COM Port Reset - App Note - Microchip

25 downloads 195 Views 35KB Size Report
The following instructions help you to reset COM ports on Windows machine. WARNING: Backup the registry before editing as we are not responsible for any ...
The following instructions help you to reset COM ports on Windows machine.

WARNING: Backup the registry before editing as we are not responsible for any Windows malfunctions that may occur. CAUTION: Be careful not to remove COM ports that still exist for current products.

STEPS: 1. Run regedit 2. Browse to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\COM Name Arbiter\ComDB 3. Click on ComDB value and change all the FF to 00 4. WE recommend leaving the first two FF FF settings in the ComDB so that any ports less than 16 do not get changed 5. The result should look as shown below: 0000 FF FF 00 00 00 00 00 00 0008 00 00 00 00 00 00 00 00 0010 00 00 00 00 00 00 00 00 0018 00 00 00 00 00 00 00 00 0020 6. This seems to work Ok. However, please back the registry before trying this to be safe.