Maxim Integrated / Mbed OS MAXREFDES155#

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Dependencies:   MaximInterface

src/Display.cpp@16:a004191a79ab, 2019-10-03 (annotated)

Committer:
IanBenzMaxim
Date:
Thu Oct 03 11:40:13 2019 -0500
Revision:
16:a004191a79ab
Parent:
Display.cpp@13:6a6225690c2e 
Updated MaximInterface to version 2.0. Updated mbed-os to version 5.5.7. Cleaned up code styling.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
IanBenzMaxim 0:33d4e66780c0 1 /*******************************************************************************
IanBenzMaxim 16:a004191a79ab 2 * Copyright (C) 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 13:6a6225690c2e 41 Display::Display(PinName mosi, PinName miso, PinName sclk, PinName ssel,
IanBenzMaxim 13:6a6225690c2e 42 PinName a0)
IanBenzMaxim 16:a004191a79ab 43 : canvas_(width, height), spi(mosi, miso, sclk), cs(ssel, 1), a0(a0, 0) {
IanBenzMaxim 13:6a6225690c2e 44 spi.format(8, 3); // CPOL = 1, CPHA = 1
IanBenzMaxim 0:33d4e66780c0 45 }
IanBenzMaxim 0:33d4e66780c0 46
IanBenzMaxim 13:6a6225690c2e 47 void Display::initialize() {
IanBenzMaxim 13:6a6225690c2e 48 sendCommand(0xA0);
IanBenzMaxim 13:6a6225690c2e 49 sendCommand(0xAE);
IanBenzMaxim 13:6a6225690c2e 50 sendCommand(0xC0);
IanBenzMaxim 13:6a6225690c2e 51 sendCommand(0xA2);
IanBenzMaxim 13:6a6225690c2e 52 sendCommand(0x2F);
IanBenzMaxim 13:6a6225690c2e 53 sendCommand(0x26);
IanBenzMaxim 13:6a6225690c2e 54 sendCommand(0x81);
IanBenzMaxim 13:6a6225690c2e 55 sendCommand(0x11);
IanBenzMaxim 13:6a6225690c2e 56 sendCommand(0xAF);
IanBenzMaxim 0:33d4e66780c0 57 }
IanBenzMaxim 0:33d4e66780c0 58
IanBenzMaxim 13:6a6225690c2e 59 void Display::update() {
IanBenzMaxim 13:6a6225690c2e 60 const int rowsPerPage = 8;
IanBenzMaxim 13:6a6225690c2e 61 const int pages = height / rowsPerPage;
IanBenzMaxim 13:6a6225690c2e 62 sendCommand(0xAE);
IanBenzMaxim 13:6a6225690c2e 63 sendCommand(0x40);
IanBenzMaxim 16:a004191a79ab 64 for (int page = 0; page < pages; ++page) {
IanBenzMaxim 16:a004191a79ab 65 sendCommand(0xB0 + page);
IanBenzMaxim 13:6a6225690c2e 66 sendCommand(0x10);
IanBenzMaxim 13:6a6225690c2e 67 sendCommand(0x00);
IanBenzMaxim 16:a004191a79ab 68 for (int column = 0; column < width; ++column) {
IanBenzMaxim 13:6a6225690c2e 69 uint8_t segment = 0;
IanBenzMaxim 16:a004191a79ab 70 for (int pixel = 0; pixel < rowsPerPage; ++pixel) {
IanBenzMaxim 13:6a6225690c2e 71 segment <<= 1;
IanBenzMaxim 16:a004191a79ab 72 if (canvas_.pixelEnabled(column,
IanBenzMaxim 16:a004191a79ab 73 ((pages - 1 - page) * rowsPerPage) + pixel)) {
IanBenzMaxim 13:6a6225690c2e 74 segment |= 1;
IanBenzMaxim 0:33d4e66780c0 75 }
IanBenzMaxim 13:6a6225690c2e 76 }
IanBenzMaxim 13:6a6225690c2e 77 sendData(segment);
IanBenzMaxim 0:33d4e66780c0 78 }
IanBenzMaxim 13:6a6225690c2e 79 }
IanBenzMaxim 13:6a6225690c2e 80 sendCommand(0xAF);
IanBenzMaxim 0:33d4e66780c0 81 }
IanBenzMaxim 0:33d4e66780c0 82
IanBenzMaxim 13:6a6225690c2e 83 void Display::sendCommand(uint8_t command) {
IanBenzMaxim 13:6a6225690c2e 84 cs = 0;
IanBenzMaxim 13:6a6225690c2e 85 a0 = 0;
IanBenzMaxim 13:6a6225690c2e 86 spi.write(command);
IanBenzMaxim 13:6a6225690c2e 87 cs = 1;
IanBenzMaxim 0:33d4e66780c0 88 }
IanBenzMaxim 0:33d4e66780c0 89
IanBenzMaxim 13:6a6225690c2e 90 void Display::sendData(uint8_t data) {
IanBenzMaxim 13:6a6225690c2e 91 cs = 0;
IanBenzMaxim 13:6a6225690c2e 92 a0 = 1;
IanBenzMaxim 13:6a6225690c2e 93 spi.write(data);
IanBenzMaxim 13:6a6225690c2e 94 cs = 1;
IanBenzMaxim 0:33d4e66780c0 95 }