Liam Decaster / Mbed OS PM2_Example_IRSensor

Hello there

Dependencies:   PM2_Libary

main.cpp@1:4e0e4d0363d9, 2021-03-12 (annotated)

Committer:
pmic
Date:
Fri Mar 12 15:50:14 2021 +0000
Revision:
1:4e0e4d0363d9
Parent:
0:5d4d21d56334
Child:
2:4ba1937ce284
First commit.

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 1:4e0e4d0363d9 4 #define pi 3.14159265358979323846
pmic 1:4e0e4d0363d9 5
pmic 1:4e0e4d0363d9 6 InterruptIn user_button(USER_BUTTON);
pmic 1:4e0e4d0363d9 7 DigitalOut led(LED1);
pmic 1:4e0e4d0363d9 8 Serial pc(SERIAL_TX, SERIAL_RX);
boro 0:5d4d21d56334 9
pmic 1:4e0e4d0363d9 10 bool executeMainTask = false;
pmic 1:4e0e4d0363d9 11 Timer user_button_timer, loop_timer;
pmic 1:4e0e4d0363d9 12 int Ts_ms = 50;
boro 0:5d4d21d56334 13
pmic 1:4e0e4d0363d9 14 void button_fall();
pmic 1:4e0e4d0363d9 15 void button_rise();
boro 0:5d4d21d56334 16
pmic 1:4e0e4d0363d9 17 AnalogIn analogIn(PA_0);
pmic 1:4e0e4d0363d9 18 float dist = 0.0f;
boro 0:5d4d21d56334 19
boro 0:5d4d21d56334 20 int main()
boro 0:5d4d21d56334 21 {
pmic 1:4e0e4d0363d9 22 pc.baud(115200);
pmic 1:4e0e4d0363d9 23 user_button.fall(&button_fall);
pmic 1:4e0e4d0363d9 24 user_button.rise(&button_rise);
pmic 1:4e0e4d0363d9 25 loop_timer.reset();
boro 0:5d4d21d56334 26
boro 0:5d4d21d56334 27 while (true) {
pmic 1:4e0e4d0363d9 28
pmic 1:4e0e4d0363d9 29 /* ------------- start hacking ------------- -------------*/
boro 0:5d4d21d56334 30
pmic 1:4e0e4d0363d9 31 if(executeMainTask) {
pmic 1:4e0e4d0363d9 32 dist = analogIn.read()*3.3f;
pmic 1:4e0e4d0363d9 33 printf("measurement: %9.6f\r\n", dist);
boro 0:5d4d21d56334 34 } else {
boro 0:5d4d21d56334 35
boro 0:5d4d21d56334 36 }
pmic 1:4e0e4d0363d9 37
pmic 1:4e0e4d0363d9 38 /* ------------- stop hacking ------------- -------------*/
pmic 1:4e0e4d0363d9 39
pmic 1:4e0e4d0363d9 40 if(executeMainTask) {
pmic 1:4e0e4d0363d9 41 led = !led;
pmic 1:4e0e4d0363d9 42 }
pmic 1:4e0e4d0363d9 43 int dT_loop = Ts_ms - loop_timer.read_ms();
pmic 1:4e0e4d0363d9 44 thread_sleep_for(dT_loop);
boro 0:5d4d21d56334 45 }
boro 0:5d4d21d56334 46 }
pmic 1:4e0e4d0363d9 47
pmic 1:4e0e4d0363d9 48 void button_fall()
pmic 1:4e0e4d0363d9 49 {
pmic 1:4e0e4d0363d9 50 user_button_timer.reset();
pmic 1:4e0e4d0363d9 51 user_button_timer.start();
pmic 1:4e0e4d0363d9 52 }
pmic 1:4e0e4d0363d9 53
pmic 1:4e0e4d0363d9 54 void button_rise()
pmic 1:4e0e4d0363d9 55 {
pmic 1:4e0e4d0363d9 56 int t_button = user_button_timer.read_ms();
pmic 1:4e0e4d0363d9 57 user_button_timer.stop();
pmic 1:4e0e4d0363d9 58 if(t_button > 200) executeMainTask = !executeMainTask;
pmic 1:4e0e4d0363d9 59 }