main.c

来自「COLDFIRE 5275板极初始化程序」· C语言 代码 · 共 44 行

/*
 * File:		main.c
 * Purpose:		Main process
 *
 */

#include "m5275evb.h"

/********************************************************************/

void main (void)
{
	char ch;
	uint32 j;

	
	/* Enable interrupts */
	mcf5xxx_wr_sr(0x2000);
	
	printf("\nMCF5275 Initialization Complete!\n");
	
	/* Set DTOUT0,1,2,3 to act as GPIO */
	MCF_GPIO_PAR_TIMER = 0x0000;
	
	/* Set Data Direction of DTOUT0,1,2,3 to Output */
	MCF_GPIO_PDDR_TIMERH = 0x0F;
	MCF_GPIO_PDDR_TIMERL = 0x0F;

	while(1)
	{
		/* Write 0 to turn LEDs on */
		MCF_GPIO_PODR_TIMERH = 0x00;
		MCF_GPIO_PODR_TIMERL = 0x00;
		for (j = 0; j < 1000000; j++);
		
		/* Write 1 to turn LEDs off */
		MCF_GPIO_PODR_TIMERH = 0xFF;
		MCF_GPIO_PODR_TIMERL = 0xFF;
		for (j = 0; j < 1000000; j++);
	}
}

/********************************************************************/