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.
I will be using the TX pin of GSM modem and giving it to the RX pin of computer and the RX pin of GSM modem will be given to TX pin of controller. And i will short the GND pin(i.e pin 5) of all the three DB9.I think it will be possible to see the response.
will it work?????
sir i tried sending commands without flow control also still didnt worked.:-(:-(
sir here is my program which i have burned in 8051. please look into it and suggest me if there is any problem in code.
#include <reg51.h>
unsigned char *command_AT = "AT\r\n";
unsigned char *command_CMGF =...
Thank you sir for the suggetion. i am doing the same connection which you suggested.:-):-)
i just had few queries. why is flow control to be kept on none??????
is it necessary to give an initial command ATV0 (This parameter setting determines the contents of the header and trailer transmitted...
Iam facing a problem. i have programed 8051 to send the commands to GSM modem to send SMS. I have connected the TX pin of 8051 board to RX pin of modem & the RX pin of 8051 board to TX pin.also i have short the GND pins.But there is no response. the controller is sending the instructions...
i solved the problem of hyperterminal and cntrl+Z. i changed the hyperterminal which i was using. I used puTTY a terminal software and by using it i could send the SMS from modem. actually the previous hyperterminal was not having all the facilities like(cntrl+Z).
but now Iam facing new problem...
Iam facing new problem. i have programed 8051 to send the commands to GSM modem to send SMS. I have connected the TX pin of 8051 board to RX pin of modem & the RX pin of 8051 board to TX pin.also i have short the GND pins.But there is no response. the controller is sending the instructions...
i solved the problem of hyperterminal and cntrl+Z. i changed the hyperterminal which i was using. I used puTTY a terminal software and by using it i could send the SMS from modem. actually the previous hyperterminal was not having all the facilities like(cntrl+Z).
but now Iam facing new problem...
yes sir i have set all the parameters properly. the only problem is in sending message and that too at cntrl+Z command. I even tried to send commands making the echo off.
but still it doesnot work properly. as i give the cntrl+Z command the data in terminal is erased a bit lyk the UNDO operation...
hello friends, I am facing problem in sending message from SIM 300 GSM modem. i have connected it to my PC using serial cable. I am sending following commands to modem
1.AT // response of modem was OK
2.AT+CMGF=1 // response of modem was OK
3.AT+CMGS="+919028198563"...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
