/*************************************************************************
* Arduino Text & Bitmap Display Library for color LCDs
* Distributed under GPL v2.0
* Developed by Stanley Huang <stanleyhuangyc@gmail.com>
* For more information, please visit http://arduinodev.com
*************************************************************************/
#include <Arduino.h>
#include <SPI.h>
#include "MultiLCD.h"
/* Pins
D4 : RESET
D5 : CS
D6 : D/C
D7 : LED
D11 : MOSI
D12 : MISO
D13 : SCK
*/
#define PIN_RESET 4
#define PIN_CS 5
#define PIN_DC 6
#define PIN_LED 7
//Basic Colors
#define RED 0xf800
#define GREEN 0x07e0
#define BLUE 0x001f
#define BLACK 0x0000
#define YELLOW 0xffe0
#define WHITE 0xffff
//Other Colors
#define CYAN 0x07ff
#define BRIGHT_RED 0xf810
#define GRAY1 0x8410
#define GRAY2 0x4208
//TFT resolution 240*320
#define MIN_X 0
#define MIN_Y 0
#define MAX_X 239
#define MAX_Y 319
#define TFT_CS_LOW digitalWrite(PIN_CS, LOW)
#define TFT_CS_HIGH digitalWrite(PIN_CS, HIGH)
#define TFT_DC_LOW digitalWrite(PIN_DC, LOW)
#define TFT_DC_HIGH digitalWrite(PIN_DC, HIGH)
#define TFT_RST_OFF digitalWrite(PIN_RESET, HIGH)
#define TFT_RST_ON digitalWrite(PIN_RESET, LOW)
#define YP A2 // must be an analog pin, use "An" notation!
#define XM A1 // must be an analog pin, use "An" notation!
#define YM 14 // can be a digital pin, this is A0
#define XP 17 // can be a digital pin, this is A3
#define TS_MINX 116*2
#define TS_MAXX 890*2
#define TS_MINY 83*2
#define TS_MAXY 913*2
void LCD_ILI9341::sendCMD(uint8_t index)
{
TFT_DC_LOW;
TFT_CS_LOW;
SPI.transfer(index);
TFT_CS_HIGH;
}
void LCD_ILI9341::WRITE_DATA(uint8_t data)
{
TFT_DC_HIGH;
TFT_CS_LOW;
SPI.transfer(data);
TFT_CS_HIGH;
}
void LCD_ILI9341::sendData(uint16_t data)
{
uint8_t data1 = data>>8;
uint8_t data2 = data&0xff;
TFT_DC_HIGH;
TFT_CS_LOW;
SPI.transfer(data1);
SPI.transfer(data2);
TFT_CS_HIGH;
}
void LCD_ILI9341::WRITE_Package(uint16_t *data, uint8_t howmany)
{
uint16_t data1 = 0;
uint8_t data2 = 0;
TFT_DC_HIGH;
TFT_CS_LOW;
uint8_t count=0;
for(count=0;count<howmany;count++)
{
data1 = data[count]>>8;
data2 = data[count]&0xff;
SPI.transfer(data1);
SPI.transfer(data2);
}
TFT_CS_HIGH;
}
uint8_t LCD_ILI9341::Read_Register(uint8_t Addr, uint8_t xParameter)
{
uint8_t data=0;
sendCMD(0xd9); /* ext command */
WRITE_DATA(0x10+xParameter); /* 0x11 is the first Parameter */
TFT_DC_LOW;
TFT_CS_LOW;
SPI.transfer(Addr);
