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authorAlex J Lennon <ajlennon@dynamicdevices.co.uk>2015-10-22 15:52:57 +0100
committerAndrei Gherzan <andrei@gherzan.ro>2015-10-24 21:45:56 +0200
commit7cff0a0a9e0c88c75217f4dfdbf769d40cd6def2 (patch)
tree9832b82859383555c48025f6d4e4232e5c886a3f
parent50a7710718631fc79f0140b743a5ed9f6cfdf8f3 (diff)
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README: Add section on audio routing
See http://redmine.gherzan.com/issues/55 Signed-off-by: Alex J Lennon <ajlennon@dynamicdevices.co.uk>
-rw-r--r--README36
1 files changed, 31 insertions, 5 deletions
diff --git a/README b/README
index e32de3a..e16dee9 100644
--- a/README
+++ b/README
@@ -199,8 +199,34 @@ able to compile omxplayer you will need to whiteflag the commercial license
adding to you local.conf:
LICENSE_FLAGS_WHITELIST = "commercial"
+4. Board Configuration
+======================
-4. Source code and mirrors
+4.A. Audio Routing
+==================
+To load audio driver
+
+ modprobe snd-bcm2835
+
+To test audio playback
+
+ e.g. aplay test.wav
+
+Note that without HDMI connected this emits audio from the 3.5in jack connector
+as expected. However With an HDMI display connected there is no audio output from
+the jack connector.
+
+To force the audio routing via the 3.5in jack connector use
+
+ amixer cset numid=3 1
+
+Options to amixer cset are:
+
+ 0=auto
+ 1=headphones
+ 2=hdmi
+
+5. Source code and mirrors
==========================
Main repo:
@@ -214,10 +240,10 @@ Bitbucket mirror:
https://bitbucket.org/agherzan/meta-raspberrypi
-5. Contributing
+6. Contributing
===============
-5.A. Mailing list
+6.A. Mailing list
=================
The main communication tool we use is a mailing list:
yocto@yoctoproject.org
@@ -241,7 +267,7 @@ When sending patches to mailing list, please use something like:
git send-email --to yocto@yoctoproject.org <generated patch>
-5.B. Redmine
+6.B. Redmine
============
In order to manage and trace the meta-raspberrypi issues, we use redmine:
http://redmine.gherzan.ro/projects/meta-raspberrypi
@@ -255,7 +281,7 @@ for a bug:
[Bug #13]
-6. Maintainers
+7. Maintainers
==============
Andrei Gherzan <andrei at gherzan.ro>