Differences between revisions 1 and 15 (spanning 14 versions)
Revision 1 as of 2012-08-29 23:52:27
Size: 746
Editor: AA6YQ
Comment:
Revision 15 as of 2018-07-04 19:41:50
Size: 1697
Editor: AA6YQ
Comment:
Deletions are marked like this. Additions are marked like this.
Line 1: Line 1:
=== Resetting a Serial Port's RTS and DTR Signals when Windows Starts === == Resetting a Serial Port's RTS and DTR Signals when Windows Starts ==
Line 5: Line 5:
 1. in a '''CMD window''', execute the following commands: You can reset a serial port's RTS and DTR signals on Windows startup by creating a ''Windows Batch File'' containing the appropriate command, and then creating a ''Window Shortcut'' to this Batch File in the {{{Windows Startup Folder}}}. To reset COM3's RTS and DTR signals, for example, use '''Windows Notepad''' to create a Batch File named {{{RESETCOM3.bat}}} that contains
Line 7: Line 7:
   a. {{{set devmgr_show_nonpresent_**devices=1}}}
   a. {{{cd c:\windows\system32}}}
   a. {{{start devmgmt.msc}}}
{{{MODE COM3: dtr=off rts=off}}}
Line 11: Line 9:
 1. in the '''Device Manager''' window that appears after step 1.c,
   a. in the '''View''' menu, select '''Show Hidden Devices'''
   a. click on the + or triangle to the left of Ports to display a list of all present Ports
   a. click the Port you wish to delete, and strike the '''Delete''' key
   a. when asked, confirm your intention to delete the Port
On Windows XP, the pathname of the {{{Windows Startup Folder}}} is

{{{C:\Documents and Settings\%username%\Start Menu\Programs\Startup}}}

where {{{%username%}}} is the username you used to log in to Windows.

On Windows 7, the pathname of the {{{Windows Startup Folder}}} is

{{{C:\users\%username%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup}}}

To create the required Shortcut, run two instances of '''Windows Explorer'''. In the first instance, navigate to the folder in which you created {{{RESETCOM3.bat}}}; in the second instance, navigate to the {{{Windows Startup Folder}}}. Then depress-and-hold the ALT key while dragging {{{RESETCOM3.bat}}} from the first instance of Windows Explorer to the second; when you release the left mouse button, a shortcut to {{{RESETCOM3.bat}}} will appear in the {{{Windows Startup Folder}}}.
Line 17: Line 22:
[[DXLabDiscussionGroup|Post a question or suggestion on the DXLab Discussion Group]]
Line 18: Line 24:
[:TransceiverControl:Transceiver Control] [[TransceiverControl|Getting Started with Transceiver Control]]
Line 20: Line 26:
[:GettingStarted:Getting Started with DXLab] [[Multimode_Setup|Setting up CW, Phone, PSK, and RTTY Operation]]

[[WindowsTricks| Windows Tricks]]

[[GettingStarted|Getting Started with DXLab]]

Resetting a Serial Port's RTS and DTR Signals when Windows Starts

de Joe W4TV

You can reset a serial port's RTS and DTR signals on Windows startup by creating a Windows Batch File containing the appropriate command, and then creating a Window Shortcut to this Batch File in the Windows Startup Folder. To reset COM3's RTS and DTR signals, for example, use Windows Notepad to create a Batch File named RESETCOM3.bat that contains

MODE COM3: dtr=off rts=off

On Windows XP, the pathname of the Windows Startup Folder is

C:\Documents and Settings\%username%\Start Menu\Programs\Startup

where %username% is the username you used to log in to Windows.

On Windows 7, the pathname of the Windows Startup Folder is

C:\users\%username%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup

To create the required Shortcut, run two instances of Windows Explorer. In the first instance, navigate to the folder in which you created RESETCOM3.bat; in the second instance, navigate to the Windows Startup Folder. Then depress-and-hold the ALT key while dragging RESETCOM3.bat from the first instance of Windows Explorer to the second; when you release the left mouse button, a shortcut to RESETCOM3.bat will appear in the Windows Startup Folder.


Post a question or suggestion on the DXLab Discussion Group

Getting Started with Transceiver Control

Setting up CW, Phone, PSK, and RTTY Operation

Windows Tricks

Getting Started with DXLab

ResetCOMDTRRTS (last edited 2018-07-04 19:41:50 by AA6YQ)