USB device standard requests decoding module

Macros
#define	ADDRESSED   3
#define	ATTACHED   0
#define	CONFIGURED   4
#define	DEFAULT   2
#define	Is_device_enumerated()   (usb_configuration_nb != 0)
	Returns true when device connected and correctly enumerated with a host. More...
#define	POWERED   1
#define	SUSPENDED   5
#define	USB_CONFIG_ATTRIBUTES_RESERVED   0x80
#define	USB_CONFIG_BUSPOWERED   (USB_CONFIG_ATTRIBUTES_RESERVED | 0x00)
#define	USB_CONFIG_REMOTEWAKEUP   (USB_CONFIG_ATTRIBUTES_RESERVED | 0x20)
#define	USB_CONFIG_SELFPOWERED   (USB_CONFIG_ATTRIBUTES_RESERVED | 0x40)

Functions
void	usb_process_request (void)
	This function reads the SETUP request sent to the default control endpoint and calls the appropriate function. More...

Variables
volatile U8	usb_configuration_nb

#define ADDRESSED   3

#define ATTACHED   0

#define CONFIGURED   4

#define DEFAULT   2

#define Is_device_enumerated

(

)

(usb_configuration_nb != 0)

Returns true when device connected and correctly enumerated with a host.

The device high-level application should test this before performing any applicative request.

Referenced by device_template_task().

#define POWERED   1

#define SUSPENDED   5

#define USB_CONFIG_ATTRIBUTES_RESERVED   0x80

#define USB_CONFIG_BUSPOWERED   (USB_CONFIG_ATTRIBUTES_RESERVED | 0x00)

#define USB_CONFIG_REMOTEWAKEUP   (USB_CONFIG_ATTRIBUTES_RESERVED | 0x20)

#define USB_CONFIG_SELFPOWERED   (USB_CONFIG_ATTRIBUTES_RESERVED | 0x40)

void usb_process_request

(

void

)

This function reads the SETUP request sent to the default control endpoint and calls the appropriate function.

When exiting of the usb_read_request function, the device is ready to manage the next request.

If the received request is not supported or a non-standard USB request, the function will call the custom decoding function in usb_specific_request module.

Note

List of supported requests: GET_DESCRIPTOR GET_CONFIGURATION SET_ADDRESS SET_CONFIGURATION CLEAR_FEATURE SET_FEATURE GET_STATUS

< unsupported request => call to user read request

References bmRequestType, CLEAR_FEATURE, EP_CONTROL, GET_CONFIGURATION, GET_DESCRIPTOR, GET_INTERFACE, GET_STATUS, SET_ADDRESS, SET_CONFIGURATION, SET_DESCRIPTOR, SET_FEATURE, SET_INTERFACE, SYNCH_FRAME, Usb_ack_setup_received_free, usb_clear_feature(), Usb_enable_stall_handshake, usb_get_configuration(), usb_get_descriptor(), usb_get_interface(), usb_get_status(), Usb_read_endpoint_data, Usb_reset_endpoint_fifo_access, usb_set_address(), usb_set_configuration(), usb_set_feature(), usb_set_interface(), and usb_user_read_request().

Referenced by usb_device_task().

volatile U8 usb_configuration_nb

Referenced by usb_device_task(), usb_device_task_init(), usb_general_interrupt(), usb_get_configuration(), usb_set_configuration(), and usb_set_interface().