basic action handling inplemented

src/main.c

@@ -78,6 +78,10 @@ ISR(TIMER2_OVF_vect) { /* timer 2 overflow interrupt vector */
 		timer2_ovf++; /* increase tachometer counter */
 	} else {
 		tachometer = 0; /* indicate no speed can be measured */
+		if (pwr_ok) { /* warn the fan is dead while the power in on */
+			power_flag = true;
+		}
+		timer2_ovf = 0;
 	}
 }
 
@@ -171,44 +175,56 @@ int main(void)
 	ioinit(); /* initialize IOs */
 
 	uint8_t command_i = 0; /* command index */
+	struct nec ir_data; /* last IR data */
+	ir_data.valid = false;
+	ir_data.repeat = false;
+	ir_data.address = 0;
+	ir_data.command = 0;
+	uint8_t ir_repeat = 0; /* number of times the IR data has been repeated */
 
 	puts("LED dimmer up & running");
 	while (true) {
 		/* handle user input */
 		while (input_flag) {
-			input_flag = false;
 			/* echo back */
 			char c = 0;
 			while (command_i<input_i) {
 				c = input[command_i++];
 				putchar(c);
 			}
-			action(c);
+			uart_action(c);
+			input_flag = false;
 		}
 		/* handle power state */
 		while (power_flag) {
-			power_flag = false;
 			if (pwr_ok) {
 				puts("power ok");
 				/* verify if FAN is present */
-				_delay_ms(1000);
+				_delay_ms(500);
 				if (0==tachometer) {
 					puts("FAN not on, switching power off");
 					PORTB |= (1<<nPS_ON);
 				}
 			} else {
-				puts("power ko");
+				puts("power off");
 			}
+			power_flag = false;
 		}
 		/* handle IR input */
 		while (ir_flag) {
 			time2nec(burst,pulse-1); /* convert raw time burst in NEC format */
-			struct nec ir_data = nec2data(burst,pulse-1); /* decode NEC burst */
-			if (ir_data.valid) {
-				if (ir_data.repeat) {
-					printf("IR signal repeated\n");
+			struct nec ir_tmp = nec2data(burst,pulse-1); /* decode NEC burst */
+			if (ir_tmp.valid) {
+				if (ir_tmp.repeat) {
+					if (ir_repeat<0xff) {
+						ir_repeat++;
+					}
 				} else {
-					printf("IR addr: %u, command: %u\n",ir_data.address,ir_data.command);
+					ir_data = ir_tmp;
+					ir_repeat = 0;
+				}
+				if (ir_repeat==0 || ir_repeat>3) {
+					ir_action(ir_data.address,ir_data.command);
 				}
 			}
 			pulse = 0; /* reset burst */
@@ -218,8 +234,7 @@ int main(void)
 	return 0;
 }
 
-
-static void action(char c)
+static void uart_action(char c)
 {
 	switch (c) {
 		case 'l':
@@ -369,3 +384,18 @@ static void action(char c)
 			break;
 	}
 }
+
+static void ir_action(uint8_t address, uint8_t command)
+{
+	if (0==address && 72==command) {
+		printf("switching power supply ");
+		if (PINB&(1<<nPS_ON)) {
+			puts("on");
+		} else {
+			puts("off");
+		}
+		PINB |= (1<<nPS_ON);
+	} else {
+		printf("IR addr: %u, command: %u\n", address, command);
+	}
+}

src/main.h

@@ -17,4 +17,5 @@
 #define CH2_5 PD7
 
 static void ioinit(void);
-static void action(char c);
+static void uart_action(char c);
+static void ir_action(uint8_t address, uint8_t command);