225 lines
7.2 KiB
C
225 lines
7.2 KiB
C
#include <esp_wifi.h>
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#include <esp_event.h>
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#include <esp_log.h>
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#include <esp_system.h>
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#include <nvs_flash.h>
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#include <sys/param.h>
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#include <string.h>
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#include <stdlib.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "esp_http_server.h"
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#include "esp_netif.h"
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#include "esp_eth.h"
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#include "esp_http_client.h"
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#include "esp_tls.h"
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#include "protocol_examples_common.h"
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#include "bme280.h"
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#include "dht22.h"
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#define BME280_READOUT_DELAY 2000
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#define AM2303_READOUT_DELAY 4000
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#define MAX_HTTP_RECV_BUFFER 512
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static const char *TAG = "micro_climate";
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esp_err_t _http_event_handler(esp_http_client_event_t *evt);
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static void post_data_http(esp_http_client_handle_t,
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char* sensor, char *sensor_description, float temp, float humi, float pres);
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static void post_error_http(esp_http_client_handle_t,
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char *sensor, char *sensor_description, int err_code, char *error_details);
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static const char *db_worker_root = "http://192.168.1.107:3000";
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struct http_client_t {
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esp_http_client_handle_t bme280;
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esp_http_client_handle_t am2302;
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};
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struct http_client_t client;
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void init_http_clients();
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void init_http_clients(){
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char url[80];
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snprintf(url, 80, "%s/bme280", db_worker_root);
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esp_http_client_config_t config = { .url = url, .event_handler = _http_event_handler};
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client.bme280 = esp_http_client_init(&config);
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esp_http_client_set_method(client.bme280, HTTP_METHOD_POST);
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esp_http_client_set_header(client.bme280, "Content-Type", "application/json");
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snprintf(url, 80, "%s/am2302", db_worker_root);
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esp_http_client_config_t config2 = { .url = url, .event_handler = _http_event_handler};
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client.am2302 = esp_http_client_init(&config2);
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esp_http_client_set_method(client.am2302, HTTP_METHOD_POST);
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esp_http_client_set_header(client.am2302, "Content-Type", "application/json");
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}
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void setup_i2c(void);
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int8_t init_bme280(void);
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int8_t bme280_readout();
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int8_t lastReadoutStatus = 1;
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extern struct bme280_dev bme280; // from bme280_sup.c
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void DHT_task(void *pvParameter);
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void bme280_task(void *pvParameter);
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void app_main(void)
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{
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// initialization
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ESP_ERROR_CHECK(nvs_flash_init());
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ESP_ERROR_CHECK(esp_netif_init());
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ESP_ERROR_CHECK(esp_event_loop_create_default());
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// connect to wifi
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ESP_ERROR_CHECK(example_connect());
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// prepare url
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/* init_http_clients(); */
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// setup the sensors
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setup_i2c();
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int8_t ret = init_bme280();
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printf("BME init result %d\n", ret);
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vTaskDelay( 1000 / portTICK_RATE_MS );
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xTaskCreate( &DHT_task, "DHT_readout", 8192, NULL, 5, NULL );
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xTaskCreate( &bme280_task, "bme_readout", 8192, NULL, 5, NULL );
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}
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struct bme280_data comp_data;
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int8_t bme280_readout(){
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int8_t ret;
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char msgbuf[128];
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ret = bme280_set_sensor_mode(BME280_NORMAL_MODE, &bme280);
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bme280.delay_ms(40);
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ret = bme280_get_sensor_data(BME280_ALL, &comp_data, &bme280);
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if (ret != BME280_OK)
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ESP_LOGI(TAG, "bme280_get_sensor_data() returned %d", ret);
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snprintf(msgbuf, sizeof(msgbuf), "%.1f C, %0.1f hPa, %0.1f%%",
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comp_data.temperature, comp_data.pressure / 100., comp_data.humidity);
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ESP_LOGI(TAG, "%s", msgbuf);
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return ret;
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}
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void bme280_task(void *pvParameter){
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int8_t ret = 1;
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while (1) {
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ret = bme280_readout();
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if (ret == 0) {
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post_data_http(client.bme280, "bme280", "bedroom-bme280-01",
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comp_data.temperature, comp_data.humidity, comp_data.pressure / 100.);
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}
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else {
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post_error_http(client.bme280, "bme280", "bedroom-bme280-01",
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1, "some error");
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}
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// read_out every 2 sec
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vTaskDelay(BME280_READOUT_DELAY / portTICK_RATE_MS);
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}
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}
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void DHT_task(void *pvParameter)
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{
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setDHTgpio( 32 );
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char msgbuf[128];
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while(1) {
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int ret = readDHT();
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errorHandler(ret);
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if (ret == DHT_OK) {
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snprintf(msgbuf, sizeof(msgbuf), "am2302: %.2f C, %.2f %%",
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getTemperature(), getHumidity());
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post_data_http(client.am2302, "am2302", "bedroom-am2302-01",
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getTemperature(), getHumidity(), -1);
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ESP_LOGI(TAG, "%s", msgbuf);
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}
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else {
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post_error_http(client.am2302, "am2302", "bedroom-am2302-01",
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1, "some error");
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snprintf(msgbuf, sizeof(msgbuf), "am2302: return code %d", ret);
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ESP_LOGE(TAG, "%s", msgbuf);
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}
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// -- wait at least 2 sec before reading again ------------
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// The interval of whole process must be beyond 2 seconds !!
