276 lines
11 KiB
C
276 lines
11 KiB
C
/*
|
|
weather.c - Weather data retrieval from api.openweathermap.org
|
|
|
|
This file is part of the ESP32 Everest Run project
|
|
https://github.com/krzychb/esp32-everest-run
|
|
|
|
Copyright (c) 2016 Krzysztof Budzynski <krzychb@gazeta.pl>
|
|
This work is licensed under the Apache License, Version 2.0, January 2004
|
|
See the file LICENSE for details.
|
|
*/
|
|
|
|
#include "freertos/FreeRTOS.h"
|
|
#include "freertos/task.h"
|
|
#include "esp_system.h"
|
|
#include "esp_log.h"
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include "meteofrance.h"
|
|
#include "cJSON.h"
|
|
#include "esp_http_client.h"
|
|
#include "esp_tls.h"
|
|
|
|
static const char* TAG = "MeteoFrance";
|
|
|
|
/* Constants that aren't configurable in menuconfig
|
|
Typically only LOCATION_ID may need to be changed
|
|
*/
|
|
#define WEB_SERVER "webservice.meteofrance.com" //"192.168.0.10" //"www.example.com"// //"webservice.meteofrance.com"
|
|
#define WEB_PORT 80//5403 //80
|
|
#define WEB_URL "/forecast"
|
|
#define TOKEN "__Wj7dVSTjV9YGu1guveLyDq0g7S7TfTjaHBTPTpO0kj8__"
|
|
// Location ID to get the weather data for
|
|
//#define LOCATION_ID "756135"
|
|
#define LATITUDE "49.22017054145735"
|
|
#define LONGITUDE "3.92188756221628"
|
|
#define WEB_QUERY "token="TOKEN"&lat="LATITUDE"&lon="LONGITUDE
|
|
|
|
#define MAX_HTTP_OUTPUT_BUFFER 32000
|
|
|
|
static weather_data weather;
|
|
static struct meteoforecast_data datas[5];
|
|
|
|
inline int MIN(int a, int b) { return a > b ? b : a; }
|
|
|
|
void printftemp(struct forecast_temp *tmp){
|
|
printf(" Temps Min:%f, Max:%f", tmp->min, tmp->max);
|
|
}
|
|
#define MAX_SIZE 80
|
|
|
|
void printffd(struct meteoforecast_data *tmp){
|
|
struct tm timeinfo = { 0 };
|
|
localtime_r(&tmp->datetime, &timeinfo);
|
|
char buffer[ MAX_SIZE ];
|
|
strftime(buffer, MAX_SIZE, "%c", &timeinfo);
|
|
char strftime_buf[64];
|
|
sprintf(strftime_buf,"%d %d %d", timeinfo.tm_wday, timeinfo.tm_mday, timeinfo.tm_mon+1);
|
|
ESP_LOGE(TAG,"%s",strftime_buf);
|
|
printf("IsValid:%s date:%s, Min:%.1f Max:%.1f Desc:%s\n", tmp->isValid ?"true":"false", buffer, tmp->previsions.min, tmp->previsions.max, tmp->previsions.desc);
|
|
}
|
|
|
|
esp_err_t _http_event_handler(esp_http_client_event_t *evt)
|
|
{
|
|
static char *output_buffer; // Buffer to store response of http request from event handler
|
|
static int output_len; // Stores number of bytes read
|
|
switch(evt->event_id) {
|
|
case HTTP_EVENT_ERROR:
|
|
ESP_LOGD(TAG, "HTTP_EVENT_ERROR");
|
|
break;
|
|
case HTTP_EVENT_ON_CONNECTED:
|
|
ESP_LOGD(TAG, "HTTP_EVENT_ON_CONNECTED");
|
|
break;
|
|
case HTTP_EVENT_HEADER_SENT:
|
|
ESP_LOGD(TAG, "HTTP_EVENT_HEADER_SENT");
|
|
break;
|
|
case HTTP_EVENT_ON_HEADER:
|
|
ESP_LOGD(TAG, "HTTP_EVENT_ON_HEADER, key=%s, value=%s", evt->header_key, evt->header_value);
|
|
break;
|
|
case HTTP_EVENT_ON_DATA:
|
|
ESP_LOGD(TAG, "HTTP_EVENT_ON_DATA, len=%d", evt->data_len);
|
|
// Clean the buffer in case of a new request
|
|
if (output_len == 0 && evt->user_data) {
|
|
// we are just starting to copy the output data into the use
|
|
memset(evt->user_data, 0, MAX_HTTP_OUTPUT_BUFFER);
|
|
}
|
|
/*
|
|
* Check for chunked encoding is added as the URL for chunked encoding used in this example returns binary data.
