Products > Test Equipment
New bench scope - Fnirsi 1014D, 7", 1GSa/s
joseph4511:
they both seem to be dead :( its great to buy with boards but unfortunately its expensive for me.
pcprogrammer:
Yes I have a datasheet for the FPGA. It is to big to attach here, so I uploaded it to the githup repo: https://github.com/pecostm32/Lichee_Nano/tree/main/Hardware/Dake_Elec_FA201
Also take a look here for a schematic of the board Aliexpress sels: https://github.com/pecostm32/Lichee_Nano/blob/main/Hardware/Dake_Elec_FA201/Schematic_Dake_Elec_FA201_2022-01-23.pdf
pcprogrammer:
--- Quote from: joseph4511 on May 05, 2022, 07:05:27 pm ---they both seem to be dead :( its great to buy with boards but unfortunately its expensive for me.
--- End quote ---
I know they are not to cheap. There are tests that can be done to see if they are the problem. But that is for later. I'm getting tired now.
joseph4511:
Thank you for your effords and patient. It s great to have a mate like you :)
pcprogrammer:
Hi Yusef,
lets see if we can probe the boards some more. Do you have a stm32f103 bluepill board lying around? If so it is possible to make a jtag programmer for the Anlogic FPGA. See: https://github.com/pecostm32/Lichee_Nano/tree/main/Hardware/Anlogic_JTAG_Programmer
With such a jtag programmer it is possible to see if the FPGA is still responding by using the Tang Dynasty IDE. Read the posts on this page: https://www.eevblog.com/forum/testgear/fnirsi-1013d-100mhz-tablet-oscilloscope/msg3885164/#msg3885164 They give a lot of info on the FPGA and the needed software.
I think the motherboard has a connection for the jtag programmer. It is next to the FPGA FLASH, but have to verify this by opening my scope.
If you do not have a bluepill I will see if I can whip up a simple test to check the FPGA via the CPU connection on the motherboard. I'm also going to look at the original firmware to see if I can pinpoint the spot the system hangs on.
Cheers,
Peter
EDIT: The connecter on the board is indeed the JTAG connector. See attached image with the pin names.
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