Jon Buckman / NeatGUIs

Arduino style GUI

Drivers/SSD1353_SPI.cpp@2:3d959bc7d64d, 2016-12-01 (annotated)

Committer:
jonebuckman
Date:
Thu Dec 01 13:54:38 2016 +0000
Revision:
2:3d959bc7d64d
Parent:
0:90962b684403
Child:
3:b5409826d05f
Start.

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jonebuckman 0:90962b684403 1 /* NeatGUI Library
jonebuckman 0:90962b684403 2 * Copyright (c) 2013 Neil Thiessen
jonebuckman 0:90962b684403 3 *
jonebuckman 0:90962b684403 4 * Licensed under the Apache License, Version 2.0 (the "License");
jonebuckman 0:90962b684403 5 * you may not use this file except in compliance with the License.
jonebuckman 0:90962b684403 6 * You may obtain a copy of the License at
jonebuckman 0:90962b684403 7 *
jonebuckman 0:90962b684403 8 * http://www.apache.org/licenses/LICENSE-2.0
jonebuckman 0:90962b684403 9 *
jonebuckman 0:90962b684403 10 * Unless required by applicable law or agreed to in writing, software
jonebuckman 0:90962b684403 11 * distributed under the License is distributed on an "AS IS" BASIS,
jonebuckman 0:90962b684403 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
jonebuckman 0:90962b684403 13 * See the License for the specific language governing permissions and
jonebuckman 0:90962b684403 14 * limitations under the License.
jonebuckman 0:90962b684403 15 */
jonebuckman 0:90962b684403 16
jonebuckman 0:90962b684403 17 #include "SSD1353_SPI.h"
jonebuckman 0:90962b684403 18
jonebuckman 0:90962b684403 19 SSD1353_SPI::SSD1353_SPI(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName dc) : Display(162, 132), m_SPI(mosi, miso, sclk), m_CS(cs), m_DC(dc)
jonebuckman 0:90962b684403 20 {
jonebuckman 0:90962b684403 21 //Deselect the display
jonebuckman 0:90962b684403 22 m_CS = 1;
jonebuckman 0:90962b684403 23
jonebuckman 0:90962b684403 24 //Set the SPI format to 8 bit data, high steady state clock, second edge capture
jonebuckman 0:90962b684403 25 m_SPI.format(8, 3);
jonebuckman 0:90962b684403 26
jonebuckman 0:90962b684403 27 //Set the SPI frequency to 20MHz
jonebuckman 0:90962b684403 28 m_SPI.frequency(10000000);
jonebuckman 0:90962b684403 29 }
jonebuckman 0:90962b684403 30
jonebuckman 0:90962b684403 31 bool SSD1353_SPI::open()
jonebuckman 0:90962b684403 32 {
jonebuckman 0:90962b684403 33 //Init sequence for 160x128 OLED module
jonebuckman 0:90962b684403 34 writeCommand(CMD_SOFTRESET);
jonebuckman 0:90962b684403 35 writeCommand(CMD_COMMANDLOCK);
jonebuckman 0:90962b684403 36 writeData(0x00);
jonebuckman 0:90962b684403 37 writeCommand(CMD_DISPLAYOFF);
jonebuckman 0:90962b684403 38 writeCommand(CMD_CLOCKDIV);
jonebuckman 0:90962b684403 39 writeCommand(0xF1);
jonebuckman 0:90962b684403 40 writeCommand(CMD_MUXRATIO);
jonebuckman 0:90962b684403 41 writeData(0x83);
jonebuckman 0:90962b684403 42 writeCommand(CMD_SETREMAP);
jonebuckman 0:90962b684403 43 writeData(0xB4);
jonebuckman 0:90962b684403 44 writeCommand(CMD_SETCOLUMN);
jonebuckman 0:90962b684403 45 writeData(0x00);
jonebuckman 0:90962b684403 46 writeData(0x9F);
jonebuckman 0:90962b684403 47 writeCommand(CMD_SETROW);
jonebuckman 0:90962b684403 48 writeData(0x00);
jonebuckman 0:90962b684403 49 writeData(0x7F);
jonebuckman 0:90962b684403 50 writeCommand(CMD_STARTLINE);
jonebuckman 0:90962b684403 51 writeData(0x0);
jonebuckman 0:90962b684403 52 writeCommand(CMD_DISPLAYOFFSET);
jonebuckman 0:90962b684403 53 writeData(0x0);
jonebuckman 0:90962b684403 54 writeCommand(CMD_VCOMH);
jonebuckman 0:90962b684403 55 writeCommand(0x05);
