Get the device descriptor for a specific device
#include <sys/usbdi.h> usbd_device_descriptor_t *usbd_device_descriptor( struct usbd_device *device, struct usbd_desc_node **node );
libusbdi
The usbd_device_descriptor() function lets you obtain the device descriptor for a specific device.
The node parameter tells you where a descriptor was found to root future requests from (e.g. configurations of the device).
The usbd_device_descriptor_t structure looks like this:
typedef struct usbd_device_descriptor { uint8_t bLength; uint8_t bDescriptorType; uint16_t bcdUSB; uint8_t bDeviceClass; uint8_t bDeviceSubClass; uint8_t bDeviceProtocol; uint8_t bMaxPacketSize0; uint16_t idVendor; uint16_t idProduct; uint16_t bcdDevice; uint8_t iManufacturer; uint8_t iProduct; uint8_t iSerialNumber; uint8_t bNumConfigurations; } usbd_device_descriptor_t;
A pointer to usbd_device_descriptor_t on success, or NULL on error.
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | No |
Signal handler | No |
Thread | Yes |
usbd_args_lookup(), usbd_configuration_descriptor(), usbd_device_lookup(), usbd_device_extra(), usbd_endpoint_descriptor(), usbd_hcd_info(), usbd_hub_descriptor(), usbd_interface_descriptor(), usbd_languages_descriptor(), usbd_parse_descriptors(), usbd_string(), usbd_urb_status()