TFT_DC_HIGH;
data = SPI.transfer(0);
TFT_CS_HIGH;
return data;
}
void LCD_ILI9341::begin (void)
{
pinMode(PIN_CS, OUTPUT);
pinMode(PIN_DC, OUTPUT);
pinMode(PIN_LED, OUTPUT);
pinMode(PIN_RESET, OUTPUT);
SPI.begin();
TFT_CS_HIGH;
TFT_DC_HIGH;
uint8_t i=0, TFTDriver=0;
TFT_RST_ON;
delay(10);
TFT_RST_OFF;
for(i=0;i<3;i++)
{
TFTDriver = readID();
}
sendCMD(0xCB);
WRITE_DATA(0x39);
WRITE_DATA(0x2C);
WRITE_DATA(0x00);
WRITE_DATA(0x34);
WRITE_DATA(0x02);
sendCMD(0xCF);
WRITE_DATA(0x00);
WRITE_DATA(0XC1);
WRITE_DATA(0X30);
sendCMD(0xE8);
WRITE_DATA(0x85);
WRITE_DATA(0x00);
WRITE_DATA(0x78);
sendCMD(0xEA);
WRITE_DATA(0x00);
WRITE_DATA(0x00);
sendCMD(0xED);
WRITE_DATA(0x64);
WRITE_DATA(0x03);
WRITE_DATA(0X12);
WRITE_DATA(0X81);
sendCMD(0xF7);
WRITE_DATA(0x20);
sendCMD(0xC0); //Power control
WRITE_DATA(0x23); //VRH[5:0]
sendCMD(0xC1); //Power control
WRITE_DATA(0x10); //SAP[2:0];BT[3:0]
sendCMD(0xC5); //VCM control
WRITE_DATA(0x3e); //Contrast
WRITE_DATA(0x28);
sendCMD(0xC7); //VCM control2
WRITE_DATA(0x86); //--
sendCMD(0x36); // Memory Access Control
WRITE_DATA(0x48); //C8
sendCMD(0x3A);
WRITE_DATA(0x55);
sendCMD(0xB1);
WRITE_DATA(0x00);
WRITE_DATA(0x18);
sendCMD(0xB6); // Display Function Control
WRITE_DATA(0x08);
WRITE_DATA(0x82);
WRITE_DATA(0x27);
sendCMD(0xF2); // 3Gamma Function Disable
WRITE_DATA(0x00);
sendCMD(0x26); //Gamma curve selected
WRITE_DATA(0x01);
sendCMD(0xE0); //Set Gamma
WRITE_DATA(0x0F);
WRITE_DATA(0x31);
WRITE_DATA(0x2B);
WRITE_DATA(0x0C);
WRITE_DATA(0x0E);
WRITE_DATA(0x08);
WRITE_DATA(0x4E);
WRITE_DATA(0xF1);
WRITE_DATA(0x37);
WRITE_DATA(0x07);
WRITE_DATA(0x10);
WRITE_DATA(0x03);
WRITE_DATA(0x0E);
WRITE_DATA(0x09);
WRITE_DATA(0x00);
sendCMD(0XE1); //Set Gamma
WRITE_DATA(0x00);
WRITE_DATA(0x0E);
WRITE_DATA(0x14);
WRITE_DATA(0x03);
WRITE_DATA(0x11);
WRITE_DATA(0x07);
WRITE_DATA(0x31);
WRITE_DATA(0xC1);
WRITE_DATA(0x48);
WRITE_DATA(0x08);
WRITE_DATA(0x0F);
WRITE_DATA(0x0C);
WRITE_DATA(0x31);
WRITE_DATA(0x36);
WRITE_DATA(0x0F);
sendCMD(0x11); //Exit Sleep
delay(120);
sendCMD(0x29); //Display on
sendCMD(0x2c);
clear();
setBackLight(255);
setColor(0xffff);
setBackColor(0);
}
uint8_t LCD_ILI9341::readID(void)
{
uint8_t i=0;
uint8_t data[3] ;
uint8_t ID[3] = {0x00, 0x93, 0x41};
uint8_t ToF=1;
for(i=0;i<3;i++)
{
data[i]=Read_Register(0xd3,i+1);
if(data[i] != ID[i])
{
ToF=0;
}
}
if(!ToF) /* data!=ID */
{
#if 0
