Nov 282019
 

This is more of a brain dump for yours truly, since as a day job, I’m dealing with OpenThread a lot, and so there’s lots of little tricks out there for building it on various platforms and configurations. The following is not so much a how-to guide, but a quick brain dump of different things I’ve learned over the past year or so of messing with OpenThread.

Verbose builds

To get a print out of every invocation of the toolchain with all flags, specify V=1 on the call to make:

$ make -f examples/Makefile-${PLATFORM} …${ARGS}… V=1

Running one step at a time

To disable the parallel builds when debugging the build system, append BuildJobs=1 to your make call:

$ make -f examples/Makefile-${PLATFORM} …${ARGS}… BuildJobs=1

Building a border router NCP image

General case

$ make -f examples/Makefile-${PLATFORM} …${ARGS}… BORDER_AGENT=1 BORDER_ROUTER=1 COMMISSIONER=1 UDP_FORWARD=1

For TI CC2538

# Normal CC2538 (e.g. Zolertia Firefly)
$ make -f examples/Makefile-cc2538 BORDER_AGENT=1 BORDER_ROUTER=1 COMMISSIONER=1 UDP_FORWARD=1

# CC2538 + CC2592
$ make -f examples/Makefile-cc2538 BORDER_AGENT=1 BORDER_ROUTER=1 COMMISSIONER=1 UDP_FORWARD=1 CC2592=1

If you want to run the latter image on a WideSky Hub, you’ll need to edit examples/platform/cc2538/uart.c and comment out line 117 before compiling as it uses a simple diode for 5V to 3.3V level shifting, and this requires the internal pull-up to be enabled:

115     // rx pin
116     HWREG(IOC_UARTRXD_UART0) = IOC_PAD_IN_SEL_PA0;
117     HWREG(IOC_PA0_OVER)      = IOC_OVERRIDE_DIS; // ← comment out this to allow UART RX to work
118     HWREG(GPIO_A_BASE + GPIO_O_AFSEL) |= GPIO_PIN_0;

For Nordic nRF52840

# Nordic development board (PCA10056) via J2 (near battery)
$ make -f examples/Makefile-nrf52840 BORDER_AGENT=1 BORDER_ROUTER=1 COMMISSIONER=1 UDP_FORWARD=1

# Ditto, but instead using J3 (near middle of bottom edge)
$ make -f examples/Makefile-nrf52840 BORDER_AGENT=1 BORDER_ROUTER=1 COMMISSIONER=1 UDP_FORWARD=1 USB=1

# Nordic dongle (PCA10059)
$ make -f examples/Makefile-nrf52840 BORDER_AGENT=1 BORDER_ROUTER=1 COMMISSIONER=1 UDP_FORWARD=1 USB=1 BOOTLOADER=USB

I’m working on what needs to be done for the Fanstel BT840X… watch this space.

Building certification test images

For CC2538

$ make -f examples/Makefile-cc2538 BORDER_ROUTER=1 COMMISSIONER=1 DHCP6_CLIENT=1 JOINER=1