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igrr / mkspiffs

Tool to build and unpack SPIFFS images
MIT License
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Unable to unpack image created by spiffsgen #79

Open AlexanderKokushkin opened 3 years ago

AlexanderKokushkin commented 3 years ago

Hello,

I'm creating spiffs image this way: spiffsgen.py 40960 --page-size 256 --block-size 4096 mypackdir image.bin then unpacking with mkspiffs: mkspiffs.exe -b 4096 -p 256 -s 40960 -u mydestdir image.bin and getting random numbers in extracted files.

The same issue is with the images downloaded from the chip. ESP-IDF version is 4.1. mkspiffs.exe correctly unpacks images created by himself. e.g. mkspiffs.exe -b 4096 -p 256 -s 40960 -c mypackdir image.bin The resulting images created by mkspiffs and spiffsgen are different. I tried several versions from /Releases with the same results.

Please help, maybe I missed some crucial parameter? Thanks.

Skizy commented 3 years ago

Hi I had the same behaviour. But on my ubuntu linux mkspiffs just crushed without attempt to create any of files. Recently I've upgraded ESP-IDF to 4.1.1 (as well as toolchain to esp-2020r3) and now mkspiffs unpacks files perfectly! Tried to generated image and image got from esp-wroom32, all are fine.

argilo commented 3 years ago

spiffsgen.py uses a file metadata length of 4 by default, so I think you would need to build mkspiffs with make dist CPPFLAGS="-DSPIFFS_OBJ_META_LEN=4" to read such files.

Calebe94 commented 3 years ago

spiffsgen.py uses a file metadata length of 4 by default, so I think you would need to build mkspiffs with make dist CPPFLAGS="-DSPIFFS_OBJ_META_LEN=4" to read such files.

Thank you @argilo. Building mkspiffs with DSPIFFS_OBJ_META_LEN=4 worked for me.