Samuel Rusterholz / Mbed OS PM2_Example_IRSensor

Workshop 1

Dependencies:   PM2_Libary

main.cpp@8:49f2b6a515ac, 2021-03-13 (annotated)

Committer:
pmic
Date:
Sat Mar 13 16:53:22 2021 +0100
Revision:
8:49f2b6a515ac
Parent:
7:dc463bf54be6
Child:
9:c5e1e1facb02
Solution with printf (blocking for approx. 11 ms) .

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 1:4e0e4d0363d9 3
pmic 3:aa1d854807fe 4 using namespace std::chrono;
pmic 3:aa1d854807fe 5
pmic 7:dc463bf54be6 6 InterruptIn user_button(USER_BUTTON);
pmic 7:dc463bf54be6 7 DigitalOut led(LED1);
boro 0:5d4d21d56334 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;
boro 0:5d4d21d56334 12
pmic 7:dc463bf54be6 13 void button_fall();
pmic 7:dc463bf54be6 14 void button_rise();
pmic 5:887081decd5c 15
pmic 7:dc463bf54be6 16 AnalogIn analogIn(PA_0);
pmic 7:dc463bf54be6 17 float dist = 0.0f;
pmic 6:6c1c38d4faa4 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();
boro 0:5d4d21d56334 24
boro 0:5d4d21d56334 25 while (true) {
pmic 1:4e0e4d0363d9 26
pmic 6:6c1c38d4faa4 27 loop_timer.reset();
pmic 6:6c1c38d4faa4 28
pmic 1:4e0e4d0363d9 29 /* ------------- start hacking ------------- -------------*/
boro 0:5d4d21d56334 30
pmic 1:4e0e4d0363d9 31 if(executeMainTask) {
pmic 4:dcdcb25d1069 32
pmic 6:6c1c38d4faa4 33 dist = analogIn.read()*3.3f;
pmic 4:dcdcb25d1069 34
pmic 8:49f2b6a515ac 35 printf("Measval: %d\r\n", (static_cast<int>(dist * 1000)));
pmic 4:dcdcb25d1069 36
pmic 6:6c1c38d4faa4 37 /* visual feedback that the main task is executed */
pmic 6:6c1c38d4faa4 38 led = !led;
pmic 4:dcdcb25d1069 39
boro 0:5d4d21d56334 40 } else {
pmic 6:6c1c38d4faa4 41 led = 0;
boro 0:5d4d21d56334 42 }
pmic 1:4e0e4d0363d9 43
pmic 1:4e0e4d0363d9 44 /* ------------- stop hacking ------------- -------------*/
pmic 1:4e0e4d0363d9 45
pmic 6:6c1c38d4faa4 46 int T_loop_ms = duration_cast<milliseconds>(loop_timer.elapsed_time()).count();
pmic 6:6c1c38d4faa4 47 int dT_loop_ms = Ts_ms - T_loop_ms;
pmic 7:dc463bf54be6 48 thread_sleep_for(dT_loop_ms);
boro 0:5d4d21d56334 49 }
boro 0:5d4d21d56334 50 }
pmic 1:4e0e4d0363d9 51
pmic 1:4e0e4d0363d9 52 void button_fall()
pmic 1:4e0e4d0363d9 53 {
pmic 1:4e0e4d0363d9 54 user_button_timer.reset();
pmic 1:4e0e4d0363d9 55 user_button_timer.start();
pmic 1:4e0e4d0363d9 56 }
pmic 1:4e0e4d0363d9 57
pmic 1:4e0e4d0363d9 58 void button_rise()
pmic 1:4e0e4d0363d9 59 {
pmic 3:aa1d854807fe 60 int t_button = duration_cast<milliseconds>(user_button_timer.elapsed_time()).count();
pmic 1:4e0e4d0363d9 61 user_button_timer.stop();
pmic 1:4e0e4d0363d9 62 if(t_button > 200) executeMainTask = !executeMainTask;
pmic 6:6c1c38d4faa4 63 }