X-Git-Url: https://gerrit.automotivelinux.org/gerrit/gitweb?a=blobdiff_plain;f=README.md;h=b74a6334527507ca9031713fd9146cb8612dc3db;hb=1f25b3a06ec284ee132bae8a81e183bb2a9ec819;hp=02c1789df65e8dc29410710fbff8430ef864087c;hpb=1fe55667142158af865372a8b9916581662286fe;p=apps%2Fagl-service-unicens.git

diff --git a/README.md b/README.md
index 02c1789..b74a633 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,14 @@
 ------------------------------------------------------------------------
-AGL-Unicens binding expose Unicens-V2 APIs through AGL framework
+AGL-UNICENS binding expose UNICENS-V2 APIs through AGL framework
 ------------------------------------------------------------------------
 
+Cloning Audio-Binding from Git
+-------------------------------------------------------
+
+```
+git clone --recurse-submodules https://github.com/iotbzh/unicens2-binding
+cd  unicens2-binding
+```
 
 AFB_daemon dependency on Standard Linux Distributions
 -------------------------------------------------------
@@ -21,7 +28,7 @@ AFB_daemon dependency on Standard Linux Distributions
     Ubuntu >= 16.4 libuuid-devel
       apt-get install cmake git electric-fence libsystemd-dev libssl-dev uuid-dev libasound2-dev libgcrypt20-dev libgnutls-dev libgnutls-dev libjson-c-dev libmagic-dev  libmxml-dev
 
-    libmicrohttpd>=0.9.54 (as today OpenSuse-42.2 or Ubuntu-.16.4 ship older versions)
+    libmicrohttpd>=0.9.55 (as today OpenSuse-42.2 or Ubuntu-.16.4 ship older versions)
     afb-daemon from AGL Gerrit git clone https://gerrit.automotivelinux.org/gerrit/src/app-framework-binder
 
 ```
@@ -42,12 +49,13 @@ AFB_daemon dependency on Standard Linux Distributions
     source ~/.bashrc
 
     # install LibMicroHttpd
-    wget https://ftp.gnu.org/gnu/libmicrohttpd/libmicrohttpd-0.9.54.tar.gz
-    tar -xzf libmicrohttpd-0.9.54.tar.gz
-    cd libmicrohttpd-0.9.54
-    ./configure --prefix=$INSTALL_PREFIX
+    LIB_MH_VERSION=0.9.55
+    wget https://ftp.gnu.org/gnu/libmicrohttpd/libmicrohttpd-${LIB_MH_VERSION}.tar.gz
+    tar -xzf libmicrohttpd-${LIB_MH_VERSION}.tar.gz
+    cd libmicrohttpd-${LIB_MH_VERSION}
+    ./configure --prefix=${INSTALL_PREFIX}
     make
-    make install-strip
+    sudo make install-strip
 
     # retrieve last AFB_daemon from AGL
     git clone https://gerrit.automotivelinux.org/gerrit/src/app-framework-binder
@@ -146,4 +154,19 @@ Note: remote-target-populate will
 
 Note that Netbeans impose to set debug directory to ./build/pkgout or it won't find binding symbols for source debugging
 
+# Default Volume of 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.
+
+```
+<!-- Register 7: Master Volume (Max Volume=07 00 00 and Min Volume=07 03 FF) -->
+<!--   - together with HAL-MOST-UNICENS binding use "07 03 FF" = muted after start -->
+<!--   - otherwise use "07 01 50" = default volume -->
+<I2CPortWrite Address="0x2A" Payload="07 03 FF"/>
+```