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microbuilder 2018-05-14 17:37:06 +02:00
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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
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 flash, 256KB SRAM). This repository depend on [tinyusb](https://github.com/hathach/tinyusb/tree/develop) as submodule. After
cloning this repo you need to run the following command:
git submodule update --init git submodule update --init
## Option 1: Build with makefile ## Option 1: Build with makefile
Navigate to `src/singlebank` (recommended) or `src/dualbank` (work in progress), and use feather52840 target for building bootloader. Navigate to `src/singlebank` (recommended) or `src/dualbank` (work in progress),
and use feather52840 target for building bootloader.
make feather52840 make feather52840
@ -23,16 +25,14 @@ To only flash S140
#### 1. `arm-none-eabi-gcc`: No such file or directory #### 1. `arm-none-eabi-gcc`: No such file or directory
If you get the following error: If you get the following error ...
```
$ make feather52840 $ make feather52840
Compiling file: dfu_single_bank.c Compiling file: dfu_single_bank.c
/bin/sh: /usr/bin/arm-none-eabi-gcc: No such file or directory /bin/sh: /usr/bin/arm-none-eabi-gcc: No such file or directory
make: *** [_build/dfu_single_bank.o] Error 127 make: *** [_build/dfu_single_bank.o] Error 127
```
You make need to edit the `Makefile` (for example `src/singlebank/Makefile`), ... you may need to edit the `Makefile` (for example `src/singlebank/Makefile`),
and update the `GNU_INSTALL_ROOT` to point to the root path of your GCC ARM and update the `GNU_INSTALL_ROOT` to point to the root path of your GCC ARM
toolchain. toolchain.
@ -55,4 +55,9 @@ $ export PATH=$PATH:/Users/Kevin/Downloads/nRF5x-Command-Line-Tools_9_7_2_OSX/nr
## Option 2: Build using Segger Embeded Studio ## Option 2: 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 ) For better debugging you can also use [SES](https://www.segger.com/products/development-tools/embedded-studio/).
The project file is located at `src/segger/nrf52840_bootloader.emProject`.
> **Note**: SES only flashes the bootloader when you click download, you need to
flash Softdevice beforehand if you haven't done so ( use `make flash_sd`
mentioned above )