mozhdeh shahbazi / Mbed 2 deprecated STEMEXplore_Guide

A Simple Programming Workshop - University of Calgary

Dependencies:   mbed C12832 MMA7660

main.cpp@3:7278142d6a1a, 2019-05-15 (annotated)

Committer:
mozhdehshahbazi
Date:
Wed May 15 00:15:50 2019 +0000
Revision:
3:7278142d6a1a
Parent:
2:c2ebc7fa80eb 
Created for STEM Explore - Geomatics 2019

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mozhdehshahbazi 3:7278142d6a1a 1 #include "mbed.h" // General board
mpetovello 0:a19771db916c 2 #include "MMA7660.h" // accelerometer sensor
mpetovello 0:a19771db916c 3 #include "C12832.h" // LCD display
mpetovello 0:a19771db916c 4
mozhdehshahbazi 3:7278142d6a1a 5 //Some ideas:
mozhdehshahbazi 3:7278142d6a1a 6 // create a for loop to turn the LED on and off with a pattern. For example, every 1 second.
mozhdehshahbazi 3:7278142d6a1a 7 // create a condition to turn the LED on when the joystick fire pin is pressed, and turn it off when any other pin is pressed
mpetovello 0:a19771db916c 8
mpetovello 0:a19771db916c 9 int main()
mpetovello 0:a19771db916c 10 {
mozhdehshahbazi 3:7278142d6a1a 11 // Variables
mozhdehshahbazi 3:7278142d6a1a 12 int x, y, joy, press;
mozhdehshahbazi 3:7278142d6a1a 13 float accX, accY, accZ, acc3;
mozhdehshahbazi 3:7278142d6a1a 14
mpetovello 2:c2ebc7fa80eb 15 // create an accelerometer object
mpetovello 2:c2ebc7fa80eb 16 MMA7660 accelerometer(p28, p27);
mpetovello 2:c2ebc7fa80eb 17
mozhdehshahbazi 3:7278142d6a1a 18 // LCD display object
mpetovello 2:c2ebc7fa80eb 19 C12832 lcd(p5, p7, p6, p8, p11);
mpetovello 2:c2ebc7fa80eb 20
mozhdehshahbazi 3:7278142d6a1a 21 //An external LED powered by pin 30
mozhdehshahbazi 3:7278142d6a1a 22 DigitalOut redled(p30);
mozhdehshahbazi 3:7278142d6a1a 23 redled = 1; //1 means the LED is turned on
mozhdehshahbazi 3:7278142d6a1a 24 wait(2.0); //Make the program pause for 2 seconds
mozhdehshahbazi 3:7278142d6a1a 25 redled=0; // 0 means the LED is turned off
mpetovello 2:c2ebc7fa80eb 26
mozhdehshahbazi 3:7278142d6a1a 27 // joystick object
mozhdehshahbazi 3:7278142d6a1a 28 BusIn joystick(p15,p12,p13,p16);
mozhdehshahbazi 3:7278142d6a1a 29 DigitalIn fire(p14);
mozhdehshahbazi 3:7278142d6a1a 30
mozhdehshahbazi 3:7278142d6a1a 31 // Left LED
mozhdehshahbazi 3:7278142d6a1a 32 DigitalOut leftled(LED1);
mozhdehshahbazi 3:7278142d6a1a 33
mozhdehshahbazi 3:7278142d6a1a 34 //A way to manipulate all the LEDs together
mozhdehshahbazi 3:7278142d6a1a 35 BusOut LEDs(LED1, LED2, LED3, LED4);
mpetovello 2:c2ebc7fa80eb 36
mpetovello 0:a19771db916c 37 // try to establish a connection with the accelerometer
mpetovello 0:a19771db916c 38 if( !accelerometer.testConnection() )
