Maxim Integrated / Mbed OS MAXREFDES155#

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Dependencies:   MaximInterface

Display.cpp@11:989eabe2a376, 2017-05-03 (annotated)

Committer:
IanBenzMaxim
Date:
Wed May 03 16:08:59 2017 -0500
Revision:
11:989eabe2a376
Parent:
10:71359af61af8
Child:
13:6a6225690c2e
Changed to always using scanline encoding for bitmaps.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
IanBenzMaxim 0:33d4e66780c0 1 /*******************************************************************************
IanBenzMaxim 0:33d4e66780c0 2 * Copyright (C) 2017 Maxim Integrated Products, Inc., All Rights Reserved.
IanBenzMaxim 0:33d4e66780c0 3 *
IanBenzMaxim 0:33d4e66780c0 4 * Permission is hereby granted, free of charge, to any person obtaining a
IanBenzMaxim 0:33d4e66780c0 5 * copy of this software and associated documentation files (the "Software"),
IanBenzMaxim 0:33d4e66780c0 6 * to deal in the Software without restriction, including without limitation
IanBenzMaxim 0:33d4e66780c0 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
IanBenzMaxim 0:33d4e66780c0 8 * and/or sell copies of the Software, and to permit persons to whom the
IanBenzMaxim 0:33d4e66780c0 9 * Software is furnished to do so, subject to the following conditions:
IanBenzMaxim 0:33d4e66780c0 10 *
IanBenzMaxim 0:33d4e66780c0 11 * The above copyright notice and this permission notice shall be included
IanBenzMaxim 0:33d4e66780c0 12 * in all copies or substantial portions of the Software.
IanBenzMaxim 0:33d4e66780c0 13 *
IanBenzMaxim 0:33d4e66780c0 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
IanBenzMaxim 0:33d4e66780c0 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
IanBenzMaxim 0:33d4e66780c0 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IanBenzMaxim 0:33d4e66780c0 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
IanBenzMaxim 0:33d4e66780c0 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
IanBenzMaxim 0:33d4e66780c0 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
IanBenzMaxim 0:33d4e66780c0 20 * OTHER DEALINGS IN THE SOFTWARE.
IanBenzMaxim 0:33d4e66780c0 21 *
IanBenzMaxim 0:33d4e66780c0 22 * Except as contained in this notice, the name of Maxim Integrated
IanBenzMaxim 0:33d4e66780c0 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
IanBenzMaxim 0:33d4e66780c0 24 * Products, Inc. Branding Policy.
IanBenzMaxim 0:33d4e66780c0 25 *
IanBenzMaxim 0:33d4e66780c0 26 * The mere transfer of this software does not imply any licenses
IanBenzMaxim 0:33d4e66780c0 27 * of trade secrets, proprietary technology, copyrights, patents,
IanBenzMaxim 0:33d4e66780c0 28 * trademarks, maskwork rights, or any other form of intellectual
IanBenzMaxim 0:33d4e66780c0 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
IanBenzMaxim 0:33d4e66780c0 30 * ownership rights.
IanBenzMaxim 0:33d4e66780c0 31 *******************************************************************************/
IanBenzMaxim 0:33d4e66780c0 32
IanBenzMaxim 0:33d4e66780c0 33 #include "Display.hpp"
IanBenzMaxim 0:33d4e66780c0 34
IanBenzMaxim 10:71359af61af8 35 /// @{
IanBenzMaxim 10:71359af61af8 36 /// Width and height of the display in pixels.
IanBenzMaxim 10:71359af61af8 37 static const int width = 128;