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vTaskDelay( AM2303_READOUT_DELAY / portTICK_RATE_MS );
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}
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}
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static void post_error_http(esp_http_client_handle_t client,
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char *sensor, char *sensor_description, int err_code, char *error_details){
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/* snprintf(post_data, sizeof(post_data), "{\"status\": failed, \"error\": \"could not read from sensor\", \"sensor\": \"%s\"}", s); */
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}
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static void post_data_http(esp_http_client_handle_t client,
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char* sensor, char *sensor_description, float temp, float humi, float pres)
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{
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char url[80];
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snprintf(url, 80, "%s/%s", db_worker_root, sensor);
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esp_http_client_config_t config = { .url = url, .event_handler = _http_event_handler};
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client = esp_http_client_init(&config);
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esp_http_client_set_method(client, HTTP_METHOD_POST);
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esp_http_client_set_header(client, "Content-Type", "application/json");
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// POST
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char post_data[256];
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snprintf(post_data, sizeof(post_data),
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"{\"status\": \"ok\", \"sensor\": \"%s\", \"temp\": %.2f, \"humidity\": %.2f, \"pressure\": %.2f}",
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sensor_description, temp, humi, pres);
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esp_http_client_set_post_field(client, post_data, strlen(post_data));
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esp_err_t err = esp_http_client_perform(client);
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if (err == ESP_OK) {
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ESP_LOGI(TAG, "HTTP POST Status = %d, content_length = %d",
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esp_http_client_get_status_code(client),
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esp_http_client_get_content_length(client));
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} else {
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ESP_LOGE(TAG, "HTTP POST request failed: %s", esp_err_to_name(err));
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}
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esp_http_client_cleanup(client);
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}
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esp_err_t _http_event_handler(esp_http_client_event_t *evt)
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{
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switch(evt->event_id) {
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case HTTP_EVENT_ERROR:
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ESP_LOGD(TAG, "HTTP_EVENT_ERROR");
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break;
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case HTTP_EVENT_ON_CONNECTED:
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ESP_LOGD(TAG, "HTTP_EVENT_ON_CONNECTED");
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break;
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case HTTP_EVENT_HEADER_SENT:
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ESP_LOGD(TAG, "HTTP_EVENT_HEADER_SENT");
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break;
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case HTTP_EVENT_ON_HEADER:
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ESP_LOGD(TAG, "HTTP_EVENT_ON_HEADER, key=%s, value=%s", evt->header_key, evt->header_value);
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break;
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case HTTP_EVENT_ON_DATA:
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ESP_LOGD(TAG, "HTTP_EVENT_ON_DATA, len=%d", evt->data_len);
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if (!esp_http_client_is_chunked_response(evt->client)) {
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// Write out data
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// printf("%.*s", evt->data_len, (char*)evt->data);
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}
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break;
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case HTTP_EVENT_ON_FINISH:
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ESP_LOGD(TAG, "HTTP_EVENT_ON_FINISH");
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break;
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case HTTP_EVENT_DISCONNECTED:
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ESP_LOGI(TAG, "HTTP_EVENT_DISCONNECTED");
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int mbedtls_err = 0;
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esp_err_t err = esp_tls_get_and_clear_last_error(evt->data, &mbedtls_err, NULL);
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if (err != 0) {
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ESP_LOGI(TAG, "Last esp error code: 0x%x", err);
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ESP_LOGI(TAG, "Last mbedtls failure: 0x%x", mbedtls_err);
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}
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break;
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}
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return ESP_OK;
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}
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