I’m trying to get a USB class audio device to work with the mangOH red platform. I’m configured the OTG usb using the commands below to enable audio.
Request: microcom -E /dev/ttyAT
Config Index: 1
Config Type: 1 (Generic)
Interface bitmask: 0009010D (diag,nmea,modem,rmnet0,audio,ecm)
AT Command Source (page 78)
Once I reboot and connect the device via the USB OTG port (CF3 USB) I ran the lsusb command. The result is below.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 003: ID 08bb:2704 Texas Instruments Audio Codec
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
So far it seems the device is being recognized correctly. In order to test the device I’m using one of the audio tests in the legato framework. The project I’m using is in the link below.
Once I installed the audioPlaybackRec application I execute the following command below. Despite the command running properly I don’t get any audio out of my USB device. I’ve tested this device on a Windows PC and get audio out no problem.
app runProc audioPlaybackRec --exe=audioPlaybackRecTest – PB USB /usr/share/sounds/male.wav
I’ve also tested this command using the call below and audio is successfully output on the mangOH red audio jack.
app runProc audioPlaybackRec --exe=audioPlaybackRecTest – PB MIC /usr/share/sounds/male.wav
Any guidance on how I can get external USB audio to output would be greatly appreciated.