EW Windows Uploader - Communication Ports Window EW Avionics Logo
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The Communication Ports window displays the status of the open communication ports and the progress of upload operations being performed on them. It's the main way to see what is going on in the program.

When EW Windows Uploader starts it automatically displays the Communication Ports window. This window can also be displayed using the main window View | Communication Ports... menu item.

Communication Ports Window

Also on startup, EW Windows Uploader attempts to open a range of possible communication ports - all devices with names in the range "COM0" to "COM12", inclusive. The normal PC serial ports are called "COM1" through "COM4". The other names are chosen with the intention that they should work with additional non-standard serial ports such as those on multi-port cards and those provided by USB adapters. By their nature, any such serial ports are non-standard so their operation with EW Windows Uploader cannot be guaranteed.

The Communication Ports window shows the ports for which any of the following conditions apply:

In other words, all the standard or interesting ports are shown but the non-standard ports for which nothing has happened are ignored.

The status of each of the ports is updated as operations proceed. For example, when a logger is connected either the general model type or, for model D and E loggers, the serial number will be shown. When the text "awaiting user input" appears next to a port it means one of the Logger Main Windows is displayed and the user should choose an operation to perform on the logger, such as uploading a trace or downloading settings to a model D.

Note: the Communications Port window is not updated while certain dialog boxes, such as Save As..., are open.

Most of the time there is no need to open or close ports manually but when EW Windows Uploader is to be used at the same time as other programs which access the serial ports this may be needed. For example, if EW Windows Uploader is started and successfully opens COM1 and COM2 but COM2 is to be used for uploads from loggers made by a different manufacturer then that port must be closed before the other manufacturer's program can be started. Similarly, if a port was in use by another program when EW Windows Uploader was started but is now available for additional uploads then it can be opened.

Another time when manually opening ports is useful is if a USB-to-serial adapter is plugged in while the program is running. The Open All Ports command is particularly handy in this case as it will find the port even if the driver has allocated an unpredictable port number.

Opening and closing ports is done using the Open Port, Open All Ports and Close Port buttons.

Open Port prompts for the number of the port to open. Open All Ports attempts to open all of the supported port numbers which are not currently open. Close Port closes the port selected in the Communication Ports window's list. Closing a port while a logger is connected will abort any operation in progress and cause a command to be sent to the logger to switch it off before the port is actually closed.

The Close button closes the Communication Ports window. It has no effect on the individual ports.

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