The latest versions of ChibiOS are now located here: http://code.google.com/p/rtoslibs/
I have upgraded the ChibiOS libraries for AVR and ARM to version 2.4.3 - ChibiOS20130112.zip http://code.google.com/p/beta-lib/downloads/list
ChibiOS/RT 2.4.3 has been released. This is a maintenance release fixing all known bugs, mainly in the STM32 HAL. This update also contains several enhancements back-ported from the development branch.
I have added many new examples and modified previous examples to better illustrate ChibiOS features. Here is a list of the current examples.
chBlinkPrint - Simple demo of three threads
chContextTime - Measure context switch time with an oscilloscope
chCoop - Demonstration of cooperative scheduling
chFifoDataLogger - Log data to an SD card with two threads
chIsrSemaphore - Schedule a task from an ISR with a semaphore
chJitter - Test of scheduling time jitter
chLiuLayland - Rate Monotonic Scheduling from Liu and Layland paper
chMailPool - Memory pool and mailbox with two senders and one receiver
chMutex - Use mutex to prevent print calls from being scrambled
chRoundRobin - Run two tasks round-robin
chSemaphore - Example of counting semaphores