Thread: Return value to Register

No keywords[1] involved here, but perhaps you want to think about how you would do the exact opposite of what your leesRegister does.

[1] keywords in C are the words defined by the compiler, such as "if", "while", etc.

--
Mats

How does a code, that does the exact opposite, look like?

Code:

#define IOBASE 0x4000

void schrijfRegister( unsigned char* ddr ) 
{
  ddr[0] = *( ( unsigned char* ) ( IOBASE + 0x10 ) );
  ddr[2] = *( ( unsigned char* ) ( IOBASE + 0x12 ) );  
  ddr[4] = *( ( unsigned char* ) ( IOBASE + 0x14 ) );
}

is this correct?

Originally Posted by Lettin03

How does a code, that does the exact opposite, look like?

Code:

#define IOBASE 0x4000

void schrijfRegister( unsigned char* ddr ) 
{
  ddr[0] = *( ( unsigned char* ) ( IOBASE + 0x10 ) );
  ddr[2] = *( ( unsigned char* ) ( IOBASE + 0x12 ) );  
  ddr[4] = *( ( unsigned char* ) ( IOBASE + 0x14 ) );
}

is this correct?

No, that's EXACTLY THE SAME, not the OPPOSITE.

--
Mats

Originally Posted by Lettin03

Could you show how the opposite looks like then? I cant figure it out and it's driving me crazy

Give it a try - think about what you want to do. Your first function reads FROM a register, the new function should do what?

--
Mats

Originally Posted by Lettin03

Uhm I'm thinking about the same code, but = means the variable becomes. Should I use ==?

So what do you actually say that this function should do: describe what it does in words, and I think it will be clear to you what you need to do and how to write the code!

--
Mats