Hi,
I wrote a test function as;
// Task definitions OS_TID T_Test; U64 Test_stack[13312/8]; __task void init (void); __task void Test (void) ; // Function definition uint16_t TestFunc( uint8_t a0, uint8_t a1, uint8_t a2, uint16_t a3, uint8_t a4, uint8_t a7, uint16_t a9, uint16_t a10, uint8_t* a5, uint8_t* a6, uint8_t* a8, uint8_t* a11, uint8_t* a12, uint8_t* a13) { uint16_t x; //........ return 0; } __task void init (void) { /* Initialize Tasks */ T_Test = os_tsk_create_user (Test, 1, &Test_stack, sizeof(Test_stack)); os_tsk_delete_self(); } // Call Function __task void Test (void) { uint8_t x=9,*y; uint16_t z=0x1001; y=&x; x = TestFunc(x,x,x,z,x,x,z,z,y,y,y,y,y,y); os_tsk_delete_self(); }
The last two "y" are not equal to the address of the x. I need to know passing argument limitations and the reasons of this unexpected(according to me) condition.
Need help! (asap.)
Thanks.
My guess would be a stack alignment issue with all the uint8, uint16 and uint32 parameters being passed into this routine.
Check the memory space where the stack is located (ie: 'View Memory' window) to determine if the parameters in your call are there. Also, are the values you are seeing fragments of the correct address (ie: some hex values but not in proper order?).
If you want to pass that many parameters you usually just create a structure and pass in the structure's pointer to the function instead.