65 lines
1.1 KiB
C
65 lines
1.1 KiB
C
#include <pthread.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdbool.h>
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#include <string.h>
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#include <stdio.h>
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#include <time.h>
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#include "mqtt.h"
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#include "temperature.h"
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#include "device_id.h"
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void *watch_temperature(void *arg)
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{
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char *device_id = get_device_id();
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printf("Device ID: %s\n", device_id);
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temperature_handle_t temp_handle = init_temperature();
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get_temperature(temp_handle);
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while (true) {
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double temperature = get_temperature(temp_handle);
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size_t timestamp = time(NULL);
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char *format = "{"
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"\"temperature\": %lf,"
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"\"device_id\": \"%s\","
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"\"timestamp\": %zu"
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"}";
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char *str = malloc(snprintf(NULL, 0, format, temperature, device_id, timestamp) + 1);
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sprintf(str, format, temperature, device_id, timestamp);
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mqtt_send_message("temperature", str);
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free(str);
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printf("Temperature: %lf\n", temperature);
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sleep(60);
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}
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destroy_device_id(device_id);
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return NULL;
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}
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void mqtt_on_connect(void)
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{
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pthread_t temperature_thread;
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pthread_create(&temperature_thread, NULL, watch_temperature, NULL);
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}
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int main(void)
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{
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srand(time(NULL));
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init_mqtt();
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return EXIT_SUCCESS;
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}
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