Products > Test Equipment

New bench scope - Fnirsi 1014D, 7", 1GSa/s

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pcprogrammer:

--- Quote from: donwulff on January 04, 2023, 10:29:53 am ---Looking at the schematics & data sheet, I think that can only be UART1 serial, which gives easy enough port addresses to look for in the Ghidra output. Mainly for baud rate & framing, although I suppose I could scoop that too. Assuming the main processor isn't expected to send anything, it's just a few tries to find out what it's sending for keys and work from there... If it does send, I'll have to play with the emulator. I'd hate having to solder things on the pins.

--- End quote ---

Yes it is UART1 that is being used. I already named a lot of the functions in the Ghidra archive for it. See the attached images. All you have to do is check the code on what is written to the UART registers starting with 0x01C254.

You already have the manual for the F1C100s in the repository. It is the same as the F1C200s which I used because it has an index.

It is probably the easiest to solder the wires on the GD32 chip end  :)

pcprogrammer:

--- Quote from: donwulff on January 04, 2023, 10:29:53 am ---I was wondering if there's been any clarity to the "special IC", is it just crude attempt at copy prevention? If so, that'd be two extra I/O's, unfortunately both need FPGA design. Filter switching would actually need KAQY214S or similar.

--- End quote ---

I have no idea why they added this in. All it does is create problems. The I2C implementation in the FPGA is crap and I have seen it go wrong often and needing a resend of the data. The scope became more reliable after I removed the usage all together. First needed to figure out what it did of course  :palm:

But when you use 8 if statements to make up an XOR who knows what other weird stuff you think up being great.

The FPGA has 17 pins free to be used, but soldering wires to it is a young mans game.  |O At least for me that is. Even with a microscope it is hard for me.

Fungus:
Imagine how many more of these they could sell if they open-sourced the firmware.

pcprogrammer:
Yeah, would be interesting to see if the 1013D sales went up after my firmware came available  8)

It would make it a lot easier to improve on it if they did open source it.

pcprogrammer:
I looked on my other system and it looks like I got the sources for the sunxi tools from here: https://github.com/linux-sunxi/sunxi-tools
Other info about it: https://linux-sunxi.org/Sunxi-tools

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