Documents and Software Related to the famous CH341a used in I2C/SPI Flash Programmers also called as BIOS Programmers
Please note that this repository is a Coagulation of know-how from different sources.
This is versatile USB to multi-protocol converter chip.
There are 4 major items that become clear from the enclosed Datasheet(English)
The Main uses that this chip finds is programing SPI flash chips. These SPI flash chips are often used in the BIOS of many computer cards. In fact most of the WiFi routers use these SPI flash chips to store the embedded Linux image. So ideally these programmers can actually help you swap the Linux image on a WiFi Router. Also it has been reported that this programmer can be used to recover bricked or locked out BIOS from laptops.
Lets look at how the programmer looks like:
Folks at Onetransistor have been kind enough to provide a schematics also:
We have downloaded the drivers from Jiangsu QinHeng Ltd Website hence all should be Genuine Drivers , malicious items free.
Most of the times you would not need any driver specifically since its auto registered. However to communicate you might need the help of libraries.
It's interesting that the manufacturer actually provides support Android support. Not only that they provide the Android application to test and the Library in
There is not much support for MAC from the manufacturer.
We still did not find any clean programmer application, that does
not contain any viruses. Hence if any one can help us provide a clean
programmer application - please let us know.
We have finally found one piece of closed source software for programming. This was contributed by Github User BigBox2020. Another is usbASP Flash Programmer .aka. AsProgrammer. This is an Open-Source alternative contributed by Alexander Gavrilov.
Please find the links to the respective contributions below.
Here are few Open-source projects targeting this platform:
Here are few more Open-Source projects shared with us by Alexander Gavrilov
Here are a few Close-Source links shared with us by Alexander Gavrilov
Here are a few Closed-Source links shared with us by Github User BigBox2020:
Here are a few Open-Source tool flashrom links shared with us by Github User BigBox2020:
This project uses CH341a as parallel memory programmer. It requires 2 adtional MCP23017 running on (i2c). The project also includes a GUI based on C# for controlling the programmer. Here are the contrinutions:
Please feel free to contribute anything you believe would be helpful for the community.
Current parts that need help: