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add some build description.

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hathach 2018-05-08 22:25:15 +07:00
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README.md
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# Adafruit nRF52840 Bootloader # Adafruit nRF52840 Bootloader
This repository contains the USB bootloader for Adafruit nRF52840 boards (1MB flash, 256KB SRAM). This repository contains the USB bootloader for Adafruit nRF52840 boards (1MB flash, 256KB SRAM).
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
git submodule update --init
## Build with makefile
Navigate to `src/singlebank` (recommended) or `src/dualbank` (work in progress), and use feather52840 target for building bootloader.
make feather52840
To flash bootloader + S140
make flash_feather52840
To only flash S140
make flash_sd
## Build using Segger Embeded Studio
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 )