通过ESP8266连接WIFI,数据可上传OneNET
能够实现红外人体监测、光照度监测、烟雾浓度监测、一氧化碳浓度监测
当监测的气体浓度达到设定阈值后,可通过PWM调节风扇转速
能够通过OneNET远程调节LED亮度、风扇转速
单片机源程序如下:
- //C库
- #include <string.h>
- //单片机头文件
- #include "sys.h"
- //网络协议层
- #include "onenet.h"
- //网络设备
- #include "esp8266.h"
- //硬件驱动
- #include "delay.h"
- #include "usart.h"
- #include "led.h"
- #include "LCD.h"
- #include "dht11.h"
- #include "adc_dma.h"
- #include "mq2.h"
- #include "mq7.h"
- #include "timer.h"
- #include "bh1750.h"
- #include "gui.h"
- #include "hc_sr501.h"
- #include "hc_sr04.h"
- #include "TFT_demo.h"
- #include "pwm.h"
- #include "key.h"
- #include "beep.h"
- uint32_t time = 0; // ms 计时变量
- DHT11_Data_TypeDef DHT11_Data;
- float value_light = 0.0; //光照度
- float value_mq2 = 0.0; //烟雾浓度
- float value_mq7 = 0.0; //一氧化碳浓度
- float value_sr04 = 0.0; //超声波距离
- u8 status_sr501 = 0; //人体红外检测到的值
- int max_mq7 = 50; //一氧化碳浓度阈值
- int max_mq2 = 50; //烟雾浓度阈值
- u8 LED_Light; //PWM灯光亮度
- u8 FAN_Speed; //风扇转速
- //硬件初始化
- void Hardware_Init(void)
- {
- NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//设置中断优先级分组为组2:2位抢占优先级,2位响应优先级
- delay_init(); //延时函数初始化
- LCD_Init(); //液晶屏初始化
- LCD_Clear(GRAY0);
- Usart1_Init(115200); //串口1初始化为115200
- Usart2_Init(115200); //串口2,驱动ESP8266用
- LED_Init(); //LED初始化
- SR501_Init(); //红外热释电
- Hcsr04Init(); //超声波测距
- ADCx_Init(); //ADC DMA初始化
- DHT11_GPIO_Config(); //DHT11温湿度传感器初始化
- BH1750_Init(); //光照
- KEY_Init();
- BEEP_Init();
- PWM_TIM_Init(); //PWM频率=72000K/20*180=20Khz
- TIM_SetCompare3(TIM3, 0);
- Gui_DrawFont_GBK16(3, 34, BLUE, GRAY0, (u8 *)"设备初始化完成");
- Gui_DrawFont_GBK16(3, 54, BLUE, GRAY0, (u8 *)"正在连接网络....");
- }
- void Net_Init()
- {
- ESP8266_Init(); //初始化ESP8266
- while(OneNet_DevLink()) //接入OneNET
- delay_ms(500);
- LED1 = 0; //入网成功
- BEEP_SetOnOff(0);
- Gui_DrawFont_GBK16(4, 70, RED, GRAY0, (u8 *)"网络连接完成");
- delay_ms(2000);
- BEEP_SetOnOff(1);
- }
- int main(void)
- {
- unsigned char *dataPtr = NULL;
- unsigned short timeCount = 300; //发送间隔变量
- char str[] = "";
- Hardware_Init(); //初始化外围硬件
- Net_Init(); //网络初始化
- GENERAL_TIM_Init(); //1MS系统定时
- LCD_Clear(BLACK);
- Gui_DrawFont_GBK16(25, 4, BLUE, BLACK, (u8 *)" 系统监控 ");
- GUI_DrawRectangle(1, 1, 128 - 2, 128 - 2, WHITE); //边框
- while(1)
- {
- delay_ms(10);
- timeCount ++;
- //接收数据
- dataPtr = ESP8266_GetIPD(0);
- if(dataPtr != NULL)
- {
- OneNet_RevPro(dataPtr);
- }
- if(timeCount >= 300) //发送间隔5s
- {
- /* 温湿度传感器获取数据*/
- /*调用Read_DHT11读取温湿度,若成功则输出该信息*/
- if(Read_DHT11(&DHT11_Data) == SUCCESS)
- {
- sprintf(str, "温度:%d.%d ℃ ", DHT11_Data.temp_int, DHT11_Data.temp_deci);
- Gui_DrawFont_GBK16(4, 30, RED, BLACK, (u8 *)str);
- sprintf(str, "湿度:%d.%d %c ", DHT11_Data.humi_int, DHT11_Data.humi_deci, '%');
- Gui_DrawFont_GBK16(4, 50, RED, BLACK, (u8 *)str);
- }
- else
- {
- printf("Read DHT11 ERROR!\r\n");//读取数据失败,串口打印:Read DHT11 ERROR.
- Gui_DrawFont_GBK16(4, 30, RED, BLACK, (u8 *)"ERROR!");
- Gui_DrawFont_GBK16(4, 50, RED, BLACK, (u8 *)"ERROR!");
- }
- /*光照度传感器获取数据*/
- value_light = LIght_Intensity();
- sprintf(str, "光照:%.1flx ", value_light);
- Gui_DrawFont_GBK16(4, 70, YELLOW, BLACK, (u8 *)str);
- /*MQ2传感器获取烟雾数据*/
- value_mq2 = MQ2_GetPPM();
- sprintf(str, "烟雾:%.1f ppm ", value_mq2);
- Gui_DrawFont_GBK16(4, 90, BLUE, BLACK, (u8 *)str);
- /*MQ7传感器获取一氧化碳数据*/
- value_mq7 = MQ7_GetPPM();
- sprintf(str, " CO :%.1f ppm ", value_mq7);
- Gui_DrawFont_GBK16(4, 110, GREEN, BLACK, (u8 *)str);
- OneNet_SendData(); //发送数据
- timeCount = 0;
- ESP8266_Clear();
- }
- /*超声波测距获取距离(CM)*/
- //value_sr04 = Hcsr04GetLength();
- /*人体检测*/
- //status_sr501 = SR501_Check();
- //调节灯光亮度
- //PWM_Control(LED_Light);
- //调节风扇转速
- PWM_Control(FAN_Speed);
- /**************************************************************************/
- // //判断一氧化碳浓度是否超过上限
- // if((int)DHT11_Data.temp_int >= 15)
- // {
- // BEEP = 0; //蜂鸣器报警
- // }
- // else
- // {
- // BEEP = 1; //蜂鸣器关闭
- // }
- //判断一氧化碳浓度或烟雾浓度是否超过上限
- if(((int)value_mq7 >= max_mq7) || ((int)value_mq2 >= max_mq2))
- {
- BEEP = 0; //蜂鸣器报警
- }
- else
- {
- BEEP = 1; //蜂鸣器关闭
- }
- }
- }
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