Serial Port Datareceived

1. Serialport Datareceived Example

I am not sure if this is an actual bug or currently a limitation of Mono running on Linux but the DataReceived event of the serial port control is never triggered when there's incoming data on an open serial port.To produce this condition I used VS 2019 to write an application in VB targeting.NET 4.7.2 that uses the serial port control. Transmitting data using WriteLine always work as I see the data on the remote device. Only when the remote device transmits data back does the DataReceived event fail to fire off. This does not appear to be a hardware issue either as I can use Putty on all of these devices and communicate fine with my remote devices.In my troubleshooting I found that this occurs regardless of architecture as I tested this with both a Raspberry Pi 3B+ with Raspbian and a Lenovo P51 running Debian 9.8. Both devices were tested with Mono 5.18.1 and 5.20 with the same failure mode. If I run the exact same code on Windows 7 or 10 it works as expected and data is always received.

Serialport Datareceived Example

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