rs232 to GPIB convertor

[venu 759]

We are required to build a GPIB to RS232C convertor as a part of senior year project . We do not have much expertise in this field .We have to build the interface from scratch.
Uptil now we have studied the interfacing signals, timing diagrams and intend to use the 8051 microcontroller.

Could amyone please provide us some assistance about how to get started.

thank u
venu

[ScottieB]

Venu,

Interesting project. If you have not yet seen the IEEE-488.1 project, that would probably be useful. National Instruments sells some ASICs that could help you if you're allowed to use them. As long as the GPIB interface doesn't need to be a "controller" interface (where it addresses the bus and drives the ATN line), you could use the TNT4882 chip for your GPIB side. There is even an application note for doing this with an 8051: http://zone.ni.com/devzone/conceptd.nsf/webmain/96D2F7612B87FFC9862568040068202C

The general reference manual for the TNT chip is also linked from that page.

Hope this helps.

Scott B.
Applications Engineer
National Instruments