Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

What to consider for modem to 8051 connection ?

Status
Not open for further replies.
R

ricpax

Newbie level 3
Joined
Jan 3, 2005
Messages
4
Helped
1
Reputation
2
Reaction score
0
Trophy points
1,281
Activity points
46
modem to 8051 connection

hi! my question is what are the things we have to consider in order to achieve a connection b/w a remote pc(using hyperterminal) to a 8051 (connected to a external modem) via telephone line..

connection goes this way:

pc(hyperterminal)<--->modem<--->telepone line<--->modem<--->8051

thanks!!
 

Re: modem to 8051 connection

you have to consider a lot of things, you should use rs232 (max232)
also read about haye's AT commands and rs232 interfaces
 

    R

    ricpax

    Points: 2
    Helpful Answer Positive Rating
Re: modem to 8051 connection

There is one of today's topics on: modem's AT commands and 8051.
It is alost the same issue as yours.
Have a look...
 

modem to 8051 connection

use serial port interfaced modem and intrface cpu with it through AT commands,it is simple and works!...
 

Re: modem to 8051 connection

If you using just Rx and Tx dont forget to set NO FLOW CONTROL on modem on mcu side.


Mr.Cube
 

Re: modem to 8051 connection

in relation to my first querie..

we tried to test it first by connecting the µcontroller directly to the serial port of the PC(without using modem and telephone lines)it actually works..

then,we tried to connect two pc(hyperterminal)both have modems, using the telephone line inorder for us to test the connectivity of both modems..connecting pc to pc was quite easy. But since our project requires communication b/w pc and microcontroller,we find it very hard for the pc and the µcontroller to achieve handshaking,because we could not make the µcontroller to answer the call..what should we consider first in order to handshake?
 

modem to 8051 connection

since the project of ricpax and mine is almost the same, just like to ask if i burn the command -->print "ATA"
in the 8051 will the microcontroller answer the modem? im using 3 wire connection only the RX, TX and Grnd
please help...
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top