Remove elf2uf2-rs in favour of picotool #947
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elf2uf2-rs seems to be unmaintained, and as of Rust 1.89 rejects valid ELF files due to an overly strict check of the ELF header. Picotool is maintained by Raspberry Pi and does not have this problem. This commit changes guide-level explanation in the root and RP2040 examples READMEs, and the runner in .cargo/config.toml files, to picotool. Some wording around the flashing process as "creating a UF2 file" was changed as picotool can flash directly from an ELF file with the appropriate command-line flag. Information about deliberately creating a UF2 file has been kept. In addition, the root README now directs people to rp-binary-info rather than stating that picotool-compatible "binary info" is unsupported.
thejpster
reviewed
Aug 12, 2025
thejpster
approved these changes
Aug 12, 2025
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Thank you for these improvements! |
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elf2uf2-rs seems to be unmaintained, and as of Rust 1.89 rejects valid ELF files due to an overly strict check of the ELF header. Picotool is maintained by Raspberry Pi and does not have this problem.
This commit changes guide-level explanation in the root and RP2040 examples READMEs, and the runner in .cargo/config.toml files, to picotool.
Some wording around the flashing process as "creating a UF2 file" was changed as picotool can flash directly from an ELF file with the appropriate command-line flag. Information about deliberately creating a UF2 file has been kept.
In addition, the root README now directs people to rp-binary-info rather than stating that picotool compatible "binary info" is unsupported.
A question: Previously the root README said:
I have removed this explicit recommendation as the paragraph above it directs people to use picotool if they are not using a debug probe (or otherwise wish to flash over USB). Is this acceptable, or should an explicit recommendation (to use picotool over USB) be included?