I have been trying unsuccessfully for some time to figure out how to read the analog axes and digital buttons on one or more USB joysticks connected to a computer with an open source programming language like C compiled by gcc. I have no idea what library needs to be added, if any. I also have no idea what the function call names or parameters are. I have tried Googling USB Joystick, but mostly what I find is how to convert an older game console into a USB device. Can someone point me to required libraries, header files with function calls, or better yet sample code? Or is there a different listserver that has people that can more easily answer questions like this?<br>

<br><br>     I am trying to write a program to send serial command data to a microcontroller to operate an underwater ROV using the joysticks to control movement and manipulator arms, and buttons to control lights, secondary cameras, ballast tanks, etc. But without a way to read human input, I don&#39;t have any data to convert into motor commands to control the movement of the ROV.<br>

<br>Mike<br>