COM port no longer shows in device manager

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坐,2019-03-09 02:28
#1
michael12344
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Joined:2019-01-29 23:17
COM port no longer shows in device manager

Hi,

As the title says, the device was showing up in device manager but is no longer showing up. When I try to use tera term the port is also not visible. How can I resolve this issue as I would like to use the UART capabilities.

Keywords:
COM Port
Device:
DA14585
Tue, 2019-03-12 17:23
PM_Dialog
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Joined:2018-02-08 11:03
Hi michael12344,

Hi michael12344,

Do you have a custom board or any of our development boards? Could you please try I with an other USB cable and in a different COM port? If the DA14585 is still alive, you should detect it at least in the device manager.

Thanks, PM_Dialog

Thu, 2019-03-28 21:26
michael12344
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Last seen:1 year 11 months ago
Joined:2019-01-29 23:17
Hi,

Hi,

I am using the basic development kit board. I have tried the device on different ports, cables, and computers without success. The board seems to be working otherwise and the J-link driver still shows up under USB controllers when plugged in. The device doesn't show up under the Ports menu. I happend to have another basic development kit and it all works on the same computer. I have noticed that when using Keil on the fully functioning board that I get a prompt to update the firmware version. Is it possible that updating the firmware (J-link V6.30h) on the other device has messed it up in some way?

Tue, 2019-04-02 16:21
PM_Dialog
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Hi michael12344,

Hi michael12344,

Could you please make sure that you have the correct jumper configuration? The jumpers should be in the same position as described in the Figure 2: The DA14585/586 Basic Kit Jumper Setting ofUM-B-048 DA14585 & DA14586 Getting Started Guide with the Basic-Development Kitdocument. Also, I would strongly suggest you to check the power rails. Are you able to download firmware into the System-Ram with the usage of Keil tool?

Thanks, PM_Dialog