Hi,

I'm trying to implement FreeRTOS in BF561core B, I'm close but I have a runtime error that I cannot figuer out. When the scheduler start and try to trigger the first task, the memory pointer get lost and it doesn't start the first stack, instead in start a function inside the first task and get lost when going out of the function.


this is the corresponding debug log:

COREB: handler declared                                                        
COREB: Initialise New TCB:NewTCB address: 3d01000                              
COREB: TopofStask: 0, pxTopOfStack = 3d0263c                                   
COREB: pxTaskCode =3c030dc, pvParameters = 0                                   
COREB: returned pxNewTCB->pxTopOfStack = 3d02588                               
COREB: Add the idle task at the lowest priority                                
COREB: Initialise New TCB:NewTCB address: 3d03000                              
COREB: TopofStask: 0, pxTopOfStack = 3d0431c                                   
COREB: pxTaskCode =3c02698, pvParameters = 0                                   
COREB: returned pxNewTCB->pxTopOfStack = 3d04268                               
COREB: end Add the idle task at the lowest priority                            
COREB: if xReturn == 1, and xReturn = 1                                        
COREB: before disable interupt                                                 
COREB: after disable interupt                                                  
COREB: before  xPortStartScheduler                                             
COREB: start xPortStartScheduler fn before set core timer                      
COREB: after ContextSwitch interupt flag                                       
COREB: before prvSetupTimerInterrupt                                           
COREB: after prvSetupTimerInterupt                                             
COREB: Task Switch context called                                              
COREB: The scheduler is running                                                
COREB: Trace task switchout called                                             
COREB: before Task first check for stack overflow                              
COREB: Task first check for stack overflow called                              
COREB: Task second check for stack overflow called                             
COREB: before call get owner of next entry                                     
COREB: get owner of next entry:                                                
COREB: current TCB 3d01000                                                     
COREB: pxReadyTasksLists[ uxTopReadyPriority ] = 1                             
COREB: TCB content:                                                            
COREB: top of stack: 3d02588                                                   
COREB: GenericListItem: 0                                                      
COREB: Event ListItem: 9                                                       
COREB: Priority: 1                                                             
COREB: start of stack: 3d02000                                                 
COREB: Task Name: BootTas                                                      
COREB: TCB number: 0                                                           
COREB: Task Tag: 0                                                             
COREB: trace switch in                                                         
COREB: write trace to buffer                                                   
COREB: end of app init                                                         
COREB: execption 2b addr ff700be4                                              
COREB: coreb dump stack                                                        
COREB: found fp: ff700b64  

I've a full discussion on the blackfin forum for more details:

http://ez.analog.com/message/38669#38669

I'm afraid I'm not familiar with Blackfin at all, but is this any help as a reference?
http://interactive.freertos.org/forums/79366-analog-devices

Regards.

Hi,

thanks for the link but this is actually the code I used to transfer to BF561 and gcc compiler.

Anyone has any idea how I can resolve this problem? where else could I post the request?

Thanks

William