Error 'Invalid Delay value' when connect using UART protocol

[Phumphathai]

STM32CubeProgrammer v2.21.0

[KDJEM.1]

Hello @Phumphathai and welcome to the community;

Could you please give more detail about the issue, which STM32 are you using? Are you using STM32 board?

Could you please check the STM32CubeProgrammer version? The latest STM32CubeProgrammer version is 2.19.0.

Could you please try to update your toolchain and to use STM32CubeProgrammer 2.19.0 version 

Please let me know if the issue is solved or not?

Thank you.

Kaouthar

[Andrew Neil]

Welcome to the forum.

As @KDJEM.1 said, you need to give some more details - Please see How to write your question to maximize your chances to find a solution for best results.

[Pavel A.]

[Phumphathai]

Hello

I use STM32L476VG with custom board. But without any board connect to USB to UART this still happen.

 

I use STM32CubeProgrammer v2.21.0 I think this is latest version

As @Pavel A. show. Delay Pulse text box is read only and cannot fill any value

Thank you

[Andrew Neil]

---

@Phumphathai wrote:

Delay Pulse text box is read only and cannot fill any value

---

So, presumably, this must be coming from some configuration that you should supply?

And that value is missing or invalid.

The first message just tells you that it's using a default instead.

The rest of the video shows that there is no response from your target.

---

@Phumphathai wrote:

without any board connect to USB to UART this still happen.

---

Of course it would - with no board connected, there will certainly be no reply!

---

@Phumphathai wrote:

I use STM32L476VG with custom board.

---

So please give details - schematic?

Are you using the System Bootloader, or a custom bootloader?

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

[Phumphathai]

---

@Andrew Neil wrote:

---

---

So, presumably, this must be coming from some configuration that you should supply?

And that value is missing or invalid.

The first message just tells you that it's using a default instead.

How can I supply?

Text box is read only. I cannot fill value. And it so annoys when I use.

Delay Pulse can be fill when RTS or DTS have set to pulse. But I don't want any RTS DTR pulse.

---

---

@Phumphathai wrote:

without any board connect to USB to UART this still happen.

---

---

I show to connect without board. Invalid Delay Value Error still show. So, this does not depend on board I use.

Thank you

[KDJEM.1]

Hello @Phumphathai,

Could you please try to download the STM32CubeProgrammer from this link.

I'm using STM32CubeProgrammer2.19.0 version and Nucleo-L476RG.

I connect boot0(pin) to VDD as mentioned in AN2606.

And I'm able to connect board using UART

Thank you.

Kaouthar

[Karl Yamashita]

Where did you get v2.21.0 from? 

The latest that I see that can be downloaded is 2.19.0 for all OS

[Phumphathai · Accepted solution]

Hello

I update to this version 2 day ago. Now I uninstall and reinstall with v2.19.0

I haven't found any new updates.

Maybe I update to Test on Production Version.

Thank you.