Samuel Rusterholz / Mbed OS PM2_Example_IRSensor

Workshop 1

Dependencies:   PM2_Libary

main.cpp@11:cfc9b8e963db, 2021-03-13 (annotated)

Committer:
pmic
Date:
Sat Mar 13 17:37:49 2021 +0100
Revision:
11:cfc9b8e963db
Parent:
10:f459b443f676
Child:
13:5d689f89d794
This is what the students download.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
boro 0:5d4d21d56334 1 #include "mbed.h"
boro 0:5d4d21d56334 2 #include "platform/mbed_thread.h"
pmic 9:c5e1e1facb02 3
pmic 3:aa1d854807fe 4 using namespace std::chrono;
pmic 9:c5e1e1facb02 5
pmic 7:dc463bf54be6 6 InterruptIn user_button(USER_BUTTON);
pmic 7:dc463bf54be6 7 DigitalOut led(LED1);
pmic 9:c5e1e1facb02 8
pmic 7:dc463bf54be6 9 bool executeMainTask = false;
pmic 7:dc463bf54be6 10 Timer user_button_timer, loop_timer;
pmic 7:dc463bf54be6 11 int Ts_ms = 50;
pmic 9:c5e1e1facb02 12
pmic 7:dc463bf54be6 13 void button_fall();
pmic 7:dc463bf54be6 14 void button_rise();
pmic 5:887081decd5c 15
pmic 9:c5e1e1facb02 16 /* input your stuff here */
pmic 11:cfc9b8e963db 17
pmic 9:c5e1e1facb02 18
boro 0:5d4d21d56334 19 int main()
boro 0:5d4d21d56334 20 {
pmic 1:4e0e4d0363d9 21 user_button.fall(&button_fall);
pmic 1:4e0e4d0363d9 22 user_button.rise(&button_rise);
pmic 6:6c1c38d4faa4 23 loop_timer.start();
pmic 9:c5e1e1facb02 24
boro 0:5d4d21d56334 25 while (true) {
pmic 9:c5e1e1facb02 26
pmic 6:6c1c38d4faa4 27 loop_timer.reset();
pmic 9:c5e1e1facb02 28
pmic 1:4e0e4d0363d9 29 /* ------------- start hacking ------------- -------------*/
pmic 9:c5e1e1facb02 30
pmic 1:4e0e4d0363d9 31 if(executeMainTask) {
pmic 11:cfc9b8e963db 32
pmic 4:dcdcb25d1069 33
pmic 11:cfc9b8e963db 34
pmic 6:6c1c38d4faa4 35 /* visual feedback that the main task is executed */
pmic 6:6c1c38d4faa4 36 led = !led;
pmic 9:c5e1e1facb02 37
boro 0:5d4d21d56334 38 } else {
pmic 6:6c1c38d4faa4 39 led = 0;
boro 0:5d4d21d56334 40 }
pmic 9:c5e1e1facb02 41
pmic 1:4e0e4d0363d9 42 /* ------------- stop hacking ------------- -------------*/
pmic 9:c5e1e1facb02 43
pmic 6:6c1c38d4faa4 44 int T_loop_ms = duration_cast<milliseconds>(loop_timer.elapsed_time()).count();
pmic 6:6c1c38d4faa4 45 int dT_loop_ms = Ts_ms - T_loop_ms;
pmic 7:dc463bf54be6 46 thread_sleep_for(dT_loop_ms);
boro 0:5d4d21d56334 47 }
boro 0:5d4d21d56334 48 }
pmic 9:c5e1e1facb02 49
pmic 1:4e0e4d0363d9 50 void button_fall()
pmic 1:4e0e4d0363d9 51 {
pmic 1:4e0e4d0363d9 52 user_button_timer.reset();
pmic 1:4e0e4d0363d9 53 user_button_timer.start();
pmic 1:4e0e4d0363d9 54 }
pmic 9:c5e1e1facb02 55
pmic 1:4e0e4d0363d9 56 void button_rise()
pmic 1:4e0e4d0363d9 57 {
pmic 3:aa1d854807fe 58 int t_button = duration_cast<milliseconds>(user_button_timer.elapsed_time()).count();
pmic 1:4e0e4d0363d9 59 user_button_timer.stop();
pmic 1:4e0e4d0363d9 60 if(t_button > 200) executeMainTask = !executeMainTask;
pmic 6:6c1c38d4faa4 61 }