/* Find an attached dongle device and return the COM port name via the output
* parameter tty. tty is a user-supplied buffer of size len. Return the COM
* port number, if anyone cares. On error, return -1. */
int Mobot_dongleGetTTY (char *tty, size_t len) {
/* Get all USB devices that provide a serial or parallel port interface. */
HDEVINFO devices = SetupDiGetClassDevs(
&GUID_DEVCLASS_PORTS,
"USB",
NULL,
DIGCF_PRESENT);
if (INVALID_HANDLE_VALUE == devices) {
win32_error(_T("SetupDiGetClassDevs"), GetLastError());
exit(1);
}
/* Now iterate over each device in the COM port interface class. */
SP_DEVINFO_DATA dev;
dev.cbSize = sizeof(SP_DEVINFO_DATA);
DWORD i = 0;
BOOL b = SetupDiEnumDeviceInfo(devices, i, &dev);
int ret = -1;
while (b) {
if (isDongle(devices, &dev)) {
ret = getCOMPort(devices, &dev, tty, len);
if (-1 == ret) {
fprintf(stderr, "Found dongle, but could not get COM port\n");
exit(1);
}
/* Found the dongle. */
break;
}
/* And get the next device. */
dev.cbSize = sizeof(SP_DEVINFO_DATA);
b = SetupDiEnumDeviceInfo(devices, ++i, &dev);
}
DWORD err = GetLastError();
if (ERROR_SUCCESS != err && ERROR_NO_MORE_ITEMS != err) {
win32_error(_T("SetupDiEnumDeviceInfo"), GetLastError());
exit(1);
}
/* Done with our COM port devices. */
if (!SetupDiDestroyDeviceInfoList(devices)) {
win32_error(_T("SetupDiDestroyDeviceInfoList"), GetLastError());
exit(1);
}
return ret;
}
bool isAithonCDCBootloader()
{
return _portName == getCOMPort(true);
}
bool isAithonCDC()
{
return _portName == getCOMPort(false) || _portName == getCOMPort(true);
}