at91sam7a3 port

Kernel
1

chrigus wrote on Thursday, July 23, 2009:

hello
i try to port the freertos to my at91sam7a3 ek. i took the at91sam7s64  IAR example, changed the device general option to sam7a3, the linker script to at91SAM7A3_FLASH.icf:
ROM: 0x100000 - 0x13FFFF
RAM: 0x200000 - 0x207FFF
CSTACK: 0x1000
SVC_STACK: 0x100
IRQ_STACK: 0x60
FIQ_STACK: 0x40
UND_STACK: 0x40
ABT_STACK: 0x40
HEAP: 0x2000

debug macro to at91sam7a3-ek-flash.mac
flash loader options:
Range: 0x100000 - 0xFFFFFFFF
Offset: 0
extra paramters: --flash
i’m using de same Cstartup.x and Cstartup_Sam7.c files.
The LEDs are configured to the correct port and are blinking with a test routine.

But by acitivating the task
vStartLEDFlashTasks( mainFLASH_PRIORITY );
and the Scheduler
vTaskStartScheduler();
the programm runs to main() and i can start it. but
the programm doesn’t do anything.

while flashing i get the following error:
Flash download warning: 64 out of 64 bytes from data record  CODE:[0x00000000,0x0000003F] will not be flashed

who can help me?
Thanks
Chris

2

davedoors wrote on Thursday, July 23, 2009:

I suggest ignoring any debugging until you have got the part flashing without errors. There is no point debugging if you know the code in the processor is wrong.

3

chrigus wrote on Thursday, July 23, 2009:

but where is the flashing error from? wrong flash config? wrong linker config? my own software and the atmel example programs all work fine.

4

chrigus wrote on Friday, July 24, 2009:

Is there nonbody who has experiences ?

5

chrigus wrote on Monday, July 27, 2009:

I’m still looking for help with porting freertos to a sam7a3.

6

rtel wrote on Monday, July 27, 2009:

I have some SAM7A3 IAR projects that were sent to me by a third party, but these are very old and probably based on IAR V4.x.  If you want a copy then write to me directly at r dot barry [at] freertos.org.

Regards.