Comments (3)
dceejay
commented on May 29, 2024
The buzzer uses the underlying gpio command to setup hardware pwm for that pin (1). The current parameters are
gpio mode 1 pwm
gpio pwm-ms
gpio pwm 1 511
gpio pwmc 100
I guess one of those messes with a register that affects aplay...
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dceejay
commented on May 29, 2024
Apparently the hardware PWM does "share" the registers with the audio circuitry so it's an either or situation. If anyone can find a way to reset the external audio drivers on closing Node-RED please let us know.
eg see - http://93.93.128.176/forums/viewtopic.php?t=76898&p=548793
I'll add a comment to the Info.
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andysc
commented on May 29, 2024
thanks for doing the research :)
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