jonebuckman 0:90962b684403 56 writeCommand(CMD_NORMALDISPLAY);
jonebuckman 0:90962b684403 57 writeCommand(CMD_CONTRASTA);
jonebuckman 0:90962b684403 58 writeData(0xC8); // C8
jonebuckman 0:90962b684403 59 writeCommand(CMD_CONTRASTB);
jonebuckman 0:90962b684403 60 writeData(0x80); // 80
jonebuckman 0:90962b684403 61 writeCommand(CMD_CONTRASTC);
jonebuckman 0:90962b684403 62 writeData(0xC8); // C8
jonebuckman 0:90962b684403 63 writeCommand(CMD_MASTERCURRENT);
jonebuckman 2:3d959bc7d64d 64 writeData(0x0B);
jonebuckman 0:90962b684403 65 writeCommand(CMD_PRECHARGESPEED2);
jonebuckman 0:90962b684403 66 writeData(0x02);
jonebuckman 0:90962b684403 67 writeCommand(CMD_PHASE12PERIOD);
jonebuckman 0:90962b684403 68 writeData(0x21);
jonebuckman 0:90962b684403 69
jonebuckman 0:90962b684403 70 //Return success
jonebuckman 0:90962b684403 71 return true;
jonebuckman 0:90962b684403 72 }
jonebuckman 0:90962b684403 73
jonebuckman 0:90962b684403 74 void SSD1353_SPI::flush()
jonebuckman 0:90962b684403 75 {
jonebuckman 0:90962b684403 76 if (m_CacheIndex > 0) {
jonebuckman 0:90962b684403 77 //Set DC to data and select the display
jonebuckman 0:90962b684403 78 m_DC = 1;
jonebuckman 0:90962b684403 79 m_CS = 0;
jonebuckman 0:90962b684403 80
jonebuckman 0:90962b684403 81 //Write the entire cache at once
jonebuckman 0:90962b684403 82 for (int i = 0; i < m_CacheIndex; i++)
jonebuckman 0:90962b684403 83 m_SPI.write(m_Cache[i]);
jonebuckman 0:90962b684403 84
jonebuckman 0:90962b684403 85 //Deselect the display
jonebuckman 0:90962b684403 86 m_CS = 1;
jonebuckman 0:90962b684403 87
jonebuckman 0:90962b684403 88 //Reset the cache index
jonebuckman 0:90962b684403 89 m_CacheIndex = 0;
jonebuckman 0:90962b684403 90 }
jonebuckman 0:90962b684403 91 }
jonebuckman 0:90962b684403 92
jonebuckman 0:90962b684403 93 Display::State SSD1353_SPI::state()
jonebuckman 0:90962b684403 94 {
jonebuckman 0:90962b684403 95 //Return the base class's state
jonebuckman 0:90962b684403 96 return Display::state();
jonebuckman 0:90962b684403 97 }
jonebuckman 0:90962b684403 98
jonebuckman 0:90962b684403 99 void SSD1353_SPI::state(State s)
jonebuckman 0:90962b684403 100 {
jonebuckman 0:90962b684403 101 //Check what the requested state is
jonebuckman 0:90962b684403 102 if (s == Display::DISPLAY_ON) {
jonebuckman 0:90962b684403 103 //Turn the display on
jonebuckman 0:90962b684403 104 writeCommand(CMD_DISPLAYON);
jonebuckman 0:90962b684403 105 } else if (s == Display::DISPLAY_OFF) {
jonebuckman 0:90962b684403 106 //Turn the display off
jonebuckman 0:90962b684403 107 writeCommand(CMD_DISPLAYOFF);
jonebuckman 0:90962b684403 108 }
jonebuckman 0:90962b684403 109
jonebuckman 0:90962b684403 110 //Update the base class
jonebuckman 0:90962b684403 111 Display::state(s);
jonebuckman 0:90962b684403 112 }
jonebuckman 0:90962b684403 113
jonebuckman 0:90962b684403 114 void SSD1353_SPI::masterCurrent(int current)
jonebuckman 0:90962b684403 115 {
jonebuckman 0:90962b684403 116 if(current >= 0 && current <= 15)
jonebuckman 0:90962b684403 117 {
jonebuckman 0:90962b684403 118 writeCommand(CMD_MASTERCURRENT);
jonebuckman 0:90962b684403 119 writeData(current);
jonebuckman 0:90962b684403 120 }
jonebuckman 0:90962b684403 121 }
jonebuckman 0:90962b684403 122
jonebuckman 0:90962b684403 123 void SSD1353_SPI::drawPixel(int x, int y, unsigned int c)
jonebuckman 0:90962b684403 124 {
jonebuckman 0:90962b684403 125 //Range check the pixel
jonebuckman 0:90962b684403 126 if ((x < 0) || (x >= width()) || (y < 0) || (y >= height()))
