PWM Audio driver

[NewtoM]

Hello,

I just wanted to throw in that for a hobby project I created a PWM audio driver, with which one can play back 8-bit audio data very easily. Since it may be useful for others, too, I have uploaded the sources to https://nrf52-pwm-audio.sourceforge.io/, along with SES project files for nRF52832 and nRF52840. Plus, there you will also find a link to a video to see what you can do with the driver.

Cheers,
Tamas

[Styve Naoue]

Awesome, thanks Tamas.

I used Tamas's implementation as basis audio playback in my NRF52840 SoC based project and it works like a charm. Simple flexiblel and lightweight. This saved me a lot of time. I used a PAM3804 audio amplifier for prototyping and attenuated the noise using a 22uF cap in parallel with the PWM output pin and GND. This is ok for a 4 Ohm speaker. 
NOTE! Powering the PAM8304 with a separate power source is recommended to prevent power surges on the usb port.

[MQ_Question]

Hi Styve Naoue
I can't download the code on git -  git.code.sf.net/.../code nrf52-pwm-audio-code
How do you download it???

Can you show me?

[NewtoM]

Click download snapshot on this page: sourceforge.net/.../ .

[Styve Naoue]

Hello MQ_Question sorry for the late reply. Please browse to source code and git clone the repository to your pc. In the cloded folder you would fine the source code. 

All the best.

Styve