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Forum Index : Microcontroller and PC projects : Problem with ARMMITE L452 + ILI9341 - MMbasic crash with pin A7

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sagt3k

Guru

Joined: 01/02/2015
Location: Italy
Posts: 313

Posted: 02:09pm 01 Dec 2021

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Hi to everybody

Using the Nucleo-L452 and display ILI9341, I found a problem with pin23 (A7 or SPI MOSI) set as DOUT, when OPTION TOUCH is enabled (MMBasic crash).
Otherwise, If OPTION TOUCH is disabled (command: OPTION TOUCH DISABLE) the pin 23 works correctly.

This is the code:

OPTION LCDPANEL ILI9341, RLANDSCAPE, 14, 24, 62
OPTION TOUCH 25, 26
SETPIN 23, DOUT
PIN(23)=1 < --- MMBasic crashes at this point

Thanks for your suggestion
Antonio

matherp
Guru

Joined: 11/12/2012
Location: United Kingdom
Posts: 10616

Posted: 02:40pm 01 Dec 2021

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Sorry not much I can do. I've never has a 452 and only included support at someone's request without any testing. I seem to remember it is different from the "fully" supported chips in various ways but can't recollect what. The fact it is OK when you set it as an output (which sets the pin low) but crashes when it is set to 1 may mean there is just an electrical problem (short etc.) or duff chip

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