Comments (4)
I was able to recover the board with the code at https://github.com/xypron/JH71xx-tools, branch VisionFive2, commit 6e6da5069b476dfebfb0a08f77fb72abff294c3e.
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For reference: I wrote a similar CLI tool in Rust 🦀
https://github.com/orangecms/vf2-loader
I am getting NAKs frequently though, could use more improvements, but it's mostly fine for small images during firmware development. Thank you for the C tool, I'm looking at it for reference.
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@orangecms The XMODEM-CRC specification allows only 10 consecutive NAKs [1] but the implementation in the BootROM sends more consecutive NAKs. It is for this reason the the sx utility cannot be used.
[1] http://wiki.synchro.net/ref:xmodem
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@orangecms The XMODEM-CRC specification allows only 10 consecutive NAKs [1] but the implementation in the BootROM sends more consecutive NAKs. It is for this reason the the sx utility cannot be used.
Thank you for the hint! I mostly just power cycle fully to get back into a workable state, having lots of flaky experiences, regardless of the load tool I use. Often CRC errors, and retry never works then, only power off/on.
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Related Issues (5)
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