dsp281x_adc.c

基于双向DC-DC变换器

#include "DSP281x_Device.h"     // DSP281x Headerfile Include File
#include "DSP281x_Examples.h"   // DSP281x Examples Include File

#define ADC_usDELAY  8000L
#define ADC_usDELAY2 20L

void InitAdc(void)
{
	
	extern void DSP28x_usDelay(Uint32 Count);
	AdcRegs.ADCTRL3.bit.ADCBGRFDN = 0x3;	// Power up bandgap/reference circuitry
	DELAY_US(ADC_usDELAY);                  // Delay before powering up rest of ADC
	AdcRegs.ADCTRL3.bit.ADCPWDN = 1;		// Power up rest of ADC
	DELAY_US(ADC_usDELAY2);             // Delay after powering up ADC
	
	
	
/*	AdcRegs.ADCTRL1.bit.RESET=1;
	AdcRegs.ADCTRL2.bit.RST_SEQ1=1;
	
	
	AdcRegs.ADCTRL3.bit.SMODE_SEL=0;//顺序采样模式
    AdcRegs.ADCTRL1.bit.SEQ_CASC=1;//采用级联模式
   
    AdcRegs.ADCMAXCONV.all = 0x02;  // 转换3个通道
    //AdcRegs.ADCCHSELSEQ1.all= 0x3210; // Setup ADCINA3 as 1st SEQ1 conv.
    //AdcRegs.ADCCHSELSEQ2.all= 0x7654;
   
    AdcRegs.ADCCHSELSEQ1.bit.CONV00=0x0; //采样引脚ADCINA0
    AdcRegs.ADCCHSELSEQ1.bit.CONV01=0x1; //采样引脚ADCINA1
    AdcRegs.ADCCHSELSEQ1.bit.CONV02=0x2; //采样引脚ADCINA2
   
   AdcRegs.ADCTRL2.bit.EVA_SOC_SEQ1 = 1;  // Enable EVASOC to start SEQ1 SEQ1被EVA的触发源启动
   AdcRegs.ADCTRL2.bit.INT_ENA_SEQ1 = 1;  // Enable SEQ1 interrupt (every EOS)使能中断
   AdcRegs.ADCTRL1.bit.CONT_RUN=0;      //启动／停止模式
   AdcRegs.ADCTRL1.bit.ACQ_PS = 0x04;   //采样窗长度
   
   AdcRegs.ADCTRL1.bit.CPS = 0;     //不分频　ADCCLK＝15MHZ（67ns)

   AdcRegs.ADCTRL3.bit.ADCCLKPS = 0x0;     //HSPCLK不分频　ADCLKPS=HSPCLK=15MHZ

*/	
}