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New 2ch pocket DSO+SG - Zeeweii DSO2512G

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Aldo22:

--- Quote from: timschuerewegen on October 20, 2023, 03:40:15 pm ---I just added .wav file export to my modified firmware, what else can I add/change :)

--- End quote ---

Cool!  8)
I also wanted to export wave forms to import them into the AWG.
But since I have no idea about firmware hacking, I just tried to read the information from the bitmap. The little software is not ready yet but the wave form looks better than the original!  ;D

Will you share your firmware changes with us?

timschuerewegen:
Sure. But you should make a backup of your SPI flash chip first in case something goes wrong. I desoldered my SPI flash chip and used a cheap USB BIOS programmer to dump it. I am also using it to reprogram the SPI flash chip to test my firmware changes. It should also be possible to read/write the SPI flash chip via USB "FEL" mode but only if you can insert a microSD card into the microSD slot, so you can enter USB FEL mode, which is impossible to do since the battery connector is in the way  >:(

If anyone wants to discuss DSO2512G firmware hacking with me:
https://discord.gg/7UN88dhmKs


--- Quote from: Aldo22 on October 20, 2023, 04:11:13 pm ---Will you share your firmware changes with us?
--- End quote ---

timschuerewegen:
The first 300 bytes in the .wav blob are 300 Y1 values, the next 300 bytes are 300 Y2 values. Draw 300 vertical lines between Y1 and Y2 and you see the waveform.




--- Quote from: Aldo22 on October 20, 2023, 04:11:13 pm ---I also wanted to export wave forms to import them into the AWG.
But since I have no idea about firmware hacking, I just tried to read the information from the bitmap. The little software is not ready yet but the wave form looks better than the original!  ;D
--- End quote ---

Aldo22:

--- Quote from: timschuerewegen on October 20, 2023, 05:35:08 pm ---The first 300 bytes in the .wav blob are 300 Y1 values, the next 300 bytes are 300 Y2 values. Draw 300 vertical lines between Y1 and Y2 and you see the waveform.

--- End quote ---

Great!  :-+
But you don't get more resolution this way, right?
One can also get 300x200 px by scanning the bitmap, although it's a bit more complicated and possibly less reliable.

timschuerewegen:

--- Quote from: Aldo22 on October 20, 2023, 06:02:48 pm ---But you don't get more resolution this way, right?
--- End quote ---

I modified the firmware to save some fpga/waveform buffers to the SPI flash and one of the buffers, the one used to calculate all the measurements (pkpk, min, max, ...), contained 1200 bytes so I plotted them

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