| /* | |
| 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 | |
| http://www.arduino.cc/en/Tutorial/TFTDisplayText | |
| */ | |
| // pin definition for the Uno | |
| // 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); | |
| } | |