Carlos Silva / 24_TFT_STMNUCLEO

Code to run the cheap 2.4" TFT made by mcufriend.com on the STM nucleo. No modifications required, this plugs into the arduino header.

Dependents:   ST7735_V2_STM32F407

Fork of TFTLCD_8bit by Thiha Electronics

st7735.cpp@10:69571adcfad5, 2012-12-11 (annotated)

Committer:
ttodorov
Date:
Tue Dec 11 03:18:43 2012 +0000
Revision:
10:69571adcfad5
Parent:
9:58b328831d0a
Child:
12:d0978272a340
- preliminary support for using 18-bit colors

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ttodorov 9:58b328831d0a 1 /*
ttodorov 9:58b328831d0a 2 * Copyright (C)2010-2012 Henning Karlsen. All right reserved.
ttodorov 9:58b328831d0a 3 * Copyright (C)2012 Todor Todorov.
ttodorov 9:58b328831d0a 4 *
ttodorov 9:58b328831d0a 5 * This library is free software; you can redistribute it and/or
ttodorov 9:58b328831d0a 6 * modify it under the terms of the GNU Lesser General Public
ttodorov 9:58b328831d0a 7 * License as published by the Free Software Foundation; either
ttodorov 9:58b328831d0a 8 * version 2.1 of the License, or (at your option) any later version.
ttodorov 9:58b328831d0a 9 *
ttodorov 9:58b328831d0a 10 * This library is distributed in the hope that it will be useful,
ttodorov 9:58b328831d0a 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
ttodorov 9:58b328831d0a 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
ttodorov 9:58b328831d0a 13 * Lesser General Public License for more details.
ttodorov 9:58b328831d0a 14 *
ttodorov 9:58b328831d0a 15 * You should have received a copy of the GNU Lesser General Public
ttodorov 9:58b328831d0a 16 * License along with this library; if not, write to:
ttodorov 9:58b328831d0a 17 *
ttodorov 9:58b328831d0a 18 * Free Software Foundation, Inc.
ttodorov 9:58b328831d0a 19 * 51 Franklin St, 5th Floor, Boston, MA 02110-1301, USA
ttodorov 9:58b328831d0a 20 *
ttodorov 9:58b328831d0a 21 *********************************************************************/
ttodorov 9:58b328831d0a 22 #include "st7735.h"
ttodorov 9:58b328831d0a 23 #include "helpers.h"
ttodorov 9:58b328831d0a 24
ttodorov 9:58b328831d0a 25 ST7735_LCD::ST7735_LCD( PinName CS, PinName RESET, PinName RS, PinName SCL, PinName SDA, PinName BL )
ttodorov 9:58b328831d0a 26 : LCD( 128, 160, CS, RS, RESET ), _lcd_pin_scl( SCL ), _lcd_pin_sda( SDA )
ttodorov 9:58b328831d0a 27 {
ttodorov 9:58b328831d0a 28 if ( BL != NC ) _lcd_pin_bl = new DigitalOut( BL );
ttodorov 9:58b328831d0a 29 else _lcd_pin_bl = 0;
ttodorov 9:58b328831d0a 30 }
ttodorov 9:58b328831d0a 31
ttodorov 9:58b328831d0a 32 void ST7735_LCD::Initialize( orientation_t orientation )
ttodorov 9:58b328831d0a 33 {
ttodorov 9:58b328831d0a 34 _orientation = orientation;
ttodorov 9:58b328831d0a 35
ttodorov 9:58b328831d0a 36 wait_ms( 100 );
ttodorov 9:58b328831d0a 37 _lcd_pin_reset = HIGH;
ttodorov 9:58b328831d0a 38 wait_ms( 5 );
ttodorov 9:58b328831d0a 39 _lcd_pin_reset = LOW;
ttodorov 9:58b328831d0a 40 wait_ms( 15 );
ttodorov 9:58b328831d0a 41 _lcd_pin_reset = HIGH;
ttodorov 9:58b328831d0a 42 _lcd_pin_cs = HIGH;
ttodorov 9:58b328831d0a 43 _lcd_pin_rs = HIGH;
