I found DMA with getouch have some error

[Zritwo]

when I use esp32-s3 and ili9431 tft with XPT2046, I found when I use initDMA(true),then use get touch pad: ftf.getouch.
the screen will have many lines ,if I touch it will refresh, but when I stop it will be like this photo

75453286731__30A8DFDF-F683-4E09-A2E6-49603CA89ED8.mov

IDE :PlatformIO
TFT_eSPI library version laster

code:

/Change to your screen resolution/
static const uint16_t screenWidth = 320;
static const uint16_t screenHeight = 240;

static lv_disp_draw_buf_t draw_buf_dsc; // Buffer Mode define

// static lv_disp_draw_buf_t draw_buf;
// static lv_color_t buf[ screenWidth * screenHeight / 10 ];

static lv_color_t buf_1[screenWidth * screenHeight / 2]; /A buffer for 2 rows/

static lv_color_t buf_2[screenWidth * screenHeight / 2]; /An other buffer for 2 rows/

TFT_eSPI tft = TFT_eSPI(screenHeight, screenWidth); /* 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_drv, const lv_area_t *area, lv_color_t *color_p)

{
// tft.startWrite();
uint32_t w = (area->x2 - area->x1 + 1);

uint32_t h = (area->y2 - area->y1 + 1);

tft.setSwapBytes(true);

tft.pushImageDMA(area->x1, area->y1, w, h, (uint16_t *)&color_p->full);

// 此处不使用自带的显示刷新，改为DMA

// tft.setAddrWindow( area->x1, area->y1, w, h );

// tft.pushColors( ( uint16_t * )&color_p->full, w * h, true );

lv_disp_flush_ready(disp_drv);
}

/Read the touchpad/
void my_touchpad_read(lv_indev_drv_t *indev_drv, lv_indev_data_t *data)
{

uint16_t touchX, touchY;

bool touched = tft.getTouch(&touchX, &touchY, 600);

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;

}
}

void setup()
{

lv_init();

tft.begin(); /* TFT init /
tft.initDMA(true); // 使能DMA并初始化
tft.setRotation(3); / 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] = {414, 3414, 379, 3372, 1};

// tft.setTouch(calData);

// lv_disp_draw_buf_init(&draw_buf, buf, NULL, screenWidth * screenHeight / 10);
lv_disp_draw_buf_init(&draw_buf_dsc, buf_1, buf_2, screenWidth * screenHeight / 2); // TWO Buffer Mode, 2分屏

/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_dsc;

disp_drv.full_refresh = 1;

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);

/* Try an example. See all the examples

• online: https://docs.lvgl.io/master/examples.html
• source codes: https://github.com/lvgl/lvgl/tree/e7f88efa5853128bf871dde335c0ca8da9eb7731/examples */
  // lv_example_btn_1();

/Or try out a demo. Don't forget to enable the demos in lv_conf.h. E.g. LV_USE_DEMOS_WIDGETS/
// lv_demo_widgets();
// lv_demo_benchmark();
// lv_demo_keypad_encoder();
lv_demo_music();
// lv_demo_printer();
// lv_demo_stress();
}

void loop()
{

lv_timer_handler(); /* let the GUI do its work */
delay(5);
}

[Zritwo]

I found that I add this code will have the problem
bool touched = tft.getTouch(&touchX, &touchY, 600);