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florentbr / OWON-VDS1022

Unofficial release for the OWON VDS1022/I Oscilloscope
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Bad flash header: 0xFFFF #94

Open yurii-vavrynchuk-embrox opened 9 months ago

yurii-vavrynchuk-embrox commented 9 months ago

Hello, I have some problem with flash memory. image

This problem was happened after I tried to load firmware from the C++ (according to your algorithms). I have no ability to perform factory reset (nothing happens after that). Also I can't run your python code because of the problem above.

Please, help!

florentbr commented 9 months ago

Looks like the flash is corrupted. It's not that serious since the flash only holds the calibration and version, not the firmware. It's quite simple to write it back with the python API.

device = VDS1022(flash="backup-flash.bin")
device.sync_flash()

If you previously attempted to overwrite the flash with the python API, then there's a backup in the current folder. If you don't have a backup, then build the flash.bin from spec (see issue #14).

The official software automatically saves the flash parameters in a file when launched. It should be in a flash_txt folder.

Regarding the algorithm, you may have to change the header from 55 AA to AA 55 with newer devices. https://github.com/florentbr/OWON-VDS1022/blob/4c67805713906c20b4414b4225fd293adea4cb05/api/python/vds1022/vds1022.py#L1689 https://github.com/florentbr/OWON-VDS1022/blob/4c67805713906c20b4414b4225fd293adea4cb05/api/python/vds1022/vds1022.py#L1705

yurii-vavrynchuk-embrox commented 9 months ago

Hello, @florentbr. Thank you so much for your answer so much! Best regards, Yurii