external interrupt + adc read

[saran]

Hi to everybody ,
i am new to this CCS compiler ,
I have a doubt in my program,
where i am using external interrupt and ADC reading operation.
where the interrupt occurs witihn a very duration .. say25 interrupts per second ,but the interrupt is working fine when it is executed seperately,but when i need to read the adc channel 0 for every 20ms , the interrupt is not executing , only the adc values are stored ,
can anyone help,...


#include <18F4455.h>
#device ADC=10
#fuses NOWDT,HS,NOPROTECT,PUT,NOLVP
#use delay(clock=10000000)
#use rs232(baud=9600,xmit=PIN_C6,rcv=PIN_C7)
static int16 a,b,v1;



#INT_EXT
void ext_isr(){
a++;
printf("\n\rpulses counted=%lu",a);
}
void main()
{
printf("program running\n\r");

while(1)
{
ext_int_edge(L_TO_H); // init interrupt triggering for button press
enable_interrupts(INT_EXT);// turn on interrupts
enable_interrupts(GLOBAL);//*/
setup_adc(ADC_CLOCK_INTERNAL);
setup_adc_ports(ALL_ANALOG);
set_adc_channel(0);
v1=read_adc();
printf("voltage=%lu\n\r",V1);
}
}

[Ttelmah]

First, use the 'code' buttons to post code. Makes it much easier to read!.


Now, some comments in the code:

[saran]

Thank u for ur reply
But stiil the same problem exists
Interrupt routine is not working properly

[ckielstra]