技能梳理8@esp8266+lua+onenet+血氧检测MAX30102

血氧检测设备，esp8266改造成nodemcu，lua编程解决连接onenet不稳定情况

1、项目简介

2、实现逻辑

#检测血氧
#超阈值蜂鸣器报警
#通过esp8266串口传输数据给onenet

3、应用场景

#血氧检测
#远程血氧检测

4、核心代码梳理

##stm32代码

//机智云协议初始化
void Gizwits_Init(void)
{	
	TIM3_Int_Init(9,7199);//1MS系统定时
    usart3_init(9600);//WIFI初始化
	memset((uint8_t*)&currentDataPoint, 0, sizeof(dataPoint_t));//设备状态结构体初始化
	gizwitsInit();//缓冲区初始化
}

//数据采集
void userHandle(void)
{
	currentDataPoint.valueheart = heart;
	currentDataPoint.valuehpo2  = hpo2;
	currentDataPoint.valuepre   = pre;
	currentDataPoint.valuestart = beep_flag;
}

//WiFi连接控制
void WIFI_Contection(u8 key)
{
	if(key==4)
	{
		printf("WIFI进入AirLink连接模式\r\n");
		gizwitsSetMode(WIFI_AIRLINK_MODE);//Air-link模式接入
	}		
}

int main(void)
{	
	int i=0,count=0;
	
	USART_CONFIG();
	delay_init();	    	    //延时函数初始化
	LED_Init();
	KEY_Init();	
	Adc1_Channe_Init();			//ADC初始化
	TIM4_Int_Init(2000,7199);	//200ms系统定时
	
	printf("这是串口调试助手\r\n");

	OLED_Init();				//OLED初始化
    OLED_Clear();
	
	IIC_GPIO_INIT();			//MAX30102中断引脚初始化
	MAX30102_GPIO();			//MAX30102接口引脚初始化
	Max30102_reset();			//MAX30102寄存器复位
	MAX30102_Config();			//MAX30102配置
	
	DS18B20_Init();				//DS18B20引脚初始化
	
	Gizwits_Init();				//机智云初始化
	
	for(i = 0;i < 128;i++) 
	{
		while(MAX30102_INTPin_Read()==0)
		{
			//读取FIFO
			max30102_read_fifo();
		}
	}
	
	GUI_DrawFont16(0,0,"心率检测",0);
	GUI_DrawFont16(0,2,"血氧检测",0);
	GUI_DrawFont16(0,4,"血压检测",0);
	GUI_DrawFont16(0,6,"健康状态",0);
	OLED_ShowString(64,0,":",16);
	OLED_ShowString(64,2,":",16);
	OLED_ShowString(64,4,":",16);
	OLED_ShowString(64,6,":",16);GUI_DrawFont16(72,6,"正常",0);
	
	sprintf(buff,"%3d/Min",0);
	OLED_ShowString(72,0,buff,16);
	
	sprintf(buff,"%3d%%",0);
	OLED_ShowString(72,2,buff,16);
	
	sprintf(buff,"%3dmmHg",0000);
	OLED_ShowString(72,4,buff,16);

//	STMFLASH_Write(FLASH_SAVE_ADDR+50,&heart_up,2);
//	STMFLASH_Write(FLASH_SAVE_ADDR+12,&heart_dw,2);
//	STMFLASH_Write(FLASH_SAVE_ADDR+14,&A_preup,2);
//	STMFLASH_Write(FLASH_SAVE_ADDR+16,&A_predw,2);
//	STMFLASH_Write(FLASH_SAVE_ADDR+18,&A_hpo2,2);
	
	//读取阈值数据
	STMFLASH_Read(FLASH_SAVE_ADDR+50,&heart_up,2);
	STMFLASH_Read(FLASH_SAVE_ADDR+12,&heart_dw,2);
	STMFLASH_Read(FLASH_SAVE_ADDR+14,&A_preup,2);
	STMFLASH_Read(FLASH_SAVE_ADDR+16,&A_predw,2);
	STMFLASH_Read(FLASH_SAVE_ADDR+18,&A_hpo2,2);
	
	
	while(1)
	{	
		Key_Value = KEY_Scan(0);//按键键值获取
		
		//强制心率值120控制
		if(Key_Value == 3)
		{
			heart_beep++;
			if(heart_beep>=2) heart_beep = 0;
			if(heart_beep == 0)
			{
				device_state = 0;
				beep_flag = 0;
				heart = 0;
			}
		}
		
