b0529bc943
This commit provides a method to verify that firmware has been signed with a private key given its public key. The implementation uses ed25519-dalek as the signature verifier. An "ed25519" feature is required to enable the functionality. When disabled (the default), calling the firmware updater's verify method will return a failure.
39 lines
1.2 KiB
Markdown
39 lines
1.2 KiB
Markdown
# Examples using bootloader
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Example for nRF demonstrating the bootloader. The example consists of application binaries, 'a'
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which allows you to press a button to start the DFU process, and 'b' which is the updated
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application.
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## Prerequisites
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* `cargo-binutils`
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* `cargo-flash`
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* `embassy-boot-nrf`
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## Usage
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```
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# Use bare metal linker script
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cp memory-bl.x ../../bootloader/nrf/memory.x
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# Flash bootloader
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cargo flash --manifest-path ../../bootloader/nrf/Cargo.toml --features embassy-nrf/nrf52840 --target thumbv7em-none-eabi --release --chip nRF52840_xxAA
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# Build 'b'
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cargo build --release --bin b --features embassy-nrf/nrf52840
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# Generate binary for 'b'
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cargo objcopy --release --bin b --features embassy-nrf/nrf52840 --target thumbv7em-none-eabi -- -O binary b.bin
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```
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# Flash `a` (which includes b.bin)
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```
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cargo flash --release --bin a --features embassy-nrf/nrf52840 --target thumbv7em-none-eabi --chip nRF52840_xxAA
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```
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You should then see a solid LED. Pressing button 1 will cause the DFU to be loaded by the bootloader. Upon
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successfully loading, you'll see the LED flash. After 5 seconds, because there is no petting of the watchdog,
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you'll see the LED go solid again. This indicates that the bootloader has reverted the update.
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