某电容屏相关和驱动代码客户host读写ctpm数据说明

Project ref Release ThiscontainsinformationproprietarytoFocalTechSystems,.,andmaynotbereproduced,disclosedorusedinwholeorpartwithouttheexpresswrittenpermissionofFocalTechSystems,.Copyright©2010,FocalTechSystems,AllrightsR3-B4-A,SouthArea,ShenzhenHi-TechIndustrialPark,Shenzhen,Gungdong,P.R.ZIP:518057FERevision VersionListof Author+ First 概 附录A:CTPM寄存器说明(工作模式下 触摸坐标（x，y）中，x和y均用16bit，其中高8位，低8位在后。包头211122222222221 216bitTPModuleHostByte1122222222221数据包前25个数据的异或（xor）为,用于帮助Host检验这一个数据包的正确性. //MCU:C8051F321void ucharif(!SendByte(0x70))//sendslaveaddress，bus{ //noack}if(!SendByte(0xF9))//send{ //noack}if(!SendByte(0x71))//sendslaveaddress，bus{ //noack}for(i=0;i<{ }}void unsignedshorti=0;unsignedcharj=0;unsignedchardelay=0;//Step1:SendcommandNSSMD0=0; //SPI0slaveselectmode0for(delay=0;delay<2;delay++);SPIF=SPI0DAT=0xf9; //touchdatacommandwhile(!SPIF);j=SPI0DAT;SPIF=0;NSSMD0=for(delay=0;delay<100;//Step2:readtouchfor(i=0;i<TOUCH_BUFFER_SIZE;i++)//{NSSMD0=0; //SPI0slaveselectmode0for(delay=0;delay<1;delay++);SPIF=SPI0DAT=while(SPIF==0);=SPI0DAT;for(delay=0;delay<1;NSSMD0=1; //SPI0slaveselectmode1for(delay=0;delay<50;delay++);}}HostSlaveSlave寄存器地址读两个字节，即是Slave返回的寄存器值和ECC值。其中：ECC（0xfc）xor（寄存器地址+0x40）xor（当前寄存器值） //MCU:C8051F321//值：RWRegister_Buffer[0]isdata，RWRegister_Buffer[1]isvoidI2C_ReadRegister_WorkMode(uchar {ucharif(!SendByte(0x70))//sendslaveaddress，bus{ //noack}if(!SendByte(0xFC))//sendcommand,work{ //noack} //sendregister{ //noack}if(!SendByte(0x71))//sendslaveaddress，bus{ //noack}for(i=0;i<RWRegisterBufferSize-2;i++)//RWRegisterBufferSize={ //ack}}//MCU:C8051F321//值：G_Buffer[0]isdata，G_Buffer[1]isvoidSPI_ReadRegister_WorkMode(uchar {unsignedcharG_Buffer[0]=0xfc;//G_Buffer:globlevariableG_Buffer[1]=regis for(i=0;i<2;{NSSMD0=0; //CSsetlowfor(delay=0;delay<30;delay++);SPIF=0;SPI0DAT=G_Buffer[i];G_Buffer[i]=SPI0DAT;for(delay=0;delay<30;delay++);NSSMD0=1; //CSsethighfor(delay=0;delay<50;delay++);}}HostHostHost寄存器地址其中：ECC（0xfc）xor（寄存器地址+0x00）xor（设定值） 工作模式下SPI写寄存器流程//MCU:C8051F321voidI2C_WriteRegister_WorkMode(uchar ddr,uchar{uchartemp=0;if(!SendByte(0x70))//sendslaveaddress，bus{ //noack}if(!SendByte(0xFC))//sendcommand,factory{ //noack}temp= ddr))//sendregister{ //noack}temp=temp^(regis if(!SendByte(dat))//senddata{ //noack}temp=temp^dat; if(!SendByte(temp))//{ //noack}}//MCU:C8051F321voidSPI_WriteRegister_WorkMode(uchar ddr,uchar{unsignedchari;unsignedchartemp=0;G_Buffer[0]=0xfc; //G_Buffer:globlevariabletemp=temp^0xFC; //calECCG_Buffer[1]=regis temp=temp^(regis G_Buffer[2]=dat;temp=temp^dat; G_Buffer[3]=temp;for(i=0;i<4;{NSSMD0=0; //CSsetlowfor(delay=0;delay<30;delay++);SPIF=0;SPI0DAT=G_Buffer[i];G_Buffer[i]=SPI0DAT;for(delay=0;delay<30;delay++);NSSMD0=1; //CSsethighfor(delay=0;delay<50;delay++);}}存器地址，此时CTPM返回寄存器值和ECC。