usb_task.h File Reference

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Data Structures
struct	S_hid_set_control
Defines
#define	Set_page_usb()
Functions
void	usb_task_init (void)
	This function initializes the USB the associated variables.
void	usb_start_device (void)
	This function initializes the USB device controller.
void	usb_task (void)
	Entry point of the USB mamnagement.

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Define Documentation

#define Set_page_usb (   )

Definition at line 24 of file usb_task.h. Referenced by usb_start_device(), usb_task(), and usb_task_init().

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Function Documentation

void usb_task_init (  void   )

This function initializes the USB the associated variables. 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. Warning: Code:?? bytes (function code length) Parameters: none  Returns: none / Definition at line 68 of file usb_task.c. References FALSE, Set_page_usb, sof_counter, toggle_next_time, TRUE, usb_connected, usb_continuous_mode, Usb_enable, and usb_start_device(). { Set_page_usb(); Usb_enable(); // enable the USB controller usb_start_device(); sof_counter = 0; usb_connected = TRUE; toggle_next_time = 0; usb_continuous_mode = FALSE; }

void usb_start_device (  void   )

This function initializes the USB device controller. 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. Warning: Code:?? bytes (function code length) Parameters: none  Returns: none / Definition at line 95 of file usb_task.c. References Enable_interrupt, Enable_usb_interrupt, Set_page_usb, U16, Usb_ack_suspend, Usb_attach, Usb_detach, Usb_enable_reset_interrupt, Usb_enable_resume_interrupt, Usb_enable_sof_interrupt, Usb_enable_suspend_interrupt, Usb_enable_wake_up_interrupt, usb_generate_clock(), usb_init_device(), Usb_set_speed, and Usb_unfreeze_clock. Referenced by usb_task_init(). { U16 c; usb_generate_clock(); Set_page_usb(); Usb_unfreeze_clock(); Usb_set_speed(); // for speed analysis Usb_ack_suspend(); Usb_detach(); for (c=0; c<1000; c++); Usb_attach(); Usb_enable_suspend_interrupt(); Usb_enable_resume_interrupt(); Usb_enable_reset_interrupt(); Usb_enable_wake_up_interrupt(); Usb_enable_sof_interrupt(); Enable_usb_interrupt(); Enable_interrupt(); usb_init_device(); // configure the USB controller EP0 Usb_attach(); }

void usb_task (  void   )

Entry point of the USB mamnagement. This function is the entry point of the USB management. Each USB event is checked here in order to launch the appropriate action. If a Setup request occurs on the Default Control Endpoint, the usb_process_request() function is call in the usb_enum.c file If a new USB mass storage Command Block Wrapper (CBW) occurs, this one will be decoded and the SCSI command will be taken in charge by the scsi decoder. Warning: Code:?? bytes (function code length) Parameters: none  Returns: none this part of the code can be modify following the application end of modification Definition at line 133 of file usb_task.c. References Disable_ale, Enable_interrupt, EP_CONTROL, EP_HID_IN, FALSE, Is_usb_in_ready, Is_usb_receive_setup, Led_all_off, Pll_stop, send_free, Set_page_usb, SetControlBytes, TRUE, S_hid_set_control::type, Usb_ack_in_ready, usb_connected, usb_continuous_mode, usb_process_request(), Usb_select_endpoint, and Usb_suspend_action. { if (!usb_connected) /* power down mode when USB not connected */ { Pll_stop(); /* disable PLL before going in power down mode */ Enable_interrupt(); // Shutdown board ressources Led_all_off(); Disable_ale(); if (!usb_connected) { Usb_suspend_action(); // see in conf_usb.h _nop_(); } } else //USB Connected { // USB MANAGEMENT Set_page_usb (); Usb_select_endpoint(EP_CONTROL); if (Is_usb_receive_setup()) { usb_process_request(); if(SetControlBytes.type==0) { usb_continuous_mode = FALSE; } if(SetControlBytes.type==1) { usb_continuous_mode = TRUE ; } } if(usb_continuous_mode == TRUE) { Usb_select_endpoint(EP_HID_IN); if(Is_usb_in_ready()) { send_free = 1; Usb_ack_in_ready(); } } } }

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