I need to edit the smskannel.conf file but I don't know the following things.
The below are configurations for Huawei modem I need it for Simado gdt11 gsm modem.
SMSC MODEM GSM
Related
I've got my sim900 module working with arduino by using their software serial library, however, I want to eliminate arduino from the equation and have serial communication directly to sim900 module.
I'm using putty as my terminal emulator. It's serial is configured to COM1 19200 8 N 1 the same as device manager configuration for this port.
I connect straight from hardware serial on my PCs motherboard into serial-to-ttl interface board which connects to sim900 module. The board has 4 pins - VCC GND TX RX. They're all connected to my sim900 hardware serial as follows: VCC=5V GND=GND TX=TX RX=RX (Yes I know that it's always actually TX=RX and RX=TX, but when I connect it that way my interface board doesn't blink any led to indicate a transfer whereas it does when I connect TX=TX and RX=RX). The switch on the module is set to hardware serial pins as well.
So the only thing that happens when I send AT commands such as AT or ATI and press enter is that puttys cursor comes back to the beginning of command that I typed. No response.
I'm thinking that I'm not doing something that the arduinos software serial port is doing when it sends commands to sim900.
Can anyone help please ? It's literally been days of trying different configurations with no results.
In that time besides getting sim900 working with arduino software serial I verified that the hardware serial port on my motherboard is working correctly and the interface board is working correctly as well.
I'm using the atmega328p and I would like to send data through the USB to use like the serial monitor in the arduino for code testing purposes, so I doesn't need an LCD to print data. I used USART when simulating my code in proteus, and I believe there is a similar approach using the data pins of the USB connector.
When you send data over the UART on the ATmega328, it is converted to serial over USB by the Arduino. The Arduino will enumerate as a virtual serial port on your computer, and you can connect to this with the serial terminal of your choice (screen, PuTTY, RealTerm, etc). The Arduino IDE also has an built-in serial monitor. Note that you cannot use this serial connection while programming the Arduino via the USB port, as it will interfere with the programming.
If you are using the hardware UART for other purposes, then you can use an external TTL serial-USB converter and SoftwareSerial on the Arduino.
I need some guidance for making LED ON-OFF using Arduino Uno and GSM SIM900 with the help of internet data. Also how to setup free hosting server so that I can communicate my arduino with android app.
Step 1: set GPRS Commands(ie APN) of SIM900
Step 2: set tcp ip connection to your static server and port number(AT command is given in manual. static IP is must)
step 3: When TCP/IP connection gets ready, send command from server(use Hercules software) to your device to on/off led.
step 4: read server's command from your arduino and make led on/off.
I hope it help.
The company I am working for has it's own ARM embedded device and currently I am starting a project with it to communicate with a dial-up modem. The modem and the device are to be connected via serial TXD and RXD ports.
My question is, how do I go about troubleshooting communications between the ARM device and the modem? For instance, before even starting with the ARM device, I connected the modem to a laptop via TTL USB connector and sent commands to the modem using Putty. I know how to use the ARM device software to send commands to the modem, however there is no screen on the ARM device so there is no way for me to know for 100% certainty if a command was sent to the modem or not. I guess what I am really asking, is there a way to use a laptop just as a "window" or "viewer" to monitor communications between the modem and the ARM device?
If GSM modem has to be used to send SMS, then what are the hardware and software requirements to setup the entire thing?
You need a GSM modem (mobile handset or similar) attached to the server.
Typically, SMS can be sent by using AT commands on the serial interface of the GSM hardware.
See this tutorial for an example.
This library offers a simple interface to send SMSs though a Gsm Modem