micro:bit / microbit-accelerometer

An example of how to us the micro:bit DAL's accelerometer abstraction. This is a one-way sync from GitHub. Please don't try to push changes here, instead push them to the source repo at https://github.com/lancaster-university/microbit-samples

Dependencies:   microbit

main.cpp@3:4519ea0c39b2, 2016-07-13 (annotated)

Committer:
JonnyA
Date:
Wed Jul 13 14:33:18 2016 +0000
Revision:
3:4519ea0c39b2
Parent:
0:d7b7ac4f9a21 
Use the latest microbit library

Who changed what in which revision?

UserRevisionLine numberNew contents of line
LancasterUniversity 0:d7b7ac4f9a21 1 /*
LancasterUniversity 0:d7b7ac4f9a21 2 The MIT License (MIT)
LancasterUniversity 0:d7b7ac4f9a21 3
LancasterUniversity 0:d7b7ac4f9a21 4 Copyright (c) 2016 British Broadcasting Corporation.
LancasterUniversity 0:d7b7ac4f9a21 5 This software is provided by Lancaster University by arrangement with the BBC.
LancasterUniversity 0:d7b7ac4f9a21 6
LancasterUniversity 0:d7b7ac4f9a21 7 Permission is hereby granted, free of charge, to any person obtaining a
LancasterUniversity 0:d7b7ac4f9a21 8 copy of this software and associated documentation files (the "Software"),
LancasterUniversity 0:d7b7ac4f9a21 9 to deal in the Software without restriction, including without limitation
LancasterUniversity 0:d7b7ac4f9a21 10 the rights to use, copy, modify, merge, publish, distribute, sublicense,
LancasterUniversity 0:d7b7ac4f9a21 11 and/or sell copies of the Software, and to permit persons to whom the
LancasterUniversity 0:d7b7ac4f9a21 12 Software is furnished to do so, subject to the following conditions:
LancasterUniversity 0:d7b7ac4f9a21 13
LancasterUniversity 0:d7b7ac4f9a21 14 The above copyright notice and this permission notice shall be included in
LancasterUniversity 0:d7b7ac4f9a21 15 all copies or substantial portions of the Software.
LancasterUniversity 0:d7b7ac4f9a21 16
LancasterUniversity 0:d7b7ac4f9a21 17 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
LancasterUniversity 0:d7b7ac4f9a21 18 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
LancasterUniversity 0:d7b7ac4f9a21 19 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
LancasterUniversity 0:d7b7ac4f9a21 20 THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LancasterUniversity 0:d7b7ac4f9a21 21 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
LancasterUniversity 0:d7b7ac4f9a21 22 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
LancasterUniversity 0:d7b7ac4f9a21 23 DEALINGS IN THE SOFTWARE.
LancasterUniversity 0:d7b7ac4f9a21 24 */
LancasterUniversity 0:d7b7ac4f9a21 25
LancasterUniversity 0:d7b7ac4f9a21 26 #include "MicroBit.h"
LancasterUniversity 0:d7b7ac4f9a21 27
LancasterUniversity 0:d7b7ac4f9a21 28 MicroBit uBit;
LancasterUniversity 0:d7b7ac4f9a21 29
LancasterUniversity 0:d7b7ac4f9a21 30 //
LancasterUniversity 0:d7b7ac4f9a21 31 // Scales the given value that is in the -1024 to 1024 range
LancasterUniversity 0:d7b7ac4f9a21 32 // int a value between 0 and 4.
LancasterUniversity 0:d7b7ac4f9a21 33 //
LancasterUniversity 0:d7b7ac4f9a21 34 int pixel_from_g(int value)
LancasterUniversity 0:d7b7ac4f9a21 35 {
LancasterUniversity 0:d7b7ac4f9a21 36 int x = 0;
LancasterUniversity 0:d7b7ac4f9a21 37
LancasterUniversity 0:d7b7ac4f9a21 38 if (value > -750)
LancasterUniversity 0:d7b7ac4f9a21 39 x++;
LancasterUniversity 0:d7b7ac4f9a21 40 if (value > -250)
LancasterUniversity 0:d7b7ac4f9a21 41 x++;
LancasterUniversity 0:d7b7ac4f9a21 42 if (value > 250)
LancasterUniversity 0:d7b7ac4f9a21 43 x++;
LancasterUniversity 0:d7b7ac4f9a21 44 if (value > 750)
LancasterUniversity 0:d7b7ac4f9a21 45 x++;
LancasterUniversity 0:d7b7ac4f9a21 46
LancasterUniversity 0:d7b7ac4f9a21 47 return x;
LancasterUniversity 0:d7b7ac4f9a21 48 }
LancasterUniversity 0:d7b7ac4f9a21 49
LancasterUniversity 0:d7b7ac4f9a21 50 int main()
LancasterUniversity 0:d7b7ac4f9a21 51 {
LancasterUniversity 0:d7b7ac4f9a21 52 // Initialise the micro:bit runtime.
LancasterUniversity 0:d7b7ac4f9a21 53 uBit.init();
LancasterUniversity 0:d7b7ac4f9a21 54
LancasterUniversity 0:d7b7ac4f9a21 55 //
LancasterUniversity 0:d7b7ac4f9a21 56 // Periodically read the accelerometer x and y values, and plot a
LancasterUniversity 0:d7b7ac4f9a21 57 // scaled version of this ont the display.
LancasterUniversity 0:d7b7ac4f9a21 58 //
LancasterUniversity 0:d7b7ac4f9a21 59 while(1)
LancasterUniversity 0:d7b7ac4f9a21 60 {
LancasterUniversity 0:d7b7ac4f9a21 61 int x = pixel_from_g(uBit.accelerometer.getX());
LancasterUniversity 0:d7b7ac4f9a21 62 int y = pixel_from_g(uBit.accelerometer.getY());
LancasterUniversity 0:d7b7ac4f9a21 63
LancasterUniversity 0:d7b7ac4f9a21 64 uBit.display.image.clear();
LancasterUniversity 0:d7b7ac4f9a21 65 uBit.display.image.setPixelValue(x, y, 255);
LancasterUniversity 0:d7b7ac4f9a21 66
LancasterUniversity 0:d7b7ac4f9a21 67 uBit.sleep(100);
LancasterUniversity 0:d7b7ac4f9a21 68 }
LancasterUniversity 0:d7b7ac4f9a21 69 }
LancasterUniversity 0:d7b7ac4f9a21 70