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Sorry, I was mistaken when I said #DEVICE ADC = 10 was in the 16F690.h file.

Actually, it is in the main.h file. The main.h file contains the following:
#include <16F690.h>
#device adc=10 ...

Or put it in the 16F690.h file were the #device adc = 8 is. Change the 8 to 10. Works.

Thanks for the suggestion.
Boyce

Compiler PCW 4.104 Device 16F690

How is #DEVICE ADC = 10 applied?

When I put it in my code, the error
"Can not change device type this far into the code"
pops up.

What can I ...

Hello

Maybe try to switch off the pwm module. It work for me in the same situation. The macro you get for free:-)

#define Pwm1(x) output_bit(PIN_C5,x)

setup_ccp1(CCP_OFF ...

Compiler 4.104 16F690

I am trying to find a way to use one of the ADC input pins as a reference voltage input for the other ADC input pins. I don't see how to do it.

This did not work:

se ...

Here's the logic analyzer screenshot of what I see. There is an occasional
long pulse at the start of the "ramp up" section. I don't ever see the
pulses that you see.
http://img502.imag ...

Here's the logic analyzer screenshot of what I see. There is an occasional
long pulse at the start of the "ramp up" section. I don't ever see the
pulses that you see.
http://img502.imag ...

Can you clarify exactly what is wrong with the waveform ?
I installed vs. 4.104. I programmed your posted code into the 16F690
on my breadboard. I'm looking at pins C5 (pwm signal) and C0 (marker) ...

Try disconnecting the stepper from the PIC. Run the PIC and see if you still have the problem with PORTC.5.
Rohit

The PORTC.5 problem exists when the stepper driver is disconnected.

It also d ...

Post the main.h file, so the program can be compiled.

#include <16F690.h>
#device adc=8

#FUSES NOWDT //No Watch Dog Timer
#FUSES HS //High speed Osc ...

You didn't provide any theory. Why are you setting bits C2-C5 ?
What are the connections to the stepper motor ? Post a schematic
of your project. Post a link to the data sheet for the stepper m ...

From what you have said, the "0x05" can be replaced with plain ol' "5". Yes, 0x05 is the hexadecimal representation of 5. You could even replace it with 0b00000101 (binary). Note t ...

...So whether I write bcf 0x03,5 or bcf 0x83,5 it doesn't matter, since the MSBit of 0x83 is 'ignored' anyway. However you should be technically fastidious and write bcf 0x83,5. :razz:
Rohit

Ok, ...

Thanks for your response.

Think 5 or 6 lead UNIPOLAR motors...

4 PHASES:
A (A), NOT A (NA), B (B), and NOT B (NB)

PWM+ = RISING PULSE PWM

PWM- = FALLING PULSE PWM

1* TROUBLE, REASO ...

Compiler PCW 4.104 16F690

The code is supposed to generate drive signals for a 5 wire stepping motor and almost works.

The statements:

if(C==1)
{
set_pwm1_duty(q); ...