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server + getting sensor id + json in esp32

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mateusz
2026-09-13 18:14:19 +02:00
parent 98fb81702b
commit e481468a0a
20 changed files with 1133 additions and 4 deletions
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thermo_sensor/dependencies.lock
+12 -1
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@@ -65,13 +65,24 @@ dependencies:
- esp32s2
- esp32s3
version: 2.1.2
espressif/cjson:
component_hash: e788323270d90738662d66fffa910bfe1fba019bba087f01557e70c40485b469
dependencies:
- name: idf
require: private
version: '>=5.0'
source:
registry_url: https://components.espressif.com/
type: service
version: 1.7.19~2
idf:
source:
type: idf
version: 6.1.0
direct_dependencies:
- esp-idf-lib/bmp280
- espressif/cjson
- idf
manifest_hash: e9139083c387eac863d68b0a593ed1c2631dc643670305c76e9d8ac18ee8f285
manifest_hash: 2b2fa2812480ea444900bab732b40d55618df67e034421f1a347f9de48f70eeb
target: esp32
version: 3.0.0
thermo_sensor/main/CMakeLists.txt
+1 -1
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@@ -1,2 +1,2 @@
idf_component_register(SRCS "thermo_sensor.c" "ygg_http_routes.c" "ygg_bmp280.c" "../../common/esp32/ygg_wifi.c" "../../common/esp32/ygg_http_server.c"
idf_component_register(SRCS "thermo_sensor.c" "ygg_http_routes.c" "ygg_bmp280.c" "ygg_http_req.c" "../../common/esp32/ygg_wifi.c" "../../common/esp32/ygg_http_server.c"
INCLUDE_DIRS "." "../../common/esp32")
thermo_sensor/main/idf_component.yml
+1
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@@ -15,3 +15,4 @@ dependencies:
# # All dependencies of `main` are public by default.
# public: true
esp-idf-lib/bmp280: '*'
espressif/cjson: '*'
thermo_sensor/main/thermo_sensor.c
+5 -2
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@@ -2,7 +2,6 @@
#include <freertos/task.h>
#include <esp_system.h>
#include "esp_log.h"
#include "nvs_flash.h"
#include "esp_http_server.h"
@@ -11,6 +10,7 @@
#include "ygg_wifi.h"
#include "ygg_http_server.h"
#include "ygg_bmp280.h"
#include "ygg_http_req.h"
static const char *TAG = "thermo_sensor";
@@ -21,8 +21,11 @@ bmp280_t dev_bmp_280;
void main_loop(void *pvParameters) {
while (1) {
vTaskDelay(pdMS_TO_TICKS(500));
vTaskDelay(pdMS_TO_TICKS(10000));
ygg_bmp280_read_sensor(&dev_bmp_280);
ygg_send_sensor_redouts(last_temperature,
last_pressure,
last_humidity);
}
}
thermo_sensor/main/ygg_http_req.c
+141
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@@ -0,0 +1,141 @@
#include <stdio.h>
#include <string.h>
#include "cJSON.h"
#include "esp_log.h"
#include "esp_http_client.h"
#include "ygg_http_req.h"
#define GET_RESP_MAX_SIZE 4096
static const char *TAG = "YGG_HTTP_REQ";
static char GET_RESP[GET_RESP_MAX_SIZE];
esp_err_t _http_event_handler(esp_http_client_event_t *evt) {
return ESP_OK;
}
char* ygg_send_get(const char *url) {
size_t total = 0;
esp_http_client_config_t config = {
.url = url,
};
esp_http_client_handle_t client = esp_http_client_init(&config);
esp_err_t err = esp_http_client_open(client, 0);
if (err != ESP_OK) {
ESP_LOGE(TAG, "HTTP open error: %s", esp_err_to_name(err));
esp_http_client_cleanup(client);
return NULL;
}
esp_http_client_fetch_headers(client);
