VS Arduino - What is "'touch' hardware serial port"

Apr 19^th, 2024 at 3:17pm (UTC)

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VS Arduino › Visual Micro › Visual Studio 2017, 2019, 2022 › What is "'touch' hardware serial port"

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What is "'touch' hardware serial port" (Read 1709 times)

Trek19 Junior Member Offline Posts: 82 Location: UK Joined: Dec 2^nd, 2013	What is "'touch' hardware serial port" Aug 7^th, 2020 at 4:33pm	Print Post
	I get this message but dont understand it, any ideas. The Upload happens but I cant see the output in the VM Serial monitor but I can see it in CoolTerm. Uploading 'Sketch1' to 'Adafruit Feather Bluefruit Sense' using 'COM3' Unable to 'touch' hardware serial port: COM3. Now assuming selected port is bootloader port. This might still fail, have you got the correct board selected? Upgrading target on COM4 with DFU package lease\Sketch1.ino.zip. Flow control is disabled, Single bank, Touch disabled ######################################## ######################################## ######################################## ################################## Activating new firmware Device programmed. The upload process has finished. via 'COM4'


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Simon@Visual Micro Administrator Offline Posts: 2174 Joined: Feb 13^th, 2019	Re: What is "'touch' hardware serial port" Reply #1 - Aug 7^th, 2020 at 4:58pm	Print Post
	This most often means the port is in use by another process. To perform the upload, the port will need closing in all external programs such as CoolTerm, before performing the upload. The Serial Monitor in Visual Micro automatically disconnects when uploading.


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Trek19 Junior Member Offline Posts: 82 Location: UK Joined: Dec 2^nd, 2013	Re: What is "'touch' hardware serial port" Reply #2 - Aug 7^th, 2020 at 5:09pm	Print Post
	I got this message before I started CoolTerm and I cant see any other devices using the port. I set the upload port to COM3 but it says it uploads on COM4 but I cant see a COM4 in Device Manager. Maybe something about the Adafruit Feather Bluefruit Sense board is causing it?


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Tim@Visual Micro Administrator Offline Posts: 12076 Location: United Kingdom Joined: Apr 10^th, 2010	Re: What is "'touch' hardware serial port" Reply #3 - Aug 7^th, 2020 at 8:22pm	Print Post
	Please give the info requested in yellow above btw: Some boards do need to boot onto a different port for upload. That's called "touching the port" at 1200 baud to force the reboot then we detect the new port. Thanks
	« Last Edit: Aug 7^th, 2020 at 8:23pm by Tim@Visual Micro »

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Trek19 Junior Member Offline Posts: 82 Location: UK Joined: Dec 2^nd, 2013	Re: What is "'touch' hardware serial port" Reply #4 - Aug 8^th, 2020 at 7:20am	Print Post
	Verbose as requested.

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Tim@Visual Micro Administrator Offline Posts: 12076 Location: United Kingdom Joined: Apr 10^th, 2010	Re: What is "'touch' hardware serial port" Reply #5 - Aug 8^th, 2020 at 11:52am	Print Post
	I think ensure the correct usb driver is installed for the board and ensure your sketch code starts serial at 115200. CoolTerm and some other serial viewers don't use C# and manage devices at a very low level. Therefore don't always suffer from usb issues. I see it is using the Microsoft Serial USB driver. I am not sure if that is the correct one for your board.


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