ttodorov 9:58b328831d0a 44 _lcd_pin_scl = HIGH;
ttodorov 9:58b328831d0a 45 _lcd_pin_sda = HIGH;
ttodorov 9:58b328831d0a 46 if ( _lcd_pin_bl != 0 )
ttodorov 9:58b328831d0a 47 *_lcd_pin_bl = HIGH;
ttodorov 9:58b328831d0a 48 wait_ms( 55 );
ttodorov 9:58b328831d0a 49
ttodorov 9:58b328831d0a 50 Activate();
ttodorov 9:58b328831d0a 51 WriteCmd( 0x01 ); // SW reset
ttodorov 9:58b328831d0a 52 wait_ms( 120 );
ttodorov 9:58b328831d0a 53
ttodorov 9:58b328831d0a 54 WriteCmd( 0x11 ); // sleep out
ttodorov 9:58b328831d0a 55 wait_ms( 120 );
ttodorov 9:58b328831d0a 56
ttodorov 9:58b328831d0a 57 WriteCmd( 0xB1 ); // frame control 1
ttodorov 9:58b328831d0a 58 WriteByteData( 0x01 );
ttodorov 9:58b328831d0a 59 WriteByteData( 0x2C );
ttodorov 9:58b328831d0a 60 WriteByteData( 0x2D );
ttodorov 9:58b328831d0a 61 WriteCmd( 0xB2 ); // frame control 2
ttodorov 9:58b328831d0a 62 WriteByteData( 0x01 );
ttodorov 9:58b328831d0a 63 WriteByteData( 0x2C );
ttodorov 9:58b328831d0a 64 WriteByteData( 0x2D );
ttodorov 9:58b328831d0a 65 WriteCmd( 0xB3 ); // frame control 3
ttodorov 9:58b328831d0a 66 WriteByteData( 0x01 );
ttodorov 9:58b328831d0a 67 WriteByteData( 0x2C );
ttodorov 9:58b328831d0a 68 WriteByteData( 0x2D );
ttodorov 9:58b328831d0a 69 WriteByteData( 0x01 );
ttodorov 9:58b328831d0a 70 WriteByteData( 0x2C );
ttodorov 9:58b328831d0a 71 WriteByteData( 0x2D );
ttodorov 9:58b328831d0a 72
ttodorov 9:58b328831d0a 73 WriteCmd( 0xB4 ); // column inversion
ttodorov 9:58b328831d0a 74 WriteByteData( 0x07 );
ttodorov 9:58b328831d0a 75
ttodorov 9:58b328831d0a 76 // ST7735R Power Sequence
ttodorov 9:58b328831d0a 77 WriteCmd( 0xC0 ); // power control 1
ttodorov 9:58b328831d0a 78 WriteByteData( 0xA2 );
ttodorov 9:58b328831d0a 79 WriteByteData( 0x02 );
ttodorov 9:58b328831d0a 80 WriteByteData( 0x84 );
ttodorov 9:58b328831d0a 81 WriteCmd( 0xC1 ); // power control 2
ttodorov 9:58b328831d0a 82 WriteByteData( 0xC5 );
ttodorov 9:58b328831d0a 83 WriteCmd( 0xC2 ); // power control 3
ttodorov 9:58b328831d0a 84 WriteByteData( 0x0A );
ttodorov 9:58b328831d0a 85 WriteByteData( 0x00 );
ttodorov 9:58b328831d0a 86 WriteCmd( 0xC3 ); // power control 4
ttodorov 9:58b328831d0a 87 WriteByteData( 0x8A );
ttodorov 9:58b328831d0a 88 WriteByteData( 0x2A );
ttodorov 9:58b328831d0a 89 WriteCmd( 0xC4 ); // power control 5
ttodorov 9:58b328831d0a 90 WriteByteData( 0x8A );
ttodorov 9:58b328831d0a 91 WriteByteData( 0xEE );
ttodorov 9:58b328831d0a 92
ttodorov 9:58b328831d0a 93 WriteCmd( 0xC5 ); // voltage control 1
ttodorov 9:58b328831d0a 94 WriteByteData( 0x0E );
ttodorov 9:58b328831d0a 95
ttodorov 9:58b328831d0a 96 WriteCmd( 0x36 ); //MX, MY, RGB mode
ttodorov 9:58b328831d0a 97 WriteByteData( 0xC8 );
ttodorov 9:58b328831d0a 98
ttodorov 9:58b328831d0a 99 // ST7735R Gamma Sequence
ttodorov 9:58b328831d0a 100 WriteCmd( 0xE0 ); // gamma positive
ttodorov 9:58b328831d0a 101 WriteByteData( 0x0F );
ttodorov 9:58b328831d0a 102 WriteByteData( 0x1A );
ttodorov 9:58b328831d0a 103 WriteByteData( 0x0F );
ttodorov 9:58b328831d0a 104 WriteByteData( 0x18 );
ttodorov 9:58b328831d0a 105 WriteByteData( 0x2F );
