udc.c File Reference

USB Device Controller (UDC)

Copyright (c) 2009-2018 Microchip Technology Inc. and its subsidiaries.

#include "conf_usb.h"
#include "usb_protocol.h"
#include "udd.h"
#include "udc_desc.h"
#include "udi.h"
#include "udc.h"

Data Structures
struct	udc_string_desc_t
	USB device string descriptor Structure used to transfer ASCII strings to USB String descriptor structure. More...

Functions
static usb_conf_desc_t UDC_DESC_STORAGE *	udc_get_eof_conf (void)
	Returns a value to check the end of USB Configuration descriptor. More...
usb_iface_desc_t UDC_DESC_STORAGE *	udc_get_interface_desc (void)
	Returns a pointer on the current interface descriptor. More...
static bool	udc_iface_disable (uint8_t iface_num)
	Disables an usb device interface (UDI) This routine call the UDI corresponding to interface number. More...
static bool	udc_iface_enable (uint8_t iface_num, uint8_t setting_num)
	Enables an usb device interface (UDI) This routine calls the UDI corresponding to the interface and setting number. More...
bool	udc_process_setup (void)
	Main routine to manage the USB SETUP request. More...
static bool	udc_req_ep (void)
	Send the SETUP interface request to UDI. More...
static bool	udc_req_iface (void)
	Send the SETUP interface request to UDI. More...
static bool	udc_req_std_dev_clear_feature (void)
	Standard device request to change device status. More...
static bool	udc_req_std_dev_get_configuration (void)
	Standard device request to get configuration number. More...
static bool	udc_req_std_dev_get_descriptor (void)
	Standard device request to get descriptors about USB device. More...
static bool	udc_req_std_dev_get_status (void)
	Standard device request to get device status. More...
static bool	udc_req_std_dev_get_str_desc (void)
	Standard device request to get device string descriptor. More...
static bool	udc_req_std_dev_set_address (void)
	Standard device request to set device address. More...
static bool	udc_req_std_dev_set_configuration (void)
	Standard device request to enable a configuration. More...
static bool	udc_req_std_dev_set_feature (void)
	Standard device request to set a feature. More...
static bool	udc_req_std_iface_get_setting (void)
	Standard interface request to get the alternate setting number of an interface. More...
static bool	udc_req_std_iface_set_setting (void)
	Standard interface request to set an alternate setting of an interface. More...
static bool	udc_reqstd (void)
	Main routine to manage the standard USB SETUP request. More...
void	udc_reset (void)
	Reset the current configuration of the USB device, This routines can be called by UDD when a RESET on the USB line occurs. More...
void	udc_sof_notify (void)
	To signal that a SOF is occurred. More...
void	udc_start (void)
	Start the USB Device stack. More...
void	udc_stop (void)
	Stop the USB Device stack. More...
static bool	udc_update_iface_desc (uint8_t iface_num, uint8_t setting_num)
	Search an interface descriptor This routine updates the internal pointer udc_ptr_iface. More...
static void	udc_valid_address (void)
	Standard endpoint request to halt an endpoint. More...

Variables
Internal variables to manage the USB device
static le16_t	udc_device_status
	Device status state (see enum usb_device_status in usb_protocol.h) More...
static COMPILER_WORD_ALIGNED uint8_t	udc_iface_setting = 0
	Device interface setting value. More...
static COMPILER_WORD_ALIGNED uint8_t	udc_num_configuration = 0
	Device Configuration number selected by the USB host. More...
static udc_config_speed_t UDC_DESC_STORAGE *	udc_ptr_conf
	Pointer on the selected speed device configuration. More...
static usb_iface_desc_t UDC_DESC_STORAGE *	udc_ptr_iface
	Pointer on interface descriptor used by SETUP request. More...

Internal structure to store the USB device main strings
#define	USB_DEVICE_MANUFACTURE_NAME_SIZE   0
	USB device manufacture name storage String is allocated only if USB_DEVICE_MANUFACTURE_NAME is declared by usb application configuration. More...
#define	USB_DEVICE_PRODUCT_NAME_SIZE   0
	USB device product name storage String is allocated only if USB_DEVICE_PRODUCT_NAME is declared by usb application configuration. More...
#define	USB_DEVICE_SERIAL_NAME_SIZE   0
	Get USB device serial number. More...
static COMPILER_WORD_ALIGNED UDC_DESC_STORAGE usb_str_lgid_desc_t	udc_string_desc_languageid
	Language ID of USB device (US ID by default) More...
static COMPILER_WORD_ALIGNED UDC_DESC_STORAGE struct udc_string_desc_t	udc_string_desc