search

sle118 / squeezelite-esp32

ESP32 Music streaming based on Squeezelite, with support for multi-room sync, AirPlay, Bluetooth, Hardware buttons, display and more
1.27k stars 114 forks source link

Amplifier Control Issue? #253

Closed rjgrandy closed 1 year ago

rjgrandy commented 1 year ago

I am using an ESP32-WROVER and the setup works well. However there is some noise when idle through the speaker. My amplifier has a mute pin option which is mute=high logic level. I believe there is an option for amplifer control in this project where a GPIO can be set to high/low when the device is playing music and then set to the opposite when idle. I added the following line to "set_GPIO" in the NVS editor:

19=amp:0

This makes the gpio19 on the ESP32 go high when the device is idle, but I can never get it to go low, even if I try to play music.

Conversely if I use the option 19=amp:1, the gpio19 is always low no matter the state of the device.

Is there some option that I am not setting correctly?

sle118 commented 1 year ago

You should try to pull the gpio low or high depending on what you want to achieve, and depending on the configuration you set. The code doesn't use the ESP32 's internal pull up/down so you have to pull yourself.

rjgrandy commented 1 year ago

I can't explain why, but I erased everything, reflashed with the newest firmware and now it seems to be working.

I think the speaker noise is from my cheap usb speaker power supply. I have a nice non switching bench supply which doesn't seem to cause noise when I connect that up. However with this amp feature I can disable the amp and it goes silent when not used, even with the cheap power supply. Works great!