|
|
* However, event handler can also be used in case chunked encoding is used.
|
|
*/
|
|
if (!esp_http_client_is_chunked_response(evt->client)) {
|
|
// If user_data buffer is configured, copy the response into the buffer
|
|
int copy_len = 0;
|
|
if (evt->user_data) {
|
|
// The last byte in evt->user_data is kept for the NULL character in case of out-of-bound access.
|
|
copy_len = MIN(evt->data_len, (MAX_HTTP_OUTPUT_BUFFER - output_len));
|
|
if (copy_len) {
|
|
memcpy(evt->user_data + output_len, evt->data, copy_len);
|
|
}
|
|
} else {
|
|
int content_len = esp_http_client_get_content_length(evt->client);
|
|
if (output_buffer == NULL) {
|
|
// We initialize output_buffer with 0 because it is used by strlen() and similar functions therefore should be null terminated.
|
|
output_buffer = (char *) calloc(content_len + 1, sizeof(char));
|
|
output_len = 0;
|
|
if (output_buffer == NULL) {
|
|
ESP_LOGE(TAG, "Failed to allocate memory for output buffer");
|
|
return ESP_FAIL;
|
|
}
|
|
}
|
|
copy_len = MIN(evt->data_len, (content_len - output_len));
|
|
if (copy_len) {
|
|
memcpy(output_buffer + output_len, evt->data, copy_len);
|
|
}
|
|
}
|
|
output_len += copy_len;
|
|
}
|
|
|
|
break;
|
|
case HTTP_EVENT_ON_FINISH:
|
|
ESP_LOGD(TAG, "HTTP_EVENT_ON_FINISH");
|
|
if (output_buffer != NULL) {
|
|
// Response is accumulated in output_buffer. Uncomment the below line to print the accumulated response
|
|
// ESP_LOG_BUFFER_HEX(TAG, output_buffer, output_len);
|
|
free(output_buffer);
|
|
output_buffer = NULL;
|
|
}
|
|
output_len = 0;
|
|
break;
|
|
case HTTP_EVENT_DISCONNECTED:
|
|
ESP_LOGI(TAG, "HTTP_EVENT_DISCONNECTED");
|
|
int mbedtls_err = 0;
|
|
esp_err_t err = esp_tls_get_and_clear_last_error((esp_tls_error_handle_t)evt->data, &mbedtls_err, NULL);
|
|
if (err != 0) {
|
|
ESP_LOGI(TAG, "Last esp error code: 0x%x", err);
|
|
ESP_LOGI(TAG, "Last mbedtls failure: 0x%x", mbedtls_err);
|
|
}
|
|
if (output_buffer != NULL) {
|
|
free(output_buffer);
|
|
output_buffer = NULL;
|
|
}
|
|
output_len = 0;
|
|
break;
|
|
case HTTP_EVENT_REDIRECT:
|
|
ESP_LOGD(TAG, "HTTP_EVENT_REDIRECT");
|
|
esp_http_client_set_header(evt->client, "From", "user@example.com");
|
|
esp_http_client_set_header(evt->client, "Accept", "text/html");
|
|
esp_http_client_set_redirection(evt->client);
|
|
break;
|
|
}
|
|
return ESP_OK;
|
|
}
|
|
|
|
char *JSON_Types(int type) {
|
|
if (type == cJSON_Invalid) return ("cJSON_Invalid");
|
|
if (type == cJSON_False) return ("cJSON_False");
|
|
if (type == cJSON_True) return ("cJSON_True");
|
|
if (type == cJSON_NULL) return ("cJSON_NULL");
|
|
if (type == cJSON_Number) return ("cJSON_Number");
|
|
if (type == cJSON_String) return ("cJSON_String");
|
|
if (type == cJSON_Array) return ("cJSON_Array");
|
|
if (type == cJSON_Object) return ("cJSON_Object");
|
|
if (type == cJSON_Raw) return ("cJSON_Raw");
|
|
return NULL;
|
|
}
|
|
|
|
void JSON_Parse(const cJSON * const root) {
|
|
//ESP_LOGI(TAG, "root->type=%s", JSON_Types(root->type));
|
|
cJSON *current_element = NULL;
|
|
//ESP_LOGI(TAG, "roo->child=%p", root->child);
|
|
//ESP_LOGI(TAG, "roo->next =%p", root->next);
|
|
int i=0;
|
|
cJSON *df = cJSON_GetObjectItem(root,"daily_forecast");
|
|
if(!cJSON_IsArray(df)){
|
|
ESP_LOGE(TAG,"Pas de tableau ^^");
|
|
}else{
|
|
cJSON_ArrayForEach(current_element, df) {
|
|
struct meteoforecast_data datasT;
|
|
//ESP_LOGI(TAG, "type=%s", JSON_Types(current_element->type));
|
|
cJSON *dt = cJSON_GetObjectItem(current_element,"dt");