Serial.print("Read TFT ID failed, ID should be 0x09341, but read ID = 0x");
for(i=0;i<3;i++)
{
Serial.print(data[i],HEX);
}
Serial.println();
#endif
}
return ToF;
}
void LCD_ILI9341::setCol(uint16_t StartCol,uint16_t EndCol)
{
sendCMD(0x2A); /* Column Command address */
sendData(StartCol);
sendData(EndCol);
}
void LCD_ILI9341::setPage(uint16_t StartPage,uint16_t EndPage)
{
sendCMD(0x2B); /* Column Command address */
sendData(StartPage);
sendData(EndPage);
}
void LCD_ILI9341::fill(uint16_t x0, uint16_t x1, uint16_t y0, uint16_t y1, uint16_t color)
{
uint8_t Hcolor = color>>8;
uint8_t Lcolor = color&0xff;
setCol(239 - y1, 239 - y0);
setPage(x0, x1);
sendCMD(0x2c); /* start to write to display ra */
/* m */
TFT_DC_HIGH;
TFT_CS_LOW;
for(uint16_t n = (x1-x0+1) * (y1-y0+1); n > 0; n--)
{
SPI.transfer(Hcolor);
SPI.transfer(Lcolor);
}
TFT_CS_HIGH;
}
void LCD_ILI9341::clear(void)
{
setCol(0, 239);
setPage(0, 319);
sendCMD(0x2c); /* start to write to display ra */
/* m */
TFT_DC_HIGH;
TFT_CS_LOW;
for(uint16_t i=0; i<38400; i++)
{
SPI.transfer(0);
SPI.transfer(0);
SPI.transfer(0);
SPI.transfer(0);
}
TFT_CS_HIGH;
m_x = 0;
m_y = 0;
}
void LCD_ILI9341::setXY(uint16_t x0, uint16_t x1, uint16_t y0, uint16_t y1)
{
setCol(239 - x1, 239 - x0);
setPage(y0, y1);
sendCMD(0x2c);
}
void LCD_ILI9341::setPixel(uint16_t poX, uint16_t poY,uint16_t color)
{
setXY(poY, poY, poX, poX);
sendData(color);
}
void LCD_ILI9341::setBackLight(byte brightness)
{
digitalWrite(PIN_LED, brightness ? HIGH : LOW);
}
void LCD_ILI9341::clearPixels(uint16_t pixels)
{
TFT_DC_HIGH;
TFT_CS_LOW;
for(uint16_t i = 0; i < pixels; i++)
{
SPI.transfer(0);
SPI.transfer(0);
}
TFT_CS_HIGH;
}
void LCD_ILI9341::sendPixelData(byte d)
{
for (byte j = 0; j < 8; j++, d <<= 1) {
if (d & 0x80) {
SPI.transfer(m_color[1][1]);
SPI.transfer(m_color[1][0]);
} else {
SPI.transfer(m_color[0][1]);
SPI.transfer(m_color[0][0]);
}
}
}
size_t LCD_ILI9341::write(uint8_t c)
{
if (c == '\n') {
m_y += (m_font + 1) << 3;
return 0;
} else if (c == '\r') {
m_x = 0;
return 0;
}
#ifndef MEMORY_SAVING
if (m_font == FONT_SIZE_SMALL) {
#endif
setXY(m_y, m_y + 7, m_x, m_x + 4);
m_x += 6;
if (m_x >= 320) {
m_y += 8;
m_x = 0;
if (m_y >= 240) m_y = 0;
}
if (c > 0x20 && c < 0x7f) {
byte pgm_buffer[5];
memcpy_P(pgm_buffer, &font5x8[c - 0x21], 5);
TFT_DC_HIGH;
TFT_CS_LOW;
for (byte i = 0; i < 5; i++) {
sendPixelData(pgm_buffer[i]);
}
TFT_CS_HIGH;
} else {
clearPixels(5 * 8);
