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#include <avr/io.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "controller.h"
#include "serial.h"
static void handle_set(char *buffer, uint16_t len)
{
const char *error_msg = "ERR Invalid number for temperature\r\n";
const char *error_msg2 = "ERR Temperature out of range.\r\n";
const char *success_msg = "OK Temperature set.\r\n";
const char *input;
char *endptr;
long temperature;
if (len < 2) {
serial_send(error_msg, strlen(error_msg), 0);
return;
}
input = buffer + 1;
temperature = strtol(input, &endptr, 10);
if (input[0] == '\r' || input[0] == '\n' ||
(endptr[0] != '\r' && endptr[0] != '\n')) {
serial_send(error_msg, strlen(error_msg), 0);
return;
}
if (controller_set(temperature)) {
serial_send(error_msg2, strlen(error_msg2), 0);
return;
}
serial_send(success_msg, strlen(success_msg), 0);
}
static void handle_off(char *buffer, uint16_t len)
{
const char *success_msg = "OK Powered down.\r\n";
controller_off();
serial_send(success_msg, strlen(success_msg), 0);
}
static void handle_get(char *buffer, uint16_t len)
{
char response[128];
snprintf(response, sizeof(response), "OK t=%ld\r\n", controller_get());
serial_send(response, strlen(response), 0);
}
uint16_t serial_rx_cb(char *buffer, uint16_t len)
{
const char *error_msg = "ERR Unknown command\r\n";
switch(buffer[len-1]) {
case '\r':
case '\n':
serial_send("\r\n", 2, 0);
break;
default:
/* If we didn't get a line break, just echo and return */
serial_send(&buffer[len-1], 1, 0);
return 0;
}
switch(buffer[0]) {
case 's':
case 'S':
handle_set(buffer, len);
break;
case 'g':
case 'G':
handle_get(buffer, len);
break;
case 'o':
case 'O':
handle_off(buffer, len);
break;
default:
serial_send(error_msg, strlen(error_msg), 0);
}
return len;
}
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