uart_ev44b0.h.bak

44B0的测试程序。此程序为44B0的4*4键盘的应用程序

/*
 * MICETEK International Inc., (shanghai) 
 * 	By Qinwei , 2003.05.28 (CopyRight)
 * 
 *  Version 0.1
 */

#ifndef __UART_EV4510_

#define __UART_EV4510_
int port_init(int ch);
int dev_uart_init (int sys_clock, int reg_base, int ch);
//dev_uart_init returns non-negative number on  succuess, 0 on failing.

int crtio (int baund);
//crtio returns the old baund rate on success, 0 on failing.

void outbyte (int);
//outbyte returns the written char on success or EOF on failing.

int inbyte (void);
//inbyte returns the byte it reads on success or EOF on failing.
#define _ISR_STARTADDRESS 0xc7fff00     //GCS6:64M DRAM/SDRAM
//S3C44B0 uart register
#define ULCON	0x0
#define UCON	0x4
#define UFCON	0x8
#define UMCON	0xC
#define UTRSTAT	0x10
#define UERSTAT	0x14
#define UFSTAT  0x18
#define UMSTAT  0x1C
#define UTXH    0x20
#define URXH    0x24
#define UBRDIV  0x28
//clock register
#define PLLCON  0x01D80000
//USE MCLK 40M
#define B9600	259
#define B19200	129
#define B38400	64
#define B57600	42
#define B115200	21

int port_init(int ch);
int dev_uart_init (int sys_clock,  int reg_base, int ch);
int crtio (int baud);
void Delay(int time);
void outbyte(int data);
int inbyte (void);

#endif //__UART_EV4510_