MikroElektronika Forum

hi everyone,

iam doing a project on pic 16f877a iam almost done with it just one problem left and that is that i cant increment or decrement my Frequence i know how to set up my Frq lvl an that is

PWM1_init();

so i can set my freq but i want to do incrment or decrement in it with two push buttons like iam changing the Duty here just shown blow

if(RD0_Bit) {
if(duty<=255) {
Delay_ms(10);
Work++;
PWM1_Set_Duty(duty);
}
}
if(RD1_Bit) {
if(duty>=1) {
Delay_ms(10);
Work--;
PWM1_Set_Duty(duty);
}
}


ya just like iam changing the duty i wana change the Frequence

Check out the PWM section of your datasheet.

Register PR2 sets the period (and thus frequency) of PWM outputs.

Put numbers (unsigned char) from 0 to 255 into the PR2 register to change frequency while PWM is running.

Hi,

Also, please check the PWM example in the Examples folder of the compiler.

Regards,
Filip.

This example does not work to making increment or decrement,Thanks

Hi,

I believe I have answered you here :
http://www.mikroe.com/forum/viewtopic.p ... 56#p209356

Regards,
Filip.