Verify if a COM port is connected or not

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Verify if a COM port is connected or not

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#1 by (1 votes)

2

Is it possible via the line of code to check whether a COM port is connected or not?

Analyze: I have a program POS (Point of Sale) where it has the integration with SiTef, through a PinPad (card machine) and for it to work, the PinPad must be connected to a COM port.

PinPad Online:

Now, in order to make the system more robust and avoid exception when trying to perform the procedure with PinPad , if it is not connected, I would check via the line of code if it is or not connected and assign this check in the respective events that do the integration.

c# windows winforms

asked by anonymous 02.01.2018 / 19:19

1 answer

Use require () (or another method) in NodeJS as in PHP Div appear once

score 1 · Accepted Answer

It is not possible to know if the connector is plugged in, but most of the equipment is to monitor the CTS signal that is used for data flow control.

if(port.CtsEnable)
{
}

If the hardware manufacturer is not using this port, then another option would be to send a status request command through the port and check for a possible response. Remember that if the device is disconnected, it will have the same effect as when disconnected.