teensy 4.1 pin 11 (MOSI) stopped working

S

spirit18

New member
i made a pcb 1 year ago that can fit a ILI9341
been playing with it for a year never had a issue.

1 month ago i did something stupid and broke the teensy 4.1
so i got a new one.

which worked well for a month with the ILI9341 but somehow the ILI9341 stopped displaying anything.
so i went in to bedug mode and found out pin 11 (MOSI) was stuck at 2.3V (outputLOW = 2.3V, outputHIGH = 2.9v)

so i pushed on the XRT1062 chip and somehow i got it unstuck outputLOW was 0v again.

but the ILI9341 gives garbled screen output

the cpu is set to default 600mhz and spi speed is set to 20mhz
and i use kurtE's library

just wanted to point this out.
 
uhmm realy strange its working again.
only when i use tft.useFrameBuffer(true); the screen output is garbled again.
 
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