new file: main/include/functions.h

modified:   main/include/sht31.h
renamed:    main/include/lib.h -> main/src/functions.c
modified:   main/src/http_client.c
modified:   main/src/main.c
modified:   main/src/sht31.c

firmware/main/src/functions.c

@@ -0,0 +1,119 @@
+#include "functions.h"
+#include "freertos/FreeRTOS.h"
+
+static const char * TAG = "functions.c";
+
+void split_float(float num, int *int_part, float *dec_part) {
+    // Extract the integer part
+    *int_part = (float)((int)num);
+    
+    // Calculate the fractional part by subtracting the integer part from the original number
+    *dec_part = num - *int_part;
+}
+
+// Helper function to reverse a string
+static void reverse(char* str, int len) {
+    int i = 0, j = len - 1;
+    while (i < j) {
+        char temp = str[i];
+        str[i] = str[j];
+        str[j] = temp;
+        i++;
+        j--;
+    }
+}
+
+// Helper function to convert an integer to a string
+static int intToStr(int x, char str[], int d) {
+    int i = 0;
+    while (x) {
+        str[i++] = (x % 10) + '0';
+        x = x / 10;
+    }
+
+    // If the number of digits required is more, then add 0s at the beginning
+    while (i < d)
+        str[i++] = '0';
+
+    reverse(str, i);
+    str[i] = '\0';
+    return i;
+}
+
+char* floatToString(float num) {
+    // Allocate memory for the string
+    char* str = (char*)malloc(50 * sizeof(char));
+    if (str == NULL) {
+        // If memory allocation fails, return NULL
+        return NULL;
+    }
+
+    // Handle integer part
+    int intPart = (int)num;
+    int i = intToStr(intPart, str, 0);
+
+    // Handle fractional part
+    float fractionalPart = num - (float)intPart;
+    if (fractionalPart < 0) {
+        fractionalPart = -fractionalPart;
+    }
+
+    if (fractionalPart != 0) {
+        str[i++] = '.'; // Add decimal point
+
+        // Consider precision up to 6 digits after the decimal point
+        for (int j = 0; j < 6; j++) {
+            fractionalPart = fractionalPart * 10;
+            int fracIntPart = (int)fractionalPart;
+            str[i++] = fracIntPart + '0';
+            fractionalPart = fractionalPart - fracIntPart;
+        }
+    }
+
+    str[i] = '\0'; // Null-terminate the string
+
+    return str;
+}
+
+// Function to convert an integer to a string
+char* intToString(int num)
+{
+    // Allocate memory for the string
+    char* str = (char*)malloc(50 * sizeof(char));
+
+    int i = 0;
+    // Save the sign of the number
+    int sign = num;
+
+    // If the number is negative, make it positive
+    if (num < 0) {
+        num = -num;
+    }
+
+    // Extract digits from the number and add them to the
+    // string
+    do {
+        // Convert integer digit to character
+        str[i++] = num % 10 + '0';
+    } while ((num /= 10) > 0);
+
+    // If the number was negative, add a minus sign to the
+    // string
+    if (sign < 0) {
+        str[i++] = '-';
+    }
+
+    // Null-terminate the string
+    str[i] = '\0';
+
+    // Reverse the string to get the correct order
+    for (int j = 0, k = i - 1; j < k; j++, k--) {
+        char temp = str[j];
+        str[j] = str[k];
+        str[k] = temp;
+    }
+
+    return str;
+}
+
+

firmware/main/src/http_client.c

@@ -11,7 +11,7 @@
 #include <string.h>
 
 #include "http_client.h"
-#include "lib.h"
+#include "functions.h"
 
 #define MAX_HTTP_OUTPUT_BUFFER 2048
 

firmware/main/src/main.c

@@ -17,7 +17,7 @@
 
 
 static const char * TAG = "main.c";
-/*
+
 static void wifi_init(void) {
     tcpip_adapter_init();
     ESP_ERROR_CHECK(esp_event_loop_create_default());
@@ -34,7 +34,7 @@ static void wifi_init(void) {
     ESP_ERROR_CHECK(esp_wifi_start());
     ESP_ERROR_CHECK(esp_wifi_connect());
 }
-*/
+
 
 static void split_float(float num, int *int_part, float *dec_part) {
     // Extract the integer part
@@ -45,27 +45,6 @@ static void split_float(float num, int *int_part, float *dec_part) {
 }
 
