Thu, 30 Mar 2023 17:05:05 +0200
Added task MQTT and some utilities. Added more power measurement variables and code. INA219 measurements are saved in the State record.
/** * @file task_mqtt.c * @brief The FreeRTOS task to maintain MQTT connections. */ #include "config.h" static const char *TAG = "task_mqtt"; EventGroupHandle_t xEventGroupMQTT; ///< Events MQTT task SemaphoreHandle_t xSemaphorePcounter; ///< Publish counter semaphore. int count_pub = 0; ///< Outstanding published messages. esp_mqtt_client_handle_t client; ///< MQTT client handle const int TASK_MQTT_CONNECT = BIT0; ///< Request MQTT connection const int TASK_MQTT_DISCONNECT = BIT1; ///< Request MQTT disconnect const int TASK_MQTT_CONNECTED = BIT2; ///< MQTT is connected const char *sensState[] = { "OK", "ERROR" }; ///< Sensor state strings const char *unitMode[] = { "OFF", "ON" }; ///< Units state strings extern BMP280_State *bmp280_state; ///< BMP280 state extern SemaphoreHandle_t xSemaphoreBMP280; ///< BMP280 lock semaphore extern INA219_State *ina219_state; ///< INA219 state extern SemaphoreHandle_t xSemaphoreINA219; ///< INA219 lock semaphore extern WIFI_State *wifi_state; ///< WiFi state extern SemaphoreHandle_t xSemaphoreWiFi; ///< WiFi lock semaphore extern const esp_app_desc_t *app_desc; extern uint32_t Alarm; extern float batteryState; extern float batteryVolts; extern float batteryCurrent; extern float batteryPower; extern float solarVolts; extern float solarCurrent; extern float solarPower; void connect_mqtt(bool state) { if (state) xEventGroupSetBits(xEventGroupMQTT, TASK_MQTT_CONNECT); else xEventGroupSetBits(xEventGroupMQTT, TASK_MQTT_DISCONNECT); } bool ready_mqtt(void) { if (xEventGroupGetBits(xEventGroupMQTT) & TASK_MQTT_CONNECTED) return true; return false; } /** * @brief Generate the mqtt payload header. * @return Allocated character string with the header. */ char *payload_header(void) { char *tmp; tmp = xstrcpy((char *)"{\"metric\":"); return tmp; } /** * @brief Generate the mqtt topic base part. * @return The topic string allocated in memory. */ char *topic_base(void) { char *tmp; #ifdef CONFIG_CODE_PRODUCTION tmp = xstrcpy((char *)"balkon/"); #endif #ifdef CONFIG_CODE_TESTING tmp = xstrcpy((char *)"wemos/"); #endif return tmp; } /** * @brief The mqtt generic publish function. * @param topic The topic of the mqtt message. * @param payload The payload of the mqtt message. */ void publisher(char *topic, char *payload) { /* * First count, then sent the data. */ if (xSemaphoreTake(xSemaphorePcounter, 10) == pdTRUE) { count_pub++; xSemaphoreGive(xSemaphorePcounter); } else { ESP_LOGE(TAG, "publisher() counter lock"); } if (payload) esp_mqtt_client_publish(client, topic, payload, strlen(payload), 1, 0); else esp_mqtt_client_publish(client, topic, NULL, 0, 1, 0); } void publish(void) { char *topic = NULL, *payload = NULL, buf[64]; // {"system":{"battery":70,"alarm":0,"version":"0.2.6","rssi":-56,"wifi":88,"light":{"lux":12.34,"gain":2}},"solar":{"voltage":13.98,"current":234.1,"power":3.272718},"battery":{"voltage":13.21,"current":4.942289,"power":0.065288},"real":{"current":229.1577},"TH":{"temperature":20.2,"humidity":48.3},"output":{"relay1":0,"relay2":0,"dimmer3":0,"dimmer4":0}} // payload = payload_header(); payload = xstrcat(payload, (char *)"{\"system\":{\"battery\":"); sprintf(buf, "%.0f", batteryState); payload = xstrcat(payload, buf); payload = xstrcat(payload, (char *)",\"alarm\":"); sprintf(buf, "%ld", Alarm); payload = xstrcat(payload, buf); payload = xstrcat(payload, (char *)",\"version\":\""); payload = xstrcat(payload, (char *)app_desc->version); payload = xstrcat(payload, (char *)",\"rssi\":"); payload = xstrcat(payload, (char *)",\"light\":{\"lux\":"); payload = xstrcat(payload, (char *)",\"gain\":"); payload = xstrcat(payload, (char *)"}},\"solar\":{\"voltage\":"); sprintf(buf, "%.2f", solarVolts); payload = xstrcat(payload, buf); payload = xstrcat(payload, (char *)",\"current\":"); sprintf(buf, "%.1f", solarCurrent); payload = xstrcat(payload, buf); payload = xstrcat(payload, (char *)",\"power\":"); sprintf(buf, "%.3f", solarPower / 1000.0); payload = xstrcat(payload, buf); payload = xstrcat(payload, (char *)"},\"battery\":{\"voltage\":"); sprintf(buf, "%.2f", batteryVolts); payload = xstrcat(payload, buf); payload = xstrcat(payload, (char *)",\"current\":"); sprintf(buf, "%.1f", batteryCurrent); payload = xstrcat(payload, buf); payload = xstrcat(payload, (char *)",\"power\":"); sprintf(buf, "%.3f", batteryPower / 1000.0); payload = xstrcat(payload, buf); payload = xstrcat(payload, (char *)"},\"real\":{\"current\":"); payload = xstrcat(payload, (char *)"},\"TB\":{\"temperature\":"); if (xSemaphoreTake(xSemaphoreBMP280, 25) == pdTRUE) { sprintf(buf, "%.2f", bmp280_state->temperature); payload = xstrcat(payload, buf); payload = xstrcat(payload, (char *)",\"pressure\":"); sprintf(buf, "%.1f", bmp280_state->pressure / 100.0); payload = xstrcat(payload, buf); xSemaphoreGive(xSemaphoreBMP280); } payload = xstrcat(payload, (char *)"},\"output\":{\"relay1\":"); payload = xstrcat(payload, (char *)",\"relay2\":"); payload = xstrcat(payload, (char *)",\"dimmer3\":"); payload = xstrcat(payload, (char *)",\"dimmer4\":"); payload = xstrcat(payload, (char *)"}}"); topic = topic_base(); topic = xstrcat(topic, (char *)"status"); publisher(topic, payload); free(topic); topic = NULL; free(payload); payload = NULL; } static esp_err_t mqtt_event_handler_cb(esp_mqtt_event_handle_t event) { switch (event->event_id) { case MQTT_EVENT_CONNECTED: ESP_LOGI(TAG, "MQTT_EVENT_CONNECTED"); xEventGroupSetBits(xEventGroupMQTT, TASK_MQTT_CONNECTED); break; case MQTT_EVENT_DISCONNECTED: ESP_LOGI(TAG, "MQTT_EVENT_DISCONNECTED"); xEventGroupClearBits(xEventGroupMQTT, TASK_MQTT_CONNECTED); break; case MQTT_EVENT_SUBSCRIBED: ESP_LOGI(TAG, "MQTT_EVENT_SUBSCRIBED, msg_id=%d", event->msg_id); break; case MQTT_EVENT_UNSUBSCRIBED: ESP_LOGI(TAG, "MQTT_EVENT_UNSUBSCRIBED, msg_id=%d", event->msg_id); break; case MQTT_EVENT_PUBLISHED: ESP_LOGI(TAG, "MQTT_EVENT_PUBLISHED, msg_id=%d", event->msg_id); if (xSemaphoreTake(xSemaphorePcounter, 10) == pdTRUE) { if (count_pub) { count_pub--; } xSemaphoreGive(xSemaphorePcounter); } else { ESP_LOGE(TAG, "mqtt_event_handler_cb(() lock error event"); } break; case MQTT_EVENT_DATA: ESP_LOGI(TAG, "MQTT_EVENT_DATA"); printf("TOPIC=%.*s\r\n", event->topic_len, event->topic); printf("DATA=%.*s\r\n", event->data_len, event->data); break; case MQTT_EVENT_ERROR: ESP_LOGI(TAG, "MQTT_EVENT_ERROR"); break; case MQTT_EVENT_BEFORE_CONNECT: ESP_LOGI(TAG, "MQTT_EVENT_BEFORE_CONNECT"); // Configure connection can be here. break; default: ESP_LOGI(TAG, "Other event id:%d", event->event_id); break; } return ESP_OK; } static void mqtt_event_handler(void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data) { mqtt_event_handler_cb(event_data); } /* * Task to read temperature sensors on request. */ void task_mqtt(void *pvParameter) { esp_err_t err; char *uri = NULL, port[11]; ESP_LOGI(TAG, "Starting MQTT task"); xSemaphorePcounter = xSemaphoreCreateMutex(); /* event handler and event group for the wifi driver */ xEventGroupMQTT = xEventGroupCreate(); EventBits_t uxBits; esp_mqtt_client_config_t mqtt_cfg = { .broker.address.uri = "mqtt://localhost", }; client = esp_mqtt_client_init(&mqtt_cfg); esp_mqtt_client_register_event(client, ESP_EVENT_ANY_ID, mqtt_event_handler, client); /* * Task loop forever. */ while (1) { uxBits = xEventGroupWaitBits(xEventGroupMQTT, TASK_MQTT_CONNECT | TASK_MQTT_DISCONNECT, pdFALSE, pdFALSE, portMAX_DELAY ); if (uxBits & TASK_MQTT_CONNECT) { uri = xstrcpy((char *)"mqtt://"); if (strlen(CONFIG_MQTT_USER) && strlen(CONFIG_MQTT_PASS)) { uri = xstrcat(uri, CONFIG_MQTT_USER); uri = xstrcat(uri, (char *)":"); uri = xstrcat(uri, CONFIG_MQTT_PASS); uri = xstrcat(uri, (char *)"@"); } uri = xstrcat(uri, CONFIG_MQTT_SERVER); if (CONFIG_MQTT_PORT != 1883) { uri = xstrcat(uri, (char *)":"); sprintf(port, "%d", CONFIG_MQTT_PORT); uri = xstrcat(uri, port); } ESP_LOGI(TAG, "Request MQTT connect %s", uri); err = esp_mqtt_client_set_uri(client, uri); if (err != ESP_OK) ESP_LOGE(TAG, "Set uri %s", esp_err_to_name(err)); err = esp_mqtt_client_start(client); if (err != ESP_OK) ESP_LOGE(TAG, "Result %s", esp_err_to_name(err)); xEventGroupClearBits(xEventGroupMQTT, TASK_MQTT_CONNECT); } else if (uxBits & TASK_MQTT_DISCONNECT) { ESP_LOGI(TAG, "Request MQTT disconnect"); esp_mqtt_client_stop(client); xEventGroupClearBits(xEventGroupMQTT, TASK_MQTT_DISCONNECT); xEventGroupClearBits(xEventGroupMQTT, TASK_MQTT_CONNECTED); } } }