ttodorov 9:58b328831d0a 106 WriteByteData( 0x28 );
ttodorov 9:58b328831d0a 107 WriteByteData( 0x20 );
ttodorov 9:58b328831d0a 108 WriteByteData( 0x22 );
ttodorov 9:58b328831d0a 109 WriteByteData( 0x1F );
ttodorov 9:58b328831d0a 110 WriteByteData( 0x1B );
ttodorov 9:58b328831d0a 111 WriteByteData( 0x23 );
ttodorov 9:58b328831d0a 112 WriteByteData( 0x37 );
ttodorov 9:58b328831d0a 113 WriteByteData( 0x00 );
ttodorov 9:58b328831d0a 114 WriteByteData( 0x07 );
ttodorov 9:58b328831d0a 115 WriteByteData( 0x02 );
ttodorov 9:58b328831d0a 116 WriteByteData( 0x10 );
ttodorov 9:58b328831d0a 117 WriteCmd( 0xE1 ); // gamma negative
ttodorov 9:58b328831d0a 118 WriteByteData( 0x0F );
ttodorov 9:58b328831d0a 119 WriteByteData( 0x1B );
ttodorov 9:58b328831d0a 120 WriteByteData( 0x0F );
ttodorov 9:58b328831d0a 121 WriteByteData( 0x17 );
ttodorov 9:58b328831d0a 122 WriteByteData( 0x33 );
ttodorov 9:58b328831d0a 123 WriteByteData( 0x2C );
ttodorov 9:58b328831d0a 124 WriteByteData( 0x29 );
ttodorov 9:58b328831d0a 125 WriteByteData( 0x2E );
ttodorov 9:58b328831d0a 126 WriteByteData( 0x30 );
ttodorov 9:58b328831d0a 127 WriteByteData( 0x30 );
ttodorov 9:58b328831d0a 128 WriteByteData( 0x39 );
ttodorov 9:58b328831d0a 129 WriteByteData( 0x3F );
ttodorov 9:58b328831d0a 130 WriteByteData( 0x00 );
ttodorov 9:58b328831d0a 131 WriteByteData( 0x07 );
ttodorov 9:58b328831d0a 132 WriteByteData( 0x03 );
ttodorov 9:58b328831d0a 133 WriteByteData( 0x10 );
ttodorov 9:58b328831d0a 134
ttodorov 9:58b328831d0a 135 WriteCmd( 0x2A ); // set column address
ttodorov 9:58b328831d0a 136 WriteByteData( 0x00 );
ttodorov 9:58b328831d0a 137 WriteByteData( 0x00 );
ttodorov 9:58b328831d0a 138 WriteByteData( 0x00 );
ttodorov 9:58b328831d0a 139 WriteByteData( 0x7F );
ttodorov 9:58b328831d0a 140 WriteCmd( 0x2B ); // set row address
ttodorov 9:58b328831d0a 141 WriteByteData( 0x00 );
ttodorov 9:58b328831d0a 142 WriteByteData( 0x00 );
ttodorov 9:58b328831d0a 143 WriteByteData( 0x00 );
ttodorov 9:58b328831d0a 144 WriteByteData( 0x9F );
ttodorov 9:58b328831d0a 145
ttodorov 9:58b328831d0a 146 WriteCmd( 0xF0 ); // enable extensions command
ttodorov 9:58b328831d0a 147 WriteByteData( 0x01 );
ttodorov 9:58b328831d0a 148 WriteCmd( 0xF6 ); // disable ram power save mode
ttodorov 9:58b328831d0a 149 WriteByteData( 0x00 );
ttodorov 9:58b328831d0a 150
ttodorov 9:58b328831d0a 151 WriteCmd( 0x3A ); // interface pixel format (color mode)
ttodorov 9:58b328831d0a 152 WriteByteData( 0x05 ); // 65k mode
ttodorov 9:58b328831d0a 153 WriteCmd( 0x29 ); // display on
ttodorov 9:58b328831d0a 154
ttodorov 9:58b328831d0a 155 Deactivate();
ttodorov 9:58b328831d0a 156 }
ttodorov 9:58b328831d0a 157
ttodorov 9:58b328831d0a 158 void ST7735_LCD::Sleep( void )
ttodorov 9:58b328831d0a 159 {
ttodorov 9:58b328831d0a 160 Activate();
ttodorov 9:58b328831d0a 161 WriteCmd( 0x28 );
ttodorov 9:58b328831d0a 162 wait_ms( 10 );
ttodorov 9:58b328831d0a 163 WriteCmd( 0x10 );
ttodorov 9:58b328831d0a 164 wait_ms( 125 );
ttodorov 9:58b328831d0a 165 if ( _lcd_pin_bl != 0 )
ttodorov 9:58b328831d0a 166 *_lcd_pin_bl = LOW;
