This is a project using open-source tools to develop applications for Nordic nRFx based platforms.

nrftool is a python script that uploads a file, like nrf51422.bin, using bus pirate, to an nRF51422 (tested with a BLE400 board). In principle, this can be extended to other nRF51 series modules, and hopefully even to an nRF52 some day. Since nrftool depends on some bus pirate support (a python library "pyBusPirateLite"), a requirement to get this working is to download and install that dependency (or just make a symbolic link).

nrfgenmake has other python scripts; it reads files of a project and generates a Makefile suitable to GCC arm (tested with arm-none-eabi). The goal is to automate building new nRF52 projects. This is very incomplete, only a work-in-progress. Some example projects are included in the nrfgenmake directory. The difficulty of automation is due to the way configuration data are distributed in a project: source files, SDK libraries, source, and header files; Makefile parameters; the sdk_config.h file. When something doesn't compile, or does compile but doesn't work, where is the problem? Could be the Makefile, could be the sdk_config.h file, could be what was imported, and so it goes.

Here are the files in nrfgenmake:

• BLEclock - a program which combines some BLE functions with a clock, written for the nRF51422 platform
• blinky - standard led hello world made complicated by using all the Nordic conventions for application timer, application scheduling, random number generation, low-power idling (but eventually you probably need to use these anyway)
• hfclk - a slightly tweaked copy of SDK15.3/examples/ble_peripheral/ble_app_hrs, trying to ask Softdevice to turn on the high frequency clock and get a response; but it fails
• hrsmotetx - another modified copy of ble_app_hrs, which manages to implement 802.15.4 transmissions (multiprotocol) along with BLE; it depends on a modification to Nordic's 802.15.4 stack from github, just a few changes to the rsch code.
• motetx - a standalone 802.15.4 tranmission program which attempts to set up headers and payload for compatibility with mote-style packets
• octavrx - a standalone 802.15.4 receiving/logging program
• octavxx - a standalone 802.15.4 transmitting program
• mersdk - a crude python script to compare two sdk_config.h files, which turns out to be handy guessing at what options to set
• nrfgenmake51 - the program which constructs a new Makefile, using files inside the config directory: Makefile.in, Makefile.posix, options.json; also sdk_config.h, blank.ld or s110.ld (linker files). This version was created some years ago for the nRF51832 or similar.
• nrfgenmake52 - a newer version of nrfgenmake51, now for the nrf52840.