main.c

ARM9 芯片AT91RM9200 的hello测试程序

//*----------------------------------------------------------------------------
//*         ATMEL Microcontroller Software Support  -  ROUSSET  -
//*----------------------------------------------------------------------------
//* The software is delivered "AS IS" without warranty or condition of any
//* kind, either express, implied or statutory. This includes without
//* limitation any warranty or condition with respect to merchantability or
//* fitness for any particular purpose, or against the infringements of
//* intellectual property rights of others.
//*----------------------------------------------------------------------------
//* File Name           : main.c
//* Object              : main application written in C
//* Creation            : ODi   06/26/2002
//*
//*----------------------------------------------------------------------------

#include "AT91RM9200.h"

// AT91F_DBGU_Printk is defined in init.c
extern void AT91F_DBGU_Printk(char *);

int main()
{
	unsigned int tick;
	AT91F_DBGU_Printk("\n\n\r-I- =====================================================\n\r");
	AT91F_DBGU_Printk("-I- AT91RM9200 UART example\n\r");
	AT91F_DBGU_Printk("-I- ----------------------------------------------------\n\r");
	AT91F_DBGU_Printk("-I- This application print a 'hello world!' each second\n\r");
	AT91F_DBGU_Printk("-I- ====================================================\n\r");
	tick = *(AT91C_ST_CRTR);
	while (1) {
		AT91F_DBGU_Printk("hello world!\n\r");
		while (tick == *(AT91C_ST_CRTR));
		tick = *(AT91C_ST_CRTR);
	}
}