I have BeagleBoneBlack(revC) and this capacitive touchscreen from Chipsee (BBB-EXP-C): https://www.electronicsdatasheets.com/manufacturers/logic-supply/parts/bbbexpc
I would like to use speaker from Chipsee board.
Linux beaglebone 4.4.62-ti-r103 #1 SMP Fri May 12 22:14:44 UTC 2017 armv7l GNU/Linux
amixer sset ‘PCM’ 100%
Simple mixer control 'PCM',0 Capabilities: pvolume Playback channels: Front Left - Front Right Limits: Playback 0 - 127 Mono: Front Left: Playback 127 [100%] [0.00dB] Front Right: Playback 127 [100%] [0.00dB]
**** List of PLAYBACK Hardware Devices **** card 0: EVM [DA830 EVM], device 0: AIC3X tlv320aic3x-hifi-0  Subdevices: 1/1 Subdevice #0: subdevice #0
But it can be AUDIO OUT from BBB board, I don’t know.
Playing WAVE '/home/debian/sound.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo
… without any error
But I cannot hear any sound.
Thanks for any suggestion.