|
|
if(cJSON_IsNumber(dt)){
|
|
datasT.datetime=dt->valueint;
|
|
cJSON *temps = cJSON_GetObjectItem(current_element,"T");
|
|
datasT.previsions.min=cJSON_GetObjectItem(temps,"min")->valuedouble;
|
|
datasT.previsions.max=cJSON_GetObjectItem(temps,"max")->valuedouble;
|
|
|
|
cJSON *weather12=cJSON_GetObjectItem(current_element,"weather12H");
|
|
strncpy(datasT.previsions.desc,cJSON_GetObjectItem(weather12,"desc")->valuestring,24);
|
|
strncpy(datasT.previsions.icon,cJSON_GetObjectItem(weather12,"icon")->valuestring,8);
|
|
datasT.isValid=true;
|
|
//ESP_LOGE(TAG,"Donnees lues");
|
|
//printffd(&datasT);
|
|
datas[i++]=datasT;
|
|
if(i==3){break;}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static bool process_response_body(const char * body)
|
|
{
|
|
cJSON *root = cJSON_Parse(body);
|
|
JSON_Parse(root);
|
|
cJSON_Delete(root);
|
|
return true;
|
|
}
|
|
|
|
|
|
static void http_request_task(void *pvParameter)
|
|
{
|
|
while(1) {
|
|
ESP_LOGE(TAG,"Début recup méteo --------------------------");
|
|
weather.data_retreived_cb_start(NULL);
|
|
char *local_response_buffer = heap_caps_malloc((MAX_HTTP_OUTPUT_BUFFER + 1)*(sizeof(char)),MALLOC_CAP_SPIRAM);
|
|
//char local_response_buffer[MAX_HTTP_OUTPUT_BUFFER + 1] = {0};
|
|
/**
|
|
* NOTE: All the configuration parameters for http_client must be spefied either in URL or as host and path parameters.
|
|
* If host and path parameters are not set, query parameter will be ignored. In such cases,
|
|
* query parameter should be specified in URL.
|
|
*
|
|
* If URL as well as host and path parameters are specified, values of host and path will be considered.
|
|
*/
|
|
esp_http_client_config_t config = {
|
|
.host = WEB_SERVER,
|
|
.port = WEB_PORT,
|
|
.path = WEB_URL,
|
|
.query = WEB_QUERY,
|
|
.event_handler = _http_event_handler,
|
|
.user_data = local_response_buffer, // Pass address of local buffer to get response
|
|
.disable_auto_redirect = true,
|
|
};
|
|
esp_http_client_handle_t client = esp_http_client_init(&config);
|
|
char url[50];
|
|
esp_http_client_get_url(client,url,50);
|
|
ESP_LOGE(TAG,"%s",url);
|
|
|
|
// GET
|
|
esp_err_t err = esp_http_client_perform(client);
|
|
if (err == ESP_OK) {
|
|
ESP_LOGI(TAG, "HTTP GET Status = %d, content_length = %"PRId64,
|
|
esp_http_client_get_status_code(client),
|
|
esp_http_client_get_content_length(client));
|
|
} else {
|
|
ESP_LOGE(TAG, "HTTP GET request failed: %s", esp_err_to_name(err));
|
|
}
|
|
//ESP_LOGE(TAG, "%s",local_response_buffer);
|
|
|
|
process_response_body(local_response_buffer);
|
|
weather.data_retreived_cb(datas);
|
|
esp_http_client_cleanup(client);
|
|
|
|
//http_client_request(&http_client, WEB_SERVER, get_request);
|
|
vTaskDelay(weather.retreival_period / portTICK_PERIOD_MS);
|
|
}
|
|
}
|
|
|
|
void on_weather_data_retrieval(weather_data_callback data_retreived_cb)
|
|
{
|
|
weather.data_retreived_cb = data_retreived_cb;
|
|
}
|
|
|
|
void on_weather_data_retrieval_start(weather_data_callback data_retreived_cb_start)
|
|
{
|
|
weather.data_retreived_cb_start = data_retreived_cb_start;
|
|
}
|
|
|
|
void initialise_weather_data_retrieval(unsigned long retreival_period)
|
|
{
|
|
weather.retreival_period = retreival_period;
|
|
|
|
//http_client_on_process_chunk(&http_client, process_chunk);
|
|
//http_client_on_disconnected(&http_client, disconnected);
|
|
xTaskCreate(&http_request_task, "http_request_task", 10 * 2048, NULL, 5, NULL);
|
|
ESP_LOGI(TAG, "HTTP request task started");
|
|
}
|