TFT_print() problem after TFT_read_touch() call about esp32_tft_library

[viethoangitvn]

Hi Chris,
I am using ILI9341 and an NFC Reader that share the same SPI bus of ESP ( different CS pins) and can see same problem. Did you find the reason of this issue?

Thank you,
Viet Hoang.

[chrdan]

Hi Viet,

before integrating this library into my AquariOS project (https://danner-net.de/ao.htm) in order to control an ILI9341/XPT2046 device, I had to fix minor bugs in _direct_send(), readPixel() and _drawLine() and rewrite touch_get_data() and TFT_read_touch_xpt2046().

What I still experience is a wrong background color of the first character that's drawn with TFT_print() after switching from ts_spi to disp_spi, which I wasn't able to sort out. That's why I have to do a dummy "TFT_print( " ", x, y);" between polling the touch device and intended TFT_print() calls, which as a side effect only causes a hardly noticeable flicker. Nevertheless it would be nice to get that fixed.

Kind regards

Chris

[sieren]

@chrdan do you mind posting your touch rewrites somewhere? I'm running into the same issue apparently.

[mekkoli]

same problem for me with XPT2046 and loboris great library.
anyone has solved this issue ?
@chrdan have you posted anywhere your solution ?