Skip to content

Firmware for nordic MCUs used in the Redox wireless keyboard

License

Notifications You must be signed in to change notification settings

LucidityCrash/redox-w-firmware

 
 

Repository files navigation

Redox Wireless Keyboard Firmware

Firmware for Nordic MCUs used in the Redox wireless Keyboard, contains precompiled .hex files, as well as sources buildable with the Nordic SDK This firmware was derived from Reversebias' Mitosis and Durburz's Interphase firmware.

Redox's documentation page

For additional information about the Redox keyboard visit:

Install dependencies

Tested on Ubuntu 16.04.2, but should be able to find alternatives on all distros.

sudo apt install openocd gcc-arm-none-eabi

Download Nordic SDK

Nordic does not allow redistribution of their SDK or components, so download and extract from their site:

https://developer.nordicsemi.com/nRF5_SDK/nRF5_SDK_v11.x.x/nRF5_SDK_11.0.0_89a8197.zip

Firmware written and tested with version 11

unzip nRF5_SDK_11.0.0_89a8197.zip -d nRF5_SDK_11
cd nRF5_SDK_11

Toolchain set-up

A cofiguration file that came with the SDK needs to be changed. Assuming you installed gcc-arm with apt, the compiler root path needs to be changed in /components/toolchain/gcc/Makefile.posix, the line:

GNU_INSTALL_ROOT := /usr/local/gcc-arm-none-eabi-4_9-2015q1

Replaced with:

GNU_INSTALL_ROOT := /usr/

Clone repository

Inside nRF5_SDK_11/

git clone https://github.com/mattdibi/redox-w-firmware

Install udev rules

sudo cp redox-w-firmware/49-stlinkv2.rules /etc/udev/rules.d/

Plug in, or replug in the programmer after this.

OpenOCD server

The programming header on the side of the keyboard:

Redox-programming-headers

It's best to remove the battery during long sessions of debugging, as charging non-rechargeable lithium batteries isn't recommended.

Launch a debugging session with:

openocd -s /usr/local/Cellar/open-ocd/0.8.0/share/openocd/scripts/ -f interface/stlink-v2.cfg -f target/nrf51_stlink.tcl

Should give you an output ending in:

Info : nrf51.cpu: hardware has 4 breakpoints, 2 watchpoints

Otherwise you likely have a loose or wrong wire.

Manual programming

From the factory, these chips need to be erased:

echo reset halt | telnet localhost 4444
echo nrf51 mass_erase | telnet localhost 4444

From there, the precompiled binaries can be loaded:

echo reset halt | telnet localhost 4444
echo flash write_image `readlink -f precompiled-basic-left.hex` | telnet localhost 4444
echo reset | telnet localhost 4444

Automatic make and programming scripts

To use the automatic build scripts:

  • keyboard-left: ./redox-w-keyboard-basic/program_left.sh
  • keyboard-right: ./redox-w-keyboard-basic/program_right.sh
  • receiver: ./redox-w-receiver-basic/program.sh

An openocd session should be running in another terminal, as this script sends commands to it.

About

Firmware for nordic MCUs used in the Redox wireless keyboard

Resources

License

Stars

Watchers

Forks

Releases

No releases published

Packages

No packages published

Languages

  • C 68.6%
  • Makefile 28.2%
  • Shell 3.2%