Merge pull request #44 from CreatorKit/dev

Merge dev to master

Author: nikhil-zinjurde-imgtec

README.md

@@ -16,3 +16,34 @@ Command                                         | Description
 ```$ ./scripts/feeds/install device-manager```  | Install only the package device-manager
 
 
+### Building CreatorKit packages using pre-compiled OpenWrt SDK for Ci40 (Marduk):
+
+1. First download the latest SDK from https://downloads.creatordev.io/pistachio/marduk/ e.g. say  OpenWrt-SDK-0.9.4-pistachio-marduk_gcc-5.2.0_musl-1.1.11.Linux-x86_64.tar.bz2 is the latest SDK available.
+2. Extract the SDK and go to the extracted folder.
+
+          tar -xjvf OpenWrt-SDK-0.9.4-pistachio-marduk_gcc-5.2.0_musl-1.1.11.Linux-x86_64.tar.bz2
+          cd OpenWrt-SDK-0.9.4-pistachio-marduk_gcc-5.2.0_musl-1.1.11.Linux-x86_64.tar.bz2
+3. Check whether the feeds.conf.default file has an entry of https://github.com/CreatorKit/openwrt-ckt-feeds.git
+4. Update all the feeds and install the required one from openwrt-ckt-feeds. e.g. if you want to install just button-led-controller then
+
+          ./scripts/feeds update -a
+          ./scripts/feeds install button-led-controller
+5. You can build just the specific package as
+
+          make package/button-led-controller/compile
+6. Once the package is built successfully, it's .ipk files are generated in the bin/pistachio directory.
+7. To copy the .ipk files on to the Ci40 board which is running the CreatorDev/openwrt image, you can either scp them or first copy them on a USB stick, connect the stick to the board, mount it and copy the files in /tmp folder.
+8. You can install the ipk by using 
+
+          root@OpenWrt:/# opkg install /tmp/button-led-controller_HEAD-1_pistachio.ipk
+9. However, please note that if a package requires some dependent packages, then those need to be installed first, only then a package can be installed using opkg. Since SDK is a stripped down version, Package.gz is not getting generated and opkg update would fail.
+10. e.g. if you want change something in say "button-led-controller", then it would be good to install the default "button-led-controller" using opkg on the Vanila CreatorDev/Openwrt image first. i.e.
+
+          root@OpenWrt:/# opkg update
+          root@OpenWrt:/# opkg install button-led-controller
+11. Now,to install your own version of "button-led-controller", you can remove the default version (it will keep intact the dependent packages though) and install your version.
+
+          root@OpenWrt:/# opkg remove
+          root@OpenWrt:/# opkg install /tmp/button-led-controller_HEAD-1_pistachio.ipk
+You can follow this approach for building any other packages using OpenWrt SDK.
+12. For more details about how to use openwrt sdk please refer https://wiki.openwrt.org/doc/howto/obtain.firmware.sdk