客戶host讀寫ctpm數(shù)據(jù)說明

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 觸摸坐標(biāo)（x，y）中，x和y均用16bit，其中高8位，低8位在后。包頭211122222222221 216bitTPModuleHostByte1122222222221數(shù)據(jù)包前25個(gè)數(shù)據(jù)的異或（xor）為,用于幫助Host檢驗(yàn)這一個(gè)數(shù)據(jù)包的正確性. void ucharif(!SendByte(0x70))//sendslaveaddress，bus{ //noack}if(!SendByte(0xF9))//send{ //noack}if(!SendByte(0x71))//sendslaveaddress，bus{ //noack}for(i=0;i<{ //receivedata }}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讀兩個(gè)字節(jié)，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（當(dāng)前寄存器值） voidI2C_ReadRegister_WorkMode(ucharregis{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={ //receivedata //ack}}//值：G_Buffer[0]isdata，G_Buffer[1]isvoidSPI_ReadRegister_WorkMode(ucharregis{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其中：ECC（0xfc）xor（寄存器地址+0x00）xor（設(shè)定值） voidI2C_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}}voidSPI_WriteRegister_WorkMode(uchar ddr,uchar{unsignedchari;unsignedchartemp=0;G_Buffer[0]=0xfc; //G_Buffer:globlevariabletemp=temp^0xFC; //calECCG_Buffer[1]=regisddrtemp=temp^(regisddr);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，此時(shí)CTPM返回寄存器值和ECC。HostSlaveSlave首字節(jié)STARTDAT=8’hF3； voidI2C_ReadRegister_FactoryMode(ucharregis{ucharif //sendslaveaddress，bus{ //noack}if(!SendByte(0xF3))//sendcommand,factory{ //noack} ddr+0x80))//sendregister{ //noack}if(!SendByte(0x71))//sendslaveaddress，bus{ //noack}{ //receivedata //ack}}//值：G_Buffer[0]isdata，G_Buffer[1]isvoidSPI_ReadRegister_FactoryMode(ucharregis{unsignedcharG_Buffer[0]=0xf3;//G_Buffer:globlevariableG_Buffer[1]=regisddr+0x80;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其中：ECC（0xfc）xor（寄存器地址+0x00）xor（設(shè)定值） voidWriteRegister_FactoryMode(ucharregisddr,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}}voidSPI_WriteRegister_FactoryMode(ucharregisddr,uchar{unsignedchari;unsignedchartemp=0;G_Buffer[0]=0xf3; //G_Buffer:globlevariabletemp=temp^0xf3; //calECCG_Buffer[1]=regisddrtemp=temp^(regisddr);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字節(jié)：STARTDAT=8’hF5；最后一個(gè)字節(jié)是ECC，等于前面所有數(shù)據(jù)的異或結(jié)果。 //參數(shù)：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}{{ //receivedata }}}//參數(shù)：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;SPIF=0;NSSMD0=for(delay=0;delay<100;