16c554.h

16C554VX1128MAX4359-MAX4456P89LPC952 驱动开发

#define uchar unsigned char
#define uint unsigned int

//通用寄存器
#define RHR 0x00
#define THR 0x00
#define IER 0x01
#define FCR 0x02
#define ISR 0x02
#define LCR 0x03
#define MCR 0x04
#define LSR 0x05
#define MSR 0x06
#define SPR 0x07

//特殊寄存器
#define DLL 0x00
#define DLM 0x01

//增强寄存器
#define EFR 0x02 
#define Xon_1 0x04
#define Xon_2 0x05 
#define Xoff_1 0x06 
#define Xoff_2 0x07 

#define DLL_DATA 0xa2 //定义554UART分频系数,在25M 时,波特率为9600BPS
#define DLM_DATA 0x00
/*
//对串口的片选地址定义
#define S1 0x08
#define S2 0x18
#define S3 0x28
#define S4 0x38
#define S5 0x00
#define S6 0x10
#define S7 0x20
#define S8 0x30
*/

//定义对MAX3160的485/232的选择
sbit Serial_M1 = P1^6;
sbit Serial_M2 = P1^7;
sbit Serial_M3 = P2^0;
sbit Serial_M4 = P2^1;
sbit Serial_M5 = P2^2;
sbit Serial_M6 = P2^3;
sbit Serial_M7 = P2^4;
sbit Serial_M8 = P2^5;

void SC16C554_Write(unsigned char Reg, unsigned char Val);
unsigned char SC16C554_Read(unsigned char Reg);
void SC16C554_SET(uchar PortID,uint baudrate);
unsigned char com_rbuflen554(void);
char com_getchar554(uchar *ch);