USB task entry point module

Modules
	USB software Events Management
	Macros to manage USB events detected under interrupt.
	Standard requests defines

Macros
#define	USB_HIGH_SPEED_SUPPORT   false
#define	USB_MODE_DEVICE   0x01
#define	USB_MODE_HOST   0x02
#define	USB_MODE_UNDEFINED   0x00

Functions
U32	host_get_timeout (void)
void	usb_task (void)
	Entry point of the USB mamnagement. More...
void	usb_task_init (void)
	This function initializes the USB process. More...

Variables
volatile U16	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) Is_usb_event(x) Usb_clear_all_event() More...
volatile U8	g_usb_mode
	Public: U8 g_usb_mode Used in dual-role application (both device/host) to store the current mode the USB controller is operating. More...
volatile U32	private_sof_counter
	Private: U8 private_sof_counter Incremented by host SOF interrupt subroutine This counter is used to detect time-out in host requests. More...

#define USB_HIGH_SPEED_SUPPORT   false

#define USB_MODE_DEVICE   0x01

Referenced by usb_general_interrupt(), and usb_task().

#define USB_MODE_HOST   0x02

Referenced by usb_general_interrupt(), and usb_task().

#define USB_MODE_UNDEFINED   0x00

Referenced by usb_task().

U32 host_get_timeout

(

void

)

References private_sof_counter.

Referenced by host_transfer_control().

void usb_task

(

void

)

Entry point of the USB mamnagement.

Depending on the mode supported (HOST/DEVICE/DUAL_ROLE) the function calls the corresponding USB management function

Entry point of the USB mamnagement.

Depending on the USB mode supported (HOST/DEVICE/DUAL_ROLE) the function calls the corresponding USB management function.

References Enable_global_interrupt, g_old_usb_mode, g_usb_mode, Is_usb_id_device, private_sof_counter, usb_device_task(), usb_device_task_init(), Usb_enable_id_interrupt, usb_host_task(), usb_host_task_init(), USB_MODE_DEVICE, USB_MODE_HOST, and USB_MODE_UNDEFINED.

Referenced by main(), and usb_task_init().

void usb_task_init

(

void

)

This function initializes the USB process.

This function enables the USB controller and init the USB interrupts. The aim is to allow the USB connection detection in order to send the appropriate USB event to the operating mode manager. Depending on the mode supported (HOST/DEVICE/DUAL_ROLE) the function calls the corresponding USB mode initialization function

Depending on the mode supported (HOST/DEVICE/DUAL_ROLE) the function calls the corresponding USB mode initialization function

References usb_task().

Referenced by main().

volatile U16 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) Is_usb_event(x) Usb_clear_all_event()

volatile U8 g_usb_mode

Public: U8 g_usb_mode Used in dual-role application (both device/host) to store the current mode the USB controller is operating.

Referenced by usb_general_interrupt(), and usb_task().

volatile U32 private_sof_counter

Private: U8 private_sof_counter Incremented by host SOF interrupt subroutine This counter is used to detect time-out in host requests.

It must not be modified by the user applicative tasks.

Referenced by host_get_data(), host_get_timeout(), host_send_data(), host_transfer_control(), usb_general_interrupt(), and usb_task().