CCS :: View topic - ADC using interrupts

FAQ

Forum Help

Official CCS Support

Profile Log in to check your private messages Log in

CCS does not monitor this forum on a regular basis.

Please do not post bug reports on this forum. Send them to support@ccsinfo.com

ADC using interrupts

CCS Forum Index -> General CCS C Discussion

View previous topic :: View next topic

Author

Message

Pilot

Joined: 06 Jul 2004
Posts: 9

ADC using interrupts

Posted: Sun Aug 01, 2004 11:47 am

Hi,
I did 3 channel adc

Code:

#include "C:\PicPrj\CCSC\LCD_I2C_ADC\LCD_I2C_ADC.h"
#include <LCD.C>
// #int_AD

/*
AD_isr()
{

}
*/

#define ADCCONST 5.0/1024.0

void main()
{
int i;
float value1, value2, value3;

setup_adc_ports(AN0_AN1_AN2_AN3_AN4);
setup_adc(ADC_CLOCK_DIV_2);
setup_psp(PSP_DISABLED);
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1);
setup_timer_1(T1_DISABLED);
setup_timer_2(T2_DISABLED,0,1);
lcd_init();
// enable_interrupts(INT_AD);
// enable_interrupts(GLOBAL);

lcd_putc("\fLCD Ok!\n");

do {
delay_ms(100);
set_adc_channel( 0 );
value1 = Read_ADC()*ADCCONST;

delay_ms(100);
set_adc_channel( 1 );
value2 = Read_ADC()*ADCCONST;

delay_ms(100);
set_adc_channel( 2 );
value3 = Read_ADC()*ADCCONST;

printf(LCD_PUTC,"\n%4.2f %4.2f %4.2f",value3,value2,value1);

} while (TRUE);
}

but i want to use interrupt for ADC conversion and dont know how to do it with 3 channels? How i will know which channel is ready for read in the interrupt routine?

Thanks in advance. Ragards.

Pilot

Joined: 06 Jul 2004
Posts: 9

Re: ADC using interrupts

Posted: Sun Aug 01, 2004 2:51 pm

Pilot wrote:

Hi,
I did 3 channel adc
but i want to use interrupt for ADC conversion and dont know how to do it with 3 channels? How i will know which channel is ready for read in the interrupt routine?

Thanks in advance. Ragards.

I could do it on my self Very Happy

Code:

#include "C:\PicPrj\CCSC\LCD_I2C_ADC\LCD_I2C_ADC.h"
#include <LCD.C>

#define ADCCONST 5.0/1024

float value[3];

#int_AD
AD_isr()
{
static unsigned char ch=2;

value[ch] = Read_ADC(ADC_READ_ONLY)*ADCCONST;

printf(LCD_PUTC,"\n%u %4.2f %4.2f %4.2f",ch,value[2],value[1],value[0]);

if (ch==0) ch=3;
set_adc_channel(--ch);
Read_ADC(ADC_START_ONLY);
}

void main()
{
setup_adc_ports(AN0_AN1_AN2_AN3_AN4);
setup_adc(ADC_CLOCK_DIV_2);
setup_psp(PSP_DISABLED);
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1);
setup_timer_1(T1_DISABLED);
setup_timer_2(T2_DISABLED,0,1);
lcd_init();
enable_interrupts(INT_AD);
enable_interrupts(GLOBAL);

lcd_putc("\fLCD Ok!\n");

set_adc_channel( 2 );
Read_ADC(ADC_START_ONLY);;

do {
} while (TRUE);
}

Display posts from previous:

	CCS Forum Index -> General CCS C Discussion	All times are GMT - 6 Hours
Page 1 of 1

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum