FreeRTOSv10.3.1 Demo Cygnal compile error

[henry (趙南凱)]

Hi,

While using sdcc to compile the 8051 demo/cygnal/make, I got the following error messages…
$ make
sdcc -c --model-large -I. -I…/Common/include -I…/include -I…/…/Source/include -DSDCC_CYGNAL --debug --less-pedantic --xram-size 8448 --stack-auto --no-peep --int-long-reent --float-reent ParTest/ParTest.c
…/…/Source/include/task.h:335: error 226: no type specifier for ‘xTaskCreate parameter 6’
ParTest/ParTest.c:72: error 98: conflict with previous declaration of ‘vParTestSetLED’ for attribute ‘type’ at …/Common/include/partest.h:34
from type ‘void function ( unsigned-char fixed, signed-char fixed) __reentrant fixed’
to type ‘void function ( unsigned-char fixed, unsigned-char fixed) __reentrant fixed’
make: *** [Makefile:87: ParTest/ParTest.rel] Error 1
$
Any help on this?

henry c.

[rtel (Richard Barry)]

The SDCC build problems have been on the list of known issues for a very long time as it has not been a priority for us to fix this given the chip is so old - however very recently somebody posted a fix either in the forum, or in one of the Git repos. As I recall it was just a matter of updating some of the keywords used in the assembly from those expected by an old version of SDCC to whatever is expected by the new version.

[myupctoys (Stefan)]

For others, see my comment on which SDCC, FreeRTOS and GNU Make version worked.

Search for “Installing FreeRTOS on an 8051 microcontroller chip” Can’t post links.

[aggarg (Gaurav Aggarwal)]

@myupctoys

Can’t post links.

@myupctoys You should now be able to post links.

[ActoryOu]

Let me help to update the link here.

Installing FreeRTOS on an 8051 microcontroller chip

As with others, all I wanted is a starting point. Hopefully this helps someone else out. The 8051 port described on FreeRTOS site and available in the Cygnal Demo folder, I have been able to confirm FreeRTOS V2.4.1 compiles with SDCC 2.5.0 May 8 2005 without error, zero modifications to the source and the Makefile as is. End up with an Intel hex file. Just need the path added for your Make and SDCC binary. For completeness, GNU Make version used was 64 bit 4.3 on W10 64 bit. Don’t know if the…

[myupctoys (Stefan)]

Thanks guys.

Might make it simple and stick the relevant files on my GitHub account and post a link. Unless there is a more relevant place to stick it? Links that disappear aren’t much use to anyone.

There will be a caveat… Don’t expect SDCC and FreeRTOS teams to support you with a code base 18 years old. But it does give one confidence to move forward, knowing the compilation worked.

[aggarg (Gaurav Aggarwal)]

@myupctoys

Might make it simple and stick the relevant files on my GitHub account and post a link.

That is a good idea - please do so.

[myupctoys (Stefan)]

For completeness on the 8051 FreeRTOS port, refer to link.

Installing FreeRTOS on an 8051 microcontroller chip

Tested and added the relevant files to my GitHub account. README tells you all you need to know to get going. SDCC and FreeRTOS versions zipped, and the enclosed project is stripped back to only the Cygnal port. All the original ports are still in the Zip. Do Not expect support from FreeRTOS or SDCC development teams given this is 18 years old as of todays date. Intended only as a starting point. In case I change the project name, can be found here.

[aggarg (Gaurav Aggarwal)]

Thank you for sharing!