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63 Threads found on edaboard.com: Gsm Serial Communication
Did you mean PIC and/or PLC? A mixture of lowecase and uppercase characters may lead in a misleading. Anyway, for both cases, considering that most gsm module interfaces are serial, I do not really see any issue there.
Hello, Trying to interface M590 with Arduino Uno. Example sketches did not work. Then I connected gsm to my laptop via USB to serial FTDI module. Using arduino serial monitor, communication with gsm Module seems alright as all AT commands responded by M590 module is correct. But M590 module does not (...)
I am using Atmega 32 Application needs 2 Rx lines. In fact using gsm modem and GPS module. It needs communication with both, but I need one at a time only. gsm needs both Rx and Tx, : so giving the serial port to this. One more Rx is needed for GPS module. I wish to use 74LS257 multiplexer to select one of the two (...)
dear aman if you are beginner then you directly moving gsm is not good idea. do on serial communication and other things then you move on. Please try something and ask help. here everybody are there to guide you not to provide ready made stuff
I have made the following circuit using atmega162. Here, when RFID reader detects a tag,the data is sent from the reader to the MCU via usart 0,in interrupt mode. Then this data is sent to server using gsm serially. gsm is connected to UART 1. Afterwards, server transmits a data via gsm to MCU for taking further action.For (...)
Hello, I am totally new for VB. Can anyone please guide me on the code for VB for serial communication and gsm interfacing.
Hi, currently i am working on the cdma module. I am very new to this module. I need to send a data from cdma module to server using TCP. For eg: I have to use the below procedure for that particular command (I have to Check what software revision is being used: 1. Send command AT+GMR 2. Wait for response OK 3. Ensure you have a value
hello sir, i need program (embedded C) for my project 'sms based notice board '. i am using at89s52 uC and sim 900 for gsm module, sir here i am not using any serial communication ic coz there is inbuilt max 232 in sim 900...... i have completed my circuit as well as pcb designing, can you give me full coding for this project..... (...)
I am working on Sim300, trying to receive sms on atmega16 via serial communication. When i send " *23# " sms to gsm modem from my mobile, gsm sends " \r\n+CMGR:\s"REC\sUNREAD","+919762148043",,"14/03/13,23:04:32+22"\r\n*23#\r\n\r\nOK\r\n " as response on serial port. I am getting this data on (...)
Hi all.. I am trying to establish communication between 2 gsm modems.. and i am done with it using Hyperterminal and labview support.. now i am trying to make the same communication using arduino coding by giving AT commands through serial input (instead of Hyperterminal).. but the problem is to send a data we need to give (...)
Hi Elias, The gsm - SIM900A module on default comes with 115200,8,N,1,NONE baud rate. Try in this baud rate..
hi I am to write about serial communication using mcu and gsm modem to send sms to mobile. but i face some problem. can anyone give suggestion? did i need to set sbuf ??? I am wirting AT command using c language. while(1){ if (ir_out==0){ SBUF = "A"; waitTx(); SBUF = "T"; waitTx(); }
hi friends.. i m using gsm modem (sim900) and its not taking my commands i entered through the hyperterminal.. how to test wheather my gsm modem is working correctly.???? i think there is no problem with my serial communication.. bcz i also done loopback testing..its working correctly...also my gsm (...)
Hi, First of all, don't use Hyper Terminal in PC for gsm module testing because Hyper Terminal don't display Hexadecimal value like '\r' = 0x0D, \n = 0x0A which is extremely use in gsm communication. Use other serial communication application like Hercules from HW group. Regards,
Hi friend, I have seen your whole code, in your main loop you first init gsm and then serial communication. How it is possible that gsm AT command work without serial communication initialize, So, first init serial communication then send AT (...)
hello I am doing my final project study that focuses on the control of a remote PLC with gsm First I connected the phone to my PIC ds PIC30F4013 with serial communication using UART I realized the code but it did not work I need your help please it is urgent that is the code with micro C pro for ds PIC: [//**** Declaration des (...)
Hi, I am trying to make an intelligent traffic light controllorvusing fpga with gprs which gives priority to emergency vehichles. I am using xc3s400 . And there is no serial comm port on the kit to interface eith gsm (sim 300) .can some one help on how to program fpga for serial comm and also how to interface uart with fpga
Perhaps you need to explain. You have a sim900 gsm module. That one has what looks like DB9 RS232-type serial connector to interface with a PC. To get any of these to work, you normally need a SIM card and arrangement with a mobile network operator. So - if you have a working interface to your PC, you would be able to say that you actually g
hi I am working on project for interfacing gsm modem with pic.for sending the at commands i used routine for transmission through uart. write_string("AT\r\n") for this I wrote the fun as- void write_string(unsigned char *str) { while(*str!='\0') { TXSTAbits.TXEN=1; TXREG=*str; while(!TXSTA
Hi..I am doing my final year project on 'Home automation using gsm modem'.I am using pic18F4520 and gsm modem (wavecom q2403 model).When I connect modem with laptop(using hyperterminal),the modem is responding.When I interface pic with pc,serial communication is working fine.But when I connect pic with gsm (...)
how to connect gsm Modem with any microcontroller ? plz help me.
Hi all,I just need help here, I have attached diagram it explain everything, I am working on my Final year project and my project based on vehicle tracking system, so am going to use GPS and gsm connected to RS 232 both, but I cant use two RS 232 I have to use one but am not sure how am going to do it, or any idea I will be appreciate..... also som
if you want to send the data serially to some cell phone using gsm modem. then you need the microcontroller USART. (Tx,Rx pins) you can connect the gsm modem directly to microcontroller through db-9 (rs-232)protocol via max-232 ic.
