University of Plymouth - Stages 1, 2 and 3 / Mbed OS Task330_polling

Example solution of rapid polling (with C++)

Fork of Task330_polling by University of Plymouth - Stages 1, 2 and 3

main.cpp@2:4cf6f5cba257, 2019-09-18 (annotated)

Committer:
noutram
Date:
Wed Sep 18 10:54:46 2019 +0000
Revision:
2:4cf6f5cba257
Parent:
1:e84a51c98d75 
2019

Who changed what in which revision?

UserRevisionLine numberNew contents of line
noutram 0:397b84c74d17 1 #include "mbed.h"
noutram 0:397b84c74d17 2 #include "SWPoll.hpp"
noutram 0:397b84c74d17 3
noutram 0:397b84c74d17 4 #define N 1000000
noutram 0:397b84c74d17 5 #define RELEASED 0
noutram 0:397b84c74d17 6 #define PRESSED 1
noutram 0:397b84c74d17 7
noutram 0:397b84c74d17 8 //Hardware objects
noutram 0:397b84c74d17 9 DigitalOut red_led(PE_15); //CountUp is in its critical section
noutram 0:397b84c74d17 10 DigitalOut yellow_led(PB_10); //CountDown is in its critical section
noutram 0:397b84c74d17 11 DigitalOut green_led(PB_11); //counter != 0
noutram 0:397b84c74d17 12 DigitalOut onboardLED(LED1);
noutram 0:397b84c74d17 13
noutram 0:397b84c74d17 14 DigitalIn button(USER_BUTTON);
noutram 0:397b84c74d17 15 DigitalIn sw1(PE_12);
noutram 0:397b84c74d17 16 DigitalIn sw2(PE_14);
noutram 0:397b84c74d17 17
noutram 0:397b84c74d17 18 SWPoll switch1(sw1, red_led);
noutram 0:397b84c74d17 19 SWPoll switch2(sw2, green_led);
noutram 0:397b84c74d17 20
noutram 1:e84a51c98d75 21 //LOOK AT SWPoll.hpp for the definition of the SWPoll class
noutram 0:397b84c74d17 22
noutram 0:397b84c74d17 23 int main() {
noutram 0:397b84c74d17 24
noutram 0:397b84c74d17 25 //Main uses a Timer
noutram 0:397b84c74d17 26 yellow_led = 1;
noutram 0:397b84c74d17 27 Timer t;
noutram 0:397b84c74d17 28
noutram 0:397b84c74d17 29 //Now loop forever
noutram 0:397b84c74d17 30 t.start();
noutram 0:397b84c74d17 31 while(1) {
noutram 0:397b84c74d17 32 //Flash the yellow on the "main thread"
noutram 0:397b84c74d17 33 if (t.read_ms() >= 500) {
noutram 0:397b84c74d17 34 yellow_led = !yellow_led;
noutram 0:397b84c74d17 35 t.reset();
noutram 0:397b84c74d17 36 }
noutram 0:397b84c74d17 37 switch1.poll();
noutram 0:397b84c74d17 38 switch2.poll();
noutram 0:397b84c74d17 39
noutram 0:397b84c74d17 40 };
noutram 0:397b84c74d17 41 }
noutram 0:397b84c74d17 42
noutram 0:397b84c74d17 43