以STM32F103C8T6为主控制器，DHT11，光敏电阻传感器，MQ2烟雾传感器，ESP8266-01S将单片机收集到的数据打包并通过MQTT协议上传至OneNET云平台。整个系统的实现在keil5中编写程序，请给出主程序

很高兴回答您的问题！以下是一个STM32F103C8T6控制的传感器数据采集系统的主程序，其中包括DHT11，光敏电阻传感器和MQ2烟雾传感器。程序还使用ESP8266-01S将数据通过MQTT协议上传至OneNET云平台。

#include "stm32f10x.h"
#include "dht11.h"
#include "delay.h"
#include "usart.h"
#include "adc.h"
#include "mqtt.h"
#include "esp8266.h"
#include "string.h"

#define DHT11_PIN GPIO_Pin_0
#define DHT11_PORT GPIOA

#define LIGHT_PIN GPIO_Pin_1
#define LIGHT_PORT GPIOA

#define MQ2_PIN GPIO_Pin_2
#define MQ2_PORT GPIOA

uint8_t MAC[6] = {0x18, 0xFE, 0x34, 0x13, 0x57, 0x6B};
uint8_t IP[4] = {192, 168, 0, 110};
uint8_t SubnetMask[4] = {255, 255, 255, 0};
uint8_t Gateway[4] = {192, 168, 0, 1};
uint16_t Port = 1883;
uint8_t ProductID[] = "产品ID";
uint8_t DeviceID[] = "设备ID";
uint8_t ApiKey[] = "API Key";

MQTT_ClientTypeDef mqttClient;

void GPIO_Config(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

    GPIO_InitStructure.GPIO_Pin = DHT11_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(DHT11_PORT, &GPIO_InitStructure);

    GPIO_InitStructure.GPIO_Pin = LIGHT_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(LIGHT_PORT, &GPIO_InitStructure);

    GPIO_InitStructure.GPIO_Pin = MQ2_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(MQ2_PORT, &GPIO_InitStructure);
}

void UART_Config(void)
{
    USART_InitTypeDef USART_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1, ENABLE);

    GPIO_PinRemapConfig(GPIO_Remap_USART1, ENABLE);

    GPIO_InitTypeDef GPIO_InitStructure;
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    USART_InitStructure.USART_BaudRate = 115200;
    USART_InitStructure.USART_WordLength = USART_WordLength_8b;
    USART_InitStructure.USART_StopBits = USART_StopBits_1;
    USART_InitStructure.USART_Parity = USART_Parity_No;
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
    USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
    USART_Init(USART1, &USART_InitStructure);

    USART_Cmd(USART1, ENABLE);
}

void ADC_Config(void)
{
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_ADC1, ENABLE);

    GPIO_InitTypeDef GPIO_InitStructure;
    GPIO_InitStructure.GPIO_Pin = LIGHT_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    ADC_InitTypeDef ADC_InitStructure;
    ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
    ADC_InitStructure.ADC_ScanConvMode = DISABLE;
    ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
    ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
    ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
    ADC_InitStructure.ADC_NbrOfChannel = 1;
    ADC_Init(ADC1, &ADC_InitStructure);

    ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 1, ADC_SampleTime_55Cycles5);

    ADC_Cmd(ADC1, ENABLE);
}

void MQTT_Connect(void)
{
    uint8_t mqttStatus = 0;

    while (mqttStatus != MQTT_STATUS_CONNECTED)
    {
        mqttStatus = MQTT_Connect(&mqttClient);
        delay_ms(1000);
    }
}

void PublishData(float temp, float humi, uint16_t light, uint16_t smoke)
{
    uint8_t message[128];
    memset(message, 0, sizeof(message));
    sprintf((char *)message, "{\"temperature\":%.2f,\"humidity\":%.2f,\"light\":%d,\"smoke\":%d}", temp, humi, light, smoke);
    MQTT_Publish(&mqttClient, "/data", (char *)message, strlen((char *)message), 0);
}

int main(void)
{
    SystemInit();
    SysTick_Config(SystemCoreClock / 1000);
    GPIO_Config();
    UART_Config();
    ADC_Config();

    DHT11_Init();

    ESP8266_Init();
    ESP8266_WIFIMode(ESP8266_WIFI_MODE_STA);
    ESP8266_DHCPEnable(ESP8266_DHCP_MODE_ENABLE);
    ESP8266_ConnectAP("WiFi SSID", "WiFi Password");

    MQTT_Init(&mqttClient, IP, Port, MAC, ProductID, DeviceID, ApiKey);
    MQTT_Connect();

    while (1)
    {
        float temp, humi;
        uint16_t light, smoke;

        DHT11_Read_Data(&temp, &humi);

        light = ADC_GetConversionValue(ADC1);

        smoke = GPIO_ReadInputDataBit(MQ2_PORT, MQ2_PIN);

        PublishData(temp, humi, light, smoke);

        delay_ms(5000);
    }
}

上面的程序包含了DHT11，光敏电阻传感器和MQ2烟雾传感器的数据采集，并使用ESP8266将数据通过MQTT协议上传至OneNET云平台。请注意，您需要根据您的实际情况更改WiFi SSID，WiFi密码，产品ID，设备ID和API Key。