Chapter 4 Software Development
page 4-25
Sample Port 7 Control Program/* Sample program(Port7) */
/* Filename:port7exp.c */
/* Copyright(C) 1999 TECHNOCOLLAGE,Inc. All rights reserved. */
#include<stdio.h>
#include<stdlib.h>
#include<m66573.h>
void main(void)
{int i = 0;
unsigned int j = 0;
std_init_573();/* Initialize MSM66Q573 and the port */
P7 = 0x00; /* 0000_-000 */ /* Clear output data. 00B = orange */
P7IO = 0xC2; /* 1100_-010 */ /* Configure Port 7 pin 1 for output */
P7SF = 0x03; /* 0000_-011 */ /* Configure Port 7 pins 1 and 0 for secondary function
*/
S0BUF = 0x0A;
printf_c(" LED should now be orange \n");
/* Time waster (sleep) */
for(i=0;i<10;i++)
{for(j=0;j<65535;j++);
}
printf_c(" LED should now be green \n");
P7_7 = 0; /* 01B = green */
P7_6 = 1;
/* Time waster (sleep) */
for(i=0;i<10;i++)
{
for(j=0;j<65535;j++);
}
printf_c(" LED should now be red \n");
P7_7 = 1;
P7_6 = 0; /* 10B = red */
}