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| author |   Mark Farrugia <mark.farrugia@fiberdyne.com.au> | 2018-10-09 10:10:49 +1100 |
|---|---|---|
| committer | Mark Farrugia <mark.farrugia@fiberdyne.com.au> | 2018-10-26 17:27:47 +1100 |
| commit | 964987727646a7139a3d259830f25a739937fa73 (patch) | |
| tree | b7d30653b4b91b86615b5cc84cb94e6994dc569f /docs/3.Usage.md | |
| parent | cd128853f392960ceec44476f37f0d569a680db5 (diff) | |
Add docs: Add architecture diagram for 4A
Tidy other docs
Signed-off-by: Mark Farrugia <mark.farrugia@fiberdyne.com.au>
Diffstat (limited to 'docs/3.Usage.md')
| -rw-r--r-- | docs/3.Usage.md | 30 |
1 files changed, 24 insertions, 6 deletions
diff --git a/docs/3.Usage.md b/docs/3.Usage.md index df56cf1..d65d50d 100644 --- a/docs/3.Usage.md +++ b/docs/3.Usage.md @@ -75,13 +75,13 @@ First, verify the kernel supports the use of configfs. fgrep configfs /proc/filesystems ``` -the expected output is: +The expected output is: ``` nodev configfs ``` -Once confirmed, we can mount the configfs at the conventional point: +Once confirmed, we can mount the `configfs` filesystem at the conventional point: ```sh # Check configfs is mounted on the system @@ -89,7 +89,7 @@ mkdir -p /config mount -t configfs none /config ``` -Finally, we can configure AVIRT: +Finally, we can configure AVIRT, for example: ```sh # Set up each of the cards channels @@ -115,7 +115,25 @@ echo "1">/config/avirt/streams/sealed Alternatively, the test script at `scripts/test_configfs.sh` can be used. -### Note: +The user-space library, [libavirt](https://github.com/fiberdyne/libavirt) can be used to interact with the configfs interface. Please refer to the README in libavirt for further details. + +<a name="checking-avirt" /> + +## 3. Checking AVIRT Loaded Correctly -A simplified helper library, libavirt, is available [here](https://github.com/fiberdyne/libavirt). -Please refer to the readme in libavirt for further details. +We can see the newly created streams by using the `aplay` utility. For example, the device list might look a little like this: + +```sh +aplay -l +... +card 2: avirt [avirt], device 0: multimedia [multimedia] + Subdevices: 1/1 + Subdevice #0: subdevice #0 +card 2: avirt [avirt], device 1: navigation [navigation] + Subdevices: 1/1 + Subdevice #0: subdevice #0 +card 2: avirt [avirt], device 2: emergency [emergency] + Subdevices: 1/1 + Subdevice #0: subdevice #0 +... +``` |