Unknown chip id! 0x421

[Odega]

Hello, so I am completely new to working with STM boards in general. 

I just got a brand new stm32f446re board, and I tried to upload some code to it through Linux. And I do mean brand new, I haven't uploaded or downloaded any code to it before this attempt. However, when I attempted to do so, I got an error message:

"WARN common.c: unknown chip id! 0x421"

So, I looked around for a bit and tried a simple command: st-info --probe to see some internal stuff on it. But I was told this:

"No such file or directory

version:V2J33S25

serial: 066DFF534871754867255336

flash: 0 (pagesize: 0)

sram: 0

chipid: 0x421"

After spending roughly about two weeks trying to find stuff online, I couldn't figure out anything on what to do. So, I am very much open to suggestions if anybody knows anything about this error.

Thank you very much in advance for any help.

[Andrew Neil]

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@Odega wrote:

 I am completely new to working with STM boards in general. .

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Do you have experience with any other microcontroller(s)? With programming in general? Electronics?

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@Odega wrote:

I just got a brand new stm32f446re board

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What board, exactly - ST? 3rd-party? custom?

What, exactly, are you using to do the downloading?

https://community.st.com/t5/community-guidelines/how-to-write-your-question-to-maximize-your-chances-to-find-a/ta-p/575228

[SofLit]

Hello @Odega  and welcome to the community,

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@Odega wrote:

I just got a brand new stm32f446re board, and I tried to upload some code to it through Linux. And I do mean brand new, I haven't uploaded or downloaded any code to it before this attempt. .

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What tool are you using to connect to the board?

What board are you using? NUCLEO-F446RE?

[Odega]

Thank you for the welcome to the community.

I am using a Nucleo-F446RE.

And to connect to the board I am just using a USB cord to connect to said board. Beyond that, I am just using the Terminal that came with the laptop I was given. 

[Andrew Neil]

So what software tools are you using to download the code to the board?

And what code are you trying to download?

You didn't answer about your background/experience - that would help in knowing how to pitch replies...

[Odega]

I am an electrical engineering student, so I have some basic experience with Stm32 boards, but nothing overly expansive. I've used keil to program one before, and know some C and Python programming languages. 

I'm just working with an stm32 nucleo f446re. And I am just using a USB cord. I have been told that for this specific code that I am working with, I was told that using a USB has worked in the past and to just do that. 

Thank you for that link btw. I'm completely new to writing on message boards like this so I didn't know any of that.

[Odega]

And for the record, I am just compiling the code on Linux (I don't know the specifics of the version of Linux or anything). I'm uploading a compiled set of code that was pre-written before I ever joined this project. But from what I have been told, the overall code portion shouldn't matter.

I got this new board because a previous one was having connection issues with the laptop I am working on, so I was hoping that the new board would work right off the bat. Should have known it is never just that easy.

[Tesla DeLorean]

Some old/broken tools..

case 0x421 : printf("STM32F446\n"); break; // Been known here for a while..

[SofLit]

Hello @Odega ,

You still didn't provide what tool you are using to compile the project and to upload it to the MCU.

Example for ST tools:

- STM32CubeIDE: to compile/uploaded and debug available on Linux platform.

- STM32CubeProgrammer: to manipulate the internal/enteral Flash and option bytes.

- On board ST-LINK: as in-circuit debugger and programmer to connect and upload you program to the MCU. USB data cable needs to be connected on CN1 as indicated by the red rectangle.

[Odega]

What I am using to compile the code is Ubuntu Linux. Beyond that and typing up a simple list of commands, I don't use any external tools. I wanted to try CubeProgrammer but I could never get it to work on Ubuntu.

Apologies for the delayed response.