If the connection is established, ‘ OK’ is received. In order to check the connection, we can send the ‘Attention command’ ‘ AT’. Every command sent to the module has to end with i.e., CR=Carriage return and LF=Line Feed characters whose ASCII values are 13 and 10 respectively. In the C-compilers temp=‘0’ instruction will store the ASCII value of zero (=48) in the variable temp. All the command characters are viewed as ASCII characters. Below is the simulation video showing the responses after Power ON.Īfter the response ‘call ready’ is received, the module is ready to use. The module sends some data related to the ready state of the module. To check whether the connection is established or not, run the simulation and then Power ON the module. The details regarding the port number to which the Serial converter is connected are obtained from the control panel under the Devices and Printers tab. Properties of Comport and Virtual Terminal All these parameters should be set in the Comport and the Virtual terminal in their edit properties menu. The data is of 8-Bit mode with one stop bit and no parity. If there is any malfunctioning with respect to the data received, then next probable baud rate would be 38400. By default, the modules operate at 9600 Baud rate. Next, we have to configure the COMPORT in the Proteus software. The virtual terminal in the Instruments tab is used to view the data which is transmitted and received through the selected serial port.
The component ‘COMPIM’ Comport Physical Interface Model is used to connect the proteus circuit with the serial port of the computer.
Circuit Diagram – GSM and Serial converter If the serial port is not available on your computer, then a USB-Serial converter can be used. The Proteus software has the option to connect with the com ports of the computer.
The GSM modules have the option to connect to the serial port of a computer through DB-9 Connector or it can be interfaced to a microcontroller using the TTL-UART feature. Connecting the Module to Proteus Environment This article explains how to connect a GSM Module to the Proteus software and understand various commands related to the GSM module and perform some operations like sending an SMS, reading an SMS, making phone calls and so on. The system can be standardized by comparing the performance of various components, like, for example a suitable microcontroller. By using this simulation feature the designer can develop the systems within the software and test all the features of the system that is under design without using any hardware components. The Proteus simulation software can be used to interface real-time modules like the GSM Module.
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