6e6c3cbebc
The memory layout of the s140 crept into a number of memory files, which can cause confusion.
38 lines
1.0 KiB
Markdown
38 lines
1.0 KiB
Markdown
# Examples using bootloader
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Example for nRF52 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 --release --chip nRF52840_xxAA
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# Build 'b'
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cargo build --release --bin b
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# Generate binary for 'b'
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cargo objcopy --release --bin b -- -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 --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. |