uart.h

本程序是基于单片机C8051F020上使用SL811 USB 总线接口实现检测U 盘的功能。插上U 盘

typedef unsigned char    INT8U;
#define  R_BYTE  unsigned char data
#define  BYTE  unsigned char

#define  SYSCLK     22118400        //SYSCLK frequency in Hz

#define BaudRate_1200    1		//1*1200
#define BaudRate_2400    2		//2*1200
#define BaudRate_4800    4		//4*1200
#define BaudRate_9600    8		//8*1200
#define BaudRate_19200   16		//16*1200
#define BaudRate_38400   32		//32*1200
#define BaudRate_57600   48		//48*1200
#define BaudRate_115200  96		//96*1200

#define RI1  SCON1&0x01
#define TI1  SCON1&0x02

#define  WDT_CLOSE     EA=0; WDTCN=0xde; WDTCN=0xad; EA=1;
#define  WDT_OPEN      WDTCN = 0xff;
#define  WDT_CLR       WDTCN = 0xa5;

#define  bool   unsigned char



void Uart0_Init(BYTE BaudRate);
void Uart0_Enable(bool Flag);

void Uart0_SendByte(unsigned char value);
void Uart0_SendString(unsigned char *pt);
unsigned char Uart0_ReceiveData(void);
 
void Uart1_Init(BYTE BaudRate);
void Uart1_Enable(bool Flag);
void Uart1_SendByte(unsigned char value);
void Uart1_SendString(unsigned char *pt);
unsigned char Uart1_ReceiveData(void);