hardware.cpp

00001 // Copyright 2020 Georgia Tech.  All rights reserved.
00002 // The materials provided by the instructor in this course are for
00003 // the use of the students currently enrolled in the course.
00004 // Copyrighted course materials may not be further disseminated.
00005 // This file must not be made publicly available anywhere.
00006 
00007 // This header has all the (extern) declarations of the globals.
00008 // "extern" means "this is instantiated somewhere, but here's what the name
00009 // means.
00010 #include "globals.h"
00011 
00012 #include "hardware.h"
00013 #include "Speaker.h"
00014 // We need to actually instantiate all of the globals (i.e. declare them once
00015 // without the extern keyword). That's what this file does!
00016 
00017 // Hardware initialization: Instantiate all the things!
00018 uLCD_4DGL uLCD(p9,p10,p11);             // LCD Screen (tx, rx, reset)
00019 //SDFileSystem sd(p5, p6, p7, p8, "sd");  // SD Card(mosi, miso, sck, cs)
00020 Serial pc(USBTX,USBRX);                 // USB Console (tx, rx)
00021 MMA8452 acc(p28, p27, 100000);        // Accelerometer (sda, sdc, rate)
00022 DigitalIn button1(p21);                 // Pushbuttons (pin)
00023 DigitalIn button2(p22);
00024 DigitalIn button3(p23);
00025 AnalogOut DACout(p18);                  // Speaker (pin)
00026 PwmOut speaker(p26);
00027 wave_player waver(&DACout);
00028 
00029 
00030 // Some hardware also needs to have functions called before it will set up
00031 // properly. Do that here.
00032 
00033 int hardware_init()
00034 {
00035     // Crank up the speed
00036     uLCD.baudrate(3000000);
00037     pc.baud(115200);
00038         
00039     //Initialize pushbuttons
00040     button1.mode(PullUp); 
00041     button2.mode(PullUp);
00042     button3.mode(PullUp);
00043     
00044     return ERROR_NONE;
00045 }
00046 
00047 // Implement this function.
00048 // HINT: lookup your accelerometer under mbed site > Hardware> Components
00049 // and look at demo code
00050 GameInputs read_inputs() 
00051 {
00052     GameInputs in;
00053 
00054     // Read the values and store them in in
00055     //tilting board left = -x
00056     //tilting board down towards table = +y
00057 
00058     in.b1 = button3; //top button on breadboard is  connected to p23
00059     in.b2 = button2; //middle button on breadboard is  connected to p22
00060     in.b3 = button1; //bottom button ob breadboard is  connected to p21
00061     
00062     acc.readXGravity(&in.ax);
00063     acc.readYGravity(&in.ay);
00064     acc.readZGravity(&in.az);
00065     
00066     //pc.printf("xAccel: %f   yAccel: %f   zAccel: %f\n",in.ax,in.ay,in.az);
00067     return in;
00068 }
00069