117 lines
3.8 KiB
Markdown
117 lines
3.8 KiB
Markdown
# Adafruit Bluefruit nRF52 Bootloader
|
|
|
|
This repository contains the bootloader for Adafruit nRF52 series and other popular boards
|
|
|
|
- [Bluefruit Feather nRF52832](https://www.adafruit.com/product/3406)
|
|
- Bluefruit Feather nRF52840
|
|
- Nordic nRF52840DK PCA10056
|
|
|
|
This bootloader is meant to use with [adafruit-nrfutil](https://github.com/adafruit/Adafruit_nRF52_nrfutil), a folk of [Nordic nrfutil](https://github.com/NordicSemiconductor/pc-nrfutil). To install
|
|
|
|
$ pip3 install --user adafruit-nrfutil
|
|
|
|
This repository depends on following submodule
|
|
|
|
- [tinyusb](https://github.com/hathach/tinyusb/tree/develop)
|
|
- [nrfx](https://github.com/NordicSemiconductor/nrfx)
|
|
|
|
Get the code with following command:
|
|
|
|
git clone <URL>.git Adafruit_nRF52_Bootloader
|
|
cd Adafruit_nRF52_Bootloader
|
|
git submodule update --init
|
|
|
|
## Features
|
|
|
|
- DFU over Serial and OTA ( Application, Bootloader+SD )
|
|
- Self-upgradble via Serial and OTA
|
|
- DFU using USB Flashing Format a.k.a [UF2](https://github.com/Microsoft/uf2) (Applicatoin only)
|
|
- Auto enter DFU briefly on startup for DTR auto-reset trick (832 only)
|
|
|
|
## Burn & Upgrade
|
|
|
|
You can burn and/or upgrade bootloader with either jlink or dfu (serial) to a specific pre-built binary version without the hassle to install toolchain and compile the code. This is preferred if you are not developing/customizing the bootloader
|
|
|
|
To flash version `6.1.0r0` using jlink
|
|
|
|
$ make BOARD=feather52840 VERSION=6.1.0r0 flash
|
|
|
|
To upgrade with dfu serial
|
|
|
|
$ make BOARD=feather52840 VERSION=6.1.0r0 dfu-flash
|
|
|
|
Note: bootloader is downgradable, since the binary release is merged of bootloader and Softdevice, you could freely "upgrade" to any version you like.
|
|
|
|
## Compile
|
|
|
|
Please only continue if you are looking to develop bootloader for your own. Having a jlink to **de-brick** your device is a must.
|
|
|
|
### Option 1: Build with makefile
|
|
|
|
Prerequisite
|
|
|
|
- ARM GCC
|
|
- Nordic's [nRF5x Command Line Tools](http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.tools%2Fdita%2Ftools%2Fnrf5x_command_line_tools%2Fnrf5x_installation.html)
|
|
|
|
To build
|
|
|
|
$ make BOARD=feather52840 all
|
|
|
|
To flash bootloader
|
|
|
|
$ make BOARD=feather52840 flash
|
|
|
|
To flash SoftDevice (chip erase)
|
|
|
|
$ make BOARD=feather52840 sd
|
|
|
|
To erase chip
|
|
|
|
$ make BOARD=feather52840 erase
|
|
|
|
For the list of supported boards, try to type make without `BOARD=`
|
|
|
|
$ make
|
|
You must provide a BOARD parameter with 'BOARD='
|
|
Supported boards are: feather52832 feather52840 pca10056
|
|
Makefile:90: *** BOARD not defined. Stop
|
|
|
|
### Common makefile problems
|
|
|
|
#### 1. `arm-none-eabi-gcc`: No such file or directory
|
|
|
|
If you get the following error ...
|
|
|
|
$ make BOARD=feather52840 all
|
|
Compiling file: main.c
|
|
/bin/sh: /usr/bin/arm-none-eabi-gcc: No such file or directory
|
|
make: *** [_build/main.o] Error 127
|
|
|
|
... you may need to edit the `Makefile` and update the `GNU_INSTALL_ROOT` to point to the root path of your GCC ARM toolchain.
|
|
|
|
#### 2. `mergehex: No such file or directory`
|
|
|
|
Make sure that `mergehex` is available from the command-line. This binary is
|
|
part of of Nordic's nRF5x Command Line Tools
|
|
|
|
#### 3. `make: nrfjprog: No such file or directory`
|
|
|
|
Make sure that `nrfjprog` is available from the command-line. This binary is
|
|
part of of Nordic's nRF5x Command Line Tools.
|
|
|
|
On POSIX-type systems you can temporarily add the path to `nrfjprog` via a
|
|
variation on the following command:
|
|
|
|
```
|
|
$ export PATH=$PATH:/Users/Kevin/Downloads/nRF5x-Command-Line-Tools_9_7_2_OSX/nrfjprog
|
|
```
|
|
|
|
### Option 2: Build using Segger Embeded Studio
|
|
|
|
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/Adafruit_nRF52_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 BOARD=feather52840 sd`
|
|
mentioned above )
|