init_adc12.c

diPIC 系列程序

/**********************************************************************
*
* FileName:        init_ADC.c
* Dependencies:    p33FJ256GP710.h
* Processor:       dsPIC33F
*
* REVISION HISTORY:
*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* Author    wzl        Date      08.07.16
*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

**********************************************************************/

#include "p33FJ256GP710.h"
#include "variable_def.h"
#include "variable_dec.h"

void Init_ADC1( void )
{
	/* set port configuration here */ 
	AD1PCFGL = 0xFFFF;
	AD1PCFGH = 0xFFFF;		
 	AD1PCFGHbits.PCFG26 = 0;         // ensure AN4/RB4 is analog 
 	AD1PCFGHbits.PCFG27 = 0;         // ensure AN5/RB5 is analog 
 	AD1PCFGHbits.PCFG28 = 0;
 	
 	/* set channel scanning here, burst mode sampling and convert*/
	AD1CON1bits.FORM = 1;           // date output format,signed integer;
	AD1CON1bits.SSRC = 2;           // sample clock source,GP timer starts conversinon;
	AD1CON1bits.ASAM = 1;           // ADC sample control,sample begins immediately after conversion;
	AD1CON1bits.AD12B = 1;          // 12-bit ADC operation;
	AD1CON1bits.ADDMABM = 1;        // DMA buffers are written in thr order of conversion;
 	
 	AD1CON2bits.ALTS = 0;           // Always uses channel input selects for Sample A
 	AD1CON2bits.SMPI = 2;           // Increments the DMA address or generates interrupt after completion of every 3rd
                                    // sample/conversion operation 
    AD1CON2bits.CSCNA = 1;          // Scan inputs for CH0+ during Sample A bit
    AD1CON2bits.VCFG = 0;           // internal base
    
    AD1CON3bits.ADCS = 12;
    AD1CON3bits.SAMC = 5;
    AD1CON3bits.ADRC = 0;
    
    AD1CHS0 = 0x0000;
    
    AD1CSSH = 0x1c00;
    AD1CSSL = 0;
    
    IFS0bits.AD1IF = 0;             // clear the A/D interrupt flag bit
    IEC0bits.AD1IE = 0;             // do not enable A/D interrupt
    
    AD1CON1bits.ADON = 1;
    
}



void Init_ADC2( void )
{
	/* set port configuration here */ 
	AD2PCFGL = 0xFFFF;		
 	AD2PCFGLbits.PCFG8 = 0;         // ensure AN4/RB4 is analog 
 	AD2PCFGLbits.PCFG9 = 0;         // ensure AN5/RB5 is analog 
 	AD2PCFGLbits.PCFG10 = 0;
 	
 	/* set channel scanning here, burst mode sampling and convert*/
	AD2CON1bits.FORM = 1;           // date output format,signed integer;
	AD2CON1bits.SSRC = 2;           // sample clock source,GP timer starts conversinon;
	AD2CON1bits.ASAM = 1;           // ADC sample control,sample begins immediately after conversion;
	AD2CON1bits.AD12B = 1;          // 12-bit ADC operation;
	AD2CON1bits.ADDMABM = 1;        // DMA buffers are written in thr order of conversion;
 	
 	AD2CON2bits.ALTS = 0;           // Always uses channel input selects for Sample A
 	AD2CON2bits.SMPI = 2;           // Increments the DMA address or generates interrupt after completion of every 3rd
                                    // sample/conversion operation 
    AD2CON2bits.CSCNA = 1;          // Scan inputs for CH0+ during Sample A bit
    AD2CON2bits.VCFG = 0;           // internal base
    
    AD2CON3bits.ADCS = 12;
    AD2CON3bits.SAMC = 5;
    AD2CON3bits.ADRC = 0;
    
    AD2CHS0 = 0x0000;
    
    AD2CSSL = 0x0E00;
    
    IFS1bits.AD2IF = 0;             // clear the A/D interrupt flag bit
    IEC1bits.AD2IE = 0;             // do not enable A/D interrupt
    
    AD2CON1bits.ADON = 1;
    
}


void Init_Timer3(void)
{
    T3CONbits.TCS = 0;
    T3CONbits.TGATE = 1;
    
    TMR3 = 0;
    PR3 = 200;
    
    IFS0bits.T3IF = 0;
    IEC0bits.T3IE = 0;
    
    T3CONbits.TON = 1;
}

void Init_Timer5(void)
{
    T5CONbits.TCS = 0;
    T5CONbits.TGATE = 1;
    
    TMR5 = 0;
    PR5 = 200;
    
    IFS1bits.T5IF = 0;
    IEC1bits.T5IE = 0;
    
    T5CONbits.TON = 1;
}

/*
void Init_DMA0(void)
{
    DMA0CON = 0x0000;
    DMA0CONbits.AMODE = 2;
    
    DMA0PAD = (int)&ADC1BUF0;
    DMA0CNT = ADCNT - 1;
    DMA0STA = __builtin_dmaoffset(&ADC1Buffer1[0]);
    DMA0CONbits.CHEN = 1;        
}

void Init_DMA1(void)
{
    DMA1CON = 0x0000;
    DMA1CONbits.AMODE = 2;
    
    DMA1PAD = (int)&ADC2BUF0;
    DMA1CNT = ADCNT - 1;
    DMA1STA = __builtin_dmaoffset(&ADC2Buffer2[0]);
    DMA1CONbits.CHEN = 1;        
}
*/
//void __attribute__((interrupt__)) _DMA0Interrupt(void)
//{
    
//}