[INFO] ChibiOS 3.0 Status

[russian]

Sure, 2014

So much better than 2015!

I will let the others push you further

[wgreiman]

I downloaded ChibiOS 3.0 from GitHub yesterday. I really like how nil is now integrated.

I found a possible problem with serial in the NIL-STM32F051-DISCOVERY demo. I modified this line to write more text.

Code: Select all

   chnWrite(&SD1, (const uint8_t *)"Hello World!\r\n", 14);

If I write more than 17 bytes, the example freezes after writing the first two bytes. The blink threads also stop.

I think the problem is in hal_queues.c - oqWriteTimeout().

If I replace the osalThreadEnqueueTimeoutS() with an unlock and return, the program no longer freezes. The message is truncated but the first 18 bytes print.

Code: Select all

  while (oqIsFullI(oqp)) {
      osalSysUnlock();////////////////////////////////////////////////////////
      return w;///////////////////////////////////////////////////////////////   
      if (osalThreadEnqueueTimeoutS(&oqp->q_waiting, time) != Q_OK) {
        osalSysUnlock();
        return w;
      }
    }

I also have a problem building the RT-STM32F051-DISCOVERY demo with the latest version of Sourcery CodeBench Lite. I get the following:

Linking build/ch.elf
main.c: In function 'main':
main.c:58:5: internal compiler error: Segmentation fault
int main(void) {
^
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://sourcery.mentor.com/GNUToolchain/> for instructions.
lto-wrapper: arm-none-eabi-gcc returned 1 exit status
c:/users/bill/mentorgraphics/sourcery_codebench_lite_for_arm_eabi/bin/../lib/gcc
/arm-none-eabi/4.8.1/../../../../arm-none-eabi/bin/ld.exe: lto-wrapper failed
collect2.exe: error: ld returned 1 exit status
cs-make: *** [build/ch.elf] Error 1

If I use this make call it builds.

cs-make USE_LTO=no

I have not tried an older version of Sourcery CodeBench Lite to see if Link Time Optimization works.

[Giovanni]

Hi,

LTO is known to work using this toolchain: https://launchpad.net/gcc-arm-embedded

About the issue with queues, I will look into it, thanks for finding.

Giovanni

[wgreiman]

Thanks for the link to the GCC ARM toolchain.

Their just released 4.8 version has a problem with lto but the 2013-09-26 version of 4.7 works.

[Giovanni]

Hi,

I finally found the root cause, it was a bug in chSemSignalI() in Nil. Now the queues work as expected.

Next for the 3.0 branch, the AVR and MSP430 ports, this should not take long.

Giovanni

[part1zan_]

Got the same problem with segfault, I use Launchpad's arm-none-eabi-gcc:

[03:27:45] che@quad:~/mcu/chibios-stm32f103/ChibiOS-RT/demos/STM32/RT-STM32F103-OLIMEX_STM32_P103$ make
Linking build/ch.elf
main.c: In function 'main':
main.c:41:5: internal compiler error: Segmentation fault
int main(void) {
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
lto-wrapper: arm-none-eabi-gcc returned 1 exit status
/usr/bin/../lib/gcc/arm-none-eabi/4.8.3/../../../../arm-none-eabi/bin/ld: lto-wrapper failed
collect2: error: ld returned 1 exit status
make: *** [build/ch.elf] Error 1

Fresh ChibiOS/RT, just trying to compile a supplied demo. What should I do?

[saraben]

Have a look at this thread viewtopic.php?f=2&t=1900

The short answer is that with gcc 4.8 LTO is a problem.
The most reliable results are achieved when LTO is set to no in Makefile.

saraben

[Giovanni]

Correct, I recommend staying with 4.7.3 which is very reliable. You may give a try to the Bleeding Edge Toolchain 4.8.x, I am not sure it shares this problem. Both compilers are included in ChibiStudio 6.

Giovanni

[russian]

Looks like the release is getting closer, but not yet?

[Giovanni]

The "preview 3" has been released yesterday.

Giovanni