rs232.h

来自「关于ETR100的设计」· C头文件 代码 · 共 22 行

#if !defined( _RS232_H )
#define _RS232_H

#define	COM1	0
#define	COM2	1
#define	COM3	2
#define	COM4	3
#define	COM5	4

int InitUART( int PortNum, int BaudIdx );
int InstallISR( int PortNum );
int UninstallISR( int PortNum );

// return =  0: ok
//        = -1: output buffer full
int  PutOutputData( char abyte );
void StartSend( );

// return = -1: no data available
int  GetInputData( );

#endif