安卓串口调试记录(包括串口通信底层知识点)

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//在js中代码
        this.printLog('开发串口发送数据');
        Utils.sendAngleCommandProductBwh527Data();
        Utils.sendAngleCommandProductListener();

        //倾角
        setTimeout(()=>{
        Utils.sendAngleCommandProductBwh527Data();

        },100);

//在RCTUtilsModule文件中代码；
    @ReactMethod
    public void sendAngleCommandProductBwh527Data(){  //发送数据

        byte command[]=new byte[]{0x77,0x04,0x00,0x04,0x08}; 

        serialPortUtils.sendSerialPortByte(command);

    }
    final int  adressAngleRs485=0x00;  //本地485地址；
    @ReactMethod
    public void sendAngleCommandProductListener(){  //开监听器；

        serialPortUtils.setOnDataReceiveListener(new             
   SerialPortUtils.OnDataReceiveListener() {
            @Override
            public void onDataReceive(byte[] buffer, int size) {
                Log.d(TAG, "进入数据监听事件中" + changeTool.ByteArrToHex(buffer));
                StringBuffer sBuffer = new StringBuffer();

                //适用于BWH526--圆形串口TTL输出
                if((buffer[2]==adressAngleRs485)){
                    if((buffer[0]==0x77)&&(buffer[1]==0x10)){
                        switch (buffer[3]){
                            case (byte)0x84:  {
                                //x轴角度
                                sBuffer.append(changeTool.Byte2Hex(buffer[4]));
                                sBuffer.append(changeTool.Byte2Hex(buffer[5]));
                                sBuffer.append(changeTool.Byte2Hex(buffer[6]));
                                sBuffer.append(changeTool.Byte2Hex(buffer[7]));
                                if((buffer[4]&0x10)==0x10){
                                    sBuffer.setCharAt(0,'-');
                                }else{
                                    sBuffer.setCharAt(0,' ');
                                }
                                sBuffer.insert(4,'.');
                                Log.d(TAG, "倾角：x轴角度：" + sBuffer);
                                //y轴角度
                                sBuffer.delete(0,sBuffer.length());
                                sBuffer.append(changeTool.Byte2Hex(buffer[8]));
                                sBuffer.append(changeTool.Byte2Hex(buffer[9]));
                                sBuffer.append(changeTool.Byte2Hex(buffer[10]));
                                sBuffer.append(changeTool.Byte2Hex(buffer[11]));
                                if((buffer[8]&0x10)==0x10){
                                    sBuffer.setCharAt(0,'-');
                                }else{
                                    sBuffer.setCharAt(0,' ');
                                }
                                sBuffer.insert(4,'.');
                                Log.d(TAG, "倾角：y轴角度：" + sBuffer);
                                sBuffer.delete(0,sBuffer.length());

                                break;
                            }
                            default: ;
                        }

                    }
                }
                //适用于BWM427--RS485输出
                if((buffer[0]==adressAngleRs485)&&(buffer[1]==0x03)){

                    if((buffer[2]==0x04)){
                        int temp =(buffer[3]<<8)|buffer[4];
                        float tempx=(temp-10000)/100;
                        sBuffer.append(tempx);
                        Log.d(TAG, "倾角：x轴角度：" +sBuffer);
                        sBuffer.delete(0,sBuffer.length());

                        temp =(buffer[5]<<8)|buffer[6];
                        float tempy=(temp-10000)/100;
                        sBuffer.append(tempy);
                        Log.d(TAG, "倾角：x轴角度：" + sBuffer);
                        sBuffer.delete(0,sBuffer.length());
                        
                    }

                }




            }
        });
    }

    //字节数组转转hex字符串
    //-------------------------------------------------------
    //1字节转2个Hex字符
    public static String Byte2Hex(Byte inByte) {
        return String.format("%02x", new Object[]{inByte}).toUpperCase();
    }

    //-------------------------------------------------------
    //字节数组转转hex字符串
    public static String ByteArrToHex(byte[] inBytArr) {
        StringBuilder strBuilder = new StringBuilder();
        for (byte valueOf : inBytArr) {
            strBuilder.append(Byte2Hex(Byte.valueOf(valueOf)));
            strBuilder.append(" ");
        }
        return strBuilder.toString();
    }