topic falsh during pwm init on 9S08AC60 in 8-bit Microcontrollers

falsh during pwm init on 9S08AC60

Lj_cyril — Tue, 30 Jun 2009 19:58:56 GMT

Hello evry body,

I have a trouble during the initialization phase of the timer

to generate PWM :

here is my code

//start up Timer 1
TPM1MOD=MAX_VALUE_PWM-2;
TPM1SC=0x08;

//startup timer channel
TPM1C0V=MAX_VALUE_PWM;
TPM1C2V=MAX_VALUE_PWM;
TPM1C3V=MAX_VALUE_PWM;

TPM1C0SC=0x24;
TPM1C2SC=0x24;
TPM1C3SC=0x24;

My probleme is that after this code i have one period at low level

even if i put 0 or max to TPM1CxV registers.

If you have any idea ...

Thanks for your help

Best regards

Paul

Re: falsh during pwm init on 9S08AC60

Quimney — Fri, 06 Aug 2010 00:50:53 GMT

Did you find it? I am having the same problem

Re: falsh during pwm init on 9S08AC60

giacomopetrini — Fri, 06 Aug 2010 21:27:31 GMT

Hi,

I don't have the datasheet here, but for sure

TPM1MOD has to be greater or equal than TPM1CxV.

Hope this help

Bye Jack