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| author |   Tobias Jahnke <tjahnk@users.noreply.github.com> | 2017-08-11 13:52:51 +0200 |
|---|---|---|
| committer | Tobias Jahnke <tjahnk@users.noreply.github.com> | 2017-08-16 16:00:50 +0200 |
| commit | 4aec17e1d42c1b0f3f628342bf24120299a0c819 (patch) | |
| tree | 6ca6433369231ee6fc06140c93ae2d046391209b /HAL-afb/HAL_MOST_UNICENS/README.md | |
| parent | abe141f1d4dd46fe2bda6cc56db0ceaa964d87b1 (diff) | |
Adds readme for HAL MOST UNICENS
Diffstat (limited to 'HAL-afb/HAL_MOST_UNICENS/README.md')
| -rw-r--r-- | HAL-afb/HAL_MOST_UNICENS/README.md | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/HAL-afb/HAL_MOST_UNICENS/README.md b/HAL-afb/HAL_MOST_UNICENS/README.md new file mode 100644 index 0000000..a0cc190 --- /dev/null +++ b/HAL-afb/HAL_MOST_UNICENS/README.md @@ -0,0 +1,51 @@ + +# HAL for MOST Sound Card + +## Introduction +This Hardware Abstraction Layer (HAL) is intended to control MOST audio via +standard ALSA mixer controls. Therefore the HAL add's controls to the MOST sound +card. Modification of the mixer controls is mapped to control commands which are +send to MOST nodes. + +The HAL requires to access the UNICENS V2 binding which is setting up the MOST +network and the MOST node. + +Please check the following required components: +* MOST Linux Driver +* User must be member of "audio" group +* UNICENS V2 binding +* [K2L MOST150 Audio 5.1 Kit](https://www.k2l.de/products/74/MOST150%20Audio%205.1%20Kit/) + +## Possible Modifications +Check if you need to adapt the default path for UNICENS configuration, e.g. +``` +#define XML_CONFIG_PATH "/opt/AGL/unicens2-binding/config_multichannel_audio_kit.xml" +``` + +Check if you need to adapt the name of the MOST sound card. +``` +#define ALSA_CARD_NAME "Microchip MOST:1" +``` + +You can check your MOST sound card name by calling ```aplay -l```, e.g. +``` +aplay -l +**** List of PLAYBACK Hardware Devices **** +card 0: PCH [HDA Intel PCH], device 0: 92HD90BXX Analog [92HD90BXX Analog] + Subdevices: 1/1 + Subdevice #0: subdevice #0 +card 1: ep016ch [Microchip MOST:1], device 0: ep01-6ch [] + Subdevices: 1/1 + Subdevice #0: subdevice #0 +card 2: ep022ch [Microchip MOST:2], device 0: ep02-2ch [] + Subdevices: 1/1 + Subdevice #0: subdevice #0 + +``` +Choose the first sound card with 6 channels, e.g. if you see ```ep01-6ch``` just +take ```Microchip MOST:1```. + +If you get messed up with card enumeration the following action may help: +- Unplug your MOST USB hardware from target +- Call ```sudo rm /var/lib/alsa/asound.state``` +- Connect MOST USB hardware after reboot or restart of ALSA |