What is non-aligned access? (ARM/Keil)

Question

I\'m using Keil to write Assembly for ARM 7.

I have the following runtime error:

Non-aligned Access: ARM Instruction at 000000F8H, Memory Access at 7         


        

Answer 1

check the data type.

eg Suppose you have declared an array as unsigned int V1[25][25]; and you have extern it as extern int (*V1)[22];

suppose you are using function that returns this as,

unsigned long func()
   {`unsigned long k;
      return (V1[0][0]+k);   //you will get an error.'

   }

to avoid this use same data type in extern as extern unsigned int V1[25][25].