***************************************************************************** *** Directories structure *** ***************************************************************************** ./readme.txt - This file. ./license.txt - GPL3 license file. ./src/ - ChibiOS/RT portable kernel source files. ./src/include/ - ChibiOS/RT include files. ./src/lib/ - ChibiOS/RT library code that can be included into user applications but is not part of the core system. The code in this directory is meant to be portable, generic and architecture indipendent. ./src/templates/ - ChibiOS/RT non portable source templates, new ports are started by copying the templates into a new directory under ./demos/. ./ports/ - Architecture/compiler specific portable files. ./demos/ - Demo programs for specific archtectures/boards. ./test/ - Test code, used by some demos. ./docs/Doxifile - Doxigen project file. ./docs/html/index.html - ChibiOS/RT documentation (after running doxigen). The documentation is also available on the project web page: http://chibios.sourceforge.net/ Current ports under ./demos: Win32-MinGW - ChibiOS/RT simulator and demo into a WIN32 process, MinGW version. Win32-MSVS - ChibiOS/RT simulator and demo into a WIN32 process, Visual Studio 7 or any later version should work. ARM7-LPC214x-GCC - ChibiOS/RT port for ARM7 LPC2148, the demo targets the Olimex LPC-P2148 board. This port can be easily modified for any processor into the LPC2000 family or other boards. The demo can be compiled using YAGARTO or any other GCC-based ARM toolchain. AVR-AT90CANx-GCC - Port on AVR AT90CAN128, not complete yet. ***************************************************************************** *** Releases *** ***************************************************************************** *** 0.4.0 *** - NEW, added a benchmark functionality to the test suite. The benchmark measures the kernel throughput as messages per second and context switches per second. The benchmark will be useful for fine tuning the compiler options and the kernel itself. - NEW, implemented a debug subsystem, it supports debug messages and a context switch circular trace buffer. The debug code can be enabled/disabled by using the CH_USE_DEBUG in chconf.h. The trace buffer is meant to be fetched and decoded by an external tool (coming soon, it can be accessed using JTAG in the meanwhile). - Added new API chThdGetPriority() as a macro. - Implemented panic messages when CH_USE_DEBUG is enabled. - Added a thread identifier field to the Thread structure, it is used only for debug. - Global variable stime modified as volatile. - API chSysGetTime() reimplemented as a macro. - Fixed a regression with the CH_CURRP_REGISTER_CACHE option. - Fixed a problem in the LPC2148 interrupt handling code, a spurious interrupts fix recommended on the NXP data sheet proved to be a very bad idea and not about real spurious interrupts also... - Fixed an harmless warning message in buzzer.c. *** 0.3.6 *** - Added SSP (SPI1) and ext.interrupts definitions to the lpc214x.h file. - Added SSP driver for the LPC2148. - Added experimental MMC/SD block driver to the LPC2148 demo in order to support file systems. The driver features also events generation on card insert/remove, hot plugging supported. - Added missing chThdSuspend() declararion in threads.h. *** 0.3.5 *** - Space optimization in events code. - Changed the behavior of chEvtWaitTimeout() when the timeout parameter is set to zero, now it is consistent with all the other syscalls that have a timeout option. - Reorganized all the kernel inline definitions into a single file (inline.h). - Fixed a minor problem in the interrupt initialization code for the LPC214x demo, regrouped the VIC-specific code into vic.c/vic.h. - Fixed a bug into the LPC2148 serial driver (limited to the serial port 2). - Implemented HW transmit FIFO preloading in the LPC2148 serial driver in order to minimize the number of interrupts generated, it is possible to disable the feature and return to the old code which is a bit smaller, see the configuration parameters in ./ARM7-LPC214x/GCC/lpc214x_serial.h. - Some more work done on the AVR port, it is almost complete but not tested yet because my JTAG probe broke... *** 0.3.4 *** - Fixed a problem in chVTSetI(). - New API, chVTIsArmedI(), it is a macro in delta.h. - New API, chThdResumeI(), it is a macro in threads.h. This function is just an alias for chSchReadyI() but makes the code more readable. - New API, chThdSuspend(). New switch CH_USE_SUSPEND added to chconf.h. *** 0.3.3 *** - Modified the chVTSetI(), now for the "time" parameter can have value zero with meaning "infinite". This allows all the APIs with timeout parameters to be invoked with no timeout. - Fixes in the documentation. - Renamed some APIs in the "Sch" group to have an S suffix instead of I. *** 0.3.2 *** - Modified the chSysInit() to give the idle thread absolute priority, the priority is then lowered to the minimum value into the chSysPause(). This is done in order to ensure that the initializations performed into the main() procedure are finished before any thread starts. - Added chThdSetPriority() new API. - Added a generic events generator timer modulee to the library code. - Modified the ARM7-LPC214x-GCC demo to show the use of the event timer. - Added the "#ifdef __cplusplus" stuff to the header files. - Removed an obsolete definition in ./src/templates/chtypes.h. *** 0.3.1 *** - Test program added to the demos. Telnet the MinGW and MSVS demos and type "test" at the "ch>" prompt. On the LPC214x demo the test is activated by pressing both the board buttons. The test performs tests on the ChibiOS/RT functionalities. The test code is also a good example of APIs usage and ChibiOS/RT behavior. - Fixed bug in chEvtWaitTimeout(), the timeout code performed an useless dequeue operation. - Fixed a bug in chSemWaitTimeoutS() and chSemWaitTimeout(), the semaphore counter was not atomically updated on a timeout condition. - Fixed bug on RT semaphores, the priority queuing was broken. - Fixed a bug in the MinGW demo, the chThdExit() code was not correctly reported to the thread waiting in chThdWait(). - Fixed a function declaration in semaphores.h. - Lists code moved into chlists.c from various other places optimized and reorganized. - The list of the threads waiting in chThdWait() is now a single link list, this saves some space. - Cleaned the template files code, the files contained some obsolete declarations. - Code optimization in chSemWaitTimeoutS(), chSemWaitTimeout() and chSemSignalWait(). - Code optimization in chEvtSend(). - Code optimization in chVTDoTickI(). - Added a Semaphore pointer to the Thread structure, this allows to know on which semaphore a thread is waiting on. It takes no space because it is located in the union inside the Thread structure. This also allowed a minor optimization inside chSemWaitTimeout() and chSemWaitTimeoutS(). - Changed the priority type to unsigned in order to make it compatible with a byte value, this is very important for 8 bits architectures. - Modified the MinGW and MSVS demos to use 1ms ticks instead of 10ms as before. *** 0.3.0 *** - ChibiOS/RT goes beta. - Diet for the threads code, some simple APIs become macros. - Thread Local Storage implemented as a single API: chThdLS(). The API simply returns a pointer into the thread working area, see the documentation on the web site. - Moved some documentation and images from the web site into the Doxigen generated HTMLs. *** 0.2.1 *** - Optimizations in the RT semaphores subsystem. The support for this subsystem should still be considered experimental and further changes may happen in future versions. - Bug fix in the virtual timers handling code, now the timers can be re-armed from within the callback code in order to create periodic virtual timers. - Modified the t_prio type in the demos to be 32bits wide instead of 16bits, this results in a better code in critical sections of the kernel. *** 0.2.0 *** - Introduced support for ARM in thumb mode. - Optimized context switching when thumb-interworking is not required, one less instruction. - Minor fixes to the ARM demo. *** 0.1.1 *** - Some fixes into the documentation - Renamed makefiles to Makefiles, upper case M. *** 0.1.0 *** - First alpha release