mpetovello 0:a19771db916c 39 {
mpetovello 0:a19771db916c 40 // turn on all LEDs (indicating an error state)
mpetovello 0:a19771db916c 41 LEDs = 0xf;
mpetovello 0:a19771db916c 42 return 0;
mpetovello 0:a19771db916c 43 }
mpetovello 0:a19771db916c 44
mpetovello 0:a19771db916c 45 // clear the LCD
mpetovello 0:a19771db916c 46 lcd.cls();
mpetovello 0:a19771db916c 47
mpetovello 0:a19771db916c 48
mpetovello 0:a19771db916c 49 // TODO: Move to the centre of the LCD and set the corresponding pixel to black
mpetovello 0:a19771db916c 50 // We will call the current location the "active pixel"
mozhdehshahbazi 3:7278142d6a1a 51 x = lcd.width() / 2;
mozhdehshahbazi 3:7278142d6a1a 52 y = lcd.height() / 2;
mozhdehshahbazi 3:7278142d6a1a 53 lcd.pixel(x, y, 1);
mozhdehshahbazi 3:7278142d6a1a 54 lcd.copy_to_lcd();
mpetovello 0:a19771db916c 55
mpetovello 0:a19771db916c 56 // create an infinite loop (i.e., the program runs as long as the processor is on)
mpetovello 0:a19771db916c 57 while(1)
mpetovello 0:a19771db916c 58 {
mpetovello 0:a19771db916c 59 // TODO: Get the state/value of the joystick
mozhdehshahbazi 3:7278142d6a1a 60 joy = joystick.read();
mpetovello 0:a19771db916c 61
mpetovello 0:a19771db916c 62 // TODO: Determine the coordinates of the next active pixel based on joystick data
mozhdehshahbazi 3:7278142d6a1a 63 if (joy == 1 && y > 0) // UP
mozhdehshahbazi 3:7278142d6a1a 64 {
mozhdehshahbazi 3:7278142d6a1a 65 --y;
mozhdehshahbazi 3:7278142d6a1a 66 }
mozhdehshahbazi 3:7278142d6a1a 67 else if (joy == 2 && y < lcd.height() - 1) // DOWN
mozhdehshahbazi 3:7278142d6a1a 68 {
mozhdehshahbazi 3:7278142d6a1a 69 ++y;
mozhdehshahbazi 3:7278142d6a1a 70 } else if (joy == 4 && x > 0) // LEFT
mozhdehshahbazi 3:7278142d6a1a 71 {
mozhdehshahbazi 3:7278142d6a1a 72 --x;
mozhdehshahbazi 3:7278142d6a1a 73 }
mozhdehshahbazi 3:7278142d6a1a 74 else if (joy == 8 && x < lcd.width() - 1) // RIGHT
mozhdehshahbazi 3:7278142d6a1a 75 {
mozhdehshahbazi 3:7278142d6a1a 76 ++x;
mozhdehshahbazi 3:7278142d6a1a 77 }
mozhdehshahbazi 3:7278142d6a1a 78 else if (joy == 5 && x > 0 && y > 0) // LEFT-UP
mozhdehshahbazi 3:7278142d6a1a 79 {
mozhdehshahbazi 3:7278142d6a1a 80 --x;
mozhdehshahbazi 3:7278142d6a1a 81 --y;
mozhdehshahbazi 3:7278142d6a1a 82 }
mozhdehshahbazi 3:7278142d6a1a 83 else if (joy == 6 && x > 0 && y < lcd.height() - 1) // LEFT-DOWN
mozhdehshahbazi 3:7278142d6a1a 84 {
mozhdehshahbazi 3:7278142d6a1a 85 --x;
mozhdehshahbazi 3:7278142d6a1a 86 ++y;
mozhdehshahbazi 3:7278142d6a1a 87 }
mozhdehshahbazi 3:7278142d6a1a 88 else if (joy == 9 && x < lcd.width() - 1 && y > 0) // RIGHT-UP
mozhdehshahbazi 3:7278142d6a1a 89 {
