Closed ddrmax closed 5 years ago
Bodmer
commented
5 years ago Thanks, I do not have one of those screens so will be unable to test. Can you fork the Adafruit library too and make the needed changes. An example sketch for TFT_eSPI will also be needed that includes a link to your Adafruit touch screen variant.
ddrmax
commented
5 years ago Ok when I'm done, i will make the push request with an user setup and a I surely will add a new example as well (for example the TFT_Clock with buttons to change hours / mins / sec
Normally I will make another change: your Touch.h and . cpp will become warpers for your actual touch library and the modified adafruit that if no touch defs are used the they will be Dummy functions and for example i will add two new defs: TOUCH_SPI and TOUCH_ANALOG
if TOUCH_CS is defined it will automatically define TOUCH_SPI
if one of the analog pin defines are defined like TOUCH_XP or TOUCH_YM it will automatically define TOUCH_ANALOG
IF the two are defined: Throw an error
Another Thing is that I will make a push request as well to the Adafruit Touchscreen repo since an issue is open for ESP32 support.
Bodmer
commented
5 years ago OK, I can see you have thought this through very well. All sounds good.
Bodmer
commented
5 years ago Post back when you have made progress.
cipibad
commented
5 years ago @ddrmax, could you share your code? I am new to ESP32 development and have troubles with screen refresh after reading touchscreen on similar setup.
Thanks
ddrmax
commented
5 years ago I have put my initial work here https://github.com/ddrmax/teste_spi
This is quite a dirty code since for now (until I get my hollidays in the begining of january) I can't prepare a more cleaned code to do a push request.
to get at least the screen to refresh (in a safer way) when you to get a point use this function instead of calling directly the adafruit one :
//add this before setup() and loop();
int D1State,D0State,DCState,CSState;
TSPoint Getpoint()
{
D1State=digitalRead(YM);
D0State=digitalRead(XP);
DCState=digitalRead(XM);
CSState=digitalRead(YP);
TSPoint p = ts.getPoint();
pinMode(XP, OUTPUT);
pinMode(XM, OUTPUT);
pinMode(YP, OUTPUT);
pinMode(YM, OUTPUT);
digitalWrite(YP, CSState);
digitalWrite(XM, DCState);
digitalWrite(XP, D0State);
digitalWrite(YM, D1State);
return p;
}
keep in mind that you have to map the returned x and y values to the size of the screen like i have done:
//A large part comes from a modified example provided in my elegoo CD that came with the screen
//Touch For New ILI9341 TP
#define TS_MINX 120
#define TS_MAXX 900
#define TS_MINY 70
#define TS_MAXY 920
//maping used after getting the touchscreen info
bool pressed = (p.z>10)?true:false;
int16_t t_x = map(p.x, TS_MINX, TS_MAXX, tft.width(), 0);
int16_t t_y = (tft.height()-map(p.y, TS_MINY, TS_MAXY, tft.height(), 0));Thank you for help. I'll dig into it, and provide link to working example, if/when I'll manage it:)
LKAT1
commented
7 months ago hey I was trying to create a UI for the same/similar touchscreen, I was having an issue where after one button is pressed the way the coordinates are read is flipped, reading touch inputs from the bottom right instead of the top left `// You need to just currentscreen vairaible, //if statements
// create numbers for the vari
// these pins define the pins being used by the Arduino^^
// this code calibrates the screen Adafruit_TFTLCD tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET);
TouchScreen ts = TouchScreen(XP, YP, XM, YM, 300); // these define the pins used to activate the screen
int currentscreen = 0; bool Camera = 0; bool tracker = false; bool Homevar = false; bool backbutton = 1; bool welcome = true;
void Home() { tft.fillScreen(RED); tft.setCursor(60, 100); tft.setTextSize(2); tft.print("CHOOSE APPLICATION"); tft.fillRect(10, 10, 75, 75, BLUE); tft.fillRect(125, 10, 75, 75, BLUE); tft.fillRect(240, 10, 75, 75, BLUE); // creating buttons for applications, first test out using LED's } void Welcome() { tft.fillScreen(WHITE); //WHat to fill the screen colour with- colours stated above tft.drawRect(0, 0, 319, 240, WHITE); //the rectangularshape that the screen fills tft.setCursor(5, 5); //set cursor is where text will begin on the screen, top right corner of the text tft.setTextColor(BLACK); tft.setTextSize(2); tft.print("WELCOME LKAT"); //add parameters tft.fillRect(50, 180, 210, 40, BLACK); tft.drawRect(50, 180, 210, 40, GREEN); tft.setCursor(60, 190); tft.setTextColor(WHITE); tft.setTextSize(2); }
void LED() { tft.setCursor(5, 5); tft.fillScreen(BLUE); tft.print("HELLO"); }
void setup() { Serial.begin(9600); tft.reset(); uint16_t identifier = tft.readID(); tft.begin(identifier); tft.setRotation(1); //changing this value between 1 and 0 will change the layout of the text on screen. landscape portarait currentscreen = 0;
Welcome(); }
void loop() {
TSPoint p = ts.getPoint(); if (p.z > ts.pressureThreshhold) { p.y = map(p.y, TS_MINY, TS_MAXY, 0, 480); p.x = map(p.x, TS_MINX, TS_MAXX, 0, 320); pinMode(XM, OUTPUT); pinMode(YP, OUTPUT);
Serial.println(p.x);
Serial.println(p.y);
//set screen resolution
if (currentscreen == 0) {
if (p.x > 50 && p.x < 260 && p.y > 180 && p.y < 260) {
currentscreen = 1;
Homevar = true;
Home();
}
}
if (currentscreen == 1 && Homevar == true) {
//check coordinates, screen has rotated
if (p.y > 10 && p.y < 85 && p.x > 10 && p.x < 85) {
LED();
currentscreen = 2;
}
//other if
}} }`
Hello @Bodmer , During some time in my work, I made a 2.8" 320x240 ILI9341 parallel display with a TP28017 TouchScreen (a one that uses a reading of analog values) work on a ESP32 without any screen refreshing crash. link to the screen: This could be a good way to resolve the issue #106.
The mods that I have done are:
modify the adafruit Touchscreen Library to correlate the adc bandwith (12 bits instead of 10).
Add a touchscreen maping to the screen size.
added a workaround for the pin state that check the state of the touchscreen pins and restore them after calling the TouchScreen::getpoint() function.
I will be doing a fork of your repo and do a push request when my workaroud is no more a dirty hack.