I did not yet check the interrupt settings as I assumed that the SPI library delivered with Teensyduino is perconfigured correctly.
I my assumption wrong?
I did some more investigation:
SDCARD is initialized by
#define SD_CONFIG SdioConfig(FIFO_SDIO)
..
if (!SD.begin(SD_CONFIG)) {
..
linked libraries:
SdFat library Version 2.1.0 in folder: C:\Program Files...
I have a TFT display with touch (ili9341 / XPT2046) attached to my Teensy 4.1.
These pins are used:
#define ADAGFX_PIN_CS 0
#define ADAGFX_PIN_DC 5
#define ADAGFX_PIN_RST 3
#define XPT2046_CS 4
#define ADAGFX_PIN_MOSI...