IOT Acsip AI7688H User Manual page 10

AI7688H User Manual
3.2 Update bootloader
USB drive must be in FAT file system or the file cannot be recognized by the AI7688H
development platform.
# Save the bootloader file (lks7688.ldr) in the root directory of a USB drive and name it
lks7688.ldr.
# Plug the USB drive to AI7688H.
# Press the WiFi and MPU (Reset) button at the same time, then release the MPU Reset
button but hold the WiFi button for at least 20 seconds.
# After 20 seconds Wi-Fi LED will turn on. Release WiFi button.
The board will start to read the bootloader (WiFi LED blinks fast) and perform the
bootloader upgrade process (Wi-Fi LED blinks slowly). It takes about 2 seconds to finish
the bootloader upgrade process
3.3 Build F/W from Source
The following operations are performed under a Ubuntu LTS 14.04.3 environment. For a
Windows or a Mac OS X host computer, you can install a VM for having the same
environment:
 Install prerequisite packages for building the firmware:
$ sudo apt-get install git g++ libncurses5-dev subversion libssl-dev gawk
libxml-parser-perl unzip
 Download OpenWrt CC source codes:
$ git clone git://git.openwrt.org/15.05/openwrt.git
 Prepare the default configuration file for feeds:
$ cd openwrt
$ cp feeds.conf.default feeds.conf
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