keil_iodemo.c

The project KEIL_IODemo shows how to use memory allocation routines (malloc) and char I/O (printf, s

/*
 *  IODEMO.C:  Demonstrates usage of printf, scanf and malloc with
 *             GNU Compiler (on ADuC7024)
 *  Copyright KEIL ELEKTRONIK GmbH and KEIL SOFTWARE, Inc. 2003 - 2004
 *
 *  This file may be compiled in ARM or Thumb Mode
 */


#include <ADuC7024.H>
#include <stdio.h>
#include <stdlib.h>

unsigned char memory_pool[0x400];

int main (void) {
	int iIterator;
	int iUserVar1 = 0;
	int *iArray;

	GP1CON = 0x011;							// Setup tx & rx pins on P1.0 and P1.1
											// Start setting up UART at 9600bps
	COMCON0 = 0x80;							// Setting DLAB
	COMDIV0 = 0x93;						
	COMDIV1 = 0x00;							             
	COMCON0 = 0x07;							// Clearing DLAB

// initialize memory pool
   init_mempool (memory_pool, sizeof(memory_pool));

// create an array big enough to hold 10 integers
 	iArray = malloc (10*sizeof(int));

	if(iArray == NULL) 	{
		printf("Malloc failed!\n");
	}
	else {	
	  for(iIterator = 0; iIterator<10; iIterator++) {
		iArray[iIterator] = iIterator*2;
	  }
	}

// demonstrate user input via scanf
// an alternative to scanf is gets and sscanf
	printf("please enter a number: ");
	scanf("%i", &iUserVar1);
	printf("\nUser Input: %i\n", iUserVar1);

    while (1);
}