# UNICENS Service ## Overview This service runs the "UNICENS Managament Library" which is responsible to start an INICnet network and configure well-known nodes and create audio/video routes. The respective network setup is described in on an XML file which is either automatically loaded after starting the service, or later on demand. ## Verbs | Name | Description | JSON Parameters | |--------------------|-----------------------------------------------|-------------------------------------------------------------------| | listconfig | List configuration files in a given directory.| *Request:* {"cfgpath": "/path/to/directory"} | | initialise | Initialize the service by loading a specific configuration. | *Request:* {"filename": "/path/to/file.xml"} | | subscribe | Subscribe to "node-availibility" event. | *Request:* { } | | subscriberx | Subscribe to "rx-message" event. | *Request:* { } | | sendmessage | Transmit a control message to a node. | *Request:* {"node" : 624, "msgid" : 123, "data" : "AAA="} | | writei2c | Write I2C data to a node. | *Request:* {"node" : 624, "data" : [7,3,255]} | Please note that it may not be required to call the "initialze" verb. The binding call automatically "initialize" when it is started. It automatically loads the configuration "data/config_multichannel_audio_kit.xml". This required that a compatible INICnet hardware is connected and the respective driver is initialized. ## Events | Name | Description | JSON Parameters | |--------------------|-----------------------------------------------|-------------------------------------------------------------------| | node-availibility | Availability of a node has changed. | *Response:* {"node" : 624, "available" : true} | | rx-message | Received a message from a node. | *Response:* {"node" : 624, "msgid" : 123, "data" : "AAA="} | ## Submodules This service depends on the UNICENS Management Library which is published on GitHub. See https://github.com/MicrochipTech/unicens for further information. ## Hardware AGL images are pre-configured to run with Microchip Slim Board Family. For furter information see https://github.com/MicrochipTech/unicens , section "Hardware". # Build and Run on Standard Linux Distributions ## Cloning Audio-Binding from Gerrit ``` git clone --recurse-submodules git clone https://gerrit.automotivelinux.org/gerrit/apps/agl-service-unicens cd agl-service-unicens ``` ## Install AFB-Daemon from OBS See chapter "Host Configuration" in AGL developers documentation. [Prerequisites](http://docs.automotivelinux.org/master/docs/devguides/en/dev/reference/host-configuration/docs/1_Prerequisites.html) [AGL Application Framework](http://docs.automotivelinux.org/master/docs/devguides/en/dev/reference/host-configuration/docs/2_AGL_Application_Framework.html) # Compile binding ``` source ~/.bashrc # or any other file where your have place your compilation preferences mkdir -p build cd build cmake -DCMAKE_INSTALL_PREFIX=$INSTALL_PREFIX .. make afb-daemon --workdir=.. --ldpaths=build --port=1234 --roothttp=./htdocs --token="" --verbose speaker-test -twav -D hw:ep01 -c 2 firefox http://localhost:1234 ``` # Archive ``` VERSION=0.1 GIT_TAG=master PKG_NAME=UNICENS-agent git archive --format=tar.gz --prefix=${PKG_NAME}-${VERSION}/ ${GIT_TAG} -o ${PKG_NAME}_${VERSION}.orig.tar.gz ``` # Local Source Debug with GDB Warning: technically AGL bindings are shared libraries loaded thought 'dlopen'. GDB supports source debug of dynamically loaded libraries, but user should be warn that the actual path to sharelib symbols is directly inherited from DLOPEN. As a result if you change your directory after binder start with --workdir=xxx then GDB will not find symbols anymore ``` Examples: # WORK when running in direct afb-daemon --workdir=.. --ldpaths=build --port=1234 --roothttp=./htdocs # FAIL when using GDB with warning: Could not load shared library .... gdb -args afb-daemon --workdir=.. --ldpaths=build --port=1234 --roothttp=./htdocs ... warning: Could not load shared library symbols for ./build/ucs2-afb/afb-ucs2.so. Do you need "set solib-search-path" or "set sysroot"? ... ``` To debug sharelib symbol path: start your binder under GDB. Then break your session after the binder has loaded its bindings. Finally use "info sharedlibrary" and check 'SymsRead'. If equal to 'No' then either you start GDB from the wrong relative directory, either you have to use 'set solib-search-path' to force the path. ``` gdb -args afb-daemon --workdir=.. --ldpaths=build --port=1234 --roothttp=./htdocs run ... NOTICE: API UNICENS added NOTICE: Waiting port=1234 rootdir=. NOTICE: Browser URL= http://localhost:1234 (hit Ctrl-C to break the execution) info sharedlibrary afb-* ``` # Running an debugging on a target ``` export RSYNC_TARGET=root@xx.xx.xx.xx export RSYNC_PREFIX=/opt # WARNING: installation directory should exist mkdir $RSYNC_TARGET cd $RSYNC_TARGET cmake -DRSYNC_TARGET=$RSYNC_TARGET -DRSYNC_PREFIX=$RSYNC_PREFIX .. make remote-target-populate ./build/target/start-${RSYNC_TARGET}.sh firefox http://localhost:1234 # WARNING: do not forget firewall if any ssh -tt ${RSYNC_TARGET} speaker-test -twav -D hw:ep01 -c 2 ``` Note: remote-target-populate will - create a script to remotely start the binder on the target in ./build/target/start-on-target-name.sh - create a gdbinit file to transparently debug remotely in source code with gdb -x ./build/target/gdb-on-target-name.ini - to run and debug directly from your IDE just configure the run and debug properties with the corresponding filename Note that Netbeans impose to set debug directory to ./build/pkgout or it won't find binding symbols for source debugging # Default Volume of Slim Amplifiers The binding currently supports two use cases for amplifiers. 1. Amplifiers are initialized with a default volume. The head unit uses software volume to change the volume of streaming data. 2. Amplifiers are initialized muted. The head unit uses hardware volume (e.g. HAL-MOST-UNICENS) to change the volume of amplifiers remotely. Use case 2 is the default use case. If you like to use this binding without hardware volume support please adopt the ```config_multichannel_audio_kit.xml``` as explained below. ``` ```