rotative encoder with pic16f877a

[john120]

Hi evry body I am trying to generate pwm and control the speed of my dc motor,but the speed is variable with rotative encoder,
can u plz help me with ccs c compiler codes.??

Thanks!!

 

[horace1]

for PWM see section 15.0 of the pic16f877a datasheet
https://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en010242

if the device does have have hardware QEI for the encoder you can use software QEI (use interrupt on change)
https://mbed.org/users/aberk/libraries/QEI/le4bkf/docs/QEI_8cpp_source.html