A Small Multi-Tasking Operation System Using 8051: uart.h Source File

00001 #ifndef UART_H
00002 #define UART_H
00003 
00004 #define UART_KEY_BUFFER_EMPTY 0
00005 #define UART_KEY_BUFFER_NOT_FULL 1
00006 #define UART_KEY_BUFFER_FULL 2
00007 
00008 #define KEY_IN_BUFFER_SIZE  10
00009 typedef struct UART_CONTROL{
00010     INT8U  KeyInBuffer[KEY_IN_BUFFER_SIZE];
00011     INT8U  KeyInGet;
00012     INT8U  KeyInPut;
00013 };
00014 extern struct UART_CONTROL UartCtrl;
00015 extern bit bUartTransfer;  
00016 extern void F_UartPowerOnInit()           LargeReentrant;
00017 extern void F_UartKeyInPut(INT8U KeyCode) LargeReentrant;
00018 extern INT8U F_UartKeyInGet()             LargeReentrant;
00019 extern INT8U F_UartCheckKeyInBuffer()     LargeReentrant;
00020 extern char putchar(char)                 LargeReentrant;
00021 extern char getchar(void)                 LargeReentrant;
00022 
00023 #endif