Hi All.!

A little bit of-topic what aboute 8051.! -But, does
anybody have a logical description for EIA232 standard, include
DSR, DTR, RTS, CTS.
I'm just start to redraw a pcb for my UHF-radioapplication,
and I must perform a fully RS232-connection.

I have a data-cellular phone module with a full RS232 connection,
(all 9-pins), and the Atmel 8953-processor, and also connected
to the uP - the uhf-transceiver. (All on same mother-board).

So, I have to get knowledge aboute all pins in EIA232-DCE
standard include timing waveforms, why and how.!

It's no problems to solve, if I want to occupied all ports on uP,
but I'm trying to find a better way. I need the ports for other use.

/This project are ment to collect data from local environment by radio,
using small 'measuring-nodes' up to aboute 50-60 units, polling by
something named 'concentrator' with the master-uhf-transceiver
and a phone-modem to transfer collected data to some sort of central./

Magnus._.