USBXpress global variable declaration, initialization, and call-back function definitions.

Version: 5.4.0

License

This file is licensed under the Silabs License Agreement. See the file "Silabs_License_Agreement.txt" for details. Before using this software for any purpose, you must agree to the terms of that agreement.

Definition in file em_usbxpress.c .


       #include <stddef.h>


       #include <stdbool.h>


       #include "
       
        em_usbxpress_internal.h
       
       "


       #include "
       
        em_usbxpress_descriptors.h
       
       "


       #include "
       
        em_usbxpress.h
       
       "

Functions
USB_DeviceDescriptor_TypeDef USBXCORE_deviceDesc	SL_ATTRIBUTE_ALIGN (4)
	Copy of device descriptor, so it can be edited.

void	USBX_apiCallbackDisable (void)
	Inhibits user API call-backs and does NOT disable the USB interrupt.

void	USBX_apiCallbackEnable ( USBX_apiCallback_t f)
	Enables user API call-backs.

int	USBX_blockRead (uint8_t block, uint32_t numBytes, uint32_t countPtr)
	User API function to get data from host.

int	USBX_blockWrite (uint8_t block, uint32_t numBytes, uint32_t countPtr)
	User API function to send data to host.

	USBX_BUF (USBXCORE_overflowBuffer, USB_FS_BULK_EP_MAXSIZE )
	Buffer to hold overflow rx data if a ZLP read returns more than zero bytes.

void	USBX_disable (void)
	Disables the USB interface.

uint32_t	USBX_getCallbackSource (void)
	User API function to get the call-back source.

uint_least16_t	USBX_getLibraryVersion (void)
	Returns the USBXpress library version.

void	USBX_init ( USBX_Init_t *p)
	User API USB initialization function.

void	USBX_jumpCallback (void)
	Conditionally jumps to the user call-back routine.

void	USBXCORE_resetState (void)
	Resets internal USBXpress variables.

Variables
uint32_t	USBXCORE_apiEa
	Enable or disable status of USB_API interrupts.

uint32_t	USBXCORE_apiIntValue
	Byte holding the current USB_API interrupts.

uint32_t *	USBXCORE_byteCountInPtr
	Pointer to variable holding number of bytes written.

uint32_t *	USBXCORE_byteCountOutPtr
	Pointer to variable holding number of bytes read.

uint32_t	USBXCORE_readSize
	Number of bytes sent to USBX_blockRead() as numBytes.

bool	USBXCORE_rxOverflowPacketAvailable = false
	Boolean indicating if data was received while expecting a ZLP.

uint32_t	USBXCORE_rxOverflowPacketSize = 0
	Size of Rx Overflow Packet.

USB_StringDescriptor_TypeDef const *	USBXCORE_stringDescTable [4]
	Table of pointers to various string descriptors.

uint32_t	USBXCORE_writeSize
	Number of bytes sent to USBX_blockWrite() as numBytes.

bool	USBXCORE_zlpActive = false
	Boolean indicating whether a ZLP read is active.

Function Documentation

const USB_ExtendedPropertiesDescriptor_t USBXCORE_extendedPropertiesDesc SL_ATTRIBUTE_ALIGN ( 4 )

Initial value:

         =
        
         {
        
          EXT_COMP_DESC_SIZE
         
         ,
        
         0x0100,
        
          FEATURE_EXTENDED_COMPATIBILITY_ID
         
         ,
        
          NUM_IFCS_WITH_EXT_COMPAT
         
         ,
        
         { 0, 0, 0, 0, 0, 0, 0 },
        
         {
        
         {
        
         0,
        
         1,
        
          "WINUSB\0"
         
         ,
        
         { 0, 0, 0, 0, 0, 0, 0, 0 },
        
         { 0, 0, 0, 0, 0, 0 },
        
         },
        
         }
        
         }

Copy of device descriptor, so it can be edited.

Extended Properties Descriptor.

Compatible ID Feature Descriptor.

Copy of configuration descriptor.

void USBX_jumpCallback ( void )

Conditionally jumps to the user call-back routine.

If the user call-back routine is already in progress, this function does nothing. Otherwise, this function jumps to the call-back defined via USBX_callbackEnable().

Definition at line 254 of file em_usbxpress.c .

Referenced by USBX_DeviceStateChangeCb() , USBX_inXferCompleteCb() , USBX_outXferCompleteCb() , USBX_ResetCb() , and USBX_SetupCmdCb() .

void USBXCORE_resetState ( void )

Resets internal USBXpress variables.

This function resets the internal USBXpress variables. It should be called after a cancel-type event (USBXpress Close, USB de-configure, FIFO flush, etc.).

Definition at line 266 of file em_usbxpress.c .

References USBXCORE_rxOverflowPacketAvailable , and USBXCORE_zlpActive .

Referenced by USBX_DeviceStateChangeCb() , USBX_ResetCb() , and USBX_SetupCmdCb() .

em_usbxpress.c File Reference

License

Functions

Variables

Function Documentation