Kjell Kleyn / Mbed OS PGO6_VoteController_template

Vote Controller IOT

Dependencies:   MQTT

Fork of PGO6_VoteController_template by Jens de hoog

debounce_button.cpp@3:b2c9de2f45c7, 2017-11-06 (annotated)

Committer:
kjellkleyn
Date:
Mon Nov 06 14:18:21 2017 +0000
Revision:
3:b2c9de2f45c7
Parent:
2:5b7d055dbc91 
Vote Controller einde laatste les

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jensdehoog 0:fd29cd85e75e 1 #include "debounce_button.h"
kjellkleyn 3:b2c9de2f45c7 2 DigitalOut led1(LED1);
kjellkleyn 3:b2c9de2f45c7 3 Timeout second;
kjellkleyn 3:b2c9de2f45c7 4 Timeout debounce;
jensdehoog 0:fd29cd85e75e 5 /**
jensdehoog 0:fd29cd85e75e 6 Some tips and tricks:
jensdehoog 0:fd29cd85e75e 7 - To use the built-in LED:
jensdehoog 0:fd29cd85e75e 8 DigitalOut led1(LED1);
jensdehoog 0:fd29cd85e75e 9 ...
jensdehoog 0:fd29cd85e75e 10 led1 = 1;
jensdehoog 0:fd29cd85e75e 11 - To delay the call of a function:
jensdehoog 0:fd29cd85e75e 12 Timeout someTimeout;
jensdehoog 0:fd29cd85e75e 13 ...
jensdehoog 2:5b7d055dbc91 14 someTimeout.attach(callback(&someFunction), 0.5) with 0.5 as 500 milliseconds
jensdehoog 0:fd29cd85e75e 15 - The variables that are used in interrupt callbacks have to be volatile,
jensdehoog 0:fd29cd85e75e 16 because these variables can change at any time. Therefore, the compiler is not
jensdehoog 0:fd29cd85e75e 17 going to make optimisations.
jensdehoog 0:fd29cd85e75e 18 */
jensdehoog 0:fd29cd85e75e 19
jensdehoog 0:fd29cd85e75e 20 /**
jensdehoog 2:5b7d055dbc91 21 TODO
jensdehoog 2:5b7d055dbc91 22 ----
jensdehoog 2:5b7d055dbc91 23 This function:
jensdehoog 2:5b7d055dbc91 24 - stores the amount of clicks in a variable which is read by the main loop.
jensdehoog 2:5b7d055dbc91 25 - resets the click counter which is used inside this file.
jensdehoog 2:5b7d055dbc91 26 - lowers a flag which tells the main loop that the user stopped pressing the button
jensdehoog 2:5b7d055dbc91 27 such that it can proceed its program.
jensdehoog 2:5b7d055dbc91 28 - turns the built-in LED off. Therefore, the user gets informed that the program stopped counting the clicks.
jensdehoog 2:5b7d055dbc91 29 */
jensdehoog 2:5b7d055dbc91 30 void button1_multiclick_reset_cb(void) {
jensdehoog 2:5b7d055dbc91 31
jensdehoog 2:5b7d055dbc91 32 }
jensdehoog 2:5b7d055dbc91 33
jensdehoog 2:5b7d055dbc91 34 /**
jensdehoog 2:5b7d055dbc91 35 TODO
jensdehoog 2:5b7d055dbc91 36 ----
jensdehoog 2:5b7d055dbc91 37 This function enables the button again, such that unwanted clicks of the bouncing button get ignored.
jensdehoog 0:fd29cd85e75e 38 */
jensdehoog 2:5b7d055dbc91 39 void button1_enabled_cb(void)
jensdehoog 2:5b7d055dbc91 40 {
kjellkleyn 3:b2c9de2f45c7 41 button1_enabled = true;
jensdehoog 2:5b7d055dbc91 42 }
jensdehoog 0:fd29cd85e75e 43
jensdehoog 2:5b7d055dbc91 44 /**
jensdehoog 2:5b7d055dbc91 45 TODO
jensdehoog 2:5b7d055dbc91 46 ----
jensdehoog 2:5b7d055dbc91 47 This function:
jensdehoog 2:5b7d055dbc91 48 - turns the built-in LED on, so the user gets informed that the program has started with counting clicks
jensdehoog 2:5b7d055dbc91 49 - disables the button such that the debouncer is active
jensdehoog 2:5b7d055dbc91 50 - enables the button again after a certain amount of time
jensdehoog 2:5b7d055dbc91 51 (use interrupts with "button1_enabled_cb()" as callback.
jensdehoog 2:5b7d055dbc91 52 - counts the amount of clicks within a period of 1 second
jensdehoog 2:5b7d055dbc91 53 - informs the main loop that the button has been pressed
jensdehoog 2:5b7d055dbc91 54 - informs the main loop that the user is clicking the button.
jensdehoog 2:5b7d055dbc91 55 Therefore, this main loop cannot continue its procedure until the clicks within 1 second have been counted.
jensdehoog 2:5b7d055dbc91 56 */
jensdehoog 0:fd29cd85e75e 57 void button1_onpressed_cb(void)
jensdehoog 0:fd29cd85e75e 58 {
kjellkleyn 3:b2c9de2f45c7 59 if(button1_enabled){
kjellkleyn 3:b2c9de2f45c7 60 button1_enabled = false;
kjellkleyn 3:b2c9de2f45c7 61 debounce.attach(&button1_enabled_cb,0.08);
kjellkleyn 3:b2c9de2f45c7 62
kjellkleyn 3:b2c9de2f45c7 63 if(countSecond == false){
kjellkleyn 3:b2c9de2f45c7 64 led1 = 1;
kjellkleyn 3:b2c9de2f45c7 65 multiclick_state = 1;
kjellkleyn 3:b2c9de2f45c7 66 countSecond = true;
kjellkleyn 3:b2c9de2f45c7 67 }
kjellkleyn 3:b2c9de2f45c7 68 else{
kjellkleyn 3:b2c9de2f45c7 69 multiclick_state++;
kjellkleyn 3:b2c9de2f45c7 70 }
kjellkleyn 3:b2c9de2f45c7 71 second.attach(&second_ended_cd,1);
kjellkleyn 3:b2c9de2f45c7 72
kjellkleyn 3:b2c9de2f45c7 73 }
kjellkleyn 3:b2c9de2f45c7 74 }
jensdehoog 0:fd29cd85e75e 75
kjellkleyn 3:b2c9de2f45c7 76 void second_ended_cd(void)
kjellkleyn 3:b2c9de2f45c7 77 {
kjellkleyn 3:b2c9de2f45c7 78 led1 = 0;
kjellkleyn 3:b2c9de2f45c7 79 countSecond = false;
kjellkleyn 3:b2c9de2f45c7 80 readyClick =true;
jensdehoog 0:fd29cd85e75e 81 }