ChibiOS_AVR at version 2015.11.15 doesn't compile with Arduino IDE 1.8.0 about chibios-arduino

[greiman]

It's a bug in the version of gcc in 1.80.

Go to libraries/ChibiOS_AVR/src/utility/chthreads.c and add this as a work around at line 397.

void chThdExit(msg_t msg) __attribute__((used));  //<<<< ADD THIS LINE
void chThdExit(msg_t msg) {

  chSysLock();
  chThdExitS(msg);
  /* The thread never returns here.*/
}

[greiman]

Download the newest version of ChibiOS and try porting it to Arduino. There really are no tutorials about building operating systems for small embedded systems.

Here is a link.

Better yet, Download ChibiStudio and use it with a low cost STM32 board.

Ebay has this board for about $3.00 with 20K RAM and 64K flash.

Digikey has this board for about $15.00 with 128K of RAM and 512K of flash.

[greiman]

I won't be updating ChibiOS, use the standalone version of ChibiOS.

[greiman]

I tried 1.80 on Windows and it is OK. Looks like a problem with the Linux version of the IDE.

Here is chBlink:

Sketch uses 3076 bytes (9%) of program storage space. Maximum is 32256 bytes.
Global variables use 557 bytes (27%) of dynamic memory, leaving 1491 bytes for local variables. Maximum is 2048 bytes.

Here is the blinkPrint example.

Sketch uses 5004 bytes (15%) of program storage space. Maximum is 32256 bytes.
Global variables use 782 bytes (38%) of dynamic memory, leaving 1266 bytes for local variables. Maximum is 2048 bytes.

[biank88]

Thanks! with that tricky line everything seems to work fine.
I've tried to study the code by myself but I got lost pretty soon. Do you have any suggestions on how to start hacking with ChibiOS?

[biank88]

Thanks!