Description
My setup:
I’m using Esp32 Devkitv1 with platformio. The Esp32devkit is connected to a raspberry pi display, the display control module is ILI9486 and the touch driver is XPT2046.
My problem:
With all the demos, Scroll and slide-on pages work perfectly, but clicking on buttons and the keyboard does not. I re-calibrated the touch’s calData but nothing changes. The only thing that works for me is the draw function on the touch calibrate code.
What MCU/Processor/Board and compiler are you using?
I’m using Esp32 devkitv1 with platformio
What do you want to achieve?
I want to fix the touch issues on my setup
What have you tried so far?
I have tried to re-calibrate the touch’s calData a few times but nothing changed
Code to reproduce
Add the relevant code snippets here.
The code block(s) should be between ```c
and ```
tags:
#include <lvgl.h>
#include <TFT_eSPI.h>
#include <SPI.h>
/*If you want to use the LVGL examples,
make sure to install the lv_examples Arduino library
and uncomment the following line.
#include <lv_examples.h>
*/
#include "demos/lv_demos.h"
/*Change to your screen resolution*/
static const uint16_t screenWidth = 480;
static const uint16_t screenHeight = 320;
static lv_disp_draw_buf_t draw_buf;
static lv_color_t buf[screenWidth * 10];
TFT_eSPI tft = TFT_eSPI(screenWidth, screenHeight); /* TFT instance */
#if LV_USE_LOG != 0
/* Serial debugging */
void my_print(const char *buf)
{
Serial.printf(buf);
Serial.flush();
}
#endif
/* Display flushing */
void my_disp_flush(lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p)
{
uint32_t w = (area->x2 - area->x1 + 1);
uint32_t h = (area->y2 - area->y1 + 1);
tft.startWrite();
tft.setAddrWindow(area->x1, area->y1, w, h);
tft.pushColors((uint16_t *)&color_p->full, w * h, true);
tft.endWrite();
lv_disp_flush_ready(disp);
}
/*Read the touchpad*/
void my_touchpad_read(lv_indev_drv_t *indev_driver, lv_indev_data_t *data)
{
uint16_t touchX, touchY;
bool touched = tft.getTouch(&touchX, &touchY);
if (!touched)
{
data->state = LV_INDEV_STATE_REL;
}
else
{
data->state = LV_INDEV_STATE_PR;
/*Set the coordinates*/
data->point.x = touchX;
data->point.y = touchY;
Serial.print("Data x ");
Serial.println(touchX);
Serial.print("Data y ");
Serial.println(touchY);
}
}
void setup()
{
Serial.begin(115200); /* prepare for possible serial debug */
String LVGL_Arduino = "Hello Arduino! ";
LVGL_Arduino += String('V') + lv_version_major() + "." + lv_version_minor() + "." + lv_version_patch();
Serial.println(LVGL_Arduino);
Serial.println("I am LVGL_Arduino");
lv_init();
#if LV_USE_LOG != 0
lv_log_register_print_cb(my_print); /* register print function for debugging */
#endif
tft.begin(); /* TFT init */
tft.setRotation(9); /* Landscape orientation, flipped */
/*Set the touchscreen calibration data,
the actual data for your display can be acquired using
the Generic -> Touch_calibrate example from the TFT_eSPI library*/
uint16_t calData[5] = {266, 3631, 198, 3629, 3};
tft.setTouch(calData);
lv_disp_draw_buf_init(&draw_buf, buf, NULL, screenWidth * 10);
/*Initialize the display*/
static lv_disp_drv_t disp_drv;
lv_disp_drv_init(&disp_drv);
/*Change the following line to your display resolution*/
disp_drv.hor_res = screenWidth;
disp_drv.ver_res = screenHeight;
disp_drv.flush_cb = my_disp_flush;
disp_drv.draw_buf = &draw_buf;
lv_disp_drv_register(&disp_drv);
/*Initialize the (dummy) input device driver*/
static lv_indev_drv_t indev_drv;
lv_indev_drv_init(&indev_drv);
indev_drv.type = LV_INDEV_TYPE_POINTER;
indev_drv.read_cb = my_touchpad_read;
lv_indev_drv_register(&indev_drv);
#if 0
/* Create simple label */
lv_obj_t *label = lv_label_create( lv_scr_act() );
lv_label_set_text( label, LVGL_Arduino.c_str() );
lv_obj_align( label, LV_ALIGN_CENTER, 0, 0 );
#else
/* Try an example from the lv_examples Arduino library
make sure to include it as written above.
lv_example_btn_1();
*/
// uncomment one of these demos
// lv_demo_widgets(); // OK
// lv_demo_benchmark(); // OK
lv_demo_keypad_encoder(); // works, but I haven't an encoder
// lv_demo_music(); // NOK
// lv_demo_printer();
// lv_demo_stress(); // seems to be OK
#endif
Serial.println("Setup done");
}
void loop()
{
lv_timer_handler(); /* let the GUI do its work */
delay(5);
}
Screenshot and/or video
If possible, add screenshots and/or videos about the current state.
Video of my problem:
https://drive.google.com/file/d/1oV6LKtWjL8Q5lhzUwRH1cJOFlIUIAH6e/view?usp=sharing
https://drive.google.com/file/d/1PtpEM3pIjD8sBfn6xfS2BDi3qhrLh5nS/view?usp=sharing
tft_Espi User set up :
#define RPI_DISPLAY_TYPE
#define ILI9486_DRIVER
#define TOUCH_CS 18
#define TFT_MISO 2
#define TFT_MOSI 12
#define TFT_SCLK 14
#define TFT_CS 5
#define TFT_DC 15
#define TFT_RST 13
#define LOAD_GLCD
#define LOAD_FONT2
#define LOAD_FONT4
#define LOAD_FONT6
#define LOAD_FONT7
#define LOAD_FONT8
#define LOAD_GFXFF
#define SMOOTH_FONT
#define SPI_FREQUENCY 26000000
#define SPI_TOUCH_FREQUENCY 2500000