How can I generate 2nd Serial Port with processor having only 1 uart
hi, try search for "software UART". http://www.programmersheaven.com/zone5/cat27/2369.htm SiLabs: http://www.silabs.com/public/documents/tpub_doc/anote/Microcontrollers/Precision_Mixed-Signal/en/an115.pdf Philips: http://www.standardics.philips.com/support/documents/microcontrollers/pdf/an446.pdf Atmel: http://www.atmel.com/dyn/resources/prod_documents/doc3ab877f2ec329.pdf Intel: http://www.intel.com/design/mcs51/applnots/270531.htm etc Regards, Oleg
Or add an external UART. External UARTs are available with serial or parallel interfaces: http://www.8052.com/forum/read.phtml?id=113550 http://www.8052.com/forumchat/read.phtml?id=112381 Or maybe "roll your own" in a CPLD or FPGA: http://www.8052.com/forum/read.phtml?id=113623 Or, of course, just choose a chip with 2 UARTs: http://www.keil.com/dd/search_parm.asp