I have attached the TFTLCD and the TouchScreen library files as well. Unfortunately I haven't referred to any text displaying example prior to writing the code. I just looked at the syntax and started with the program.
As far as the syntax is concerned, the '2' corresponds to the font size of the text character.
Reference : http://www.seeedstudio.com/wiki/2.8''_TFT_Touch_Shield_V1.0
Thanks for replying MorganS!
Here's a code (unnecessarily lengthy
) that was in the example section. It's titled graphics test and tests various functions like drawRect(), fillScreen() and so on but doesn't use drawChar() function. They have used the tft.println() function instead.
#define LCD_CS A3
#define LCD_CD A2
#define LCD_WR A1
#define LCD_RD A0
// you can also just connect RESET to the arduino RESET pin
#define LCD_RESET A4
//Duemilanove/Diecimila/UNO/etc ('168 and '328 chips) microcontoller:
// Color definitions
#define BLACK 0x0000
#define BLUE 0x001F
#define RED 0xF800
#define GREEN 0x07E0
#define CYAN 0x07FF
#define MAGENTA 0xF81F
#define YELLOW 0xFFE0
#define WHITE 0xFFFF
#include "TFTLCD.h"
TFTLCD tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET);
void setup(void) {
Serial.begin(9600);
Serial.println("8 Bit LCD test!");
tft.reset();
tft.initDisplay();
testtext(RED);
delay(2000);
testlines(CYAN);
delay(500);
testfastlines(RED, BLUE);
delay(500);
testdrawrects(GREEN);
delay(500);
testfillrects(YELLOW, MAGENTA);
delay(500);
tft.fillScreen(BLACK);
testfillcircles(10, MAGENTA);
testdrawcircles(10, WHITE);
delay(500);
testtriangles();
delay(500);
testfilltriangles();
delay(500);
testRoundRect();
delay(500);
testFillRoundRect();
}
void loop(void) {
for (uint8_t rotation=0; rotation<4; rotation++) {
tft.setRotation(rotation);
testtext(RED);
delay(1000);
}
}
void testFillRoundRect() {
tft.fillScreen(BLACK);
for (uint16_t x=tft.width(); x > 20 ; x-=6) {
tft.fillRoundRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, x/8, tft.Color565(0, x, 0));
}
}
void testRoundRect() {
tft.fillScreen(BLACK);
for (uint16_t x=0; x < tft.width(); x+=6) {
tft.drawRoundRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, x/8, tft.Color565(x, 0, 0));
}
}
void testtriangles() {
tft.fillScreen(BLACK);
for (uint16_t i=0; i<tft.width()/2; i+=5) {
tft.drawTriangle(tft.width()/2, tft.height()/2-i,
tft.width()/2-i, tft.height()/2+i,
tft.width()/2+i, tft.height()/2+i, tft.Color565(0, 0, i));
}
}
void testfilltriangles() {
tft.fillScreen(BLACK);
for (uint16_t i=tft.width()/2; i>10; i-=5) {
tft.fillTriangle(tft.width()/2, tft.height()/2-i,
tft.width()/2-i, tft.height()/2+i,
tft.width()/2+i, tft.height()/2+i,
tft.Color565(0, i, i));
tft.drawTriangle(tft.width()/2, tft.height()/2-i,
tft.width()/2-i, tft.height()/2+i,
tft.width()/2+i, tft.height()/2+i, tft.Color565(i, i, 0));
}
}
void testtext(uint16_t color) {
tft.fillScreen(BLACK);
tft.setCursor(0, 20);
tft.setTextColor(color);
tft.setTextSize(1);
tft.println("Hello World!");
tft.setTextSize(2);
tft.println(1234.56);
tft.setTextSize(3);
tft.println(0xDEADBEEF, HEX);
}
void testfillcircles(uint8_t radius, uint16_t color) {
for (uint16_t x=radius; x < tft.width(); x+=radius*2) {
for (uint16_t y=radius; y < tft.height(); y+=radius*2) {
tft.fillCircle(x, y, radius, color);
}
}
}
void testdrawcircles(uint8_t radius, uint16_t color) {
for (uint16_t x=0; x < tft.width()+radius; x+=radius*2) {
for (uint16_t y=0; y < tft.height()+radius; y+=radius*2) {
tft.drawCircle(x, y, radius, color);
}
}
}
void testfillrects(uint16_t color1, uint16_t color2) {
tft.fillScreen(BLACK);
for (uint16_t x=tft.width()-1; x > 6; x-=6) {
//Serial.println(x, DEC);
tft.fillRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color1);
tft.drawRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color2);
}
}
void testdrawrects(uint16_t color) {
tft.fillScreen(BLACK);
for (uint16_t x=0; x < tft.width(); x+=6) {
tft.drawRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color);
}
}
void testfastlines(uint16_t color1, uint16_t color2) {
tft.fillScreen(BLACK);
for (uint16_t y=0; y < tft.height(); y+=5) {
tft.drawHorizontalLine(0, y, tft.width(), color1);
}
for (uint16_t x=0; x < tft.width(); x+=5) {
tft.drawVerticalLine(x, 0, tft.height(), color2);
}
}
void testlines(uint16_t color) {
tft.fillScreen(BLACK);
for (uint16_t x=0; x < tft.width(); x+=6) {
tft.drawLine(0, 0, x, tft.height()-1, color);
}
for (uint16_t y=0; y < tft.height(); y+=6) {
tft.drawLine(0, 0, tft.width()-1, y, color);
}
tft.fillScreen(BLACK);
for (uint16_t x=0; x < tft.width(); x+=6) {
tft.drawLine(tft.width()-1, 0, x, tft.height()-1, color);
}
for (uint16_t y=0; y < tft.height(); y+=6) {
tft.drawLine(tft.width()-1, 0, 0, y, color);
}
tft.fillScreen(BLACK);
for (uint16_t x=0; x < tft.width(); x+=6) {
tft.drawLine(0, tft.height()-1, x, 0, color);
}
for (uint16_t y=0; y < tft.height(); y+=6) {
tft.drawLine(0, tft.height()-1, tft.width()-1, y, color);
}
tft.fillScreen(BLACK);
for (uint16_t x=0; x < tft.width(); x+=6) {
tft.drawLine(tft.width()-1, tft.height()-1, x, 0, color);
}
for (uint16_t y=0; y < tft.height(); y+=6) {
tft.drawLine(tft.width()-1, tft.height()-1, 0, y, color);
}
}
void testBars() {
uint16_t i,j;
for(i=0; i < tft.height(); i++)
{
for(j=0; j < tft.width(); j++)
{
if(i>279) tft.writeData(WHITE);
else if(i>239) tft.writeData(BLUE);
else if(i>199) tft.writeData(GREEN);
else if(i>159) tft.writeData(CYAN);
else if(i>119) tft.writeData(RED);
else if(i>79) tft.writeData(MAGENTA);
else if(i>39) tft.writeData(YELLOW);
else tft.writeData(BLACK);
}
}
}
glcdfont.c (8.14 KB)
TFTLCD.cpp (23.3 KB)
TFTLCD.h (5.22 KB)
TouchScreen.cpp (5.28 KB)
TouchScreen.h (725 Bytes)