PWM problems on atmega328

boeseturbo · Joined: 23 Jul 2007 Posts: 65

Hi,

I tried to use PWM (timer0) on atmega328. I didnt got any output on pwm. If I toggle the pin directly (toggle outputpin) I can change the level from low to high and high to low. But no PWM on this pin Sad

$crystal = 8000000
$regfile = "m328def.dat"
$baud = 38400
$hwstack = 300
$swstack = 300
$framesize = 300

Enable Interrupts

Config Pind.5 = Output

Config Timer0 = Pwm , Prescale = 1 , Compare B Pwm = Clear Up

Enable Timer0
Start Timer0

pwm0b =128

pind.5 keeps still low Sad

I used before atmega168 and this code worked well Sad

Has anybody an idea?

Cheers

(BASCOM-AVR version : 2.0.7.7 )

Duval JP · Joined: 22 Jun 2004 Posts: 1197 Location: France

hello,
Are you sure your fuse bits are the same setting ?

JP

Visovian · Joined: 31 Oct 2007 Posts: 584 Location: Czech

Bascom 2075 demo

Config Timer0 = Pwm , Prescale = 1 , Compare B Pwm = Clear Up
For mega328 this Config sets uncorrect values:
TCCR0A = 0
TCCR0B = 1

Try to set manually

boeseturbo · Joined: 23 Jul 2007 Posts: 65

thank you very much . will try it on monday and will report .

cheers

boeseturbo · Joined: 23 Jul 2007 Posts: 65

just tested it... it works... Thank you for your help!

Cheers