Triangular wave generator with PIC16F877A

[jean12]

Hello,I am trying to generate a traingular wave with PIC16F877A and output this and be variable in duty cycle,can you please help me with that?

I want to set a number of digits in EEPROM and be accessed and output be sent to the port C where the potentiometer can be used for varying the duty cycle of this signal.

Not only the potentiometer,but also an encoder can be used for that purpose.!!

Thank you to all of you!!

 

[horace1]

you could use a DAC or a DDS chip to generate a Triangular wave, e.g.
https://www.analog.com/library/analogdialogue/archives/38-08/dds.html

a suitable encoder which gives a QEI output could be
https://uk.rs-online.com/web/p/prod...&istBid=tztx&gclid=CLWErMiuvcACFc7HtAodwgUARA

 

[udayan92]

As you said,you can use the digits in EEPROM(Or use a for loop) to be sent to port C,where you can attach a digital to analog converter.That,or you can use the inbuilt digital to analog converter within the microcontroller and generate the analog output(If the said analog output pin is multi purpose,you will have demultiplex the output accordingly.)The potentiometer should work fine.

 

[amayilsamy]

You can generate with easily Op-amp integrator circuit..

 

[jean12]

Hello,could you help me with coding?I know how to do so with OP-amp but I don`t want to use op amps.!!

Thanks