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Serial Port Driver
Good Morning,
I am have some trouble with a serial port driver. We have a driver created to utilize a pair of HSUARTS coming directly off of Apollo Lake Atom CPU. Everything work functions properly when using TeraTerm, but when I try to open the port using the .NET framwork (SerialPort.Open()), it complains that the attached device is not functioning properly. I'm assuming this is a driver issue because when I look at the IRP_MJ_DEVICE_CONTROL return when getting the properties, ProvSubType is unspecifiec (image link https://imgur.com/a/fVOokXp). I have zero driver experience and am looking for recommendations on how to go about troubleshooting this. Any assistance would be greatly appreciated.
Thanks.
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Comments
Why do you assume that? I mean... why this SPECIFIC assumption?
I think this is unlikely to be a driver bug.
The Provider SubType being "unspecified" looks to me to be entirely legitimate.
Isn't the source code for SerialPort.Open() publicly available? ISTR lots of assumptions and weirdness with this C# class.
Peter
Peter Viscarola
OSR
@OSRDrivers
(Sorry to FUP my own post...)
Yes... the Serial Port class source code IS available publicly. So... sounds like a debugging session is in order for the OP.
Peter
Peter Viscarola
OSR
@OSRDrivers