modified: firmware/main/src/controller.c

modified:   firmware/main/src/leds.c
modified:   firmware/main/src/main.c
modified:   firmware/main/src/wifi.c

firmware/main/src/controller.c

@@ -6,7 +6,7 @@
 #include <nvs_flash.h>
 #include <esp_wifi.h>
 #include <esp_http_client.h>
-#include <cJSON.h>
+//#include <cJSON.h>
 #include <string.h>
 #include "controller.h"
 #include "functions.h"
@@ -71,6 +71,7 @@ esp_err_t send_sensor_data(unsigned id, float humidity, float temperature) {
     };
 
     // Create cJSON object
+    /*
     cJSON *json_payload = cJSON_CreateObject();
     if (json_payload == NULL) {
         ESP_LOGE(TAG, "Failed to create JSON object");
@@ -78,22 +79,14 @@ esp_err_t send_sensor_data(unsigned id, float humidity, float temperature) {
     }
 
     // Add data to the JSON object
-    if (!cJSON_AddNumberToObject(json_payload, "temperature", temperature) ||
+    if (
+        !cJSON_AddNumberToObject(json_payload, "temperature", temperature) ||
         !cJSON_AddNumberToObject(json_payload, "humidity", humidity) ||
         !cJSON_AddNumberToObject(json_payload, "id", id)) {
         ESP_LOGE(TAG, "Failed to add data to JSON object");
         cJSON_Delete(json_payload);
         return ESP_FAIL;
     }
-    /*
-    char tmp[100] = "{\"humidity\": ";
-    strcat(tmp, floatToString(humidity));
-    strcat(tmp, ",\"temperature\": ");
-    strcat(tmp, floatToString(temperature));
-    strcat(tmp, ",\"id\": ");
-    strcat(tmp, intToString(id));
-    strcat(tmp, "}");
-    */
 
     // Print JSON object
     char *json_string = cJSON_PrintUnformatted(json_payload);
@@ -102,15 +95,25 @@ esp_err_t send_sensor_data(unsigned id, float humidity, float temperature) {
         cJSON_Delete(json_payload);
         return ESP_FAIL;
     }
+    */
 
-    ESP_LOGI(TAG, "Set up htttp client...");
+    char msg[60] = "{\"humidity\":";
+    strcat(msg, floatToString(humidity));
+    strcat(msg, ",\"temperature\":");
+    strcat(msg, floatToString(temperature));
+    strcat(msg, ",\"id\":");
+    strcat(msg, intToString(id));
+    strcat(msg, "}");
+
+
+    ESP_LOGI(TAG, "Set up http client...");
     esp_http_client_handle_t client = esp_http_client_init(&config);
 
     // Set HTTP headers
     esp_http_client_set_header(client, "Content-Type", "application/json");
     // Set POST data
-    esp_http_client_set_post_field(client, json_string, strlen(json_string));
+    //esp_http_client_set_post_field(client, json_string, strlen(json_string));
-
+    esp_http_client_set_post_field(client, msg, strlen(msg));
 
     // Perform the HTTP POST request
     err = esp_http_client_perform(client);
@@ -133,8 +136,8 @@ esp_err_t send_sensor_data(unsigned id, float humidity, float temperature) {
 
     // Cleanup
     esp_http_client_cleanup(client);
-    cJSON_Delete(json_payload);
+    //cJSON_Delete(json_payload);
-    free(json_string);
+    //free(json_string);
 
     return 0;
 }

firmware/main/src/leds.c

@@ -38,6 +38,8 @@ esp_err_t led_init() {
     gpio_set_direction(LED2,GPIO_MODE_OUTPUT);
     gpio_set_direction(LED_INT,GPIO_MODE_OUTPUT);
     led0_on();
+    led1_off();
+    led2_off();
     return ESP_OK;
 }
 

firmware/main/src/main.c

@@ -49,7 +49,7 @@ void mainTask(void *pvParameters) {
 }
 */
 void app_main() {
-    ESP_ERROR_CHECK(nvs_flash_init());
+    //ESP_ERROR_CHECK(nvs_flash_init());
     ESP_ERROR_CHECK(led_init());
     ESP_ERROR_CHECK(wifi_init());
     ESP_ERROR_CHECK(sht31_init());
@@ -68,20 +68,23 @@ void app_main() {
 
