26 lines
919 B
Markdown
26 lines
919 B
Markdown
# Adafruit nRF52840 Bootloader
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This repository contains the USB bootloader for Adafruit nRF52840 boards (1MB flash, 256KB SRAM).
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This repository depend on the [tinyusb](https://github.com/hathach/tinyusb/tree/develop) as submodule, after cloing this repo you need to run this command
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git submodule update --init
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## Build with makefile
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Navigate to `src/singlebank` (recommended) or `src/dualbank` (work in progress), and use feather52840 target for building bootloader.
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make feather52840
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To flash bootloader + S140
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make flash_feather52840
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To only flash S140
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make flash_sd
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## Build using Segger Embeded Studio
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For better debugging you can also use SES, The project file is located at `src/segger/nrf52840_bootloader.emProject`. Note: the SES only flash the bootloader when you click download, you need to flash Softdevice beforehand if you haven't done so ( use `make flash_sd` mentioned above )
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