https://github.com/greatcattw/linkit7688_3.18.23_img_duo_mcu

For USB rescue
https://github.com/greatcattw/linkit7688_3.18.23_img_duo_mcu

brick image linkit7688 linkit7688duo mt7688 openwrt rescue

Last synced: 4 days ago
JSON representation

For USB rescue

• Host: GitHub
• URL: https://github.com/greatcattw/linkit7688_3.18.23_img_duo_mcu
• Owner: greatcattw
• Created: 2023-01-05T08:55:02.000Z (over 2 years ago)
• Default Branch: main
• Last Pushed: 2024-08-26T06:33:38.000Z (10 months ago)
• Last Synced: 2024-12-29T08:12:45.879Z (6 months ago)
• Topics: brick, image, linkit7688, linkit7688duo, mt7688, openwrt, rescue
• Homepage:
• Size: 43.1 MB
• Stars: 0
• Watchers: 1
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

        
# 3.18.23 image, update by USB

## For USB rescue  

base_image_0.94_3.18.23/lks7688.img  

dffa59d1650497662b7ea53ca41701bd  

This image seems be factory image for Linkit 7688 / 7688 Duo.  

This version is fully supportted by opkg, https://archive.openwrt.org/chaos_calmer/15.05.1/ramips/mt7688/.  

救磚   

## Caution  

### copy lks7688.img to a clean usb disk with FAT32 format.

### First boot, please wait 2minutes or run command of sync to wait all works is finished.

![pic](pic/demo.jpg)




![pic](pic/demo9.jpg)




Press WiFi key and power on linkit7688  

![pic](pic/demo1.png)




After 10 sec and release WiFi ky, linkit7688 finds the USB disk, file, and update itself.

![pic](pic/demo2.png)




Conneting type 2  

![pic](pic/demo7.jpg)




Conneting type 3  

![pic](pic/demo8.jpg)




# 3.18.23 image, update by mtd

mtd_update_3.18.23/LinkIt_Smart_7688_Firmware_v0.9.4.zip


extract and copy the lks7688.img to USB disk.   

Boot linkut7688 to linux  

Update by :  

## mtd -r write /tmp/run/mounted/sd1/lks7688.img firmware  

Thus, if you want use this image, you maybe need to update 3.18.109 by USB or you board is ok for booting to  linux,  

then update this image by command of mtd.  

# linkit7688_3.18.109 image

usb_update_3.18.109/lks7688.img 


For USB rescue

# linkit7688duo MCU rescue

You can find Caterina-smart7688.hex at arduino for linkit7688duo:  

C:\Users\greatcat\AppData\Roaming\Arduino15\packages\LinkIt\hardware\avr\0.1.8\bootloaders\caterina  




copy Caterina-smart7688.hex to linkit7688duo by scp  

and run the command as below:  

avrdude -p m32u4 -c linuxgpio -v -e -U flash:w:Caterina-smart7688.hex -U lock:w:0x0f:m  

# example of uci

ONLY for owrt=15.x / k=3.18.x 


## Setting of WiFi sta mode (WiFi to ethernet router)

uci set dhcp.lan.ignore='0' &&\ 


uci set network.lan.proto='static' &&\ 


uci set wireless.radio0.linkit_mode='' &&\ 


uci set wireless.ap.ssid='xxxxxxxxx' &&\ 


uci set wireless.ap.key='xxxxxxxxx' &&\ 


uci set wireless.ap.encryption='' &&\ 


uci set wireless.sta.disable=0 &&\ 


uci set wireless.sta.network='wan' &&\ 


uci set wireless.sta.ssid=greatcat3 &&\ 


uci set wireless.sta.key=123456789 &&\ 


uci set wireless.sta.encryption=psk2 &&\ 


uci commit 





wifi_mode sta 





Mt7688 as ethernet bridge. Browser -> PC -> ethernet -> mt7688 -> WiFi -> phone 


![pic](pic/router_bridge_list.png)


## Setting of WiFi AP mode

uci set dhcp.lan.ignore='0' &&\ 


uci set network.lan.proto='static' &&\ 


uci set wireless.radio0.linkit_mode='ap' &&\ 


uci set wireless.ap.ssid='LinkIt_Smart_7688_1C1497a' &&\ 


uci set wireless.ap.key='123456aaa' &&\ 


uci set wireless.ap.encryption='psk2' &&\ 


uci set wireless.sta.disable=1 &&\ 


uci set wireless.sta.network=''  &&\ 


uci set wireless.sta.ssid='xxxxxxxxx' &&\ 


uci set wireless.sta.key='xxxxxxxxx' &&\ 


uci set wireless.sta.encryption='psk2' &&\ 


uci commit





wifi_mode ap


## Setting of WiFi router mode

![pic](pic/wifi_router_structure.png)


uci set network.lan.type='' &&\ 


uci set dhcp.lan.ra_management='1' &&\ 


uci set network.lan._orig_ifname='ra0' &&\ 


uci set network.lan._orig_bridge='false' &&\ 


uci set network.lan.ifname='ra0' &&\ 


uci commit &&\ 


sleep 3 &&\ 


/etc/init.d/network restart 


 


uci set network.wan._orig_ifname='eth0' &&\ 


uci set network.wan._orig_bridge='false' &&\ 


uci set network.wan.ifname='eth0' &&\ 


uci commit &&\ 


sleep 3 &&\ 


/etc/init.d/network restart 


 


![pic](pic/wifi_router_structure_b.png)


MT7688 Ethernet is DHCP client mode.


MT7688 WiFi is AP mode and DHCP server mode.


PC#inside is able to ping PC#outside 192.168.123.121


PC#outside is able to ping mt7688 192.168.123.178





![pic](pic/wifi_router_a.png)


![pic](pic/wifi_router_b.png)


![pic](pic/wifi_router_c.png)


If the document help you, how about buy street cats a fish can ?