I am using Arduino TFT LCD screen.The link is given below.
I am trying to interface this with Arduino Micro Board.I have used the Example sketch from Arduino IDE to display the Text in the TFT screen.
(Arduino IDE->File->Example->TFT->Arduino->TFTDisplay Text)
Code:
/*
Arduino TFT text example
This example demonstrates how to draw text on the
TFT with an Arduino. The Arduino reads the value
of an analog sensor attached to pin A0, and writes
the value to the LCD screen, updating every
quarter second.
This example code is in the public domain
Created 15 April 2013 by Scott Fitzgerald
*/
#include <TFT.h> // Arduino LCD library
#include <SPI.h>
// pin definition for the Uno
#define cs 10
#define dc 9
#define rst 8
// pin definition for the Leonardo
// #define cs 7
// #define dc 0
// #define rst 1
// create an instance of the library
TFT TFTscreen = TFT(cs, dc, rst);
// char array to print to the screen
char sensorPrintout[4];
void setup() {
// Put this line at the beginning of every sketch that uses the GLCD:
TFTscreen.begin();
// clear the screen with a black background
TFTscreen.background(0, 0, 0);
// write the static text to the screen
// set the font color to white
TFTscreen.stroke(255,255,255);
// set the font size
TFTscreen.setTextSize(2);
// write the text to the top left corner of the screen
TFTscreen.text("Sensor Value :\n ",0,0);
// ste the font size very large for the loop
TFTscreen.setTextSize(5);
}
void loop() {
// Read the value of the sensor on A0
String sensorVal = String(analogRead(A0));
// convert the reading to a char array
sensorVal.toCharArray(sensorPrintout, 4);
// set the font color
TFTscreen.stroke(255,255,255);
// print the sensor value
TFTscreen.text(sensorPrintout, 0, 20);
// wait for a moment
delay(250);
// erase the text you just wrote
TFTscreen.stroke(0,0,0);
TFTscreen.text(sensorPrintout, 0, 20);
}
If I remove the Highlighted code,then I will get the sensor value without blinking.But if there is any changes in the Sensor value, the new value will overwrite on the Previous value and finally value is not visible in the display.I want to display the text without blink and new value should be update clearly.
Can anyone help me to solve this problem?