pwm_1.C ???

gone83 · Joined: 29 Nov 2005 Posts: 1

HI there,

Can anybody post me an example how to generate PWM and to control the duty cycle using push button. And how is the connection looks like?
I'm using 16F877 and my switching frequency is 50-100kHz.

Thanks for the help.

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

This thread has a simple function that will wait for a button to be pushed.
http://www.ccsinfo.com/forum/viewtopic.php?t=19874

This thread shows how to setup PWM. Two channels are shown.
You only need one.
http://www.ccsinfo.com/forum/viewtopic.php?t=17729

Just create a "int8" variable called "pwm_duty", and initialize it to 0.
Then increment it every time the button is pushed. Then
call the set_pwm1_duty() function with the pwm_duty variable
as the parameter.