acan.h

在ARM平台上开发的LCD驱动程序,具有很强的通用性.

#define 		UART_THR(uart_base)		(uart_base+0x00)
#define 		UART_RBR(uart_base)		(uart_base+0x00)
#define 		UART_DLL(uart_base)		(uart_base+0x00)
#define 		UART_DLH(uart_base)		(uart_base+0x04)    
#define 		UART_IER(uart_base)		(uart_base+0x04)	
#define 		UART_IIR(uart_base)		(uart_base+0x08)
#define 		UART_FCR(uart_base)		(uart_base+0x08)
#define 		UART_LCR(uart_base)		(uart_base+0x0c)
#define 		UART_MCR(uart_base)		(uart_base+0x10)
#define 		UART_LSR(uart_base)		(uart_base+0x14)
#define 		UART_MSR(uart_base)		(uart_base+0x18)


#define			STA_ERR					0x03	//uart interrupt
#define			REC_FUL					0x02
#define			REC_TMO					0x06
#define			TRA_EMP					0x01
#define			MOD_ERR					0x00

#define 		EN_UART_REC(uart_base)	do{*(RP)UART_IER(uart_base) |= 0x01;}while(0)	//enable receive interrupt; 	
#define 		DIS_UART_REC(uart_base)	do{*(RP)UART_IER(uart_base) &= 0xfe;}while(0)	//disable receive interrupt;
#define 		EN_UART_TRA(uart_base)	do{*(RP)UART_IER(uart_base) |= 0x02;}while(0)	//enable transmit interrupt; 	
#define 		DIS_UART_TRA(uart_base)	do{*(RP)UART_IER(uart_base) &= 0xfd;}while(0)	//disable transmit interrupt;






#ifndef	TRUE
#define TRUE			1
#define FALSE			!TRUE
#endif






extern int init_scan(void);	
extern int serv_scan(void);
extern int scan_rec_ful_handler(void);
extern int scan_rec_tmo_handler(void);
extern void ENT_INT_SCAN( void );