 
-void sensor_tester(void)
-{
-    ESP_ERROR_CHECK(sht31_init());
-
-    //float temperature, humidity;
-    float temperature, humidity, temp_dec_part, hum_dec_part;
-    int temp_int_part, hum_int_part;
-
-    while (1) {
-        if (sht31_read_temp_hum(&temperature, &humidity) == ESP_OK) {
-	    split_float(temperature, &temp_int_part, &temp_dec_part);
-	    split_float(humidity, &hum_int_part, &hum_dec_part);
-            //ESP_LOGI(TAG, "Temperature: %.2f°C, Humidity: %.2f%%", temperature, humidity);
-            ESP_LOGI(TAG, "Temperature: %i.%i°C, Humidity: %i.%i%%", temp_int_part, (int)(temp_dec_part*1000), hum_int_part, (int)(hum_dec_part*1000));
-        } else {
-            ESP_LOGE(TAG, "Failed to read from SHT31 sensor");
-        }
-        vTaskDelay(2000 / portTICK_RATE_MS);
-    }
-}
-
 // Task to read data from UART
 void uart_read_task(void *pvParameters) {
      const unsigned bufferSize = 1024;
@@ -126,9 +105,8 @@ void app_main()
     //wifi_init();
     initLEDs();
 
-    sensor_tester();
-
-    //xTaskCreate(&led_blink_task, "led_blink_task", configMINIMAL_STACK_SIZE, NULL, 5, NULL);
-    xTaskCreate(uart_read_task, "uart_read_task", 2048, NULL, 10, NULL);
+    xTaskCreate(&led_blink_task, "led_blink_task", configMINIMAL_STACK_SIZE, NULL, 5, NULL);
+    //xTaskCreate(uart_read_task, "uart_read_task", 2048, NULL, 10, NULL);
+    xTaskCreate(sht31_sensor_test_task, "sht31_sensor_test_task", 2048, NULL, 10, NULL);
     //xTaskCreate(main_task, "main task", 2048, NULL, tskIDLE_PRIORITY, NULL);
 }

firmware/main/src/sht31.c

@@ -4,6 +4,7 @@
 //#include <freertos/FreeRTOS.h>
 #include <freertos/task.h>
 #include <esp_log.h>
+#include "functions.h"
 
 #define SDA_PIN GPIO_NUM_2
 #define CLK_PIN GPIO_NUM_14
@@ -24,6 +25,27 @@ static const i2c_config_t config = {
     .clk_stretch_tick = 5
 };
 
+void sht31_sensor_test_task(void *pvParameters)
+{
+    ESP_ERROR_CHECK(sht31_init());
+
+    //float temperature, humidity;
+    float temperature, humidity, temp_dec_part, hum_dec_part;
+    int temp_int_part, hum_int_part;
+
+    while (1) {
+        if (sht31_read_temp_hum(&temperature, &humidity) == ESP_OK) {
+	    split_float(temperature, &temp_int_part, &temp_dec_part);
+	    split_float(humidity, &hum_int_part, &hum_dec_part);
+            //ESP_LOGI(TAG, "Temperature: %.2f°C, Humidity: %.2f%%", temperature, humidity);
+            ESP_LOGI(TAG, "Temperature: %i.%i°C, Humidity: %i.%i%%", temp_int_part, (int)(temp_dec_part*1000), hum_int_part, (int)(hum_dec_part*1000));
+        } else {
+            ESP_LOGE(TAG, "Failed to read from SHT31 sensor");
+        }
+        vTaskDelay(2000 / portTICK_RATE_MS);
+    }
+}
+
 // Function to initialize the sensor
 esp_err_t sht31_init(void) {
     esp_err_t install_rc = i2c_driver_install(I2C_NUM_0, config.mode);
@@ -36,26 +58,6 @@ esp_err_t sht31_init(void) {
     return ESP_OK;
 }
 
-// Function to get the current humidity level
-// Returns the humidity as a percentage (0-100)
-float sht31_get_humidity(void) {
-    // Read humidity data from the sensor
-    // This is a dummy value for the purpose of this example
-    float humidity = 50.0;  // Replace with actual sensor reading
-    printf("Humidity read: %.2f%%\n", humidity);
-    return humidity;
-}
-
-// Function to get the current temperature
-// Returns the temperature in degrees Celsius
-float sht31_get_temperature(void) {
-    // Read temperature data from the sensor
-    // This is a dummy value for the purpose of this example
-    float temperature = 22.0;  // Replace with actual sensor reading
-    printf("Temperature read: %.2f°C\n", temperature);
-    return temperature;
-}
-
 esp_err_t sht31_read_temp_hum(float *temperature, float *humidity)
 {
     uint8_t data[6];