PORTS Forum
Ports and Interfaces => Serial Ports => Topic started by: Prasad on September 25, 2012, 11:14:41 pm
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Hi,
I have a 16c550 UART interfaced externally to a Blackfin DSP . I want to use this UART for sensing position of a 3- pole switch.
For this I am thinking of the RS232 modem control lines to interface to the key positions and upon detecting a particular position, the corresponding control line will go high or low( interrupt or polling based)
Any idea how to realise this logic.
Thanks ,
Prasad
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In .NET, see the SerialPort class's CtsHolding, DsrHolding, RtsEnable, and DtrEnable properties.
http://msdn.microsoft.com/en-us/library/system.io.ports.serialport.aspx