uartprintf.c

ADUC845通过串口每隔1s向主机超级终端打印一个递增的十六进制数

																								//********************************************************************
//
// Author        : ADI - Apps            www.analog.com/MicroConverter
//
// Date          : 16 October 2003
//
// File          : 847uart.c
//
// Hardware      : ADuC845, ADuC847, ADuC848 (taking into account fact that the ADuC848 is a 16-bit ADC)
//
// Description   : sample program that performs ADC conversions in
//                 continuous mode and sends results to a PC via the
//                 UART. Operates on the RTD (PT100) on the eval board
//				   via Ain1->Ain2 ADC inputs. The switches (S4) on the
//				   eval board must be set as follows to get this program
//				   working correctly...RTD AIN1, RTD AIN2, RTD REFIN+
//				   and RTD REFIN- must be set to ON. All other switches
//				   must be off.
//********************************************************************

#include <stdio.h>
#include <ADuC845.h>    //To use this with an ADuC847 or ADuC848, simply change the
					    //header file to <ADuC847.h> or <ADuC848>
unsigned  char   test_data;
void TIC_int () interrupt 10
{	//	EA=1;
		test_data=test_data+1;
		printf("\n");
    	printf("%bX",test_data);
}

void delay(int length)
{
while (length >=0)
    length--;
}
   
void main (void)
{

    T3CON = 0x83;	//9600 Baud rate
    T3FD = 0x12;
    SCON = 0x52;


	IEIP2 = 0x04;   	//Enable TIC interrupt
	EA = 1;         	//Enable global interrupts
	TIMECON = 0xD0; 	//Count in seconds
	INTVAL =  0x01; 	//Count duration (5 second delay between temperature readings)
	delay(10000);		//Delay to allow TIC registers be written
		       		//Since TIC operates from 32.768kHz time must be given
				//to ensure the TIC registers are written to correctly.
	
    TIMECON	= 0xD3;         //Start counting, enable INTVAL counter & TIC counter
	
	 while(1);
}