ttodorov 9:58b328831d0a 167 Deactivate();
ttodorov 9:58b328831d0a 168 }
ttodorov 9:58b328831d0a 169
ttodorov 9:58b328831d0a 170 void ST7735_LCD::WakeUp( void )
ttodorov 9:58b328831d0a 171 {
ttodorov 9:58b328831d0a 172 Activate();
ttodorov 9:58b328831d0a 173 WriteCmd( 0x29 );
ttodorov 9:58b328831d0a 174 wait_ms( 10 );
ttodorov 9:58b328831d0a 175 WriteCmd( 0x11 );
ttodorov 9:58b328831d0a 176 wait_ms( 125 );
ttodorov 9:58b328831d0a 177 if ( _lcd_pin_bl != 0 )
ttodorov 9:58b328831d0a 178 *_lcd_pin_bl = HIGH;
ttodorov 9:58b328831d0a 179 Deactivate();
ttodorov 9:58b328831d0a 180 }
ttodorov 9:58b328831d0a 181
ttodorov 9:58b328831d0a 182 void ST7735_LCD::WriteCmd( unsigned short cmd )
ttodorov 9:58b328831d0a 183 {
ttodorov 9:58b328831d0a 184 _lcd_pin_rs = LOW;
ttodorov 9:58b328831d0a 185 serializeByte( cmd & 0xFF );
ttodorov 9:58b328831d0a 186 }
ttodorov 9:58b328831d0a 187
ttodorov 9:58b328831d0a 188 void ST7735_LCD::WriteData( unsigned short data )
ttodorov 9:58b328831d0a 189 {
ttodorov 9:58b328831d0a 190 _lcd_pin_rs = HIGH;
ttodorov 9:58b328831d0a 191 serializeByte( ( data >> 8 ) & 0xFF );
ttodorov 9:58b328831d0a 192 serializeByte( data & 0xFF );
ttodorov 9:58b328831d0a 193 }
ttodorov 9:58b328831d0a 194
ttodorov 9:58b328831d0a 195 void ST7735_LCD::WriteByteData( unsigned char data )
ttodorov 9:58b328831d0a 196 {
ttodorov 9:58b328831d0a 197 _lcd_pin_rs = HIGH;
ttodorov 9:58b328831d0a 198 serializeByte( data );
ttodorov 9:58b328831d0a 199 }
ttodorov 9:58b328831d0a 200
ttodorov 9:58b328831d0a 201 void ST7735_LCD::SetXY( uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2 )
ttodorov 9:58b328831d0a 202 {
ttodorov 9:58b328831d0a 203 if ( _orientation == LANDSCAPE )
ttodorov 9:58b328831d0a 204 {
ttodorov 9:58b328831d0a 205 swap( uint16_t, x1, y1 )
ttodorov 9:58b328831d0a 206 swap( uint16_t, x2, y2 )
ttodorov 9:58b328831d0a 207 y1 = _disp_height - y1;
ttodorov 9:58b328831d0a 208 y2 = _disp_height - y2;
ttodorov 9:58b328831d0a 209 swap( uint16_t, y1, y2 )
ttodorov 9:58b328831d0a 210 }
ttodorov 9:58b328831d0a 211
ttodorov 9:58b328831d0a 212 WriteCmdData( 0x2a, x1 );
ttodorov 9:58b328831d0a 213 WriteData( x2 );
ttodorov 9:58b328831d0a 214 WriteCmdData( 0x2b, y1 );
ttodorov 9:58b328831d0a 215 WriteData( y2 );
ttodorov 9:58b328831d0a 216 WriteCmd( 0x2c );
ttodorov 9:58b328831d0a 217 }
ttodorov 9:58b328831d0a 218
ttodorov 10:69571adcfad5 219 void ST7735_LCD::SetPixelColor( unsigned short color )
ttodorov 10:69571adcfad5 220 {
ttodorov 10:69571adcfad5 221 WriteData( color );
ttodorov 10:69571adcfad5 222 }
ttodorov 10:69571adcfad5 223
ttodorov 9:58b328831d0a 224 void ST7735_LCD::serializeByte( unsigned char data )
ttodorov 9:58b328831d0a 225 {
ttodorov 9:58b328831d0a 226 for ( int i = 0; i < 8; i++ )
ttodorov 9:58b328831d0a 227 {
ttodorov 9:58b328831d0a 228 if ( data & 0x80 ) _lcd_pin_sda = HIGH;
ttodorov 9:58b328831d0a 229 else _lcd_pin_sda = LOW;
ttodorov 9:58b328831d0a 230 pulseLow( _lcd_pin_scl );
ttodorov 9:58b328831d0a 231 data = data << 1;
ttodorov 9:58b328831d0a 232 }
ttodorov 9:58b328831d0a 233 }