Is it possible to upgrade firmware from PYBflash or SD?
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shaoziyang
- Posts: 363
- Joined: Sun Apr 17, 2016 1:55 pm
Is it possible to upgrade firmware from PYBflash or SD?
Is it possible to upgrade firmware from PYBFlash or a SD disk?
Re: Is it possible to upgrade firmware from PYBflash or SD?
Not likely from PYBFlash, since most PYBFlash filesystems aren't big enough to do it.
I'm pretty certain that its "possible" to do, but nobody has implemented it that I'm aware of.
In order to do this, you'd basically need to write some standalone code that can do the operation entirely from RAM. If that code were position independent, then MicroPython would just need to load the code and execute it. If the code weren't position independent, then it would need a small position independent stub to relocate the loaded code to the correct fixed location and then execute it. Since MicroPython supports inline assembler, executing the code once it's loaded is pretty straight forward. Writing the code to do the work will be a bit more difficult, but definitely should be possible.
I'm pretty certain that its "possible" to do, but nobody has implemented it that I'm aware of.
In order to do this, you'd basically need to write some standalone code that can do the operation entirely from RAM. If that code were position independent, then MicroPython would just need to load the code and execute it. If the code weren't position independent, then it would need a small position independent stub to relocate the loaded code to the correct fixed location and then execute it. Since MicroPython supports inline assembler, executing the code once it's loaded is pretty straight forward. Writing the code to do the work will be a bit more difficult, but definitely should be possible.