Can i read BOOT0 pin state from program?

Hello.

Can i read state of BOOT0 pin in STM32F030F4P6?

My uC always turn on with BOOT0 GND, but i need to have dual purpose pin BOOT0 and have possibility to read only state of this pin.

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Chief

The datasheet marks BOOT0 as dedicated boot pin, so there is no way to do so.

Guru

See if you can use SYSCFG_CFGR1 to read the memory mapping at boot.

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Associate

I just think that if i can set BOOT1 by software that is also possible to read BOOT0 throught some registers.

I check SYSCFG and it stays all 0 even if i pull up BOOT0 pin.

It looks that i have to short pin 1 (boot0) and 2 and then read state.

Chief

SYSCFG_CFGR1 shows the state of Boot0 at powerup, not at the moment of the query. That my be enough for your problem.

Associate

Unfortunately this isn't enough. I have to use GPIO and short them with BOOT0 pin.

Thank You for help.

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