Thanks James, I didn't see the OUT bit in PWMxCON. This is probably my=20
best bet at this point, though I am noting your other suggestions which=20
will come in handy..

Jim

> Having looked at the datasheet (40001819A.pdf), your options would
> appear to be;
>
> 1.  read bit 5 "OUT" of PWMxCON, or;
>
> 2.  read a GPIO corresponding to the pin (TRIS configured as output,
> but that doesn't stop you reading), or;
>
> 3.  read TMR2 and compare with PWMxDCH:L as you suggest, or;
>
> 4.  use the 16-bit PWM peripheral instead, and use the PWM interrupts,
> or;
>
> 5.  use the 16-bit PWM peripheral and read PWMOUT bits.
>
> On Wed, Feb 22, 2017 at 03:17:22AM -0500, Jim Ruxton wrote:
>> I am wanting to know the state of a PWM output ( 1 or 0 ) when I
>> receive a specific interrupt. Assuming I am using TMR2 for my 10 bit
>> PWM clock.  Can I check whether TMR2 is between 0 and the 10 bit
>> value of PWMxDCH:PWMxDCL<7:6> to determine if the PWM output is on
>> or not when I get the interrupt (within a few cycles)? Otherwise I
>> could AND my interrupt signal with my PWM signal before sending it
>> to the PIC but would prefer not to add more hardware.  Is there a
>> more reliable way than reading the Timer value to determine the PWM
>> state, I couldn't find a flag bit that gives this info? I am using a
>> PIC16F1778 .
>> Thanks.
>>
>> Jim

--=20
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.