MT7688 Firmware

Build from source

Document

• from MTK: Build the Firmware from Source
• from OpenWrt: OpenWrt build system – Usage

 

• how to enable wm8960 in openwrt
• Adventures in building OpenWrt for linkit7688
• OpenWRT Developer Guide
• ubus (OpenWrt micro bus architecture)

Environment

• 用MBP跑VirtualBox (ubuntu 14.04)，跑了三小時還沒跑完...找台電腦灌native Linux較實在!
• Host: 14.04.3 LTS

Source

• LinkIt Smart 7688 firmware v0.9.4
• OpenWrt Linux distribution (Chaos Calmer 15.05.1)

firmware$ git clone git://git.openwrt.org/15.05/openwrt.gitbin/ramips/openwrt-ramips-mt7688-LinkIt7688-squashfs-sysupgrade.bin

bootloader$ git clone https://github.com/MediaTek-Labs/linkit-smart-uboot.git

kernel packagebin/ramips/packages/base/

Buttons (MPU, WiFi buttons) 的使用

F/w upgrade — USB

1. 按住WiFi button
2. 按一下MPU button後放開
3. 等WiFi燈熄掉後 (or 按住至少 5sec後)再放開WiFi button

Reset MPU

按一下MPU button

切換到AP mode

按住WiFi button 至少5 sec後再放開

http://192.168.100.1/

Cross-compile C/C++

• Openwrt-SDK-LInkit
• package  (source code)
• helloworld
• Makefile
• src
• Makefile
• helloworld.c
• build_dir (executable binary)
• target-mipsel_24kec+dsp_uClibc-0.9.33.2
• helloworld
• helloworld
• bin  (install package)
• ramips
• package
• base
• helloworld_1.0.0-1_ramips_24kec.ipk

在 Openwrt-SDK-LInkit 目錄下> make V=99

執行executable binary
產生的executable binary在 build_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/helloworld 下

確認產生的executable binary格式
> cd build_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/helloworld
> file helloworld

將executable binary upload到Linkit Smart中> scp helloworld root@mylinkit.local:/root

登入Linkit Smart> ssh root@mylinkit.local> .helloworld

安裝package> cd bin/ramips/package/base> scp helloworld_1.0.0-1_ramips_24kec.ipk  root@mylinkit.local:/root

登入Linkit Smart> ssh root@mylinkit.local> opkg install