Serial RS232 Port Debugger Utility 
The RS232 Serial Port Debug Utility allows you to read and write commands to any device. It is very similar to Hyper Terminal but it was specially designed to communicate to devices that provide non-stop data streaming. For example if you will try to configure GPS with Hyper Terminal you will not have any luck because GPS send your coordinates every 2ms and you basically can not type in the command that fast; in order to solve this problem we developed Comm Port Debugger. With our application you can send the command to the port at any time regardless incoming data.

  Download Comm Port Debugger

Software is free for non commercial use only. If you wish to use it for business purposes please contact us to get permission. Comm Debugger comes as is, without any warranties.

Usage Instruction
1. After application is loaded select port name from dropdown menu (listed port names are the ports that are installed on your system) then type in appropriate baud rate and click Open Port button. If Open Port button get grey this means that port is open and ready to work.



2. After the port is open, make sure that we have selected to automatically read all the data that is coming from the port. You can chose to read data manually but then you will need to press button exactly when the buffer is filled with incoming data.

 

3. Now if we assume that we are connected to the modem, we can try to send the command to the modem and see if we get any response. We will use ATD command. AT is the command that initiate communication to the modem, and D that follow right after tells modem to start dialing the number. Ex: ATD2120000000 will dial 212-000-0000.



4. Once you hit the send button the app will send command to the modem. In our case that was a cell phone and we got notification that sme one is attempting to dial the number.



5. At the same time our application reads the buffer from serial port and outputs it on the screen. In situation with cell phone we didn't tell it to connect to GSM so we got response saying that we don't have any carrier available; despite that we can see that application can write data to serial port and read responses from the port. 



There are many features we can add to this software such as remote TCP/IP connection to local hardware ports. We can add preset commands for different devices. Maybe port imitation etc. If you need any custom functions please let us know. To contact us please use our support page.