Added MQTT

main/plant_mqtt.h

@@ -0,0 +1,86 @@
+#ifndef PLANT_MQTT_H
+#define PLANT_MQTT_H
+
+#include "esp_err.h"
+#include <stdbool.h>
+
+// MQTT Configuration - These can be overridden by Kconfig
+#ifndef CONFIG_MQTT_BROKER_URL
+#define CONFIG_MQTT_BROKER_URL    "mqtt://192.168.4.56:1883"
+#endif
+
+#ifndef CONFIG_MQTT_USERNAME
+#define CONFIG_MQTT_USERNAME      "esp32"
+#endif
+
+#ifndef CONFIG_MQTT_PASSWORD
+#define CONFIG_MQTT_PASSWORD      "esp32-plant"
+#endif
+
+#ifndef MQTT_CLIENT_ID
+#define MQTT_CLIENT_ID           "plant_watering_esp32"
+#endif
+
+#define MQTT_KEEPALIVE          60
+#define MQTT_QOS_0              0
+#define MQTT_QOS_1              1
+#define MQTT_RETAIN             1
+#define MQTT_NO_RETAIN          0
+
+// MQTT Topics
+#define TOPIC_STATUS             "plant_watering/status"
+#define TOPIC_MOISTURE_1         "plant_watering/moisture/1"
+#define TOPIC_MOISTURE_2         "plant_watering/moisture/2"
+#define TOPIC_PUMP_1_CMD         "plant_watering/pump/1/set"
+#define TOPIC_PUMP_2_CMD         "plant_watering/pump/2/set"
+#define TOPIC_PUMP_1_STATE       "plant_watering/pump/1/state"
+#define TOPIC_PUMP_2_STATE       "plant_watering/pump/2/state"
+#define TOPIC_CONFIG             "plant_watering/config"
+#define TOPIC_WATERING_STATS     "plant_watering/stats"
+#define TOPIC_LAST_WILL          "plant_watering/status"
+
+// Status messages
+#define STATUS_ONLINE            "online"
+#define STATUS_OFFLINE           "offline"
+
+// MQTT States
+typedef enum {
+    MQTT_STATE_DISCONNECTED,
+    MQTT_STATE_CONNECTING,
+    MQTT_STATE_CONNECTED,
+    MQTT_STATE_ERROR
+} mqtt_state_t;
+
+// Callbacks
+typedef void (*mqtt_connected_callback_t)(void);
+typedef void (*mqtt_disconnected_callback_t)(void);
+typedef void (*mqtt_data_callback_t)(const char* topic, const char* data, int data_len);
+
+// MQTT client functions
+esp_err_t mqtt_client_init(void);
+esp_err_t mqtt_client_start(void);
+esp_err_t mqtt_client_stop(void);
+esp_err_t mqtt_client_publish(const char* topic, const char* data, int qos, int retain);
+esp_err_t mqtt_client_subscribe(const char* topic, int qos);
+esp_err_t mqtt_client_unsubscribe(const char* topic);
+bool mqtt_client_is_connected(void);
+mqtt_state_t mqtt_client_get_state(void);
+
+// Callback registration
+void mqtt_client_register_callbacks(mqtt_connected_callback_t on_connected,
+                                  mqtt_disconnected_callback_t on_disconnected,
+                                  mqtt_data_callback_t on_data);
+
+// Configuration management
+esp_err_t mqtt_client_set_broker_url(const char* url);
+esp_err_t mqtt_client_set_credentials(const char* username, const char* password);
+esp_err_t mqtt_client_get_config(char* url, size_t url_len, 
+                                char* username, size_t username_len,
+                                char* password, size_t password_len);
+
+// Utility functions for common publishes
+esp_err_t mqtt_publish_status(const char* status);
+esp_err_t mqtt_publish_moisture(int sensor_id, int value);
+esp_err_t mqtt_publish_pump_state(int pump_id, bool state);
+
+#endif // PLANT_MQTT_H