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- First in 8051def.h, it appears the uip_arch-asm.S file was copied from z80 and am unsure it will work properly. I modified the 8051def.h to prevent the UIP code from using these routines. - In dma.c the config routine provides access to all of the DMA channel options, except for the word mode flag. In order to maintain compatibility with any existing code I created a second routine and converted the original routine into a wrapper routine with a fixed word mode value. - uart.c::uart0_init was missing blocking access to the higher baud rates. I am not sure why, so I corrected this. - I also copied over to header files that provide some useful macros from the msp430 cpu. The files are lpm.h and hwconf.h. The lpm.h is for switching power modes, I think. The hwconf.h has various macros for configuring port I/O. By porting these files the led/button api's can be ported with minimal modifications.
Contiki is an open source, highly portable, multi-tasking operating system for memory-constrained networked embedded systems written by Adam Dunkels at the Networked Embedded Systems group at the Swedish Institute of Computer Science. Contiki is designed for embedded systems with small amounts of memory. A typical Contiki configuration is 2 kilobytes of RAM and 40 kilobytes of ROM. Contiki consists of an event-driven kernel on top of which application programs are dynamically loaded and unloaded at runtime. Contiki processes use light-weight protothreads that provide a linear, thread-like programming style on top of the event-driven kernel. Contiki also supports per-process optional preemptive multi-threading, interprocess communication using message passing through events, as well as an optional GUI subsystem with either direct graphic support for locally connected terminals or networked virtual display with VNC or over Telnet. Contiki contains two communication stacks: uIP and Rime. uIP is a small RFC-compliant TCP/IP stack that makes it possible for Contiki to communicate over the Internet. Rime is a lightweight communication stack designed for low-power radios. Rime provides a wide range of communication primitives, from best-effort local area broadcast, to reliable multi-hop bulk data flooding. Contiki runs on a variety of platform ranging from embedded microcontrollers such as the MSP430 and the AVR to old homecomputers. Code footprint is on the order of kilobytes and memory usage can be configured to be as low as tens of bytes. Contiki is written in the C programming language and is freely available as open source under a BSD-style license. More information about Contiki can be found at the Contiki home page: http://www.sics.se/contiki/