uart.h

在S3C44B0X ARM处理器上用C语言实现的IIS接口驱动程序

#ifndef __Uart_H__
#define __Uart_H__

// UART寄存器定义
#define ULCON0		(*(volatile unsigned long *)0x01D00000)
#define UCON0		(*(volatile unsigned long *)0x01D00004)
#define UFCON0		(*(volatile unsigned long *)0x01D00008)
#define UMCON0		(*(volatile unsigned long *)0x01D0000C)
#define UTRSTAT0	(*(volatile unsigned long *)0x01D00010)
#define UERSTAT0	(*(volatile unsigned long *)0x01D00014)
#define UFSTAT0		(*(volatile unsigned long *)0x01D00018)
#define UMSTAT0		(*(volatile unsigned long *)0x01D0001C)
#define UTXH0		(*(volatile unsigned long *)0x01D00020)
#define URXH0		(*(volatile unsigned long *)0x01D00024) 
#define UBRDIV0		(*(volatile unsigned long *)0x01D00028)

#define pURXH0 0x01D00024
#define pUTXH0 0x01D00020

#define MCLK 20500000	/* Master Clock */
#define BR     19200	/* Baud Rate */
#define BRD ((int)(MCLK/16.0/BR+0.5)-1)	/* Baud Rate Divisor */

#define BUF_SIZE	17	// 缓冲区大小，不能超过16个+1，FIFO限制
#define TRUE	1
#define FALSE	0

void uart_init(void);    // 串口初始化
//void task_uartrx(void);  // 串口接收任务
//void task_uarttx(void);  // 串口发送任务

#endif