[reset] st-flash reset can be a hardware reset?

[feathertw]

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• Programmer/board type: e.g Stlink/v1, Stlink/v2, Stlink/v2-onboard
• Programmer firmware version: e.g STSW-LINK007 2.27.15
• Operating system: e.g Linux, Mac OS X, Windows (with specific version)
• Stlink tools version and/or git commit hash: e.g v1.1.0/git-c722056
• Stlink commandline tool name: e.g st-info, st-flash, st-util
• Target chip (and optional board): e.g STM32F402VG (STM32Fxxx Discovery)

A as-detailed description possible of the problem with debug output when available.

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I found the command "st-flash reset" can send a reset info to a stm32 chip
but it's not whole system reset,
for example:
If one led is on, but after "st-flash reset", it will still on but I think it should off after boot whole system.

I think it's because "st-flash reset" is "core reset", not "system reset" in st windows stlink tool,
so it will operate arm cpu to reset, the peripheral will not reset,

hope it will be more option let user can do hardware reset =)

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Output:

OUTPUT/ERROR of the commandline tool(s)

Expected/description:
short description of the expected value

Thank you,
The stlink project maintainers

[xor-gate]

Thats a good question, there indeed two different resets. There are some other issues related to this. I'm not sure how we can fix this.

[xor-gate]

I have just merged a possible fix from PR #534. Could you test latest master?

[feathertw]

Haha, it works now, And I can find that at Reset Pin of SWD in stm32f4-discovery, there is a low signal when I key "st-flash reset". Thank you, and HAPPY NEW YEAR =) FEA 2016-12-30 19:02 GMT+08:00 Jerry Jacobs <notifications@github.com>:

…

I have just merged a possible fix from PR #534 <#534>. Could you test latest master? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#533 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABxGsilL8tvqXo4Vu6hzzP3PkfgFBUhlks5rNOSugaJpZM4LV_8a> .

[xor-gate]

Thanks for reporting back!
Kind regards,

[feathertw]

Hello again =) I found that a strange things in st-link reset, I use the stlink V2 (the image I post, but actually I am not sure it's from st or not) I can use only GND,SWDIO,SWCLK(without reset pin) to burn code into stm32 And I can use ST-Link Utility in windows "System Reset" to reset whole stm32 system(including reset peripheral) I have no idea why I don't connect reset pin and it still can work hardware reset, But in texane stlink, it need connect reset pin to operate hardware reset, Is it possible to do hardware reset without connecting reset pin in texane stlink? if it can, it's more flexible and can save the reset pin connecting Thank you =) Fea [image: 內置圖片 1] 2017-01-02 6:20 GMT+08:00 Jerry Jacobs <notifications@github.com>:

…

Closed #533 <#533>. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#533 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABxGsm0vY6cWDrLokLXO8raYlzUENxg6ks5rOCbBgaJpZM4LV_8a> .

[xor-gate]

Hi @feathertw could you open a new issue and note the system reset register write instead of asserting the reset line? As system reset command is unrelated to hardware reset. You replied to this issue by email and the image is not visible because you need to edit the issue at github itself.

Thanks!

[rewolff]

Hi Nightwalker,
I've run into this "semi-hardware reset" through SWD issue myself. Do you remember another issue related to this from me? I'm pretty sure I have reported it, but just like here it might be hidden as a comment to another issue.
Anyway. I'll try to test the ASAP, which worst case is 2 weeks from now (by which time I'll have forgotten).....

[Nightwalker-87]

@rewolff: That's ok, don't bother about it too much. Your feedback is helpful as well.
I think we may have false friends here looking at the link to the PR. I'll dereference this.

[Nightwalker-87]

Closed by #1107.