AD 采样实验.doc

AD .txt,_#include global.c void SystemInit();void Timer1Init(); void KickDog(); void SPI_Init(); void DA_OUT(unsigned CHANNEL,unsigned int RNG,unsigned int SPI_DATA);void AD_Sample(); void Que();int numled0=200; unsigned int t0=0,i=0,j=0; unsigned int RESULT_0=0,RESULT_8=0; unsigned int AD018,AD818,AD_0,AD_8,AD_FLAG=0;float AD_SIG0=0.0,AD_SIG8=0.0; main() SystemInit(); / MCRA=MCRA & 0xC0FF; /IOPB0-6IO PBDATDIR=0xFFC2; /LED=0 PBDATDIR=PBDATDIR |0x003D; /LED=1 SPI_Init(); DA_OUT(0,0,192); /2.475V,Voltage0-2550-3.3V DA_OUT(1,0,128); /1.65V,Voltage0-2550-3.3V DA_OUT(2,0,192); /2.475V,Voltage0-2550-3.3V DA_OUT(3,0,128); /1.65V,Voltage0-2550-3.3V Timer1Init(); / asm( CLRC INTM ); while(1) if(AD_FLAG=1) AD_FLAG=0; for(i=0;i18;i+) AD_Sample(); AD0i=RESULT_0; AD8i=RESULT_8; Que();/ void SystemInit() asm( SETCINTM );/* */asm( CLRC SXM );/* */ asm( CLRC CNF ); /* B0 on-chip DARAM*/asm( CLRC OVM ); /* */SCSR1=0x87FE; /* CLKOUT=20*2=40M */ /* ADC,EVA,EVB,CANSCI*/WDCR=0x006F;/* ,64 */ KickDog(); /* */ IFR=0xFFFF;/* */ IMR=0x0002;/* 2*/ void Timer1Init() EVAIMRA=0x0080;/ 1 EVAIFRA=0xFFFF;/ GPTCONA=0x0000;T1PR=2500;/ 1,0.4us*2500=1ms T1CNT=0;T1CON=0x144E; /, TPS40M/16=2.5M,T1 void SPI_Init() /SPI-DA MCRB=MCRB | 0x0014; /SPISIMO,SPICLK PBDATDIR=PBDATDIR | 0x0002; /CS_DA=1 SPICCR=0x004a; /11bit SPICTL=0x0006; / SPIBRR=0x0027; /1M,40M/40=1M SPICCR=SPICCR | 0x80; void DA_OUT(unsigned CHANNEL,unsigned int RNG,unsigned int SPI_DATA) unsigned char flag=0; SPITXBUF=(CHANNEL14)|(RNG13)|(SPI_DATA5) ; /bit10,9CHANNEL;bit8RNG while(1) flag=SPISTS&0x40; if(flag=0x40) break; SPIRXBUF=SPIRXBUF;/*/ PBDATDIR=PBDATDIR & 0xFFFD;/CS_DA=0, for(i=0;i6; MAXCONV=0x0000; /8 CHSELSEQ3=0x0008; ADCTRL2=0x0040; ADCTRL2=0x0020; while( (ADCTRL2&0x0010)=0x0010); asm( NOP ); asm( NOP ); RESULT_8=RESULT86; void Que() unsigned int MaxAD0=0; unsigned int MinAD0=AD00; unsigned int MaxAD8=0; unsigned int MinAD8=AD80; unsigned int tempAD0=0; unsigned int tempAD8=0; for(j=0;jMaxAD0) MaxAD0=AD0j; else if(AD0jMaxAD8) MaxAD8=AD8j; else if(AD8jMinAD8) MinAD8=AD8j; for(j=0;jAnimate void c_int2() /*1*/ if(PIVR!=0x27) asm( CLRC INTM );return;T1CNT=0; t0+;numled0-;if(numled0=0)numled0=200;if(PBDATDIR & 0x0001)=0x0001) PBDATDIR=PBDATDIR & 0xFFFE; /IOPB0=0;LED elsePBDATDIR=PBDATDIR |0x0101; /IOPB0=1;L