modified: main/include/http_client.h

new file:   main/include/lib.h
	modified:   main/src/http_client.c
	modified:   main/src/main.c

firmware/main/include/http_client.h

@@ -17,7 +17,7 @@ bool hc_check_updates();
 struct hc_reg_res hc_reg_dev();
 struct hc_dev_config hc_get_dev_conf();
 
-void hc_send_sensor_data(int humidity, int temperature);
+void hc_send_sensor_data(float humidity, float temperature);
 
 #ifdef __cplusplus
 }

firmware/main/include/lib.h

@@ -0,0 +1,70 @@
+#ifndef LIB_H
+#define LIB_H
+
+
+
+// Helper function to reverse a string
+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
+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;
+}
+
+#endif

firmware/main/src/http_client.c

@@ -10,6 +10,7 @@
 #include <string.h>
 
 #include "http_client.h"
+#include "lib.h"
 
 const char * TAG = "http_client.c";
 
@@ -100,7 +101,11 @@ void hc_test()
     xTaskCreate(&http_get_task, "http_get_task", 16384, NULL, 5, NULL);
 }
 
-void hc_send_sensor_data(int humidity, int temperature) {
-    const char* msg = "{\"humidity\": 55,\"temperature\":25.6}";
-    send_message(msg);
+void hc_send_sensor_data(float humidity, float temperature) {
+    char tmp[50] = "{\"humidity\": ";
+    strcat(tmp, floatToString(humidity));
+    strcat(tmp, ",\"temperature\": ");
+    strcat(tmp, floatToString(temperature));
+    strcat(tmp, "}");
+    send_message(tmp);
 }

firmware/main/src/main.c

@@ -8,8 +8,8 @@
 #include "esp_http_client.h"
 
 #include <esp_err.h>
-#include "dht.h"
 
+#include "dht.h"
 #include "sensor.h"
 #include "http_client.h"
 
@@ -31,7 +31,7 @@ void wifi_init(void) {
     ESP_ERROR_CHECK(esp_wifi_start());
     ESP_ERROR_CHECK(esp_wifi_connect());
 }
-
+/*
 void temperature_task(void *arg)
 {
     ESP_ERROR_CHECK(dht_init(DHT_GPIO, false));
@@ -44,7 +44,6 @@ void temperature_task(void *arg)
             // e.g. in dht22, 604 = 60.4%, 252 = 25.2 C
             // If you want to print float data, you should run `make menuconfig`
             // to enable full newlib and call dht_read_float_data() here instead
-            //printf("Humidity: %d Temperature: %d\n", humidity, temperature);
             printf("Humidity: %d.%d%% Temperature: %d.%d\n", humidity/10, humidity%10, temperature/10,temperature%10);
         } else {
             printf("Fail to get dht temperature data\n");
@@ -53,12 +52,24 @@ void temperature_task(void *arg)
     }
     vTaskDelete(NULL);
 }
-
+*/
 void main_task(void* args) {
+    //ESP_ERROR_CHECK(dht_init(DHT_GPIO, false));
+    //vTaskDelay(2000 / portTICK_PERIOD_MS);
+    float humidity = 0;
+    float temperature = 0;
     while (1)
     {
-        hc_send_sensor_data(50,25);
-        vTaskDelay(5000 / portTICK_PERIOD_MS);
+        ESP_ERROR_CHECK(dht_init(DHT_GPIO, false));
+        vTaskDelay(4000 / portTICK_PERIOD_MS);
+
+        if (dht_read_float_data(DHT_TYPE_DHT22, DHT_GPIO, &humidity, &temperature) == ESP_OK) {
+        } else {
+            printf("Fail to get dht temperature data\n");
+        }
+
+        hc_send_sensor_data(humidity,temperature);
+        vTaskDelay(1000 / portTICK_PERIOD_MS);
     }
 }