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Hantek - Tekway - DSO hack - get 200MHz bw for free

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morris6:
Better check that again.. there are several empty footprints. The H1007 hardware has a 20 pin, 2x 10 pin, 2mm pitch connector for the processor's JTAG. Attached a picture here.

DC1MC:

--- Quote from: morris6 on November 06, 2021, 03:11:27 pm ---Better check that again.. there are several empty footprints. The H1007 hardware has a 20 pin, 2x 10 pin, 2mm pitch connector for the processor's JTAG. Attached a picture here.

--- End quote ---

Well then I was just reading in the OpenOCD manual, the thing is packaged back, excellent, then if it's a full JTAG then everything should go easier ;).

morris6:
From the schematic: the 2x10 pin headers are programming ports for the FPGA and the CPLD.

Attached here a detail of the schematic containing the JTAG header and the reset circuit.

DC1MC:

--- Quote from: morris6 on November 06, 2021, 09:53:36 pm ---From the schematic: the 2x10 pin headers are programming ports for the FPGA and the CPLD.

Attached here a detail of the schematic containing the JTAG header and the reset circuit.

--- End quote ---

So this header has the CPU in the chain ?

morris6:
Well, from what I see in my notes the NAND isn't talked to directly by the JTAG. I used the H-TAG program with LPT-port JTAG as mentioned earlier. After connecting to the processor a short program was uploaded in RAM and that made it possible to read and write the Flash memory. Also a script file needed to be filled with some parameters about addresses and clock setup. For now I didn't find any more info on my old W7 disk, the script was probably with the program on an even older XP system.

I suggest that you get your connection to the CPU working first and thereafter see what is needed in your setup to connect to the flash memory.
Easiest is to flash the NAND with an assembled file that contains boot, empty area, kernel and root files with OOB info. That will contain in hex 0x0420.0000 bytes, 131072 pages, 4096 blocks.

For reference, the complete schematics attached here. They were published earlier in this thread and on Mikrocontroller.net. And be aware, this is all the great work of Tinhead who reverse engineered the whole thing.



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