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You dont need to turn it off, but you need to read the datasheet as you are using adc_clock_internal, which you shouldnt be.

You'd normally want 120 degree phases, not 90 degree....

Yeah thats what I meant Smile

Presumably you want the 3 pwms 90° out of phase, and I dont think that can be done.

Try it on a programmer you know is working, or try another pic.

You need to post a test program that will compile and run, exactly what it should do, and what the problem is. It looks like a bit of a sideways approach to a simple task to me.

Yeah its probably one time programmable, unless its a windowed JW(I think) device.

You can still get the 16c71 I believe, I chose a 16f88 to replace it in one of my projects, worked well, they're b ...

The 100 us delay, i just put it there to allow for the adc to stabalize after conversion, just in case. I'm not really sure if i need that there or not.

If you set the adc up properly then no you p ...

Would it work if I disabled the external interrupt as soon as I entered the isr and enabled it again while exiting the isr ?

The compiler does this automagically, the problem being the interrupt wo ...

Its because your 14 bit number say 0b11111111111111 = -1 when its put into your 16 bit var it becomes 0b0011111111111111 = 16383, so the sign bit 14 needs copying into 15 and 16 to make it -1 again

BYTE array[8]

...

void main(void){

int mynum = 0b00010101;
...
for int i =0; i<8; i++){
array[i] = mynum & 1;
mynum >>= 1;
}
...

I dont think those delays in the isr are really necessary are they?

a) To prevent re-entrancy, ie interrupting inside a delay_ms call, then calling it again.
b) Because they are reenabled after.

I think this is the same problem http://www.ccsinfo.com/forum/viewtop ...

Doh

Such a noob

Very Happy

LOL, I'm sure everyone makes those sort of mistakes, they are unspottable until some one points it out Smile

You could also try a slower spi speed, to rule that out.

Do you get the odd bad sample with the code fvm posted, you removed the part that drives cs high to signify the end of the data frame, but the datasheet is a little unclear if this is necessary or not ...