serial.h

S3C44B0x上面的N皇后问题程序

#ifndef __SERIAL_H_
#define __SERIAL_H_
//define the address of the registers used in the uart communication
#define rULCON0   (*(volatile unsigned *)0x1d00000)
#define rULCON1   (*(volatile unsigned *)0x1d04000)
#define rUCON0    (*(volatile unsigned *)0x1d00004)
#define rUCON1    (*(volatile unsigned *)0x1d04004)
#define rUFCON0   (*(volatile unsigned *)0x1d00008)
#define rUFCON1   (*(volatile unsigned *)0x1d04008)
#define rUMCON0                (*(volatile unsigned *)0x1d0000c)
#define rUMCON1                (*(volatile unsigned *)0x1d0400c)
#define rUTRSTAT0 (*(volatile unsigned *)0x1d00010)
#define rUTRSTAT1 (*(volatile unsigned *)0x1d04010)
#define rUERSTAT0 (*(volatile unsigned *)0x1d00014)
#define rUERSTAT1 (*(volatile unsigned *)0x1d04014)
#define rUFSTAT0  (*(volatile unsigned *)0x1d00018)
#define rUFSTAT1  (*(volatile unsigned *)0x1d04018)
#define rUMSTAT0  (*(volatile unsigned *)0x1d0001c)
#define rUMSTAT1  (*(volatile unsigned *)0x1d0401c)
#define rUBRDIV0  (*(volatile unsigned *)0x1d00028)
#define rUBRDIV1  (*(volatile unsigned *)0x1d04028)

#ifdef __BIG_ENDIAN
#define rUTXH0                       (*(volatile unsigned char *)0x1d00023)
#define rUTXH1                       (*(volatile unsigned char *)0x1d04023)
#define rURXH0                       (*(volatile unsigned char *)0x1d00027)
#define rURXH1                       (*(volatile unsigned char *)0x1d04027)
#define WrUTXH0(ch)   (*(volatile unsigned char *)(0x1d00023))=(unsigned char)(ch)
#define WrUTXH1(ch)   (*(volatile unsigned char *)(0x1d04023))=(unsigned char)(ch)
#define RdURXH0()     (*(volatile unsigned char *)(0x1d00027))
#define RdURXH1()     (*(volatile unsigned char *)(0x1d04027))
#define UTXH0                        (0x1d00020+3) //byte_access address by BDMA
#define UTXH1                        (0x1d04020+3)
#define URXH0                        (0x1d00024+3)
#define URXH1                        (0x1d04024+3)
#else //Little Endian
#define rUTXH0                       (*(volatile unsigned char *)0x1d00020)
#define rUTXH1                       (*(volatile unsigned char *)0x1d04020)
#define rURXH0                       (*(volatile unsigned char *)0x1d00024)
#define rURXH1                       (*(volatile unsigned char *)0x1d04024)
#define WrUTXH0(ch)   (*(volatile unsigned char *)0x1d00020)=(unsigned char)(ch)
#define WrUTXH1(ch)   (*(volatile unsigned char *)0x1d04020)=(unsigned char)(ch)
#define RdURXH0()     (*(volatile unsigned char *)0x1d00024)
#define RdURXH1()     (*(volatile unsigned char *)0x1d04024)
#define UTXH0                        (0x1d00020) //byte_access address by BDMA
#define UTXH1                        (0x1d04020)
#define URXH0                        (0x1d00024)
#define URXH1                        (0x1d04024)
#endif

//uart init macros
/*The default transfer mode is BDMA*/

#define MCLK 60000000
#define init_uart0(baud)\
	rULCON0=0x3;/*数据位为8位，无校验位，1位停止位i*/\
	rUCON0=0x24a;/*默认使用DMA*/\
	rUFCON0=0x0;\
	rUMCON0=0;\
	rUBRDIV0=((int)(MCLK/16.0/baud+0.5)-1)
#define init_uart1(baud)\
	rULCON1=0x3;/*数据位为8位，无校验位，1位停止位i*/\
        rUCON1=0x24f;/*默认使用DMA*/\
        rUFCON1=0x0;\
        rUMCON1=0;\
        rUBRDIV1=((int)(MCLK/16.0/baud+0.5)-1)

unsigned int uart_read(int fd,void *buf,unsigned int size);
unsigned int uart_write(int fd,const void *buf, unsigned int size);
#endif