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Microcontroller › 8051 › null connection
i use usb to db9 cable for p89v51rd2 program loader
BF-810 cable i use.
it is require for null connection of pin of db9 pin. how to null?
thanks…
you connect db9 connector as pin2 as receiver , pin3 as transmitteer & pin5 as gnd. this is null modem connection
Hi,
All you have to use is three pins,
2–>RX
3–>TX
5–>GND
Now use any application like hyperterminal, cutecome etc. to set the serial port baud rate and other properties