intrins.h

/*--------------------------------------------------------------------------
INTRINS.H

Intrinsic functions for C51.
Copyright (c) 1988-2004 Keil Elektronik GmbH and Keil Software, Inc.
All rights reserved.
--------------------------------------------------------------------------*/

#ifndef __INTRINS_H__
#define __INTRINS_H__

extern void          _nop_     (void);
extern bit           _testbit_ (bit);
extern unsigned char _cror_    (unsigned char, unsigned char);
extern unsigned int  _iror_    (unsigned int,  unsigned char);
extern unsigned long _lror_    (unsigned long, unsigned char);
extern unsigned char _crol_    (unsigned char, unsigned char);
extern unsigned int  _irol_    (unsigned int,  unsigned char);
extern unsigned long _lrol_    (unsigned long, unsigned char);
extern unsigned char _chkfloat_(float);
extern void          _push_    (unsigned char _sfr);
extern void          _pop_     (unsigned char _sfr);

#endif

reg52.h

/*--------------------------------------------------------------------------
REG52.H

Header file for generic 80C52 and 80C32 microcontroller.
Copyright (c) 1988-2002 Keil Elektronik GmbH and Keil Software, Inc.
All rights reserved.
--------------------------------------------------------------------------*/

#ifndef __REG52_H__
#define __REG52_H__

/*  BYTE Registers  */
sfr P0    = 0x80;
sfr P1    = 0x90;
sfr P2    = 0xA0;
sfr P3    = 0xB0;
sfr PSW   = 0xD0;
sfr ACC   = 0xE0;
sfr B     = 0xF0;
sfr SP    = 0x81;
sfr DPL   = 0x82;
sfr DPH   = 0x83;
sfr PCON  = 0x87;
sfr TCON  = 0x88;
sfr TMOD  = 0x89;
sfr TL0   = 0x8A;
sfr TL1   = 0x8B;
sfr TH0   = 0x8C;
sfr TH1   = 0x8D;
sfr IE    = 0xA8;
sfr IP    = 0xB8;
sfr SCON  = 0x98;
sfr SBUF  = 0x99;

/*  8052 Extensions  */
sfr T2CON  = 0xC8;
sfr RCAP2L = 0xCA;
sfr RCAP2H = 0xCB;
sfr TL2    = 0xCC;
sfr TH2    = 0xCD;


/*  BIT Registers  */
/*  PSW  */
sbit CY    = PSW^7;
sbit AC    = PSW^6;
sbit F0    = PSW^5;
sbit RS1   = PSW^4;
sbit RS0   = PSW^3;
sbit OV    = PSW^2;
sbit P     = PSW^0; //8052 only

/*  TCON  */
sbit TF1   = TCON^7;
sbit TR1   = TCON^6;
sbit TF0   = TCON^5;
sbit TR0   = TCON^4;
sbit IE1   = TCON^3;
sbit IT1   = TCON^2;
sbit IE0   = TCON^1;
sbit IT0   = TCON^0;

/*  IE  */
sbit EA    = IE^7;
sbit ET2   = IE^5; //8052 only
sbit ES    = IE^4;
sbit ET1   = IE^3;
sbit EX1   = IE^2;
sbit ET0   = IE^1;
sbit EX0   = IE^0;

/*  IP  */
sbit PT2   = IP^5;
sbit PS    = IP^4;
sbit PT1   = IP^3;
sbit PX1   = IP^2;
sbit PT0   = IP^1;
sbit PX0   = IP^0;

/*  P3  */
sbit RD    = P3^7;
sbit WR    = P3^6;
sbit T1    = P3^5;
sbit T0    = P3^4;
sbit INT1  = P3^3;
sbit INT0  = P3^2;
sbit TXD   = P3^1;
sbit RXD   = P3^0;

/*  SCON  */
sbit SM0   = SCON^7;
sbit SM1   = SCON^6;
sbit SM2   = SCON^5;
sbit REN   = SCON^4;
sbit TB8   = SCON^3;
sbit RB8   = SCON^2;
sbit TI    = SCON^1;
sbit RI    = SCON^0;

