[STM32F407VET6] Is it possible to use the BOOT0 pin as GPIO?

Hi,

I'm interested to know what may be happening that STlink can not find the STM32.

A strange thing is that the BOOT0 pin is being used as a GPIO. This pin is actuating an opto coupler (it is connected to pin 1 of a PC817)

What do I need to ensure for the stlink to find STM32? I tried to toggle the state of the BOOT0 and BOOT1 pins, but it did not work.

Thank you.

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Lead III

No, datasheet "Table 6": "Dedicated BOOT0 pin", "Table 7": "BOOT0 I B - VPP".

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