Add some conversions from celsius to adc valuesHEADmaster

Luckily, this ATMega is grossly oversized, so we can
just throw in floating point arithmetic.

1 files changed, 5 insertions, 3 deletions

diff --git a/command.c b/command.c
index 7d8c515..09b91ec 100644
--- a/command.c
+++ b/command.c
@@ -14,7 +14,7 @@ static void handle_set(char *buffer, uint16_t len)
 	const char *success_msg = "OK Temperature set.\r\n";
 	const char *input;
 	char *endptr;
-	long temperature;
+	double temperature;
 
 	if (len < 2) {
 		serial_send(error_msg, strlen(error_msg), 0);
@@ -22,7 +22,7 @@ static void handle_set(char *buffer, uint16_t len)
 	}
 
 	input = buffer + 1;
-	temperature = strtol(input, &endptr, 10);
+	temperature = strtod(input, &endptr);
 	if (input[0] == '\r' || input[0] == '\n' ||
 			(endptr[0] != '\r' && endptr[0] != '\n')) {
 		serial_send(error_msg, strlen(error_msg), 0);
@@ -48,8 +48,10 @@ static void handle_off(char *buffer, uint16_t len)
 static void handle_get(char *buffer, uint16_t len)
 {
 	char response[128];
+	long temp = 10 * controller_get();
 
-	snprintf(response, sizeof(response), "OK t=%ld\r\n", controller_get());
+	/* printf won't print doubles on avr */
+	snprintf(response, sizeof(response), "OK t=%ld.%ld\r\n", temp/10, temp%10);
 	serial_send(response, strlen(response), 0);
 }