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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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 Posted: Mon Nov 20, 2006 12:30 pm |
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Your test program is too complicated. Try this simple program
and see if it works.
| Code: |
#include <18F6527.h>
#device adc=10
#fuses HS, NOWDT, PUT ,BROWNOUT, NOLVP
#use delay(clock=10000000)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7, ERRORS)
//===================================
void main()
{
int16 result;
setup_adc_ports(ALL_ANALOG);
setup_adc(ADC_CLOCK_DIV_8);
set_adc_channel(0);
delay_us(20);
while(1)
{
result = read_adc();
printf("%lx \n\r",result);
delay_ms(500);
}
} |
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Ttelmah
Guest
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| Posted: Mon Nov 20, 2006 3:30 pm |
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You have a huge amount of stuff in your code, that has been remarked out. Remove this, and repost, _showing the declarations of the variables used to hold the ADC valuea_. Also use the 'code' buttons to post.
Also, consider using an array, or struture to allow the whole thing to be done with one loop. Something like:
| Code: |
structure values {
int16 threeDC;
int16 fiveVDC;
int16 fiveVRef;
int16 fortyeightVDC;
int16 PPDDetect;
int16 OpAmpPwr;
}
union {
int16 readings[6];
stucture values ADC;
} VIN;
void read_volts(void) {
int8 ctr;
for (ctr=0;ctr<7;ctr++) {
set_adc_channel(ctr);
delay_us(20);
VIN.readings[ctr]=read_adc();
}
}
//Then in your main:
while (true) {
read_volts();
printf("Three V line is at %d\n\r",VIN.ADC.threeDC);
delay_ms(500);
}
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Just showing how this would work for one value (but reading six).
A lot smaller, simpler to read etc. etc..
Best Wishes |
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bill conley
Guest
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| Posted: Mon Nov 20, 2006 9:17 pm |
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Thanks Guys...I think I have it working. It wasn't the firmware, it was the hardware.
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