor values...");
 
 	I2C_SetChannel(AHT01);
@@ -128,7 +127,9 @@ int main(void)
 	Init();
 
 	for (;;) {
+		WDT_Reset();
 		Update();
+		WDT_Reset();
 		Sleep(1000);
 	}