PH3/BOOT0 pin on the STM32L432KC

[Abijith]

May I know where is the PH3/BOOT0 pin on the STM32L432KC board? I don't see any GPIO pin for that. It is connected to the F103 chip onboard but how do I use that?

[Amel NASRI]

Hi @Abijith ,

This post was moved to a new thread from the original one Nucleo L432KC bootloader via UART failed.

To be able to support you properly, could you please precise:

- are you facing an issue similar to the one in the original thread?

- are you using same device? which board?

- what are you attempting to do?

Any farther details should be helpful.

-Amel

[Abijith]

It's somewhat the same error.
I have set the options bytes properly and entered the system bootloader but when I try to connect via UART it doesn't connect. When I send 0x7F from the PC through the UART, I receive 0x40 on my STM32. I am using the STM32L432KC Nucleo 32 Board.

I want to program the firmware using uart.

[Joe WILLIAMS]

Hi Abijith

This post has been escalated to the ST Online Support Team for additional assistance.  We'll contact you directly.

Kind Regards

Joe

STMicro Support

[Karl Yamashita]

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but when I try to connect via UART it doesn't connect. When I send 0x7F from the PC through the UART, I receive 0x40 on my STM32. 

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So if you say it doesn't connect, then how you going to even receive any data? Or maybe i am interpreting your issue incorrectly? Can you be a little more descriptive on what you mean by doesn't connect?