UART Bootloader for STM32F412VGTx

[shanmukhi]

As mentioned in the AN2606 document for STM32F412VGTx MCU(Custom chip), I am using USART2 (PD6/PD5) for UART bootloader using STM32CubeProgrammer. But I am getting an error message as attached. Help me to resolve this issue.

[Andrew Neil]

Welcome to the forum.

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@shanmukhi wrote:

STM32F412VGTx MCU (Custom chip)

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STM32F412VGTx is not a custom chip.

Did you mean STM32F412VGTx on a custom board ?

If so, you need to give details of that board:

How to write your question to maximize your chances to find a solution

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@shanmukhi wrote:

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So have you checked those things?

[TDK]

One of these is likely wrong:

• Ensure power rails are all connected correctly. All pins.
• Ensure VCAP voltage is 1.2 V
• Hold BOOT0 high during reset to boot into the bootloader.
• Ensure wiring is correct.

[Andrew Neil]

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@Andrew Neil wrote:

Did you mean STM32F412VGTx on a custom board ?

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If so, is it a known-good commercial product, or your own design?

Have you checked the design against Application note AN4488, "Getting started with STM32F4xxxx MCU hardware development" ?

Has this board ever worked ?

[Tesla DeLorean]

Any signals on PA10 or PB11 that might be recognized as initial contact?

You only get one-shot at reset to make a connection, if that fails you must with BOOT=HIGH to try again.

Present schematic for what you've implemented, saves everyone have to guess at causes..