Introduction
This repository is named "OpenBK7231T_App", but now it's a multiplatform app, supporting build for 3 separate chips:
- BK7231T (WB3S, WB2S, etc)
- BK7231N (CB2S, etc)
- XR809 (XR3, etc)
To build for a given platform, just checkout first our version of SDK and then checkout this app repository into it, details later.
Building for BK7231T
Get the SDK repo: https://github.com/openshwprojects/OpenBK7231T Clone it to a folder, e.g. bk7231sdk/
Clone the app repo into bk7231sdk/apps/ - e.g. bk7231sdk\apps\openbk7231app
On Windows, start a cygwin prompt.
go to the SDK folder.
build using:
./b.sh
you can also do advanced build by build_app.sh:
./build_app.sh apps/<folder> <appname> <appversion>
e.g. ./build_app.sh apps/openbk7231app openbk7231app 1.0.0
flashing for BK7231T
UART (Windows only)
get BKwriter 1.60 exe
Use USB to TTL converter with 3.3V logic levels, like HW 597
connect the PC to TX1 and RX1 on the bk7231 (TX2 and RX2 are optional, only for log)
start flash in BKwriter 1.60 (select COM port, etc) then re-power the device (or reset with CEN by temporary connecting CEN to ground) until the flashing program continues, repeat if required.
UART (multiplatform method, Python required)
clone the repo https://github.com/OpenBekenIOT/hid_download_py
Use USB to TTL converter with 3.3V logic levels, like HW 597
connect the PC to TX1 and RX1 on the bk7231 (TX2 and RX2 are optional, only for log)
start flash using:
python uartprogram <sdk folder>\apps\<folder>\output\1.0.0\<appname>_UA_<appversion>.bin -d <port> -w
then re-power the device (or reset with CEN temporary connecting CEN to ground) until the flashing program continues, repeat if required.
e.g.
python uartprogram C:\DataNoBackup\tuya\tuya-iotos-embeded-sdk-wifi-ble-bk7231t\apps\my_alpha_demo\output\1.0.0\my_alpha_demo_UA_1.0.0.bin -d com4 -w
SPI
see https://github.com/OpenBekenIOT/hid_download_py/blob/master/SPIFlash.md
OTA
Once the firmware has been flashed for the first time, it can be flashed over wifi (note: change hardcoded firmware URL in new_http.c)
Setup a simple webserver to serve <sdk folder>\apps\<folder>\output\1.0.0\<appname>_<appversion>.rbl
Visit /ota - here start the flashing process.
First run
At first boot, if the new formware does not find your wifi SSID and password in the Tuya flash, it will start as an access point.
The access point will come up on 192.168.4.1, however some machines may not get an ip from it - you may need to configure your connecting for a staitc IP on that network, e.g. 192.168.4.10
Once you are connected and have an IP, go to http://192.168.4.1/index , select config then wifi, and setup your wifi.
After a reboot, the device should connect to your lan.
Building for BK7231N
Same as for BK7231T, but use BK7231N SDK: https://github.com/openshwprojects/OpenBK7231N
Flashing for BK7231N
BKwriter 1.60 doesn't work for BK7231N for me, in BK7231 mode it errors with "invalid CRC" and in BK7231N mode it fails to unprotect the device. For BK7231N, one should use:
https://github.com/OpenBekenIOT/hid_download_py
Flash BK7231N QIO binary, like that:
python uartprogram W:\GIT\OpenBK7231N\apps\OpenBK7231N_App\output\1.0.0\OpenBK7231N_app_QIO_1.0.0.bin --unprotect -d com10 -w --startaddr 0x0
Remember - QIO binary with --unprotect and --startaddr 0x0, this is for N chip, not for T.
Building for XR809
Get XR809 SDK: https://github.com/openshwprojects/OpenXR809
(to be continued)
Testing HTTP server on Windows
It is also possible to build a part of our App for Windows platform. It basically creates a Windows .exe for our HTTP server, so developers can create our configurator, etc, pages faster, without having any Tuya modules at hand. For building on Windows, use MSVC projects in the app directory.
Futher reading
For technical insights and generic SDK information related to Bekken and XRadio modules, please refer:
https://www.elektroda.com/rtvforum/topic3850712.html
https://www.elektroda.com/rtvforum/topic3866123.html
https://www.elektroda.com/rtvforum/topic3806769.html
Support project
If you want to support project, please donate at: https://www.paypal.com/paypalme/openshwprojects