Yeelink Http请求格式分析

以下是基于STM32通过广和通通讯模组L610实时监测温度上报到腾讯云的代码示例： ```c #include "main.h" #include "stdio.h" #include "stdlib.h" #include "string.h" #include "stdbool.h" #include "usart.h" #include "gpio.h" #include "cmsis_os.h" #include "dht11.h" #include "sim800c.h" #define SENSOR_PIN GPIO_PIN_6 #define SENSOR_PORT GPIOC DHT11_Data_TypeDef temp_data; // 存储温湿度传感器数据的结构体 bool is_sensor_ready = false; // 温湿度传感器是否已准备好标志位 void DHT11_Read_Data(void const * argument) { while (1) { if (DHT11_Read(&temp_data) == DHT11_OK) { is_sensor_ready = true; } osDelay(2000); } } void SIM800C_Init(void) { SIM800C_PWR_On(); osDelay(5000); SIM800C_Send_AT_Command("ATE0\r\n"); osDelay(200); } void SIM800C_Connect_To_Network(void) { SIM800C_Send_AT_Command("AT+CREG?\r\n"); osDelay(2000); SIM800C_Send_AT_Command("AT+CGATT=1\r\n"); osDelay(5000); } void SIM800C_Connect_To_Internet(void) { SIM800C_Send_AT_Command("AT+CIPSHUT\r\n"); osDelay(2000); SIM800C_Send_AT_Command("AT+CIPMUX=0\r\n"); osDelay(200); SIM800C_Send_AT_Command("AT+CIPMODE=0\r\n"); osDelay(200); SIM800C_Send_AT_Command("AT+CSTT=\"CMNET\"\r\n"); osDelay(2000); SIM800C_Send_AT_Command("AT+CIICR\r\n"); osDelay(5000); } bool SIM800C_Connect_To_Server(void) { SIM800C_Send_AT_Command("AT+CIPSTART=\"TCP\",\"api.yeelink.net\",\"80\"\r\n"); osDelay(2000); if (strstr(SIM800C_Response_Buffer, "CONNECT OK") != NULL) { return true; } else { return false; } } void SIM800C_Disconnect_From_Server(void) { SIM800C_Send_AT_Command("AT+CIPCLOSE\r\n"); osDelay(2000); } bool SIM800C_Send_HTTP_Request(char *url, char *api_key, char *data) { char http_request[256] = {0}; sprintf(http_request, "GET %s HTTP/1.1\r\nHost: api.yeelink.net\r\nU-ApiKey: %s\r\nContent-Length: %d\r\nContent-Type: application/x-www-form-urlencoded\r\n\r\n%s", url, api_key, strlen(data), data); char http_request_length[16] = {0}; sprintf(http_request_length, "AT+CIPSEND=%d\r\n", strlen(http_request)); SIM800C_Send_AT_Command(http_request_length); osDelay(200); SIM800C_Send_AT_Command(http_request); osDelay(2000); if (strstr(SIM800C_Response_Buffer, "SEND OK") != NULL) { return true; } else { return false; } } void Send_Temperature_Data_To_Yeelink(void const * argument) { while (1) { if (is_sensor_ready) { char temperature_data[64] = {0}; sprintf(temperature_data, "field1=%d.%d", temp_data.Temperature / 10, temp_data.Temperature % 10); SIM800C_Connect_To_Server(); SIM800C_Send_HTTP_Request("/v1.0/device/12345/sensor/67890/datapoints", "abcdefg1234567", temperature_data); SIM800C_Disconnect_From_Server(); is_sensor_ready = false; } osDelay(1000); } } int main(void) { HAL_Init(); SystemClock_Config(); MX_GPIO_Init(); MX_USART2_UART_Init(); osKernelInitialize(); SIM800C_Init(); DHT11_Init(SENSOR_PORT, SENSOR_PIN); osThreadNew(DHT11_Read_Data, NULL, NULL); SIM800C_Connect_To_Network(); SIM800C_Connect_To_Internet(); osThreadNew(Send_Temperature_Data_To_Yeelink, NULL, NULL); osKernelStart(); while (1); } ``` 以上代码基于FreeRTOS操作系统，在CubeMX中生成的基本工程基础上进行开发。其中，DHT11_Read_Data函数通过DHT11_Read函数读取温湿度传感器数据，并将读到的数据存储在temp_data结构体中。Send_Temperature_Data_To_Yeelink函数将temp_data中的温度数据发送到腾讯云的Yeelink平台。SIM800C_Init初始化SIM800C模块，SIM800C_Connect_To_Network连接到网络，SIM800C_Connect_To_Internet连接到互联网，SIM800C_Connect_To_Server连接到腾讯云服务器，SIM800C_Send_HTTP_Request发送HTTP请求，SIM800C_Disconnect_From_Server断开与腾讯云服务器的连接。