while (total < GET_RESP_MAX_SIZE - 1) {
int len = esp_http_client_read(
client,
GET_RESP + total,
GET_RESP_MAX_SIZE - 1 - total
);
if (len <= 0) {
break;
}
total += len;
}
GET_RESP[total] = '\0';
ESP_LOGI(TAG, "Status HTTP = %d",
esp_http_client_get_status_code(client));
ESP_LOGI(TAG, "Response: %s", GET_RESP);
esp_http_client_close(client);
esp_http_client_cleanup(client);
return GET_RESP;
}
void ygg_send_post(const char *url, char *post_data) {
esp_http_client_config_t config = {
.url = url,
.event_handler = _http_event_handler,
};
esp_http_client_handle_t client = esp_http_client_init(&config);
esp_http_client_set_method(client, HTTP_METHOD_POST);
esp_http_client_set_header(client, "Content-Type", "application/json");
esp_http_client_set_post_field(client, post_data, strlen(post_data));
esp_err_t err = esp_http_client_perform(client);
if (err == ESP_OK) {
ESP_LOGI(TAG, "Status HTTP = %d, Content-Length = %"PRId64,
esp_http_client_get_status_code(client),
esp_http_client_get_content_length(client));
} else {
ESP_LOGE(TAG, "HTTP connection error: %s", esp_err_to_name(err));
}
esp_http_client_cleanup(client);
}
int ygg_get_sensor_id(const char *sensor_name,
const char *url);
void ygg_send_sensor_redouts(float temp, float press, float hum) {
const char *url = "http://192.168.0.236:5000/api/sensors/1/readouts";
char post_data[64];
int sensor_id = ygg_get_sensor_id("bmp280", "http://192.168.0.236:5000");
snprintf(post_data, sizeof(post_data),
"{\"type\":\"temperature\", \"value\":%.2f}", temp);
ygg_send_post(url, post_data);
snprintf(post_data, sizeof(post_data),
"{\"type\":\"pressure\", \"value\":%.2f}", press);
ygg_send_post(url, post_data);
snprintf(post_data, sizeof(post_data),
"{\"type\":\"humidity\", \"value\":%.2f}", hum);
ygg_send_post(url, post_data);
}
char* ygg_get_sensors(const char *base_url) {
char url[128];
snprintf(url, sizeof(url),
"%s/api/sensors", base_url);
char *sensors = ygg_send_get(url);
return sensors;
}
int ygg_find_sensor(char *sensors, const char *sensor_name) {
cJSON *root = cJSON_Parse(sensors);
cJSON *item;
cJSON_ArrayForEach(item, root) {
cJSON *id = cJSON_GetObjectItem(item, "id");
cJSON *item_name = cJSON_GetObjectItem(item, "name");
if (cJSON_IsNumber(id) &&
cJSON_IsString(item_name) &&
strcmp(item_name->valuestring, sensor_name) == 0) {
int result = id->valueint;
cJSON_Delete(root);
return result;
}
}
cJSON_Delete(root);
return -1;
}
int ygg_get_sensor_id(const char *sensor_name,
const char *url) {
char *sensors = ygg_get_sensors(url);
int id = ygg_find_sensor(sensors, sensor_name);
ESP_LOGI(TAG, "Sensor ID: %d", id);
return 0;
//if (id == -1) {
// id = ygg_add_sensor(url, sensor_name);
//}
//return id;
}
thermo_sensor/main/ygg_http_req.h
+6
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@@ -0,0 +1,6 @@
#ifndef YGG_HTTP_REQ_H
#define YGG_HTTP_REQ_H
void ygg_send_sensor_redouts(float temp, float press, float hum);
#endif
thermo_sensor/sdkconfig
+9
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@@ -3484,6 +3484,15 @@ CONFIG_I2CDEV_TIMEOUT=1000
# default:
# CONFIG_I2CDEV_NOLOCK is not set
# end of I2C Device Library
#
# cJSON
#
# default:
CONFIG_CJSON_NESTING_LIMIT=1000
# default:
CONFIG_CJSON_CIRCULAR_LIMIT=10000
# end of cJSON
# end of Component config
# default: