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pulkin / micropython

MicroPython implementation on Ai-Thinker GPRS module A9 (RDA8955)
https://micropython.org
MIT License
103 stars 30 forks source link

Firmware burner #60

Open toglader opened 4 years ago

toglader commented 4 years ago

Since coolwatcher is hard to get working in major Linux distributions (because no support) and whole SDK for A9G seems to be disappeared from internet, it would be great if a firmware burner would be implemented for initial installation of micropython for A9G.

pulkin commented 4 years ago

Yeah, that'd be awesome and I was also thinking about having something similar to esptool.py. The first step is to dump and reverse-engineer the communication protocol.

edvm commented 3 years ago

@pulkin @toglader would be an option to ask Expressif for documentation about this? I sent them an email: image

pulkin commented 3 years ago

Sure, go ahead.

bokolob commented 3 years ago

Is there a connection between espressive and A9G? I thought a9g is produced by unisoc (RDA chips) and assembled by AiThinker. Am I wrong?

edvm commented 3 years ago

@bokolob Whops! (I don't know) would be great to confirm that.

Expressif answered the email I sent them asking for documentation about how to write a firmware into the A9G and the answer was:

1.Esptool is used to burn firmware into ESP8266, please refer to the below link: https://github.com/espressif/esptool

2.You mentioned that you want to implement a tool similar to Esptool, I hope the serial protocol can be useful to you. https://github.com/espressif/esptool/wiki/Serial-Protocol

It was strange for me that asking for "how to write firmware into the A9G" the answer was "To burn a firmware into ESP8266", so sounds like you are right @bokolob :sweat_smile:

ens4dz commented 3 years ago

I think this tool is an other choice to reverse-engineer the communication protocol : http://wiki.ai-thinker.com/gprs_download

bokolob commented 3 years ago

I asked AiThinker about support and they said that SDK isn't supported for the moment and they have no plans for support or opensource it 8( Only AT firmware has some kind of support as I get. As well they don't provide any documentation.

bokolob commented 3 years ago

Probably they wanted to create a competitor for esp.

stefankranz commented 3 years ago

Hi, you can use the aithinker firmwareupdate tool 2.1 this works easy.