Hi I need an help,that how to interface gsm(sim 300), with pic 16f877a.I have source code but i need an idea in hardware part. you can connect gsm modem with pic16f877 by using serial communication (rs-232) protocol. you need to convert TTL to pc-level voltage for that purpose you need max-232 le
i don't think this code will work for wavecom gsm modem this at command is for cellular shield ? pls reply
AT Comands are sent through serial UART, so u have to learn the AT comands < The mObile or gsm, module would be connected through Rx Tx and u have to send ur comands as u would send any string from the Microcontroller, For example if you send the AT comand AT+CMGR=1\r in most of modules to read the message that is stored at location 1; so u ca
Hi Folks .. !! I am using a Freescale controller along with the "Q2686 Wavecom GPRS" module for uploading the data to the webserver using the serial communication protocol . I couldn't find out the relevant AT commands for the gsm modem specified above . Can anyone help me in finding the AT commands for the above modem ???
Hi, im trying to serially interface sim548c module with microcontroller 89c52. i have successfully sent AT commands via TX of microcontroller to RX of gsm part of sim 548c module. As soon as the commands are sent, i want to immediately start receiving the replies from the gsm part via RX of microcontroller. The replies are stored in a char (...)
Hai, You can use pic microcontroller (like pic gsm first you study about AT commands and in GPS study NME sentence.
gsm module: sim300cz/sim900 is good.
hi friends.. i m using gsm modem and its not taking my commands i entered through the hyperterminal..how to test wheather my gsm modem is working correctly.?..i think there is no problem with my serial communication..bcz i also done loopback testing..its working correctly...also my gsm (...)
hello everyone i am using atmega8535 controller, iuse this in serial communication with gsm modem and working fine. but do not know in tx mode how many bits modem send and our controllers how many bits can receive maximum in single time .a and also about gsm modem and its rx bits ,how many bits it send in a time. i (...)
Preferably use a PIC with more serial interfaces. Otherwise, use any available "poor man's" methods to work with existing PIC: - slow software UART - sequential usage of the hardware UART through external multiplexer In case of the MODBUS communication, do you necessarily need two separate bus segments? I guess, the gsm (...)
gsm and GPS are based on serial communication through UART. memory chips are usually supported by I2C protocol.. what explanation you need....
The tutorial is pretty clear. The gsm modules usually are using serial communication. What PIC do you want to use? Have you find a gsm module? What language do you want to use??
This C code for gsm using PIC. This reference for you to convert into your microcontroller.
Sensor<--->Datalogger<--RS232-->GPRS/gsm Modem<--->Computer Where's the wireless connection in this chain?
Hi everybody!! I'm using the PIC 18F4550 to establish communication between a gsm module and a PC. The USB communication works perfectly, however I can't get the serial communication to work. I'm using a 8MHz cristal. I can't send data through the Tx pin but I can't get any data back. I noticed that an (...)
DEAR FRIENDS, i want to establish communication between PIC and PC , then with PIC to gsm module , i'm working with PIC16F887. In PIC 16F887 there is an USART that we can use to establish serial communication , but the question is , can use just this controller for two (...)
the question is, is it use a rs/max232? and how to control the gsm so that it can receive the prepaid number. you need to use serial communication to intrface gsm and you need Max232 for the same
Most of the gsm about 95% support serial communication interface using DB9 connector and serial cable along with MAX232.......
Which gsm u r using?? All the gsm has the serial communication facility.. Like UART how u r transferring data into Hyper Terminal.... Same Way Here also through serial u can Send the gsm command.... I have tried too it was working perfectly fine....
Interface both of them using a Max 232 Ic on both ends. Modem uses serial communication. Modem has Max232 Ic. make sure your controller also has MAx232. connect Tx to rx and Rx to Tx and pin 5 common ground. USe AT commands to communicate controller and gsm modem. There are many many old threads that address this issue. please search in (...)
I agree with ckShivaram, using a gsm module is better than a cell phone since the gsm module are quite small and, can be integrated in a small casing in your final product. Check this it might help. gsm Module, China gsm Module, gsm Module Manufacturers, China gsm
Maybye wrong bps speed ? Tell us the name of the gsm modem
You can use GPS and controller using serial communication. For sending message you can you any gsm modem. For car sensors you can use proximity sensors to detect / simulate lane change, you get petrol / gas sensors, Ultrasonic sensor to detect vehicles ahead or rear end. Programming in C is best option.
Hi I'm doing a GPS/gsm Vehicle Tracking System for my final year project. I had decided to use EM-406A Gps module to obtain my coordinates by interfacing it to a microcontroller but I'm having problems understanding how I can actually tackle this and hoping to get some help from you guys or if you could suggest a similar module that I can use.
Hi, I am working with a iTegno 3800 gsm modem and I require to wake the PIC out of sleep mode and retrieve the data in the SMS whenever I receive it. The programming language i am using is C. What are the possible ways I could do this? I was thinking of EUSART Receive Interrupt bits but I am not sure on how to implement this. Thanks Won
Sir, It is easy you can connect the modem by max232 serial ic. controller-max232-gsm I think you know about basic circuit of max232 For communication use AT commands
Hi... I am working on interfacing microcontroller with gsm Modem... but i am unable to send and receive message from MOdem with the help of microcontroller... Can anyone suggest tutorials or some programming methodology or any links that guides me to complete the project... Any suggestions would be appreciable... Compiler:MikroC Mode