Generating audio frequencies using Timers of Microcontroller

[Suraj]

I want to generate 3 different audio frequencies on three pins of microcontroller using Timers. These  three frequencies needs to be generate using combinations of  DTMF frequencies

May i know how can i do this??? is it possible to do with ATMEGA32A???

I am using ATMEGA32A microcontroller with 16MHz crystal.

[Shrikant]

am assuming you are trying to make something using the dtmf frequencies. So how about using a dtmf encoder to generate the dtmf frequencies as well as a dtmf decoder to decode them into binary data.

A little more explanation on what you want to do would help

[AJISH ALFRED]

Hi,

You can generate audio frequencies using PWM with any microcontroller. Please share more details about your project.

[Suraj]

Can anyone tell me how to generate a simple square wave of 770Hz using ATMEGA32A microcontroller?????

[AJISH ALFRED]

Hi Suraj,

You can use timers. Refer the following project

engineersgarage.com/embedded/avr-microcontroller-projects/timer-waveform-generation-circuit

[Author]

Posts