mozhdehshahbazi 3:7278142d6a1a 90 ++x;
mozhdehshahbazi 3:7278142d6a1a 91 --y;
mozhdehshahbazi 3:7278142d6a1a 92 }
mozhdehshahbazi 3:7278142d6a1a 93 else if (joy == 10 && x < lcd.width() - 1 && y < lcd.height() - 1)
mozhdehshahbazi 3:7278142d6a1a 94 { // RIGHT-DOWN
mozhdehshahbazi 3:7278142d6a1a 95 ++x;
mozhdehshahbazi 3:7278142d6a1a 96 ++y;
mozhdehshahbazi 3:7278142d6a1a 97 }
mozhdehshahbazi 3:7278142d6a1a 98
mozhdehshahbazi 3:7278142d6a1a 99 // TODO: Set the next pixel to black
mozhdehshahbazi 3:7278142d6a1a 100 lcd.pixel(x, y, 1);
mozhdehshahbazi 3:7278142d6a1a 101 lcd.copy_to_lcd();
mozhdehshahbazi 3:7278142d6a1a 102
mpetovello 0:a19771db916c 103
mpetovello 0:a19771db916c 104
mozhdehshahbazi 3:7278142d6a1a 105 // TODO: Get the accelerometer measurements
mpetovello 0:a19771db916c 106
mozhdehshahbazi 3:7278142d6a1a 107 accX = accelerometer.x();
mozhdehshahbazi 3:7278142d6a1a 108 accY = accelerometer.y();
mozhdehshahbazi 3:7278142d6a1a 109 accZ = accelerometer.z();
mozhdehshahbazi 3:7278142d6a1a 110 acc3 = sqrt(accX * accX + accY * accY + accZ * accZ); //this the amount of acceleration (how fast you displace or shake the board!)
mpetovello 0:a19771db916c 111
mpetovello 0:a19771db916c 112 // TODO: Check if the screen should be cleared based on the accelerometer
mpetovello 0:a19771db916c 113 // measurements, and if so, clear the screen but don't move the active
mpetovello 0:a19771db916c 114 // pixel.
mpetovello 0:a19771db916c 115 //
mpetovello 0:a19771db916c 116 // NOTE: Although you may have an idea of how to do this, it may take some
mpetovello 0:a19771db916c 117 // "tuning" to get it to "feel right".
mozhdehshahbazi 3:7278142d6a1a 118
mozhdehshahbazi 3:7278142d6a1a 119 if (acc3 > 1.5 || fire ) {
mozhdehshahbazi 3:7278142d6a1a 120
mozhdehshahbazi 3:7278142d6a1a 121 lcd.cls();
mozhdehshahbazi 3:7278142d6a1a 122 x = lcd.width() / 2;
mozhdehshahbazi 3:7278142d6a1a 123 y = lcd.height() / 2;
mozhdehshahbazi 3:7278142d6a1a 124 lcd.pixel(x, y, 1);
mozhdehshahbazi 3:7278142d6a1a 125 lcd.copy_to_lcd();
mozhdehshahbazi 3:7278142d6a1a 126
mozhdehshahbazi 3:7278142d6a1a 127 leftled=1;
mozhdehshahbazi 3:7278142d6a1a 128 wait(0.2);
mozhdehshahbazi 3:7278142d6a1a 129 leftled=0;
mozhdehshahbazi 3:7278142d6a1a 130
mozhdehshahbazi 3:7278142d6a1a 131 }
mpetovello 0:a19771db916c 132
mpetovello 0:a19771db916c 133
mpetovello 0:a19771db916c 134 // wait a short period
mpetovello 0:a19771db916c 135 wait(0.1);
mpetovello 0:a19771db916c 136 }
mpetovello 0:a19771db916c 137
mpetovello 0:a19771db916c 138 // end of program
mpetovello 0:a19771db916c 139 return 0;
mpetovello 0:a19771db916c 140 }