     while (1) {
         if (sht31_read_temp_hum(&temperature, &humidity) == ESP_OK) {
-	        split_float(temperature, &temp_int_part, &temp_dec_part);
+	        //split_float(temperature, &temp_int_part, &temp_dec_part);
-	        split_float(humidity, &hum_int_part, &hum_dec_part);
+	        //split_float(humidity, &hum_int_part, &hum_dec_part);
-            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));
+            //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));
+            ESP_LOGI(TAG, "Temperature: %s°C, Humidity: %s%%", floatToString(temperature), floatToString(humidity));
 
 	        if(wifi_on() == ESP_OK) {
                 // Send temperature...
-                send_sensor_data(0, humidity, temperature);
+                ESP_LOGI(TAG, "Sending temperature and humidity values to control node...");
+                send_sensor_data(1, humidity, temperature);
+                ESP_LOGI(TAG, "Done sending temperature and humidity values to control node.");
 	            wifi_off();
             }
         }
         else {
             ESP_LOGE(TAG, "Failed to read from SHT31 sensor");
         }
-        vTaskDelay(10000 / portTICK_RATE_MS);
+        vTaskDelay(60000 / portTICK_RATE_MS);
     }
 
 

firmware/main/src/wifi.c

@@ -3,16 +3,38 @@
 #include <esp_log.h>
 #include <esp_wifi.h>
 //#include <esp_http_client.h>
+//#include "esp_netif.h"
 #include "functions.h"
 #include "wifi.h"
 #include "leds.h"
 
 static const char * TAG = "wifi.c";
 
-esp_err_t wifi_init(void) {
+esp_err_t wifi_init() {
+    // Init IP Stack
     tcpip_adapter_init();
     ESP_ERROR_CHECK(esp_event_loop_create_default());
+    return ESP_OK;
+}
 
+static bool wait_for_connected() {
+    tcpip_adapter_ip_info_t ip_info;
+    
+    unsigned repeats = 10;
+    for(unsigned i = 0; i < repeats; ++i)
+    {
+        if ( tcpip_adapter_get_ip_info( TCPIP_ADAPTER_IF_STA, &ip_info ) == ESP_OK && ip_info.ip.addr != 0 ) {
+            ESP_LOGI(TAG, "IP Address: " IPSTR, IP2STR(&ip_info.ip));
+            return ESP_OK;
+        }
+        vTaskDelay(1000 / portTICK_RATE_MS);
+    }
+    ESP_LOGE(TAG, "Timed out waiting for ip address from dhcp server.");
+    return ESP_FAIL;
+}
+
+// Function to turn on WiFi
+esp_err_t wifi_on() {
     wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
     
     ESP_ERROR_CHECK(esp_wifi_init(&cfg));
@@ -34,18 +56,20 @@ esp_err_t wifi_init(void) {
     //ESP_ERROR_CHECK(esp_wifi_set_ps(WIFI_PS_MIN_MODEM));
     ESP_ERROR_CHECK(esp_wifi_set_ps(WIFI_PS_MAX_MODEM));
 
-    return ESP_OK;
-}
-
-// Function to turn on WiFi
-esp_err_t wifi_on() {
     ESP_LOGI(TAG, "Turning WiFi ON...");
     esp_wifi_start();  // Start WiFi
     ESP_LOGI(TAG, "WiFi is ON and connecting...");
     esp_wifi_connect();
-    ESP_LOGI(TAG, "WiFi is ON and connected to AP.");
     led1_on();
+    ESP_LOGI(TAG, "WiFi is ON and connected to AP.");
+    if (wait_for_connected() == ESP_OK) {
+        led2_on();
         return ESP_OK;
+    }
+    else {
+        wifi_off();
+        return ESP_FAIL;
+    }
 }
 
 // Function to turn off WiFi
@@ -54,7 +78,9 @@ esp_err_t wifi_off() {
     esp_wifi_disconnect();
     ESP_LOGI(TAG, "WiFi disconnected. Turning WiFi OFF...");
     esp_wifi_stop();  // Stop WiFi
-    ESP_LOGI(TAG, "WiFi is OFF.");
+    esp_wifi_deinit();
     led1_off();
+    led2_off();
+    ESP_LOGI(TAG, "WiFi is OFF.");
     return ESP_OK;
 }