CCP5 no output

[Hans Wedemeyer]

CCP1 works like a charm, CCP5 no o/p.
It all seems very simple... !

port G,4 as o/p Set_Tris_G(0b00000100);
C244: MOVLW 04
C246: MOVWF F98

setup_timer_2(T2_DIV_BY_1,96,1); // common for all CCP's

................... setup_ccp1(CCP_PWM);
C280: MOVLW B7
C282: ANDWF FB1,F
C284: BCF F8B.2
C286: MOVLW 0C
C288: MOVWF FBD
.................... setup_ccp5(CCP_PWM);
C28A: MOVLW B7
C28C: ANDWF FB1,F
C28E: BCF F8F.4
C290: MOVLW 0C
C292: MOVWF F70

.................... set_pwm1_duty ( 128 );
C29E: MOVLW 80
C2A0: MOVWF FBE
.................... set_pwm5_duty ( 128 );
C2A2: MOVWF F71

What else is there to take care of ?

Errata sheet does mentions a problem with CCP5...

What's the trick to making CCP5 work with PIC18F6720 ?

[Mark]

Just for grins, try using timer4 as the source for the PWM as see if that makes a difference. Take a look and Figure 16-1 in the datasheet if you need more info on how to set it up. What is the date code on the chips that you are using? I have a board here that uses a 6720 also. I'll give it a test to see if it fails for me too.

[Mark]

Okay, it works for me. Now I am running at 20MHz BUT a value of 128 did not work, 96 was the highest I could go.

[Guest]

[Mark]

It didn't work for me at first. Silly me put the set_tris function above main(). The compiler didn't error and of course the port wasn't setup as an output. Maybe I could use one of those vacations too! Where are we headed