examples/testlibusb: Print speed of devices

Print the speed of devices to exercise libusb_get_device_speed().

Signed-off-by: Hans de Goede <hdegoede@redhat.com>

diff --git a/examples/testlibusb.c b/examples/testlibusb.c
index f9e095a..52bf501 100755 (executable)
--- a/examples/testlibusb.c
+++ b/examples/testlibusb.c
@@ -164,18 +164,28 @@ static void print_device(libusb_device *dev, libusb_device_handle *handle)
 {
        struct libusb_device_descriptor desc;
        unsigned char string[256];
+       const char *speed;
        int ret;
        uint8_t i;
 
+       switch (libusb_get_device_speed(dev)) {
+       case LIBUSB_SPEED_LOW:          speed = "1.5M"; break;
+       case LIBUSB_SPEED_FULL:         speed = "12M"; break;
+       case LIBUSB_SPEED_HIGH:         speed = "480M"; break;
+       case LIBUSB_SPEED_SUPER:        speed = "5G"; break;
+       case LIBUSB_SPEED_SUPER_PLUS:   speed = "10G"; break;
+       default:                        speed = "Unknown";
+       }
+
        ret = libusb_get_device_descriptor(dev, &desc);
        if (ret < 0) {
                fprintf(stderr, "failed to get device descriptor");
                return;
        }
 
-       printf("Dev (bus %u, device %u): %04X - %04X\n",
+       printf("Dev (bus %u, device %u): %04X - %04X speed: %s\n",
               libusb_get_bus_number(dev), libusb_get_device_address(dev),
-              desc.idVendor, desc.idProduct);
+              desc.idVendor, desc.idProduct, speed);
 
        if (!handle)
                libusb_open(dev, &handle);