Problems with Free RTOS

Hi verybody, 
I'm trying to compile FreeRTOS for PIC18F devices using SDCC but with no
success. I'm testing a simple example I got from somewhere. The code
mainly does nothig but when compiling I get this error: 
 
main.c:43: error 78: incompatible types 
from type 'void generic* ' 
to type 'void generic* generic* ' 
 
The error refers to the first parameter in this function: 
 
xTaskCreate( vTestTask, "Hello", configMINIMAL_STACK_SIZE, NULL,
tskIDLE_PRIORITY + 1, NULL ); 
 
This function is defined: 
 
signed portBASE_TYPE xTaskCreate( pdTASK_CODE pvTaskCode, const signed
portCHAR * const pcName, unsigned portSHORT usStackDepth, void
*pvParameters, unsigned portBASE_TYPE uxPriority, xTaskHandle
*pxCreatedTask ); // Defined in task.h 
 
and pdTASK_CODE is defined as: typedef void (*pdTASK_CODE)( void * ); //
Defined in projdefs.h 
 
My task is defined as: 
 
static void vTestTask( void *pvParameters ); // Dummy task which does
nothing. 
 
What is wrong here? Why are they incompatible? 
 
If I make this in the main code before calling the funcion to create a
task: 
pdTASK_CODE ptr; 
ptr = vTestTask; 
 
I get no errors at that point, but if I use ptr as first parameter to the
function I get the same error as before. I do not understand anything... 
 
Thanks in advance 

jelomer a �crit :
> Hi verybody, 
> I'm trying to compile FreeRTOS for PIC18F devices using SDCC but with no
> success. I'm testing a simple example I got from somewhere. The code
> mainly does nothig but when compiling I get this error: 
>  
> main.c:43: error 78: incompatible types 
> from type 'void generic* ' 
> to type 'void generic* generic* ' 
>  
> The error refers to the first parameter in this function: 
>  
> xTaskCreate( vTestTask, "Hello", configMINIMAL_STACK_SIZE, NULL,
> tskIDLE_PRIORITY + 1, NULL ); 
>  
> This function is defined: 
>  
> signed portBASE_TYPE xTaskCreate( pdTASK_CODE pvTaskCode, const signed
> portCHAR * const pcName, unsigned portSHORT usStackDepth, void
> *pvParameters, unsigned portBASE_TYPE uxPriority, xTaskHandle
> *pxCreatedTask ); // Defined in task.h 
>  
> and pdTASK_CODE is defined as: typedef void (*pdTASK_CODE)( void * ); //
> Defined in projdefs.h 
>  
> My task is defined as: 
>  
> static void vTestTask( void *pvParameters ); // Dummy task which does
> nothing.

This is not a definition but a declaration.

Try to define the task as:

static void vTestTask( void *pvParameters ){} // Dummy task which does
nothing.


>  
> What is wrong here? Why are they incompatible?



>  
> If I make this in the main code before calling the funcion to create a
> task: 
> pdTASK_CODE ptr; 
> ptr = vTestTask; 
>  
> I get no errors at that point, but if I use ptr as first parameter to the
> function I get the same error as before. I do not understand anything... 
>  
> Thanks in advance 
> 
> 

In article <V-adnXf5xdK2Xg7YnZ2dnUVZ_umlnZ2d@giganews.com>, jelomer 
<jelomer@hotmail.com> writes
>Hi verybody,
>I'm trying to compile FreeRTOS for PIC18F devices using SDCC but with no
>success. I'm testing a simple example I got from somewhere.

Have you thought about asking for support on the FrreRTOS and SDCC web 
sites?



-- 
\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
\/\/\/\/\ Chris Hills  Staffs  England     /\/\/\/\/
/\/\/ chris@phaedsys.org      www.phaedsys.org \/\/\
\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/

> Have you thought about asking for support on the FrreRTOS and SDCC web 
> sites?

Yes - the same question is on the FreeRTOS.org support forum, where I 
believe it was resolved.

PIC18/SDCC/FreeRTOS.org is not an official supported combination, although 
SDCC on Cygnal 8051 is.

Regards,
Richard.

+ http://www.FreeRTOS.org
+ http://www.SafeRTOS.com
for Cortex-M3, ARM7, ARM9, HCS12, H8S, MSP430
Microblaze, Coldfire, AVR, x86, 8051, PIC24 & dsPIC