Emily Wilson / Mbed 2 deprecated ECE4180Lab3

ece 4180 lab 3

Dependencies:   mbed wave_player mbed-rtos 4DGL-uLCD-SE SDFileSystem X_NUCLEO_53L0A1 HC_SR04_Ultrasonic_Library

part2.h@4:1ef667567942, 2020-02-27 (annotated)

Committer:
emilywilson
Date:
Thu Feb 27 12:57:44 2020 +0000
Revision:
4:1ef667567942
Parent:
2:4845e2dae429 
add extra credit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilywilson 2:4845e2dae429 1 #include "mbed.h"
emilywilson 2:4845e2dae429 2 #include "ultrasonic.h"
emilywilson 2:4845e2dae429 3
emilywilson 2:4845e2dae429 4 Serial pc(USBTX, USBRX);
emilywilson 2:4845e2dae429 5
emilywilson 2:4845e2dae429 6 void dist(int distance)
emilywilson 2:4845e2dae429 7 {
emilywilson 2:4845e2dae429 8 //put code here to execute when the distance has changed
emilywilson 2:4845e2dae429 9 pc.printf("Distance %d mm\r\n", distance);
emilywilson 2:4845e2dae429 10 }
emilywilson 2:4845e2dae429 11
emilywilson 2:4845e2dae429 12 ultrasonic mu(p6, p7, .1, 1, &dist); //Set the trigger pin to p6 and the echo pin to p7
emilywilson 2:4845e2dae429 13 //have updates every .1 seconds and a timeout after 1
emilywilson 2:4845e2dae429 14 //second, and call dist when the distance changes
emilywilson 2:4845e2dae429 15
emilywilson 2:4845e2dae429 16 int run_part2()
emilywilson 2:4845e2dae429 17 {
emilywilson 2:4845e2dae429 18 mu.startUpdates();//start measuring the distance
emilywilson 2:4845e2dae429 19 while(1)
emilywilson 2:4845e2dae429 20 {
emilywilson 2:4845e2dae429 21 //Do something else here
emilywilson 2:4845e2dae429 22 mu.checkDistance(); //call checkDistance() as much as possible, as this is where
emilywilson 2:4845e2dae429 23 //the class checks if dist needs to be called.
emilywilson 2:4845e2dae429 24 }
emilywilson 2:4845e2dae429 25 }
emilywilson 2:4845e2dae429 26
emilywilson 2:4845e2dae429 27 //Theremin style demo using HC-SR04 Sonar and a speaker
emilywilson 2:4845e2dae429 28 // moving a hand away/towards sonar changes audio frequency
emilywilson 2:4845e2dae429 29
emilywilson 2:4845e2dae429 30 DigitalOut audio(p26); //output to speaker amp or audio jack
emilywilson 2:4845e2dae429 31 DigitalOut led(LED1);
emilywilson 2:4845e2dae429 32 DigitalOut led2(LED2);
emilywilson 2:4845e2dae429 33
emilywilson 2:4845e2dae429 34 Timeout cycle;
emilywilson 2:4845e2dae429 35
emilywilson 2:4845e2dae429 36 volatile int half_cycle_time = 1;
emilywilson 2:4845e2dae429 37
emilywilson 2:4845e2dae429 38 //two calls to this interrupt routine generates a square wave
emilywilson 2:4845e2dae429 39 void toggle_interrupt()
emilywilson 2:4845e2dae429 40 {
emilywilson 2:4845e2dae429 41 if (half_cycle_time>22000) audio=0; //mute if nothing in range
emilywilson 2:4845e2dae429 42 else audio = !audio; //toggle to make half a square wave
emilywilson 2:4845e2dae429 43 led = !led;
emilywilson 2:4845e2dae429 44 cycle.detach();
emilywilson 2:4845e2dae429 45 //update time for interrupt activation -change frequency of square wave
emilywilson 2:4845e2dae429 46 cycle.attach_us(&toggle_interrupt, half_cycle_time);
emilywilson 2:4845e2dae429 47 }
emilywilson 2:4845e2dae429 48 void newdist(int distance)
emilywilson 2:4845e2dae429 49 {
emilywilson 2:4845e2dae429 50 //update frequency based on new sonar data
emilywilson 2:4845e2dae429 51 led2 = !led2;
emilywilson 2:4845e2dae429 52 half_cycle_time = distance<<3;
emilywilson 2:4845e2dae429 53 }
emilywilson 2:4845e2dae429 54 //HC-SR04 Sonar module
emilywilson 2:4845e2dae429 55 ultrasonic mu2(p6, p7, .07, 1, &newdist);
emilywilson 2:4845e2dae429 56 //Set the trigger pin to p6 and the echo pin to p7
emilywilson 2:4845e2dae429 57 //have updates every .07 seconds and a timeout after 1
emilywilson 2:4845e2dae429 58 //second, and call newdist when the distance changes
emilywilson 2:4845e2dae429 59 int run_part2_EC()
emilywilson 2:4845e2dae429 60 {
emilywilson 2:4845e2dae429 61 audio = 0;
emilywilson 2:4845e2dae429 62 led = 0;
emilywilson 2:4845e2dae429 63 cycle.attach(&toggle_interrupt, half_cycle_time);
emilywilson 2:4845e2dae429 64 mu2.startUpdates();//start measuring the distance with the sonar
emilywilson 2:4845e2dae429 65 while(1) {
emilywilson 2:4845e2dae429 66 //Do something else here
emilywilson 2:4845e2dae429 67 mu2.checkDistance();
emilywilson 2:4845e2dae429 68 //call checkDistance() as much as possible, as this is where
emilywilson 2:4845e2dae429 69 //the class checks if dist needs to be called.
emilywilson 2:4845e2dae429 70 }
emilywilson 2:4845e2dae429 71 }