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Merge branch 'main' into bio-api

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README-baochip.md
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@ -5,7 +5,7 @@ Baochip-based boards use the `bao1x` SoC. There are two boards supported out-of-
- `dabao` is a minimal SoM-style breakout board. Basically just the chip on a board.
- `baosec` is a hardware security token. It features a camera, display, external memory, buttons, and a supplemental hardware TRNG.
The build idiom is `cargo xtask <target>`, i.e. `cargo xtask dabao`. The build will generate a [`UF2`](https://makecode.com/blog/one-chip-to-flash-them-all) artifact, which can be found in `target/riscv32imac-unknown-[xous|none]-elf/release/`.
The build idiom is `cargo xtask <target>`, i.e. `cargo xtask dabao`. The build will generate a [`UF2`](https://makecode.com/blog/one-chip-to-flash-them-all) artifact, which can be found in `target/riscv32imac-unknown-[xous|none]-elf/release/`. You will need to copy all three artifacts generated (loader.uf2, xous.uf2, and apps.uf2) initially to ensure that the loader, kernel, and applications are at the same revision. After that point if the loader and kernel are not updated, one can just update apps.uf2.
Holding down the `PROG` button while plugging the device into USB will cause it to enter a bootloader that enumerates a mass storage device. The build artifacts can then be copied onto the device. Pressing `PROG` again will cause the device to run the program. Targets also enumerate a serial port over USB, which will activate a debug console.