How can I generate 2nd Serial Port with processor having only 1 uart
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