ZigFisher
commented
5 years ago Good day. At the moment there is no WiFi support in our firmware, but we are working on it. As for the buttons, RF transmitters, microphone, speaker, and everything else - this is very specific and necessarily requires the presence of the device from the developer.
I bought the smart doorbell: https://www.dx.com/p/b30-wireless-wi-fi-intercom-video-doorbell-b10-doorbell-receiver-set-2093215#.XJZ9J0Mo-Wg
It is working very well, but it is connecting to a cloud service in China, I would like to connect locally without transmission of audio/video via the Internet.
What I found so far is that it is based on the Hi3518EV200 chip.
I think this in an article about the development (use Google translate): https://blog.csdn.net/qq_42448904/article/details/81178754
For WIFI it is using the FN-Link Hi1131s / 3131A-S.
Besides of that there is a MCU STM8L
See drawing in original Chinese post. The author (maybe developer?) is: qq_115369006 @ blog.csdn.net
I can't create an account at blog.csdn.net so I can't contact the developer or find more info at csdn.
I was successful in finding the Rx- Tx-pins at the PCB. After connecting via a serial-USB cable I can see the original booting process: it runs 'Huawei LiteOS' as operating system and I will end up at the prompt. I can also break the booting so I get the U-boot prompt and load via the SD-card (MMC) your chaos_calmer release from 2019.02.17 (openwrt-hisilicon-armv5tej-3.4.35-initramfs-uImage) ! Great!
But Wifi is not working and I also don't see any effect of pressing the doorbell. Normally it should send a 433Mhz signal and maybe also a notification to the OS.
Could you maybe help to integrate FN-Link Hi1131s / 3131A-S in the build?
Hope you can give me some hints how to integrate wifi and the MCU STM8L ?
Thanks in advance!