uart.h

interface usb microcontroller with pc

//*************************************************************************
//
//                  P H I L I P S   P R O P R I E T A R Y
//
//           COPYRIGHT (c)   2004 BY PHILIPS SEMICONDUCTORS
//                     --  ALL RIGHTS RESERVED  --
//
// File Name:	UART.h
// Created:		April 16, 2004
// Modified:	Handoko (Hans) Chendra
// Revision: 	1.00
//
//*************************************************************************

#define MCU_COMMAND 0xFF	// dummy address

#define MRA      0x00 	// R/W : mode register UART A
#define SRA      0x01 	// R   : status register A
#define CSRA	  0x01   // W   : clock select register A
#define BRGA     0x02	// R   : BRG test A
#define CRA	     0x02   // W   : command register A
#define RHRA	  0x03	// R   : Rx holding register A
#define THRA	  0x03   // W   : Tx holding register A
#define IPCR	  0x04	// R   : input port change register
#define ACR	     0x04   // W   : aux. control register
#define ISR	     0x05	// R   : interrupt status register
#define IMR	     0x05   // W   : interrupt mask register
#define CTU	     0x06	// R   : C/T upper output register
#define CTUP	  0x06	// W   : C/T upper preset register
#define CTL 	  0x07	// R   : C/T lower output register
#define CTLP 	  0x07	// W   : C/T lower preset register

#define MRB      0x08	// R/W : mode register UART B
#define SRB      0x09   // R   : status register B
#define CSRB	  0x09   // W   : clock select register B
#define XTEST    0x0A   // R   : 1X/16X test
#define CRB	     0x0A   // W   : command register B
#define RHRB	  0x0B   // R   : Rx holding register B
#define THRB	  0x0B   // W   : Tx holding register B
#define INTV	  0x0C   // R/W : interrupt vector (68K mode)
#define IPR 	  0x0D   // R   : input port
#define OPCR	  0x0D   // W   : output port conf. register
#define STARTCNT 0x0E   // R   : start counter
#define SOPR	  0x0E   // W   : set output port bits command
#define STOPCNT  0x0F   // R   : stop counter
#define ROPR     0x0F   // W   : reset output port bits command

// UART Address pin
sbit A0 = P2^0; 
sbit A1 = P2^1;
sbit A2 = P2^2;
sbit A3 = P2^3;

sbit UART_RESET = P3^5;  // UART reset pin
sbit UART_CEN   = P1^2;    // UART chip enable pin

void Uart_Write(unsigned char Reg, unsigned char val);
unsigned char Uart_Read(unsigned char Reg);
void Uart_Reset(void);