Greyscale.cpp

00001 /*
00002 The MIT License (MIT)
00003 
00004 Copyright (c) 2016 British Broadcasting Corporation.
00005 This software is provided by Lancaster University by arrangement with the BBC.
00006 
00007 Permission is hereby granted, free of charge, to any person obtaining a
00008 copy of this software and associated documentation files (the "Software"),
00009 to deal in the Software without restriction, including without limitation
00010 the rights to use, copy, modify, merge, publish, distribute, sublicense,
00011 and/or sell copies of the Software, and to permit persons to whom the
00012 Software is furnished to do so, subject to the following conditions:
00013 
00014 The above copyright notice and this permission notice shall be included in
00015 all copies or substantial portions of the Software.
00016 
00017 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00018 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00019 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
00020 THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00021 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
00022 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
00023 DEALINGS IN THE SOFTWARE.
00024 */
00025 
00026 #include "MicroBit.h"
00027 #include "MicroBitSamples.h"
00028 
00029 #ifdef MICROBIT_SAMPLE_GREYSCALE
00030 
00031 MicroBit uBit;
00032 
00033 int main()
00034 {
00035     // Initialise the micro:bit runtime.
00036     uBit.init();
00037 
00038     // Enable per pixel rendering, with 256 level of brightness per pixel.
00039     uBit.display.setDisplayMode(DISPLAY_MODE_GREYSCALE);
00040 
00041     // Draw a rainbow brightness effect across the display
00042     int value = 1;
00043 
00044     for(int j = 0; j < 5; j++)
00045     {
00046         for(int i = 0; i < 5; i++)
00047         {
00048             uBit.display.image.setPixelValue(i,j,value);
00049             value += 10;
00050         }
00051     }
00052    
00053     // Nothing else to do, so enter a power efficient sleep.    
00054     while(1)
00055         uBit.sleep(10000);
00056 }
00057 
00058 #endif