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Problem with pin status after power on

Filipx.87
Associate II

‎2022-05-29 02:05 AM

Hi, I am solving the backlight of the display, which is controlled by a pin, but the problem is the state between power on and initialization, when the display flashes before the pin is initialized. This happens with both positive and negative control logic. It's OK after pressing the reset button, problem only after power on. Is there a solution to stabilize this?0693W00000NqoXVQAZ.png

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Simon V.
ST Employee

‎2022-05-30 02:16 AM

Hello,

May you please share more information about the STM32 reference you are using and on which pin the signal TFT_BL is connected please ?

It could be relative to the bootloader activation during the power on.

Thanks in advance for your answer,

Regards,

Simon

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