}
#ifndef MEMORY_SAVING
} else {
setXY(m_y, m_y + 15, m_x, m_x + 7);
m_x += 9;
if (m_x >= 320) {
m_y += 16;
m_x = 0;
if (m_y >= 240) m_y = 0;
}
if (c > 0x20 && c < 0x7f) {
byte pgm_buffer[16];
memcpy_P(pgm_buffer, &font8x16_terminal[c - 0x21], 16);
TFT_DC_HIGH;
TFT_CS_LOW;
for (byte i = 0; i < 16; i += 2) {
sendPixelData(pgm_buffer[i + 1]);
sendPixelData(pgm_buffer[i]);
}
TFT_CS_HIGH;
} else {
clearPixels(8 * 16);
}
}
#endif
}
void LCD_ILI9341::writeDigit(byte n)
{
if (m_font == FONT_SIZE_LARGE) {
setXY(m_y, m_y + 15, m_x, m_x + 15);
m_x += 16;
if (n <= 9) {
byte pgm_buffer[32];
memcpy_P(pgm_buffer, &digits16x16[n], sizeof(pgm_buffer));
TFT_DC_HIGH;
TFT_CS_LOW;
for (byte i = 0; i < 16; i++) {
sendPixelData(pgm_buffer[16 + i]);
sendPixelData(pgm_buffer[i]);
}
TFT_CS_HIGH;
} else {
clearPixels(16 * 16);
}
} else if (m_font == FONT_SIZE_XLARGE) {
setXY(m_y, m_y + 23, m_x, m_x + 15);
m_x += 17;
if (n <= 9) {
byte pgm_buffer[48];
memcpy_P(pgm_buffer, &digits16x24[n], sizeof(pgm_buffer));
TFT_DC_HIGH;
TFT_CS_LOW;
for (int i = 0; i < 48; i += 3) {
sendPixelData(pgm_buffer[i + 2]);
sendPixelData(pgm_buffer[i + 1]);
sendPixelData(pgm_buffer[i]);
}
TFT_CS_HIGH;
} else {
clearPixels(16 * 24);
}
} else {
write(n <= 9 ? ('0' + n) : ' ');
}
}
void LCD_ILI9341::draw(const PROGMEM byte* buffer, uint16_t width, uint16_t height)
{
byte rows = height >> 3;
setXY(m_y, m_y + height - 1, m_x, m_x + width - 1);
uint16_t i = width - 1;
TFT_DC_HIGH;
TFT_CS_LOW;
for (uint16_t i = 0; i < width; i++) {
for (int8_t h = rows - 1; h >= 0; h--) {
byte d = pgm_read_byte(buffer + i + width * h);
sendPixelData(d);
}
}
TFT_CS_HIGH;
m_x += width;
}
void LCD_ILI9341::draw(const PROGMEM byte* buffer, uint16_t width, uint16_t height, byte scaleX, byte ScaleY)
{
byte rows = height >> 3;
setXY(m_y, m_y + height * 2 - 1, m_x, m_x + width * 2 - 1);
uint16_t i = width - 1;
uint16_t w = width << 1;
TFT_DC_HIGH;
TFT_CS_LOW;
for (uint16_t i = 0; i < w; i++) {
for (int8_t h = rows - 1; h >= 0; h--) {
byte d = pgm_read_byte(buffer + (i >> 1) + width * h);
for (byte j = 0; j < 8; j++, d <<= 1) {
if (d & 0x80) {
SPI.transfer(m_color[1][1]);
SPI.transfer(m_color[1][0]);
SPI.transfer(m_color[1][1]);
SPI.transfer(m_color[1][0]);
} else {
SPI.transfer(m_color[0][1]);
SPI.transfer(m_color[0][0]);
SPI.transfer(m_color[0][1]);
SPI.transfer(m_color[0][0]);
}
}
}
};
TFT_CS_HIGH;
m_x += (width << 1);
}