Programming and debbuging a STM32G474

[EliazLB]

Hello,

 

I am developing a electronic card that is supposed to be used in an automated test bench. I'm using an STM32G474 to control the card. I have already created one iteration of the card but I realised I made a mistake.

I wanted to use the bootloader to program the card but realised far too late that I didn't install it properly and cannot use it. Plus I'm unable to debug with it.

I now want to replace this system but I can't figure out what to use and how to route it.

I think I could use STlink but I can't seem to figure out how it works and how to route it on the STM.

Could anyone help me figure out this ?

Thank you very much.

[Andrew Neil]

Yes, of course you can use an ST-Link.

Or any SWD-capable probe.

 

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@EliazLB wrote:

I can't seem to figure out how it works and how to route it on the STM.

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I would strongly suggest that you get a Nucleo board, and look at how that does it, and practice using the tools.

See 'Product Evaluation Tools' on the 'Tools & Software' tab of the Product Page:

https://www.st.com/en/microcontrollers-microprocessors/stm32g474re.html#tools-software

See also the STM32 datasheet and ST-Link User manual.

See also Application note AN5093 Getting started with STM32G4 Series hardware development boards.

 

[EliazLB]

I do have a Nucleo board with the right STM on it. 

I just don't really see how it could help as I can't seem to find any schematic I could use.

I'll try to use the AN5093.

But thank you still :)

[Andrew Neil]

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@EliazLB wrote:

I do have a Nucleo board with the right STM on it. 

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Which one do you have?

 

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@EliazLB wrote:

I can't seem to find any schematic I could use.

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The schematics will be on the 'CAD Resources' tab of the Product Page; eg,

https://www.st.com/en/evaluation-tools/nucleo-g474re.html#cad-resources

[waclawek.jan]

Read AN5093 ('G4 hardware design guide), the SWD subchapter of Debug management chapter.

You can also get inspired by the 'G4 Nucleo64 board.

JW

[waclawek.jan]

>I do have a Nucleo board with the right STM on it. 

Well then you already have the STLink on the same board, and it's by default connected to the target STM32, isn't it.

One basic way to test it is to use the CubeProgrammer.

JW

[EliazLB]

Ok thank you guys for the help, I think I figured something out.

I want to use STlinkV2 and the SWD. I plan on using a 1x6, 2.54 header for the debug. the connection would be 

pin1 - SWDIO (PA13)

pin2 - SWCLK (PA14)

pin3 - NRST (PG10 - NRST)

pin4 - VDD

pin5 - GND

pin6 - X

The package for the µc is an LQFP128.

Does that seem good or is there something to change ? I've seen something about SWO but I don't know how useful that is.

Thanks for the help !