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Hi There,
I'm trying to use a Pi running IoT Core to communicate with a device that claims it needs a start bit (as well as a stop bit.) I don't see start bits mentioned in the documentation for SerialDevice in Windows. What's a start bit and can I use one in Windows
IoT Core on the Pi?
Cheers
Jason.
Jason Timmins - MBM Ltd - Business IT Support

Hi Jason,
A start bit typically signals the start of data transmission on the serial line. If the device needs a start bit as well as a stop bit, your program probably needs to send the start\stop bit from the RPi.
Have you referred to this documentation at all? Search for "Serial UART".
https://developer.microsoft.com/en-us/windows/iot/docs/pinmappingsrpi
The page goes through RPi pin mappings including the Serial UART and also provides some sample code as well that you could deploy on your RPi.
Hope it helps,
Amy

I'm trying to use a Pi running IoT Core to communicate with a device that claims it needs a start bit
as already mentioned the Pin mappings pages include a Serial UART sample
What's a start bit and can I use one in Windows IoT Core on the Pi?
please take a look at https://en.wikipedia.org/wiki/Universal_asynchronous_receiver/transmitter to understand the basics of Transmitting
and receiving serial data
basically when transmitting the UART first sends a start bit followed by the data the parity and stop bit