Liam Decaster / Mbed OS PM2_Example_IRSensor

Hello there

Dependencies:   PM2_Libary

main.cpp@10:f459b443f676, 2021-03-13 (annotated)

Committer:
pmic
Date:
Sat Mar 13 17:37:03 2021 +0100
Revision:
10:f459b443f676
Parent:
9:c5e1e1facb02
Child:
11:cfc9b8e963db
Example for student with printf mbed-os 6 version.

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 7:dc463bf54be6 17 AnalogIn analogIn(PA_0);
pmic 7:dc463bf54be6 18 float dist = 0.0f;
pmic 9:c5e1e1facb02 19
boro 0:5d4d21d56334 20 int main()
boro 0:5d4d21d56334 21 {
pmic 1:4e0e4d0363d9 22 user_button.fall(&button_fall);
pmic 1:4e0e4d0363d9 23 user_button.rise(&button_rise);
pmic 6:6c1c38d4faa4 24 loop_timer.start();
pmic 9:c5e1e1facb02 25
boro 0:5d4d21d56334 26 while (true) {
pmic 9:c5e1e1facb02 27
pmic 6:6c1c38d4faa4 28 loop_timer.reset();
pmic 9:c5e1e1facb02 29
pmic 1:4e0e4d0363d9 30 /* ------------- start hacking ------------- -------------*/
pmic 9:c5e1e1facb02 31
pmic 1:4e0e4d0363d9 32 if(executeMainTask) {
pmic 9:c5e1e1facb02 33
pmic 9:c5e1e1facb02 34 dist = analogIn.read()*3.3f;
pmic 4:dcdcb25d1069 35
pmic 9:c5e1e1facb02 36 /* do only output what's really necessary, outputting "Measured value in mV: "" within the loop is no good solution */
pmic 10:f459b443f676 37 printf("Measured value in mV: %d\r\n", (static_cast<int>(dist * 1e3)));
pmic 9:c5e1e1facb02 38
pmic 6:6c1c38d4faa4 39 /* visual feedback that the main task is executed */
pmic 6:6c1c38d4faa4 40 led = !led;
pmic 9:c5e1e1facb02 41
boro 0:5d4d21d56334 42 } else {
pmic 6:6c1c38d4faa4 43 led = 0;
boro 0:5d4d21d56334 44 }
pmic 9:c5e1e1facb02 45
pmic 1:4e0e4d0363d9 46 /* ------------- stop hacking ------------- -------------*/
pmic 9:c5e1e1facb02 47
pmic 6:6c1c38d4faa4 48 int T_loop_ms = duration_cast<milliseconds>(loop_timer.elapsed_time()).count();
pmic 6:6c1c38d4faa4 49 int dT_loop_ms = Ts_ms - T_loop_ms;
pmic 7:dc463bf54be6 50 thread_sleep_for(dT_loop_ms);
boro 0:5d4d21d56334 51 }
boro 0:5d4d21d56334 52 }
pmic 9:c5e1e1facb02 53
pmic 1:4e0e4d0363d9 54 void button_fall()
pmic 1:4e0e4d0363d9 55 {
pmic 1:4e0e4d0363d9 56 user_button_timer.reset();
pmic 1:4e0e4d0363d9 57 user_button_timer.start();
pmic 1:4e0e4d0363d9 58 }
pmic 9:c5e1e1facb02 59
pmic 1:4e0e4d0363d9 60 void button_rise()
pmic 1:4e0e4d0363d9 61 {
pmic 3:aa1d854807fe 62 int t_button = duration_cast<milliseconds>(user_button_timer.elapsed_time()).count();
pmic 1:4e0e4d0363d9 63 user_button_timer.stop();
pmic 1:4e0e4d0363d9 64 if(t_button > 200) executeMainTask = !executeMainTask;
pmic 6:6c1c38d4faa4 65 }