?? adc.c
字號:
#include<reg51.h>
#include"Config.h"
#include"IOCfg.c"
#include"TimeDLY.h"
#include"ADC.h"
//從SPI總線讀2字節(16bits)數據函數:
// SPI_Read_Two()
INT16 SPI_Read_Two(void)
{
INT16 temp;
INT8U i;
ADCSetSCLK(0);
for(i=0;i<16;i++)
{
ADCSetSCLK(1);
nNop(2);
temp <<= 1;
if(ADCDATA) temp++;
ADCSetSCLK(0);
nNop(2);
}
return(temp);
}
//外部非連續數據時鐘,讀取上一次轉換數據且無同步信號模式函數:
// EXCLKSample_Pre()
INT16 EXCLKSample_Pre(void)
{
INT16 temp;
ADCSetEXINT(1);
ADCSetRC(1);
ADCSetRC(0);
while(ADCBUSY);
nNop(2);
ADCSetRC(1);
temp = SPI_Read_Two();
return(temp);
}
//外部非連續數據時鐘,讀取當前次轉換數據且無同步信號模式函數:
// EXCLKSample_Now()
INT16 EXCLKSample_Now(void)
{
INT16 temp;
ADCSetEXINT(1);
ADCSetRC(1);
ADCSetRC(0);
while(ADCBUSY);
nNop(1);
ADCSetRC(1);
while(!ADCBUSY);
temp = SPI_Read_Two();
return(temp);
}
//外部非連續數據時鐘,讀取上一次轉換數據且有同步信號模式函數:
// EXCLKSample_Pre_Syn()
INT16 EXCLKSample_Pre_Syn(void)
{
INT16 temp;
ADCSetEXINT(1);
ADCSetSCLK(0);
ADCSetRC(1);
ADCSetRC(0);
ADCSetSCLK(1);
while(ADCBUSY);
ADCSetSCLK(0);
nNop(1);
ADCSetRC(1);
ADCSetSCLK(1);
while(!ADCSYN);
ADCSetSCLK(0);
temp = SPI_Read_Two();
return(temp);
}
//外部非連續數據時鐘,讀取當前次轉換數據且有同步信號模式函數:
// EXCLKSample_Now_Syn()
INT16 EXCLKSample_Now_Syn(void)
{
INT16 temp;
ADCSetEXINT(1);
ADCSetSCLK(0);
ADCSetRC(1);
ADCSetRC(0);
ADCSetSCLK(1);
while(ADCBUSY);
ADCSetSCLK(0);
nNop(1);
ADCSetRC(1);
while(!ADCBUSY);
ADCSetSCLK(1);
while(!ADCSYN);
ADCSetSCLK(0);
temp = SPI_Read_Two();
return(temp);
}
//指定方式采樣以及讀取數據函數:nSample()
INT16 nSample(INT8U smode, INT8U sbtc)
{
INT16 temp;
ADCSetPWRD(PWOP);
switch(sbtc)
{
case BTC : ADCSetSBTC(BTC); break;
case SBIN : ADCSetSBTC(SBIN); break;
default : break;
}
switch(smode)
{
case EXDCLK_RDPRE : temp = EXCLKSample_Pre(); break;
case EXDCLK_RDNOW : temp = EXCLKSample_Now(); break;
case EXDCLK_RDPRE_SYN : temp = EXCLKSample_Pre_Syn(); break;
case EXDCLK_RDNOW_SYN : temp = EXCLKSample_Now_Syn(); break;
default : break;
}
return(temp);
}
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