jonebuckman 0:90962b684403 127 return;
jonebuckman 0:90962b684403 128
jonebuckman 0:90962b684403 129 //Only goto if the cursor is out of position
jonebuckman 0:90962b684403 130 if (x != m_CursX || y != m_CursY) {
jonebuckman 0:90962b684403 131 //First flush the cache
jonebuckman 0:90962b684403 132 flush();
jonebuckman 0:90962b684403 133
jonebuckman 0:90962b684403 134 //Set column start and end address (also moves pointer)
jonebuckman 0:90962b684403 135 writeCommand(CMD_SETCOLUMN);
jonebuckman 0:90962b684403 136 writeData(x);
jonebuckman 0:90962b684403 137 writeData(width() - 1);
jonebuckman 0:90962b684403 138
jonebuckman 0:90962b684403 139 //Set row start and end address (also moves pointer)
jonebuckman 0:90962b684403 140 writeCommand(CMD_SETROW);
jonebuckman 0:90962b684403 141 writeData(y);
jonebuckman 0:90962b684403 142 writeData(height() - 1);
jonebuckman 0:90962b684403 143
jonebuckman 0:90962b684403 144 writeCommand(CMD_WRITERAM);
jonebuckman 0:90962b684403 145
jonebuckman 0:90962b684403 146 //Update the cursor variables
jonebuckman 0:90962b684403 147 m_StartX = x;
jonebuckman 0:90962b684403 148 m_StartY = y;
jonebuckman 0:90962b684403 149 m_CursX = x;
jonebuckman 0:90962b684403 150 m_CursY = y;
jonebuckman 0:90962b684403 151 }
jonebuckman 0:90962b684403 152
jonebuckman 0:90962b684403 153 //Check if the cache is full
jonebuckman 0:90962b684403 154 if (m_CacheIndex > 1024 - 4) {
jonebuckman 0:90962b684403 155 //Flush the cache
jonebuckman 0:90962b684403 156 flush();
jonebuckman 0:90962b684403 157 }
jonebuckman 0:90962b684403 158
jonebuckman 0:90962b684403 159 //Add this pixel to the cache
jonebuckman 0:90962b684403 160 m_Cache[m_CacheIndex++] = c >> 18;
jonebuckman 0:90962b684403 161 m_Cache[m_CacheIndex++] = c >> 10;
jonebuckman 0:90962b684403 162 m_Cache[m_CacheIndex++] = c >> 2;
jonebuckman 0:90962b684403 163
jonebuckman 0:90962b684403 164 //Increment the cursor with wrapping
jonebuckman 0:90962b684403 165 if (++m_CursX > width() - 1) {
jonebuckman 0:90962b684403 166 m_CursX = m_StartX;
jonebuckman 0:90962b684403 167
jonebuckman 0:90962b684403 168 if (++m_CursY > height() - 1) {
jonebuckman 0:90962b684403 169 m_CursY = m_StartY;
jonebuckman 0:90962b684403 170 }
jonebuckman 0:90962b684403 171 }
jonebuckman 0:90962b684403 172 }
jonebuckman 0:90962b684403 173
jonebuckman 0:90962b684403 174 void SSD1353_SPI::writeCommand(char command)
jonebuckman 0:90962b684403 175 {
jonebuckman 0:90962b684403 176 //Set DC to command and select the display
jonebuckman 0:90962b684403 177 m_DC = 0;
jonebuckman 0:90962b684403 178 m_CS = 0;
jonebuckman 0:90962b684403 179
jonebuckman 0:90962b684403 180 //Write the command byte
jonebuckman 0:90962b684403 181 m_SPI.write(command);
jonebuckman 0:90962b684403 182
jonebuckman 0:90962b684403 183 //Deselect the display
jonebuckman 0:90962b684403 184 m_CS = 1;
jonebuckman 0:90962b684403 185 }
jonebuckman 0:90962b684403 186
jonebuckman 0:90962b684403 187 void SSD1353_SPI::writeData(char data)
jonebuckman 0:90962b684403 188 {
jonebuckman 0:90962b684403 189 //Set DC to data and select the display
jonebuckman 0:90962b684403 190 m_DC = 1;
jonebuckman 0:90962b684403 191 m_CS = 0;
jonebuckman 0:90962b684403 192
jonebuckman 0:90962b684403 193 //Write the data byte
jonebuckman 0:90962b684403 194 m_SPI.write(data);
jonebuckman 0:90962b684403 195
jonebuckman 0:90962b684403 196 //Deselect the display
jonebuckman 0:90962b684403 197 m_CS = 1;
jonebuckman 0:90962b684403 198 }