HostSlaveSlave寄存器地址首字节STARTDAT=8’hF3； 工厂模式下SPI读寄存器流程//MCU:C8051F321//值：RWRegister_Buffer[0]isdata，RWRegister_Buffer[1]isvoidI2C_ReadRegister_FactoryMode(uchar {ucharif //sendslaveaddress，bus{ //noack}if(!SendByte(0xF3))//sendcommand,factory{ //noack} ddr+0x80))//sendregister{ //noack}if(!SendByte(0x71))//sendslaveaddress，bus{ //noack}for(i=0;i<RWRegisterBufferSize-{ //ack}}//MCU:C8051F321//值：G_Buffer[0]isdata，G_Buffer[1]isvoidSPI_ReadRegister_FactoryMode(uchar {unsignedcharG_Buffer[0]=0xf3;//G_Buffer:globlevariableG_Buffer[1]=regis for(i=0;i<2;{NSSMD0=0; //CSsetlowfor(delay=0;delay<30;delay++);SPIF=0;SPI0DAT=G_Buffer[i];G_Buffer[i]=SPI0DAT;for(delay=0;delay<30;delay++);NSSMD0=1; //CSsethighfor(delay=0;delay<50;delay++);}}ECC。HostHostHost寄存器地址其中：ECC（0xfc）xor（寄存器地址+0x00）xor（设定值） //MCU:C8051F321voidWriteRegister_FactoryMode(uchar ddr,uchar{uchartemp=0;if(!SendByte(0x70))//sendslaveaddress，bus{ //noack}if(!SendByte(0xF3))//sendcommand,factory{ //noack}temp= ddr))//sendregister{ //noack}temp=temp^(regis if(!SendByte(dat))//senddata{ //noack}temp=temp^dat; if(!SendByte(temp))//{ //noack}}//MCU:C8051F321voidSPI_WriteRegister_FactoryMode(uchar ddr,uchar{unsignedchari;unsignedchartemp=0;G_Buffer[0]=0xf3; //G_Buffer:globlevariabletemp=temp^0xf3; //calECCG_Buffer[1]=regis temp=temp^(regis G_Buffer[2]=dat;temp=temp^dat; G_Buffer[3]=temp;for(i=0;i<4;{NSSMD0=0; //CSsetlowfor(delay=0;delay<30;delay++);SPIF=0;SPI0DAT=G_Buffer[i];G_Buffer[i]=SPI0DAT;for(delay=0;delay<30;delay++);NSSMD0=1; //CSsethighfor(delay=0;delay<50;delay++);}}0x0c0x0d0x0eTPSlaveECC。HostHostSlaveSlave字节：STARTDAT=8’hF5；最后一个字节是ECC，等于前面所有数据的异或结果。 //MCU:C8051F321//参数：mode:0x0cworkatf1 0x0dworkatf2 0x0eworkatf3 rowaddr:linenumbers,from0to(RX_NUM- //databuffer://lastbyteisvoidI2C_ReadRawData(ucharmode,ucharrowaddr,uchar{uchardatasize=(total_RX_NUM<<1)+1;ReadRegister_WorkMode(0x3C);//readstateregester0x3cif(RWRegister_Buffer[0]==0x01)//ifatworkmode{WriteRegister_WorkMode(0x3C,0x03);//fromworkmodetofactory} //sendslaveaddress，bus{ //noack} //send{ //noack} //sendmode{ //noack}if(!SendByte(rowaddr))//send{ //noack} //sendslaveaddress，bus{ //noack}{{ }}}//参数：mode:0x0cworkatf1 0x0dworkatf2 0x0eworkatf3 rowaddr:linenumbers,from0to(RX_NUM- //databuffer://lastbyteisvoidSPI_ReadRawData(ucharmode,ucharrowaddr,uchar unsignedshorti=0;unsignedcharj=0;unsignedchardelay=0;unsignedchardatasize=0;datasize=(total_RX_NUM<<1)+//Step1:SendcommandNSSMD0=0; //SPI0slaveselectmode0for(delay=0;delay<2;delay++);SPIF=SPI0DAT=0xf5; //touchdatacommandwhile(!SPIF);j=SPI0DAT;SPI