I understand you're looking to create a feature for downloading drivers for the device (likely a USB to CAN bus converter from ICP DAS) and possibly integrating ICP (Industrial Control Protocol or something similar) with it.
if (dev_handle == NULL) { fprintf(stderr, "I-7561 not found\n"); return -1; } icp con i-7561 driver download
#include <libusb-1.0/libusb.h> #define I7561_VID 0x1234 // Replace with actual VID #define I7561_PID 0x5678 // Replace with actual PID I understand you're looking to create a feature