EdgeBotix / Mbed 2 deprecated eBot_Firmware_V1

Initial Commit

Dependencies:   mbed HC05 QEI MODSERIAL SWSPI mbed-rtos

Drivers/Tone/tone.cpp@6:5ab1735265a9, 2014-10-21 (annotated)

Committer:
harshb
Date:
Tue Oct 21 21:59:15 2014 +0000
Revision:
6:5ab1735265a9
Parent:
4:81b0de07841f 
Initial Commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Throwbot 1:1da89c13dfa1 1 #include "tone.h"
Throwbot 1:1da89c13dfa1 2
Throwbot 1:1da89c13dfa1 3 DigitalOut speakerOut(buzz); // Set up speaker on digital pin 7
Throwbot 1:1da89c13dfa1 4
Throwbot 1:1da89c13dfa1 5 // MELODIES and TIMING //
Throwbot 1:1da89c13dfa1 6 // melody[] is an array of notes, accompanied by beats[],
Throwbot 1:1da89c13dfa1 7 // which sets each note's relative length (higher #, longer note)
Throwbot 1:1da89c13dfa1 8
Throwbot 1:1da89c13dfa1 9 // Melody 1: Star Wars Imperial March
Throwbot 1:1da89c13dfa1 10 int melody1[] = { a4, R, a4, R, a4, R, f4, R, c5, R, a4, R, f4, R, c5, R, a4, R, e5, R, e5, R, e5, R, f5, R, c5, R, g5, R, f5, R, c5, R, a4, R};
Throwbot 1:1da89c13dfa1 11 int beats1[] = { 50, 20, 50, 20, 50, 20, 40, 5, 20, 5, 60, 10, 40, 5, 20, 5, 60, 80, 50, 20, 50, 20, 50, 20, 40, 5, 20, 5, 60, 10, 40, 5, 20, 5, 60, 40};
Throwbot 1:1da89c13dfa1 12
Throwbot 1:1da89c13dfa1 13 // Melody 2: Star Wars Theme
Throwbot 1:1da89c13dfa1 14 int melody2[] = { f4, f4, f4, a4s, f5, d5s, d5, c5, a5s, f5, d5s, d5, c5, a5s, f5, d5s, d5, d5s, c5};
Throwbot 1:1da89c13dfa1 15 int beats2[] = { 21, 21, 21, 128, 128, 21, 21, 21, 128, 64, 21, 21, 21, 128, 64, 21, 21, 21, 128 };
Throwbot 1:1da89c13dfa1 16
Throwbot 1:1da89c13dfa1 17 int MAX_COUNT = sizeof(melody1) / 2; // Melody length, for looping.
Throwbot 1:1da89c13dfa1 18 long tempo = 10000; // Set overall tempo
Throwbot 1:1da89c13dfa1 19 int pause = 1000; // Set length of pause between notes
Throwbot 1:1da89c13dfa1 20 int rest_count = 1; // Loop variable to increase Rest length (BLETCHEROUS HACK; See NOTES)
Throwbot 1:1da89c13dfa1 21 // Initialize core variables
Throwbot 1:1da89c13dfa1 22 int toneM = 0;
Throwbot 1:1da89c13dfa1 23 int beat = 0;
Throwbot 1:1da89c13dfa1 24 long duration = 0;
Throwbot 1:1da89c13dfa1 25 // PLAY TONE //
Throwbot 1:1da89c13dfa1 26 // Pulse the speaker to play a tone for a particular duration
Throwbot 1:1da89c13dfa1 27 void imperial_march()
Throwbot 1:1da89c13dfa1 28 {
Throwbot 4:81b0de07841f 29 for (int i=0; i<36; i++) {
Throwbot 1:1da89c13dfa1 30 toneM = melody1[i];
Throwbot 1:1da89c13dfa1 31 beat = beats1[i];
Throwbot 1:1da89c13dfa1 32 duration = beat * tempo; // Set up timing
Throwbot 1:1da89c13dfa1 33 long elapsed_time = 0;
Throwbot 1:1da89c13dfa1 34 if (toneM > 0) { // if this isn't a Rest beat, while the tone has
Throwbot 1:1da89c13dfa1 35 // played less long than 'duration', pulse speaker HIGH and LOW
Throwbot 1:1da89c13dfa1 36 while (elapsed_time < duration) {
Throwbot 1:1da89c13dfa1 37 speakerOut=1;
Throwbot 1:1da89c13dfa1 38 wait_us(toneM / 2);
Throwbot 1:1da89c13dfa1 39 speakerOut=0;
Throwbot 1:1da89c13dfa1 40 wait_us(toneM / 2);
Throwbot 1:1da89c13dfa1 41 elapsed_time += (toneM);
Throwbot 1:1da89c13dfa1 42 }
Throwbot 1:1da89c13dfa1 43 } else { // Rest beat; loop times delay
Throwbot 1:1da89c13dfa1 44 for (int j = 0; j < rest_count; j++) { // See NOTE on rest_count
Throwbot 1:1da89c13dfa1 45 wait_us(duration);
Throwbot 1:1da89c13dfa1 46 }
Throwbot 1:1da89c13dfa1 47 }
Throwbot 1:1da89c13dfa1 48 }
Throwbot 1:1da89c13dfa1 49 }
Throwbot 1:1da89c13dfa1 50