A table run time located on M3 flash need to be accessed from R4 flash code. To achieve this, I located a 4 bytes memory on M3 flash in linker command file using a name. When the address of the table is available, the C code will store the address of the table to the memory through this name. Below is the code just doing this.
void * table_ptr[2];
table_ptr[0] = getTableAddress(); /* the address of the table is now stored in the 1st element of the table_ptr array */
unsigned int * memory_ptr;
memory_ptr = &memory_label /* memory_label is defined in linker command file with a fixed memory address */
*memory_ptr = (unsigned int) (table_ptr[0]);
The above code doesn't work and the content at memory_lable is still blank after executing the code. dose anyone know what is the problem and how to solve it. Thank you.
Joy
Joy,
Your last instruction should be
*memory_ptr = (unsigned int) (*table_ptr[0]);
From your debugger, you should be able to check if memory_ptr and table_ptr[0] have the correct address.
Thanks and regards,
Zhaohong