I’ve inherited a C# program running on Win10 that interfaces with an NFC reader pad. The program has been running well for years, I need to make some modifications. The original engineer wrote no comments in the source code, left no notes and is long gone, likely wouldn't remember the specifics anyway.
The reader pad manufacturer tells me the reader pad is based on the TRF7960 evaluation module. They have supplied some TI documentation and I have scrounged more TI documents off the web, but it is all still insufficient.
Document sloa141.pdf is a nice introduction but it is limited in that it only discusses 3 commands, 0x10, 0x14 and 0x18.
SLOA-157 is better, it lists more commands, but surprisingly not all that I see used in my source code.
SLOU-186G is helpful, it lists the register addresses and their definitions.
With these three documents I have been able to decipher most of the commands I find in the application source code. However these documents do not cover commands such as 0xF0, 0xF1 and 0x03 that I find in my program.
Is there more complete documentation? I've spent a lot of time searching.