		//心率算法检测
		if(heart_beep == 0)
		{
			blood_Loop();
			
			if(MAX30102_flag == 1 && g_blooddata.heart != 46)
			{
				MAX30102_flag = 0;
				LED0 = 0;
				BEEP = 1;
				device_state = 1;
				heart = AD_CH_LV1(10,g_blooddata.heart);
				hpo2  = AD_CH_LV2(10,(u8)g_blooddata.SpO2);//AD_CH_LV2(10,(u8)g_blooddata.SpO2);//(u8)g_blooddata.SpO2;
				delay_ms(100);
				LED0   = 1;
				BEEP   = 0;
			}else{	
				
			}
			if(g_blooddata.heart == 46)	
			{
				heart  = 0;
				hpo2   = 0;
				heart_start=0;
				device_state = 0;
			}
		}else{
			heart = 120;
			hpo2   = 0;
			device_state = 1;
		}
		
		//系统数据显示
		display0(72,0,heart);
		display1(72,2,hpo2);
		display_pre(72,4,pre);
		display_heart_start(72, 6, beep_flag);
		
		//系统蜂鸣器报警控制
		if((device_state == 1 && ((heart < heart_dw || heart > heart_up || hpo2 < A_hpo2))) || ((pre > A_preup) || (pre < A_predw)))
		{
			beep_flag = 1;
		}else{
			BEEP = 0;
			//LED0 = 1;
			beep_flag = 0;
			
		}

		//机智云数据上传
		userHandle();
		gizwitsHandle((dataPoint_t *)&currentDataPoint);//协议处理
		WIFI_Contection(Key_Value);
		
		count++;
		//系统阈值控制
		SYS_Set(Key_Value);																		
	}
}

void display0(u8 x,u8 y,u16 value)
{
	static u8 last_value;
	if(last_value != value)
	{
		sprintf(buff,"%3d/Min",value);
		OLED_ShowString(x,y,buff,16);
		last_value = value;
	}
}

void display1(u8 x,u8 y,u16 value)
{
	static u8 last_value;
	if(last_value != value)
	{
		sprintf(buff,"%3d%%",value);
		OLED_ShowString(x,y,buff,16);
		last_value = value;
	}
}

void display_pre(u8 x,u8 y,u16 value)
{
	static u8 last_value;
	if(last_value != value)
	{
		sprintf(buff,"%3dmmHg",value);
		OLED_ShowString(x,y,buff,16);
		last_value = value;
	}
}

void display_start(u8 x,u8 y,u8 start)
{
	static u8 last_value;
	if(last_value != start)
	{
		if(start == 0) OLED_ShowString(x,y,"NO",16);
		if(start == 1) OLED_ShowString(x,y,"OK",16);
		last_value = start;
	}
}

void display_heart_start(u8 x,u8 y,u8 start)
{
	static u8 last_value;
	if(last_value != start)
	{
		if(start == 0) GUI_DrawFont16(x,y,"正常  ",0);
		if(start == 1) GUI_DrawFont16(x,y,"异常  ",0);
		last_value = start;
	}
}


##lua代码
见资料包

5、部分参考资料

#下载固件是nodemcu-master-9-modules-2016-03-14-02-11-21-integer.bin
#lua编程入门
#esp8266固件及lua烧录过程入门

6、注意事项

#esp8266使用lua编程时要提前烧录支持lua的固件
#固件可以自己去官网根据需求定制生成，也可以使用现成的
#固件烧录的不同，lua也要对应的变化
#integer 不支持 float，但节省了 11 KB
固件含如下模块: cjson, file, gpio, net, node, pwm, tmr, uart, wifi.
#esp8266有至少两个固件下载的工具，其中一个有的版本不支持

完整可运行项目地址