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I'm beginning to program a serial interface between an 89c52 and Atmel's 4051. Does anyone have a program in C that I can disect? To start, all I really want to do is send a character from the master to the slave and have the slave light and LED if it gets its address. That'll help me get a prototype going for now. I have only 3 slaves for now- call them A,B and C. Any SIMPLE ideas? Thanks.
You could use a PC and its Hyperterminal utility. although it sends and receives all characters, it prints only ASCII. You can try Software InnoVations Inc for a bi-directional protocol analyzer after you get farther along. http://www.sinnovations.com