Start to work on GPIOs

esp32_device/main/constants.h

@@ -10,11 +10,6 @@
  */
 #define DEV_VERSION "0.0.1"
 
-/**
- * Device max number of relays
- */
-#define DEV_MAX_RELAYS 5
-
 /**
  * Backend unsecure API URL
  */

esp32_device/main/main.c

@@ -23,6 +23,7 @@ void app_main(void)
     ESP_LOGI(TAG, "SolarEnergy WT32-ETH01 device");
 
     // Turn off all relays
+    relays_setup();
     relays_turn_off_all();
 
     // Initialize storage
@@ -203,7 +204,7 @@ void app_main(void)
 
         sync_response_print(res);
 
-        for (size_t i = 0; i < DEV_MAX_RELAYS; i++)
+        for (size_t i = 0; i < relays_count(); i++)
         {
             relays_set(i, sync_response_is_relay_on(res, i));
         }

esp32_device/main/relays.c

@@ -9,13 +9,42 @@ static const char *TAG = "relays";
 /**
  * Device relays GPIO ids
  */
-static int DEVICE_GPIO_IDS[5] = {2, 4, 12, 14, 15};
+static int DEVICE_GPIO_IDS[3] = {4, 14, 15};
+
+int relays_count()
+{
+    return sizeof(DEVICE_GPIO_IDS) / sizeof(int);
+}
+
+void relays_setup()
+{
+    int pin_bit_mask = 0;
+    for (size_t i = 0; i < relays_count(); i++)
+    {
+        pin_bit_mask |= 1ULL << DEVICE_GPIO_IDS[i];
+    }
+
+    // zero-initialize the config structure.
+    gpio_config_t io_conf = {};
+    // disable interrupt
+    io_conf.intr_type = GPIO_INTR_DISABLE;
+    // set as output mode
+    io_conf.mode = GPIO_MODE_OUTPUT;
+    // bit mask of the pins that you want to set,e.g.GPIO18/19
+    io_conf.pin_bit_mask = pin_bit_mask;
+    // disable pull-down mode
+    io_conf.pull_down_en = 0;
+    // disable pull-up mode
+    io_conf.pull_up_en = 0;
+    // configure GPIO with the given settings
+    gpio_config(&io_conf);
+}
 
 void relays_turn_off_all()
 {
     ESP_LOGI(TAG, "Turning off all relays...");
 
-    for (size_t i = 0; i < DEV_MAX_RELAYS; i++)
+    for (size_t i = 0; i < relays_count(); i++)
     {
         relays_set(i, false);
     }
@@ -25,4 +54,10 @@ void relays_set(int number, bool is_on)
 {
     size_t gpio_id = DEVICE_GPIO_IDS[number];
     ESP_LOGI(TAG, "Set relay %d (gpio %d) to %s", number, gpio_id, is_on ? "on" : "off");
+
+    int res = gpio_set_level(gpio_id, is_on ? 0 : 1);
+    if (res != ESP_OK)
+    {
+        ESP_LOGE(TAG, "Failed to toggle GPIO %d : %d", gpio_id, res);
+    }
 }

esp32_device/main/relays.h

@@ -11,6 +11,16 @@ extern "C"
 {
 #endif
 
+    /**
+     * Get the max number of relays
+     */
+    int relays_count();
+
+    /**
+     * Configure the relays
+     */
+    void relays_setup();
+
     /**
      * Turn off all relays
      */

esp32_device/main/secure_api.c

@@ -11,6 +11,7 @@
 #include "storage.h"
 #include "http_client.h"
 #include "jwt.h"
+#include "relays.h"
 
 #include "esp_log.h"
 
@@ -122,7 +123,7 @@ static cJSON *genDevInfo()
         return NULL;
     cJSON_AddStringToObject(json, "reference", DEV_REFERENCE);
     cJSON_AddStringToObject(json, "version", DEV_VERSION);
-    cJSON_AddNumberToObject(json, "max_relays", DEV_MAX_RELAYS);
+    cJSON_AddNumberToObject(json, "max_relays", relays_count());
     return json;
 }