using the pwm's in pic18f2431-2331-4331-4431

[mystified]

'************************************************* ***************
'* Name : UNTITLED.BAS *
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' pwm out
ansel0=%00000000
ansel1=%00000000


portb=%00000000 'set port as output
trisb=%00000000 'set all portb pins as output

pr2=155 ' set to get 4khz out
ccp1con=%0001101 'set duty cycle ccp1con <4:5> bits
trisc=%00000000 ' make ccp pin output by clearning trisc<2> bit
t2con =%00000110 'turn on timer2, prescale =16
' set trmr2 prescale value and enable timer2 t2con
pause 1000

portb.6 = 1 'high output
portb.7=1 'high output


pause 2000
loop:
hpwm 0,127,10
hpwm 1,127,100
hpwm 2,127,10
hpwm 3,127,10
hpwm 4,127,100
hpwm 5,127,10
pause 1000
goto loop
end
I'm trying to get the pwm to work but the only pin that light a led is RB2( 6 and 7 work)
Who do I get the rest of them to work?

[luminas]

Read Darrel comment above.
You have to setup manually, or you can use 2 CCP HPWM only with PBP

[Darrel Taylor]

On these chips, I defer to Bruce's experience. (See post #4)

Bruce,

Is there really 2 normal CCP's and 4 other PWM's on these chips? Total of 6?
Or am I looking at the datasheet wrong?
The GIF image in post #4 shows 6 traces, but the program doesn't ues CCPCON?.

Haven't used one yet.
<br>

[Bruce]

DT,

The 28-pin version has 6 power control pwm outputs, and 2 standard CCP pwm outputs
for a total of 8. The 40-pin has 8 power control pwm outputs and the 2 standard CCP.

The only thing I don't like is they use the CCP1 & CCP2 pwm outputs as power control
pwm fault inputs.

You should grab a couple samples. The motion feedback module on these is awesome.

[Darrel Taylor]

WOW, that's a tough read.

But after a few hrs in the datasheet. Yeah, these are cool.

Got the (IC) Input Capture block: Very cool.
The (QEI) Quadrature Encoder Interface: OK sorta cool.
And up to 4 14-bit PWM's. (4 additional complimentary outputs) Not usable with CCP's at the same time.
Not as cool as I expected.

Still worth further investigation.
Samples on order. Thanks Bruce.
<br>

[rmteo]

How about a 28-pin PIC24FJxxGA002. 5 independent input capture AND 5 independent PWM's/OC (up to 16-bit resolution and 500kHZ). About $2 each (depending on flash from 16-64kB, 4kB or 8kB RAM). Plus lots of other stuff like 2 UART's, built-in RTCC, 2 SPI, 2 I2C, etc. Plus you can select which pins you want to use for most of the peripherals.

[mystified]

Thanks did not know that ccp and pwm0-5 are not the same pins that helped now how about setuo for timer 2.