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PCD
int i;
rtos_wait(sem);
for(i=0;i<5;i++){
output_high(RED); delay_ms(20); output_low(RED);
rtos_yield ( );
}
rtos_signal(sem);
}
void main ( ) {
// sem is initialized to the number of users allowed by the resource
// in the case of the LED and most other resources that limit is one
sem=1;
rtos_run();
}
/////////////////////////////////////////////////////////////////
///
This file demonstrates how to use the real time
///
///
///
operating systems await function
///
///
///
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
int8 count;
#task(rate=1000ms,max=100ms,queue=2)
void The_first_rtos_task ( );
#task(rate=1000ms,max=100ms,queue=2)
void The_second_rtos_task ( );
void The_first_rtos_task ( ) {
// rtos_await simply waits for the given expression to be true
// if it is not true, it acts like an rtos_yield and passes the system
// to the next task
rtos_await(count==10);
output_low(GREEN); delay_ms(20); output_high(GREEN);
count=0;
}
void The_second_rtos_task ( ) {
output_low(RED); delay_ms(20); output_high(RED);
count++;
}
void main ( ) {
count=0;
rtos_run();
}
/////////////////////////////////////////////////////////////////
///
This file demonstrates how to use the real time
///
///
///
operating systems statistics features
///
///
///
362
this demo makes use of the PIC18F452 prototyping board
///
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