Python Serial Port Example Windows Batch
The ever increasing USB COM port numbers is either a blessing or an irritation depending on how you look at it. If the device does not have a serial number or all devices have the same serial number, then they'll all have the same COM port number, unless more than one of them is plugged in at the same time, in which case it will be random.It's interesting. Some of our tests involve swapping the devices to different USB ports on the computer. Some devices, new COM ports are created when I swap to a different USB port, and other devices, they keep the same COM port number when I swap.What's funny is that I've got some USB GPS units which are made by Pharos but which are microsoft-branded. We've got both sets here: The original Pharos units as well as the Microsoft-rebranded ones.
Python Serial Port Example Windows Batch File
The MS ones have a slightly different USB ID and run on different drivers, but the hardware is identical, right down to every detail on the packaging and labeling. They both use a Prolific chipset for USB-to-serial conversion. The Microsoft ones are the ones that stay the same but the Pharos ones make a new COM port when I swap.
Batch File Serial Port Communication
We can use any one of them for serial communication but sometimes we require to create own custom serial application for communication. In windows, it is easy to create the custom serial application using the win32 API.You can also see the below articles that how to change the properties of com port like baud rate, parity using the windows API.Finding COM port Number of a DeviceIn windows, the serial device will display in com port section of device manager with name as COM1, COM2, COM3, COM4. Generally, COM1 and COM2 refer to the hardware serial ports present in the PC and another com port number is export when any serial device or USB to serial device attached with PC. It also possible that com id could be virtual ( for example static virtual com port).In my laptop, I have attached an Arduino board (Atmega 2560) and its COM id would be shown in com port section (Control Panel Device Manager Ports).Compilers and IDE’s usedHere I have used Visual Studio 2013. You can also use MinGW (Minimalist GNU for Windows) an Open Source programming tool. Here I am assuming that you know how to create the console application using the visual studio and familiar with win32 API.