I am sorry to say that I think the Linux process for uploading this RTL8720 firmware is broken.
I have been looking at similar posts related to:
Cannot initialize ESP-AT Lib
WIO Terminal: Networking not working
And some others and it seems to boil down to the firmware update not working. Apparently the Windows process works!
I have run this process 3 times and seen the result:
stuart@stuart-Alienware-17-R3:~/Arduino/temp/bin$ ./amebad_flash_tool flash -d /home/stuart/Arduino/temp/flash --port /dev/ttyACM0
copy img to workspace…
Flashing…
All images are sent successfully!
Image tool closed!
done!
However I cannot get the WIFI to connect. I uploaded the Scanning Wi-Fi Network Example Code, after my 1st upgrade and if fails as follows (I have removed blank lines):
Cannot initialize ESP-AT Lib!
[E][esp_event_loop.c:99] at_unified_cb(): at_unified evt: 4
[E][WiFiGeneric.cpp:477] mode(): Could not set mode! -1
[E][esp_event_loop.c:99] at_unified_cb(): at_unified evt: 4
Setup done
scan start
I ran the erase and flash again from scratch as recommended in the forum but this did NOT fix the issue.
I ran the erase and flash again but still did NOT fix the issue.
Please can someone go through the Linux command line process and fix the issues, or at least amend the WIKI to get this working. This is really frustrating.
Not everybody has accces to a Windows PC. I will have to wait until I have access to one…
Regards
Stuart