Programming knowledge -- basis of C language

1. Memory and pointer

describe

How to access memory

It looks like the first address is stored , In fact, it recognizes continuous memory space

2. Control with pointer gpio

int main()
{
	unsigned int *pGPFCON = (unsigned int *)0x56000050;
	unsigned int *pGPFDAT = (unsigned int *)0x56000054;

	/*  To configure GPF4 Is the output pin  */
	*pGPFCON = 0x100;
	
	/*  Set up GPF4 Output 0 */
	*pGPFDAT = 0;

	return 0;
}