6LBR is a 6LoWPAN Border Router based on The Contiki Operating System.

This repository ports cetic/6lbr onto stm32f103 platform. The hardware uses stm32f103ret6 as the core control unit. Ethernet part uses enc28j60, and radio part uses at86rf231.

This project uses summon-arm-toolchain as the cross compilation toolchain. It is a very simple build script for bare metal arm toolchain and it will automaticly intergate libopencm3 as part of the toolchain.

For the installation refer to this, or my blog.

The author now suggest using gcc-arm-embedded instead! But I am too lazy to change the toolchain. Maybe sometime later I will do it when I'm in good mood.

This project uses libopencm3 as the firmware library for stm32. So I modify the cpu related code with libopencm3.

NOTE: libopencm3 has a function called timer_reset(), it conflicts with the same name function in contiki sys/timer.c, so I change all of the timer_reset() in contiki into contiki_timer_reset().

This is the platform code for my gateway hardware. Another folder called stm32-mote is the leaf node, which is used together with examples/er-rest-example to test the function of the gateway. The two hardware is compatible except that the gateway has enc28j60 but the mote doesn't.

This is the main code for 6lbr. 6lbr has three modes but I only use the router mode. You can easily change the code into the other two modes. And examples/er-rest-example is a CoAP server example, which is used on stm32-mote hardware for a test.

Now it can perform the basic router function.

The code is really rough, hope it has some reference value for you!