Blackbox readout broken on multiple targets using VCP

[fishpepper]

I just found out downloading blackbox logs from TINYFISH does not work (it probably never worked since i wrote this target).
Blackbox erase and writing works.

When i click SAVE file to disk nothing happens.
SPI traces show 0x03 0x00 0x00 0x00 as command+address (= bf tries to read address 0x000000).
Then i see lots of data beeing read out, SCK, MOSI, MOSI, CS all look valid.
Approximately 1 second later the same command is repeated again and again with the same start address....
I need to investigate what happens... Any hints/ideas are welcome :)

flash_info shows (i use an M25P16 on this board):
`

flash_info

Flash sectors=32, sectorSize=65536, pagesPerSector=256, pageSize=256, totalSize=2097152, usedSize=149504
`

[DieHertz]

Yeah, I noticed it on the latest master on my SPRF3 yesterday as well. CRC error and corrupt file at output.

[fishpepper]

I think my problem is different. I do not get any output at all... The download hangs indefinitely. It is trying to read from address 0x000000 all the time in an endless loop :(

[fishpepper]

I tested my spracingf3 with master build. downloading works fine, file is valid.
So my tinyfish problem is something else....

[fishpepper]

ok, i found out that using a usb2serial converter on uart3 works. VCP does hang.
probably related to: #1642

[fishpepper]

vcp datflash readout was probably broken for a lot of targets...
seems to be fixed pull request #1904

[martinbudden]

Closing as fixed by PR #1904