About Hardware Multiplier?

Hi Ferhat,

Shouldnt you be using pointer to the flash address to read the value at the address and not the address itself?

Something like (int*)(0x7000) should give you the value at the Flash address, if i am not wrong.

Regards,

Sid

Hi sid, i tried that but there is a compiler error (IAR), it says ' Error[Pe513]: a value of type "int *" cannot be assigned to an entity of type "unsigned short"  '.

Hi Ferhat,

Have you tried replacing int* with (unsigned short*)? Since you are using a 16-bit microcontroller.

Regards,

Sid

OP2 is a register in the hardware multiplier that needs to be written with the value of the operand, not the address of the operand.  If your operand physically resides at address 0x7000, then the following should be used.

unsigned short * operand2 = 0x7000 ;

OP2 = *operand2 ;

I tried that but it gave similar error, Error[Pe144]: a value of type "int" cannot be used to initialize an entity of type "unsigned short *". So i tried this,

unsigned int * operand2 = 0x7000;

OP2 = *operand2;

and compiler says, Error[Pe144]: a value of type "int" cannot be used to initialize an entity of type "unsigned int *".

I tried int * operand2, compiler gave similar error again.

Sorry, my fault.  I was a little quick on the trigger.

unsigned int * operand2 ;

operand2 = (unsigned int *)0x7000 ;

OP2 = *operand2 ;

Thanks for help.

Ferhat