BoskoopBase/embadet/main/apple.c

#include "apple.h"

int app_main() {
    // Fill struct
    struct appledata send;
    getmac(send.mac);
    send.upTime = getUpTime();
    send.temp = getTemp();
    send.batteryVoltage = 3.3;

    printf("Hello \n");
    printf("%d\n", send.upTime);
    printf("%.4f\n", send.temp);

    // End function
    return 0;
}

/*
 * Function: getmac
 * ----------------------
 * Changes the pointer to the devices mac address
 *
 * *buf: The pointer to set the mac address at
 */
void getmac(uint8_t *buf) {
    // Get MAC address of the WiFi station interface
    esp_read_mac(buf, ESP_MAC_WIFI_STA);
}

/*
 * Function: getUpTime
 * ----------------------
 * Calculates the current uptime of the device
 *
 * returns: The current uptime of the device in int
 */
int getUpTime() {
    // Get system uptime in milliseconds
    int uptime = (xTaskGetTickCount() * (1000 / configTICK_RATE_HZ));
    return uptime;
}

/*
 * Function: getTemp
 * ----------------------
 * Get the current temprature of the attaches sensor
 *
 * returns: The current temprature of the sensor
 */
float getTemp() {
    float temp = 0.0;
    ds18b20_handler_t sensor;

    // Initialize DS18B20 sensor
    if (!ds18b20_init(&sensor, GPIO_NUM_2, TEMP_RES_12_BIT)) {
        ESP_LOGE("DS18B20", "Failed to initialize DS18B20 sensor!");
        return -1.0; // Indicate an error with a negative value
    }

    // Convert temperature
    ds18b20_convert_temp(&sensor);

    // Read the temperature
    temp = ds18b20_read_temp(&sensor);

    // Check if the temperature is within a reasonable range for DS18B20
    if (temp < -55.0 || temp > 125.0) {
        ESP_LOGE("DS18B20", "Temperature reading out of range: %.2f", temp);
        return -1.0; // Indicate invalid reading
    }

    return temp;
}