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PCD
///
this demo makes use of the PIC18F452 prototyping board
///
/////////////////////////////////////////////////////////////////
#include <18F452.h>
#use delay(clock=20000000)
#use rs232(baud=9600,xmit=PIN_C6,rcv=PIN_C7)
#use rtos(timer=0,minor_cycle=100ms)
#define RED PIN_B5
#define GREEN PIN_A5
#include <string.h>
// this character array will be used to take input from the prompt
char input [ 30 ];
// this will hold the current position in the array
int index;
// this will signal to the kernal that input is ready to be processed
int1 input_ready;
// different commands
char en1 [ ] = "enable1";
char en2 [ ] = "enable2";
char dis1 [ ] = "disable1";
char dis2 [ ] = "disable2";
#task(rate=1000ms,max=100ms)
void The_first_rtos_task ( );
#task(rate=1000ms,max=100ms)
void The_second_rtos_task ( );
#task(rate=500ms,max=100ms)
void The_kernal ( );
// serial interupt
#int_rda
void serial_interrupt ( )
{
if(index<29) {
reg
364
input [ index ] = getc ( );
putc ( input [ index ] );
if(input[index]==0x0d){
putc('\n');
input [ index ] = '\0';
input_ready=TRUE;
index=0;
}
else if (input[index]==0x08){
if ( index > 1 ) {
putc(' ');
putc(0x08);
index-=2;
}
}
index++;
}
else {
putc ( '\n' );
putc ( '\r' );
input [ index ] = '\0';
index = 0;
input_ready = TRUE;
}
// get the value in the serial recieve
// display it on the screen
// if the input was enter
// add the null character
// set the input read variable to true
// and reset the index
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