Functions | |
void | usb_device_task_init (void) |
This function initializes the USB device controller. | |
void | usb_start_device (void) |
This function initializes the USB device controller. | |
void | usb_device_task (void) |
Entry point of the USB device mamagement. |
void usb_device_task_init | ( | 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.
none |
Definition at line 73 of file usb_device_task.c.
References Usb_disable, Usb_enable, Usb_enable_vbus_interrupt, Usb_low_speed_mode, and Usb_select_device.
Referenced by usb_task_init().
00074 { 00075 Enable_interrupt(); 00076 Usb_disable(); 00077 Usb_enable(); 00078 Usb_select_device(); 00079 #if (USB_LOW_SPEED_DEVICE==ENABLE) 00080 Usb_low_speed_mode(); 00081 #endif 00082 Usb_enable_vbus_interrupt(); 00083 Enable_interrupt(); 00084 00085 }
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. Start device function is executed once VBUS connection has been detected either by the VBUS change interrupt either by the VBUS high level
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Definition at line 100 of file usb_device_task.c.
References Usb_attach, Usb_enable_reset_interrupt, Usb_enable_suspend_interrupt, usb_init_device(), Usb_unfreeze_clock, and Wait_pll_ready.
Referenced by usb_device_task(), and usb_general_interrupt().
00101 { 00102 Pll_start_auto(); 00103 Wait_pll_ready(); 00104 Usb_unfreeze_clock(); 00105 Usb_enable_suspend_interrupt(); 00106 Usb_enable_reset_interrupt(); 00107 usb_init_device(); // configure the USB controller EP0 00108 Usb_attach(); 00109 }
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void usb_device_task | ( | void | ) |
Entry point of the USB device mamagement.
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_standard_request.c file
none |
Definition at line 121 of file usb_device_task.c.
References EP_CONTROL, EVT_USB_RESET, FALSE, Is_usb_event, Is_usb_receive_setup, Is_usb_vbus_high, TRUE, Usb_ack_event, usb_configuration_nb, usb_connected, usb_process_request(), Usb_reset_endpoint, Usb_select_endpoint, usb_start_device(), and Usb_vbus_on_action.
Referenced by usb_task().
00122 { 00123 if (Is_usb_vbus_high()&& usb_connected==FALSE) 00124 { 00125 usb_connected = TRUE; 00126 usb_start_device(); 00127 Usb_vbus_on_action(); 00128 } 00129 00130 if(Is_usb_event(EVT_USB_RESET)) 00131 { 00132 Usb_ack_event(EVT_USB_RESET); 00133 Usb_reset_endpoint(0); 00134 usb_configuration_nb=0; 00135 } 00136 00137 // Here connection to the device enumeration process 00138 Usb_select_endpoint(EP_CONTROL); 00139 if (Is_usb_receive_setup()) 00140 { 00141 usb_process_request(); 00142 } 00143 }
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