TFTLCD with FastIO
Fork of TFTLCD by
st7735.cpp
- Committer:
- ttodorov
- Date:
- 2012-12-11
- Revision:
- 10:69571adcfad5
- Parent:
- 9:58b328831d0a
- Child:
- 12:d0978272a340
File content as of revision 10:69571adcfad5:
/* * Copyright (C)2010-2012 Henning Karlsen. All right reserved. * Copyright (C)2012 Todor Todorov. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to: * * Free Software Foundation, Inc. * 51 Franklin St, 5th Floor, Boston, MA 02110-1301, USA * *********************************************************************/ #include "st7735.h" #include "helpers.h" ST7735_LCD::ST7735_LCD( PinName CS, PinName RESET, PinName RS, PinName SCL, PinName SDA, PinName BL ) : LCD( 128, 160, CS, RS, RESET ), _lcd_pin_scl( SCL ), _lcd_pin_sda( SDA ) { if ( BL != NC ) _lcd_pin_bl = new DigitalOut( BL ); else _lcd_pin_bl = 0; } void ST7735_LCD::Initialize( orientation_t orientation ) { _orientation = orientation; wait_ms( 100 ); _lcd_pin_reset = HIGH; wait_ms( 5 ); _lcd_pin_reset = LOW; wait_ms( 15 ); _lcd_pin_reset = HIGH; _lcd_pin_cs = HIGH; _lcd_pin_rs = HIGH; _lcd_pin_scl = HIGH; _lcd_pin_sda = HIGH; if ( _lcd_pin_bl != 0 ) *_lcd_pin_bl = HIGH; wait_ms( 55 ); Activate(); WriteCmd( 0x01 ); // SW reset wait_ms( 120 ); WriteCmd( 0x11 ); // sleep out wait_ms( 120 ); WriteCmd( 0xB1 ); // frame control 1 WriteByteData( 0x01 ); WriteByteData( 0x2C ); WriteByteData( 0x2D ); WriteCmd( 0xB2 ); // frame control 2 WriteByteData( 0x01 ); WriteByteData( 0x2C ); WriteByteData( 0x2D ); WriteCmd( 0xB3 ); // frame control 3 WriteByteData( 0x01 ); WriteByteData( 0x2C ); WriteByteData( 0x2D ); WriteByteData( 0x01 ); WriteByteData( 0x2C ); WriteByteData( 0x2D ); WriteCmd( 0xB4 ); // column inversion WriteByteData( 0x07 ); // ST7735R Power Sequence WriteCmd( 0xC0 ); // power control 1 WriteByteData( 0xA2 ); WriteByteData( 0x02 ); WriteByteData( 0x84 ); WriteCmd( 0xC1 ); // power control 2 WriteByteData( 0xC5 ); WriteCmd( 0xC2 ); // power control 3 WriteByteData( 0x0A ); WriteByteData( 0x00 ); WriteCmd( 0xC3 ); // power control 4 WriteByteData( 0x8A ); WriteByteData( 0x2A ); WriteCmd( 0xC4 ); // power control 5 WriteByteData( 0x8A ); WriteByteData( 0xEE ); WriteCmd( 0xC5 ); // voltage control 1 WriteByteData( 0x0E ); WriteCmd( 0x36 ); //MX, MY, RGB mode WriteByteData( 0xC8 ); // ST7735R Gamma Sequence WriteCmd( 0xE0 ); // gamma positive WriteByteData( 0x0F ); WriteByteData( 0x1A ); WriteByteData( 0x0F ); WriteByteData( 0x18 ); WriteByteData( 0x2F ); WriteByteData( 0x28 ); WriteByteData( 0x20 ); WriteByteData( 0x22 ); WriteByteData( 0x1F ); WriteByteData( 0x1B ); WriteByteData( 0x23 ); WriteByteData( 0x37 ); WriteByteData( 0x00 ); WriteByteData( 0x07 ); WriteByteData( 0x02 ); WriteByteData( 0x10 ); WriteCmd( 0xE1 ); // gamma negative WriteByteData( 0x0F ); WriteByteData( 0x1B ); WriteByteData( 0x0F ); WriteByteData( 0x17 ); WriteByteData( 0x33 ); WriteByteData( 0x2C ); WriteByteData( 0x29 ); WriteByteData( 0x2E ); WriteByteData( 0x30 ); WriteByteData( 0x30 ); WriteByteData( 0x39 ); WriteByteData( 0x3F ); WriteByteData( 0x00 ); WriteByteData( 0x07 ); WriteByteData( 0x03 ); WriteByteData( 0x10 ); WriteCmd( 0x2A ); // set column address WriteByteData( 0x00 ); WriteByteData( 0x00 ); WriteByteData( 0x00 ); WriteByteData( 0x7F ); WriteCmd( 0x2B ); // set row address WriteByteData( 0x00 ); WriteByteData( 0x00 ); WriteByteData( 0x00 ); WriteByteData( 0x9F ); WriteCmd( 0xF0 ); // enable extensions command WriteByteData( 0x01 ); WriteCmd( 0xF6 ); // disable ram power save mode WriteByteData( 0x00 ); WriteCmd( 0x3A ); // interface pixel format (color mode) WriteByteData( 0x05 ); // 65k mode WriteCmd( 0x29 ); // display on Deactivate(); } void ST7735_LCD::Sleep( void ) { Activate(); WriteCmd( 0x28 ); wait_ms( 10 ); WriteCmd( 0x10 ); wait_ms( 125 ); if ( _lcd_pin_bl != 0 ) *_lcd_pin_bl = LOW; Deactivate(); } void ST7735_LCD::WakeUp( void ) { Activate(); WriteCmd( 0x29 ); wait_ms( 10 ); WriteCmd( 0x11 ); wait_ms( 125 ); if ( _lcd_pin_bl != 0 ) *_lcd_pin_bl = HIGH; Deactivate(); } void ST7735_LCD::WriteCmd( unsigned short cmd ) { _lcd_pin_rs = LOW; serializeByte( cmd & 0xFF ); } void ST7735_LCD::WriteData( unsigned short data ) { _lcd_pin_rs = HIGH; serializeByte( ( data >> 8 ) & 0xFF ); serializeByte( data & 0xFF ); } void ST7735_LCD::WriteByteData( unsigned char data ) { _lcd_pin_rs = HIGH; serializeByte( data ); } void ST7735_LCD::SetXY( uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2 ) { if ( _orientation == LANDSCAPE ) { swap( uint16_t, x1, y1 ) swap( uint16_t, x2, y2 ) y1 = _disp_height - y1; y2 = _disp_height - y2; swap( uint16_t, y1, y2 ) } WriteCmdData( 0x2a, x1 ); WriteData( x2 ); WriteCmdData( 0x2b, y1 ); WriteData( y2 ); WriteCmd( 0x2c ); } void ST7735_LCD::SetPixelColor( unsigned short color ) { WriteData( color ); } void ST7735_LCD::serializeByte( unsigned char data ) { for ( int i = 0; i < 8; i++ ) { if ( data & 0x80 ) _lcd_pin_sda = HIGH; else _lcd_pin_sda = LOW; pulseLow( _lcd_pin_scl ); data = data << 1; } }