LightingSystemApp-bluetooth/common/blue_request.js

// #ifdef APP
	import ecUI from '@/utils/ecUI.js'
	import ecBLE from '@/utils/ecBLE/ecBLE.js'
	// #endif   
	// #ifdef MP
	const ecUI = require('@/utils/ecUI.js')
	const ecBLE = require('@/utils/ecBLE/ecBLE.js')
// #endif

export function hexToString(hex) 
{
	var tmp = '';
	if(hex < 0)
	{
		hex=hex+256;
	}
	tmp = hex.toString(16)
	tmp = tmp.padStart(2, '0')
	return tmp
}

export function send_uart(id,cc,icode,len,msg)
{
	var code=''
	var send_data=[],send_stringdata='',send_length=0;
	if(cc == '08')
	{
		send_length = 18
	}
	else if(cc == '8f')
	{
	   send_length = len+12;
	}
	else{
		send_length = len+14;
	}

	send_data[0]='68';
	send_data[7]='68';
	for(var i=0 ; i<6; i ++)
	{
		send_data[6-i] = id.substr(2*i,2);
	}
				
	//获取控制码
	send_data[8]=cc;
				
	var i1,i2,i3,i4
	
	if(cc == '08'||cc == '8f')
	{
		//获取长度
		send_data[9]=hexToString(len);
		//获取时钟 ss mm hh dd mm yy+33H
		for(var i1=0 ; i1<len; i1 ++)
		{
			send_data[10+i1] = hexToString((parseInt(msg.substr(2*i1,2),16)+51)%256);
		}
	}
	else{
		//获取长度
		send_data[9]=hexToString(len+2);
		
		//获取 icode ，同时+33H
		if(cc=="0f"){
			for(var i=0 ; i<2; i++)
			{
				send_data[10+i] = icode.substr(2*i,2);
			}
		}else{
			for(var i=0 ; i<2; i++)
			{
				send_data[11-i] = hexToString((parseInt(icode.substr(2*i,2),16)+51)%256);
			}
		}
		
		//获取数据内容 +33H
		if(icode=='b200'){
			//文件校验和
			for(var b1=0;b1<4;b1++){
				send_data[15-b1] = hexToString((parseInt(msg.textChecks.substr(2*b1,2),16)+51)%256);
			}
			//数据长度
			for(var b2=0;b2<4;b2++){
				send_data[19-b2] = hexToString((parseInt(msg.lenChecks.substr(2*b2,2),16)+51)%256);
			}
		}else if(cc=="0f"){
			for(var i=0;i<len;i++){
				send_data[12+i] = hexToString((msg[i]+51)%256);
			}
		}else{
			for(var i1=0 ; i1<len; i1++)
			{
				send_data[12+i1] = hexToString((parseInt(msg.substr(2*i1,2),16)+51)%256);
			}
		}
		
	}
	
	// if(cc=='0f'){
	// 	let sum2=0
	// 	for(var j2 = 0;j2 <send_length-2;j2++)
	// 	{
	// 		sum2= sum2+parseInt(send_data[j2],16);
	// 	}
	// 	sum2 = sum2.toString().slice(-2);
	// 	send_data[send_length-2]= hexToString(sum2);
	// }else{
		let sum = 0;
		//计算645累加校验和
		for(var j = 0;j < send_length-2;j++)
		{
			sum =sum + parseInt(send_data[j],16);
		}
		sum = sum%256;
		send_data[send_length-2]= hexToString(sum);
	// }
	send_data[send_length-1]='16'
				
	//发送数据转为字符串
	for(var k = 0; k < send_length; k++)
	{
		send_stringdata=send_stringdata+send_data[k]
	}
	console.log('发送命令:'+send_stringdata);
	ecBLE.writeBLECharacteristicValue(send_stringdata, true)
	if(cc == '8f')
	{
		return
	}

	return new Promise((resolve, reject) => {
		ecBLE.onBLECharacteristicValueChange((str, strHex) => {
			recv_uart(strHex)
			console.log('设备回复:'+strHex);
			resolve(getApp().globalData.uart_645datalink)
		})
	})
}

//串口接收解析
export function recv_uart(rec)
{
	var uart_645datalink={
		id:'',
		cc:'',
		len:'',
		icode:'',
		data:[],
		uart_recvflag: 0,//接收正确645协议 0:未收到正确报文  1：收到正确报文
	}
	var recv_data=[],recv_length=0
	//去除fe,获得完整645协议报文
	var start = rec.indexOf('68')
	recv_length = rec.length/2;
	rec = rec.slice(start,rec.length)
	recv_length = rec.length/2;
	uart_645datalink.text = rec
	if(recv_length > 0)
	{
		//获取645报文，按照字节存储到数组
		for(var i=0 ; i<recv_length; i ++)
		{
			recv_data[i] = rec.substr(2*i,2);
		}

		let sum = 0;
		if(recv_data[0] == '68'&& recv_data[7] == '68')
		{
			//计算645累加校验和
			for(var j = 0;j < recv_length-2;j++)
			{
				sum =sum + parseInt(recv_data[j],16);
			}
			sum = sum%256;
						
			//验证校验和
			if(sum == parseInt(recv_data[recv_length-2],16))
			{
				//获取设备ID
				uart_645datalink.id= recv_data[6]+recv_data[5]+recv_data[4]+recv_data[3]+recv_data[2]+recv_data[1];
							
				//获取控制码
				uart_645datalink.cc = recv_data[8];
							
				//获取数据长度
				uart_645datalink.len = parseInt(recv_data[9],16)
							
				if(uart_645datalink.len >=2)
				{
					//获取标识编码
					uart_645datalink.icode = hexToString(parseInt(recv_data[11],16)-51)+hexToString(parseInt(recv_data[10],16)-51);
					//获取数据
					for(var k=0;k<uart_645datalink.len-2;k++)
					{
						uart_645datalink.data[k] = hexToString(parseInt(recv_data[12+k],16)-51);
					}
				}
				else{
					uart_645datalink.icode = ''
					//获取数据
					for(var k=0;k<uart_645datalink.len;k++)
					{
						uart_645datalink.data[k] = hexToString(parseInt(recv_data[10+k],16)-51);
					}
				}
				uart_645datalink.uart_recvflag = 1;
			}
			else{
				uart_645datalink.uart_recvflag = 0;
			}
									
		}
		else{
			uart_645datalink.uart_recvflag = 0;
		}
	}
	else{
		uart_645datalink.uart_recvflag = 0;
	}
	getApp().globalData.uart_645datalink = uart_645datalink
}