MicroPython
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Hello. Github has indeed an official firmware for 1MB module (which also support a small file system). In this firmware, esp.flash_user_start() is about 600k (so leaving about 400k for file system) HOWEVER, I cannot recreate such a configuration by compiling from source (using any of the manifest included as example). esp.flash_user_start() is always 1Mb QUESTION: is there a manifest I can use ? or (more likely) what should I modify in the source to compile a firmware for 1MB flash and a small file system Thanks you! |
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Replies: 1 comment 1 reply
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Did you have the setting of BOARD_VARIANT=FLASH_1M on the make command line? |
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That worked. Thanks !!. I should have RTFM more carefully, as this is mentioned in the ports/esp8266 section of github. This indeed creates a firmware with ~600K of firmware and the rest (400k) for filesystem. NOTE: in my case, 600K seems not enough to freeze all of my module. Make fails with irom overflows Ideally, I would like to "set the cursor" between firmware and file system, But this is not a critical issue. the current workaround is to put everything in flash (as frozen bytecode) with no file system at all. thanks again |
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That worked. Thanks !!. I should have RTFM more carefully, as this is mentioned in the ports/esp8266 section of github.
This indeed creates a firmware with ~600K of firmware and the rest (400k) for filesystem.
NOTE: in my case, 600K seems not enough to freeze all of my module. Make fails with irom overflows
(I freeze a lot of code to run it from flash (thanks's harvard), to avoid RAM shortage)
Ideally, I would like to "set the cursor" between firmware and file system,
But this is not a critical issue. the current workaround is to put everything in flash (as frozen bytecode) with no file system at all.
thanks again