porting freeRTOS to pic18f8680

Kernel
1

nobody wrote on Thursday, April 13, 2006:

Hello,
I’m a beginner. I want to porting freeRTOS to PIC18f8680. The Problem is that the tasks are not called.

What could the problem be?
Thanks for help.

Here my linker script:

LIBPATH .

FILES c018i.o
FILES clib.lib
FILES p18f8680.lib

CODEPAGE   NAME=vectors    START=0x0            END=0x29           PROTECTED
CODEPAGE   NAME=page       START=0x2A           END=0xFFFF
CODEPAGE   NAME=idlocs     START=0x200000       END=0x200007       PROTECTED
CODEPAGE   NAME=config     START=0x300000       END=0x30000D       PROTECTED
CODEPAGE   NAME=devid      START=0x3FFFFE       END=0x3FFFFF       PROTECTED
CODEPAGE   NAME=eedata     START=0xF00000       END=0xF003FF       PROTECTED

ACCESSBANK NAME=accessram  START=0x0            END=0x5F
DATABANK   NAME=BIG_BLOCK  START=0x60           END=0xCFF
DATABANK   NAME=sfr13      START=0xD00          END=0xDFF          PROTECTED
DATABANK   NAME=sfr14      START=0xE00          END=0xEFF          PROTECTED
DATABANK   NAME=sfr15      START=0xF00          END=0xF5F          PROTECTED
ACCESSBANK NAME=accesssfr  START=0xF60          END=0xFFF          PROTECTED

SECTION    NAME=CONFIG     ROM=config

STACK SIZE=0x60 RAM=BIG_BLOCK

2

nobody wrote on Saturday, April 15, 2006:

you can Check length of source file path, the length of file full name is must not be more than 32 characters.

3

nobody wrote on Wednesday, April 19, 2006:

You were right it were more than 32 characters, but i have still the same problem that the tasks are not called…?
Further ideas?

4

nobody wrote on Wednesday, April 19, 2006:

You were right it were more than 32 characters, but i have still the same problem that the tasks are not called…?
Further ideas?

5

nobody wrote on Thursday, May 25, 2006:

The include file path must be vailed, please check it!

6

nobody wrote on Monday, May 29, 2006:

hi everybody,

i would like to port FreeRTOS to pic18 too. But i don’t have much background on RTOS. Is there any document that i can refer to?

Thanks.

7

rtel wrote on Monday, May 29, 2006:

If you are using WizC or MPLAB then there is a pic 18 port already.  The issue being getting the linker script correct.  I think WizC will be easier to use.

Other than that take a look at the "implementation" pages of the FreeRTOS.org web site.  It gives a lot of information, albeit for an AVR not pic.

Regards.