IanBenzMaxim 10:71359af61af8 38 static const int height = 64;
IanBenzMaxim 10:71359af61af8 39 /// @}
IanBenzMaxim 10:71359af61af8 40
IanBenzMaxim 0:33d4e66780c0 41 Display::Display(PinName mosi, PinName miso, PinName sclk, PinName ssel, PinName a0) :
IanBenzMaxim 10:71359af61af8 42 m_canvas(width, height), spi(mosi, miso, sclk), cs(ssel, 1), a0(a0, 0)
IanBenzMaxim 0:33d4e66780c0 43 {
IanBenzMaxim 0:33d4e66780c0 44 spi.format(8, 3); // CPOL = 1, CPHA = 1
IanBenzMaxim 0:33d4e66780c0 45 }
IanBenzMaxim 0:33d4e66780c0 46
IanBenzMaxim 0:33d4e66780c0 47 void Display::initialize()
IanBenzMaxim 0:33d4e66780c0 48 {
IanBenzMaxim 0:33d4e66780c0 49 sendCommand(0xA0);
IanBenzMaxim 0:33d4e66780c0 50 sendCommand(0xAE);
IanBenzMaxim 0:33d4e66780c0 51 sendCommand(0xC0);
IanBenzMaxim 0:33d4e66780c0 52 sendCommand(0xA2);
IanBenzMaxim 0:33d4e66780c0 53 sendCommand(0x2F);
IanBenzMaxim 0:33d4e66780c0 54 sendCommand(0x26);
IanBenzMaxim 0:33d4e66780c0 55 sendCommand(0x81);
IanBenzMaxim 0:33d4e66780c0 56 sendCommand(0x11);
IanBenzMaxim 0:33d4e66780c0 57 sendCommand(0xAF);
IanBenzMaxim 0:33d4e66780c0 58 }
IanBenzMaxim 0:33d4e66780c0 59
IanBenzMaxim 10:71359af61af8 60 void Display::update()
IanBenzMaxim 11:989eabe2a376 61 {
IanBenzMaxim 11:989eabe2a376 62 const int rowsPerPage = 8;
IanBenzMaxim 11:989eabe2a376 63 const int pages = height / rowsPerPage;
IanBenzMaxim 0:33d4e66780c0 64 sendCommand(0xAE);
IanBenzMaxim 0:33d4e66780c0 65 sendCommand(0x40);
IanBenzMaxim 11:989eabe2a376 66 for (int page = 0; page < pages; page++)
IanBenzMaxim 0:33d4e66780c0 67 {
IanBenzMaxim 11:989eabe2a376 68 sendCommand(0xB0 + static_cast<uint8_t>(page));
IanBenzMaxim 11:989eabe2a376 69 sendCommand(0x10);
IanBenzMaxim 11:989eabe2a376 70 sendCommand(0x00);
IanBenzMaxim 11:989eabe2a376 71 for (int column = 0; column < width; column++)
IanBenzMaxim 0:33d4e66780c0 72 {
IanBenzMaxim 11:989eabe2a376 73 uint8_t segment = 0;
IanBenzMaxim 11:989eabe2a376 74 for (int pixel = 0; pixel < rowsPerPage; pixel++)
IanBenzMaxim 11:989eabe2a376 75 {
IanBenzMaxim 11:989eabe2a376 76 segment <<= 1;
IanBenzMaxim 11:989eabe2a376 77 if (m_canvas.pixelEnabled(column, ((pages - 1 - page) * rowsPerPage) + pixel))
IanBenzMaxim 11:989eabe2a376 78 {
IanBenzMaxim 11:989eabe2a376 79 segment |= 1;
IanBenzMaxim 11:989eabe2a376 80 }
IanBenzMaxim 11:989eabe2a376 81 }
IanBenzMaxim 11:989eabe2a376 82 sendData(segment);
IanBenzMaxim 0:33d4e66780c0 83 }
IanBenzMaxim 0:33d4e66780c0 84 }
IanBenzMaxim 0:33d4e66780c0 85 sendCommand(0xAF);
IanBenzMaxim 0:33d4e66780c0 86 }
IanBenzMaxim 0:33d4e66780c0 87
IanBenzMaxim 0:33d4e66780c0 88 void Display::sendCommand(uint8_t command)
IanBenzMaxim 0:33d4e66780c0 89 {
IanBenzMaxim 0:33d4e66780c0 90 cs = 0;
IanBenzMaxim 0:33d4e66780c0 91 a0 = 0;
IanBenzMaxim 0:33d4e66780c0 92 spi.write(command);
IanBenzMaxim 0:33d4e66780c0 93 cs = 1;
IanBenzMaxim 0:33d4e66780c0 94 }
IanBenzMaxim 0:33d4e66780c0 95
IanBenzMaxim 0:33d4e66780c0 96 void Display::sendData(uint8_t data)
IanBenzMaxim 0:33d4e66780c0 97 {
IanBenzMaxim 0:33d4e66780c0 98 cs = 0;
IanBenzMaxim 0:33d4e66780c0 99 a0 = 1;
IanBenzMaxim 0:33d4e66780c0 100 spi.write(data);
IanBenzMaxim 0:33d4e66780c0 101 cs = 1;
IanBenzMaxim 0:33d4e66780c0 102 }