/*  P1  */
sbit T2EX  = P1^1; // 8052 only
sbit T2    = P1^0; // 8052 only
             
/*  T2CON  */
sbit TF2    = T2CON^7;
sbit EXF2   = T2CON^6;
sbit RCLK   = T2CON^5;
sbit TCLK   = T2CON^4;
sbit EXEN2  = T2CON^3;
sbit TR2    = T2CON^2;
sbit C_T2   = T2CON^1;
sbit CP_RL2 = T2CON^0;

#endif

rf1100-232.c

#include <reg52.h>
#include <intrins.h>
#define		INT8U		unsigned char
#define		INT16U		unsigned int

sfr WDT_CONTR = 0Xe1;

// buttons
sbit KEY1 = P3^6;
sbit KEY2 = P3^7;
// pins
sbit led = P2^5;
sbit led3 = P2^0;
sbit led2 = P2^1;
sbit led1 = P2^2;
sbit led0 = P2^3;

INT8U TxBuf[4];
INT8U send_f;

//when  i = 100.  delay ~ 1.5ms
static void delay(unsigned int s) {
	unsigned int i;
	for(i = 0; i < s; i++);
}


void UART_init() {
	SCON = 0x50;          // uart in mode 1 (8 bit), REN = 1
	TMOD = TMOD | 0x20 ;  // Timer 1 in mode 2
	TH1  = 0xFD;          // 9600 Bds at 11.059MHz
	TL1  = 0xFD;          // 9600 Bds at 11.059MHz
	//IE = 0x90;
	TR1 = 1;              // Timer 1 run
	ET1 = 0;
	ES = 1;               //allow serial port interrupt
	PS = 1;               // Serial port interrupt priority
	EA = 1;               // MCU Interrupt enable
}

void Sendchar(unsigned char c) {
	SBUF = c;
	while(TI == 0);
	TI = 0;
}

void print_string(unsigned char* p)	{ // send string
	while(*p != '\0') Sendchar(*p++);
}

// return a 10 digit data including a start bit 'S'
com_interrupt(void) interrupt 4 using 3 {
	if (RI) {			//handle receive interrupt
		RI = 0;			//clear the interrupt flag bit
		TxBuf[2] = SBUF;
		send_f = 1;		//set data sending flag
		led = 1;
	}
}

void main(void) {
	INT8U leng = 0;
	INT8U i,k = 0;
	INT8U RxBuf[4] = {0};	
	INT8U rxcount = 0xff;
	INT8U TxBuf[30];
	led = 1;
	TxBuf[2] = 2;
	TxBuf[3] = 0;
	UART_init();
	P0 = 0x00;
	led1 = 0;
	for(i = 0; i < 30; i++) {
		TxBuf[i] = i;
	}
	Sendchar(0xA3);  // set baud rate command
	Sendchar(0x3A);
	Sendchar(0x02);  // set baud rate to: 9600 
	delay(6000);
	Sendchar(0xA7);  // set channel command
	Sendchar(0x7A);
	Sendchar(0x00);  // set channel to:  06
	delay(6000);
	Sendchar(0xAB);  // Set power command
	Sendchar(0xBA);
	Sendchar(0x0A);  // Set power to: 10DBM
	delay(6000);
	Sendchar(0xA9);  //Set Module ID Number
	Sendchar(0x9A);
	Sendchar(0x00);  //Set Module ID number
	Sendchar(0x01);  //Set ID number
	delay(6000);
	delay(6000);
	while(1) {
		WDT_CONTR = 0x3c;
		if(KEY1 == 0) {
			delay(10);
			while(!KEY1) delay(10); //send test data when a key is detected
			led1 = 0;
			// the first frame test data string or data length should not exceed 30 bytes
			print_string("abcdefghijklmnopqrstuvwxyzABCD");
			led1 = 1;	
			delay(750);     // delay about 6 ms before sending the next frame of data
			for(i = 0; i < 23; i++) Sendchar(TxBuf[i]); // send a 23 byte data packet
			delay(750);     //delay for about 6 ms before sending the next frame of data
			Sendchar(0x66); //send single byte
		}
		delay(450);
		led1 = 1;
		delay(100);
	}
}