Gabriel Karerangabo / Mbed 2 deprecated Blink_SwitchButton

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Dependencies:   mbed

PlayingSoundWithSpeaker.cpp@1:f2ac268b3b17, 2021-06-04 (annotated)

Committer:
kgabriel
Date:
Fri Jun 04 16:33:22 2021 +0000
Revision:
1:f2ac268b3b17
Good Program

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kgabriel 1:f2ac268b3b17 1 // Add mbed library (Mandatory)
kgabriel 1:f2ac268b3b17 2 #include "mbed.h"
kgabriel 1:f2ac268b3b17 3
kgabriel 1:f2ac268b3b17 4 // Add a yellow LED on pin 5 and initialize it to 1 (ON)
kgabriel 1:f2ac268b3b17 5 DigitalOut yellowLed(p5, 1);
kgabriel 1:f2ac268b3b17 6
kgabriel 1:f2ac268b3b17 7 // Add a red LED on pin 5 and initialize it to 0 (OFF)
kgabriel 1:f2ac268b3b17 8 DigitalOut redLed(p6, 0);
kgabriel 1:f2ac268b3b17 9
kgabriel 1:f2ac268b3b17 10 // Add a switch BUTTON on pin 8
kgabriel 1:f2ac268b3b17 11 DigitalIn switchButton(p8);
kgabriel 1:f2ac268b3b17 12
kgabriel 1:f2ac268b3b17 13 // Add a speaker
kgabriel 1:f2ac268b3b17 14 PwmOut speaker(p21);
kgabriel 1:f2ac268b3b17 15
kgabriel 1:f2ac268b3b17 16
kgabriel 1:f2ac268b3b17 17 int acceptSwitchOnAction = 1;
kgabriel 1:f2ac268b3b17 18
kgabriel 1:f2ac268b3b17 19 void play_tone(float frequency, float volume, int interval, int rest) {
kgabriel 1:f2ac268b3b17 20 speaker.period(1.0 / frequency);
kgabriel 1:f2ac268b3b17 21 speaker = volume;
kgabriel 1:f2ac268b3b17 22 wait_ms(interval);
kgabriel 1:f2ac268b3b17 23 speaker = 0.0;
kgabriel 1:f2ac268b3b17 24 wait(rest);
kgabriel 1:f2ac268b3b17 25 }
kgabriel 1:f2ac268b3b17 26
kgabriel 1:f2ac268b3b17 27 void control_leds() {
kgabriel 1:f2ac268b3b17 28 if (switchButton) { // When SwitchButton ON
kgabriel 1:f2ac268b3b17 29 if (acceptSwitchOnAction) {
kgabriel 1:f2ac268b3b17 30 int yellowBlinkingTimeCounter = 0;
kgabriel 1:f2ac268b3b17 31 while (yellowBlinkingTimeCounter < 5) {
kgabriel 1:f2ac268b3b17 32 yellowLed = !yellowLed; // inverse the state of the LED
kgabriel 1:f2ac268b3b17 33 yellowBlinkingTimeCounter++; // Increment counter
kgabriel 1:f2ac268b3b17 34 play_tone(250, 0.2, 500, 0); ; // subprogram play sound
kgabriel 1:f2ac268b3b17 35 wait_ms(500);
kgabriel 1:f2ac268b3b17 36 }
kgabriel 1:f2ac268b3b17 37 yellowLed = 0; // Yellow LED is OFF
kgabriel 1:f2ac268b3b17 38 acceptSwitchOnAction = 0;
kgabriel 1:f2ac268b3b17 39 }
kgabriel 1:f2ac268b3b17 40 } else { // When SwitchButton OFF
kgabriel 1:f2ac268b3b17 41 yellowLed = 1; // Yellow LED is ON
kgabriel 1:f2ac268b3b17 42 acceptSwitchOnAction = 1;
kgabriel 1:f2ac268b3b17 43 }
kgabriel 1:f2ac268b3b17 44 redLed = !yellowLed; // Inverse the state of yellow LED
kgabriel 1:f2ac268b3b17 45 }
kgabriel 1:f2ac268b3b17 46
kgabriel 1:f2ac268b3b17 47 int main() {
kgabriel 1:f2ac268b3b17 48 while (1) { // Do forever
kgabriel 1:f2ac268b3b17 49 control_leds(); // subprogram control leds
kgabriel 1:f2ac268b3b17 50 if (redLed) {
kgabriel 1:f2ac268b3b17 51 play_tone(250, 0.2, 500, 0); // subprogram play sound
kgabriel 1:f2ac268b3b17 52 } else {
kgabriel 1:f2ac268b3b17 53 wait_ms(500); // Sleep (duty-cycling)
kgabriel 1:f2ac268b3b17 54 }
kgabriel 1:f2ac268b3b17 55 }
kgabriel 1:f2ac268b3b17 56 }