Thought about that....but not too keen on the extra overhead associated with that as it'd be done from Java (don't ask; this is not a PIC related project). -marc On 24/7/03 12:09, "Chris Loiacono" wrote: > You might also toggle a separate pin dedicated to drive an LED each time a > TX (or RX) is completed (if you have available time in the rest of the ap.) > No extra hardware, low risk. > > c > > Seems like a nice simple approach...thanks :-) > > > -marc > On 23/7/03 21:29, "Ken Pergola" wrote: > >> Hi Marc, >> >> You could use something like 74xx04 glue logic inverters if you are > worried >> about loading the bus. >> Connect LED (with series resistor) from Vcc to output of logic inverter. > Be >> mindful and don't violate the sink current spec of the device. >> >> If you want to choose how the LED lights up (logic low on inverter's input >> or logic high on inverter's input) you can connect two inverters in series >> and choose where you want to connect the LED -- on the output of the first >> inverter or on the output of the second inverter. >> >> >> I'd like to be able to add some activity LEDs to some SPI bus stuff I've > got >> going on a breadboard. I'm sure someone here has a good idea how to do > this, >> or a schematic, or horror stories...hence asking before I start :-) >> >> Any clues? > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body > -------------------------------------------------- Marc Nicholas Geekythings Inc. C/416.543.4896 UNIX, Database, Security and Networking Consulting -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body