This file manages the USB task either device/host or both. More...

Macros
USB Events
#define	Usb_send_event(x) (g_usb_event \|= (1<<x))
	Send event.

#define	Usb_ack_event(x) (g_usb_event &= ~(1<<x))
	Ack event processed.

#define	Usb_clear_all_event() (g_usb_event = 0)
	Clear all events.

#define	Is_usb_event(x) ((g_usb_event & (1<<x)) ? TRUE : FALSE)
	Check for USB event.

#define	Is_not_usb_event(x) ((g_usb_event & (1<<x)) ? FALSE: TRUE)
	Check for USB event NOT occuring.

#define	Is_usb_device() (g_usb_mode==USB_MODE_DEVICE ? TRUE : FALSE)
	Check if USB is device.

#define	EVT_USB_POWERED 1
	USB Event: USB plugged.

#define	EVT_USB_UNPOWERED 2
	USB Event: USB un-plugged.

#define	EVT_USB_DEVICE_FUNCTION 3
	USB Event: USB in device.

#define	EVT_USB_HOST_FUNCTION 4
	USB Event: USB in host.

#define	EVT_USB_SUSPEND 5
	USB Event: USB suspend.

#define	EVT_USB_WAKE_UP 6
	USB Event: USB wake up.

#define	EVT_USB_RESUME 7
	USB Event: USB resume.

#define	EVT_USB_RESET 8
	USB Event: USB reset.

#define	EVT_USB_SETUP_RX 9
	USB Event: USB setup received.

Standard requests defines
#define	GET_STATUS 0x00

#define	GET_DEVICE 0x01

#define	CLEAR_FEATURE 0x01
	see FEATURES below

#define	GET_STRING 0x03

#define	SET_FEATURE 0x03
	see FEATURES below

#define	SET_ADDRESS 0x05

#define	GET_DESCRIPTOR 0x06

#define	SET_DESCRIPTOR 0x07

#define	GET_CONFIGURATION 0x08

#define	SET_CONFIGURATION 0x09

#define	GET_INTERFACE 0x0A

#define	SET_INTERFACE 0x0B

#define	SYNCH_FRAME 0x0C

#define	GET_DEVICE_DESCRIPTOR 1

#define	GET_CONFIGURATION_DESCRIPTOR 4

#define	REQUEST_DEVICE_STATUS 0x80

#define	REQUEST_INTERFACE_STATUS 0x81

#define	REQUEST_ENDPOINT_STATUS 0x82

#define	ZERO_TYPE 0x00

#define	INTERFACE_TYPE 0x01

#define	ENDPOINT_TYPE 0x02

#define	DEVICE_DESCRIPTOR 0x01

#define	CONFIGURATION_DESCRIPTOR 0x02

#define	STRING_DESCRIPTOR 0x03

#define	INTERFACE_DESCRIPTOR 0x04

#define	ENDPOINT_DESCRIPTOR 0x05

#define	DEVICE_QUALIFIER_DESCRIPTOR 0x06

#define	OTHER_SPEED_CONFIGURATION_DESCRIPTOR 0x07

#define	FEATURE_DEVICE_REMOTE_WAKEUP 0x01

#define	FEATURE_ENDPOINT_HALT 0x00

#define	TEST_J 0x01

#define	TEST_K 0x02

#define	TEST_SEO_NAK 0x03

#define	TEST_PACKET 0x04

#define	TEST_FORCE_ENABLE 0x05

#define	BUS_POWERED 0

#define	SELF_POWERED 1

Functions
void	usb_start_device (void)
	This function initializes the USB device controller. More...

Variables
volatile uint16_t	g_usb_event
	Public : U16 g_usb_event usb_connected is used to store USB events detected upon USB general interrupt subroutine Its value is managed by the following macros (See usb_task.h file) Usb_send_event(x) Usb_ack_event(x) Usb_clear_all_event() Is_usb_event(x) Is_not_usb_event(x)

Detailed Description

This file manages the USB task either device/host or both.

  The USB task selects the correct USB task (usb_device task or usb_host task
  to be executed depending on the current mode available.

  According to USB_DEVICE_FEATURE and USB_HOST_FEATURE value (located in conf_usb.h file)
  The usb_task can be configured to support USB DEVICE mode or USB Host mode or both
  for a dual role device application.

  This module also contains the general USB interrupt subroutine. This subroutine is used
  to detect asynchronous USB events.

  Note:
    - The usb_task belongs to the scheduler, the usb_device_task and usb_host do not, they are called
      from the general usb_task
    - See conf_usb.h file for more details about the configuration of this module

Definition in file usb_task.h.

Macros

Functions

Variables

Detailed Description