EFM32 Happy Gecko Software Documentation
efm32hg-doc-5.1.2
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USBXpress global variable declaration, initialization, and call-back function definitions.
Copyright 2016 Silicon Laboratories, Inc. http://www.silabs.com
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"
Go to the source code of this file.
Functions | |
USB_DeviceDescriptor_TypeDef USBXCORE_deviceDesc | SL_ATTRIBUTE_ALIGN (4) |
Copy of device descriptor, so it can be edited. More... | |
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. More... | |
int | USBX_blockRead (uint8_t *block, uint32_t numBytes, uint32_t *countPtr) |
User API function to get data from host. More... | |
int | USBX_blockWrite (uint8_t *block, uint32_t numBytes, uint32_t *countPtr) |
User API function to send data to host. More... | |
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. More... | |
uint_least16_t | USBX_getLibraryVersion (void) |
Returns the USBXpress library version. More... | |
void | USBX_init (USBX_Init_t *p) |
User API USB initialization function. More... | |
void | USBX_jumpCallback (void) |
Conditionally jumps to the user call-back routine. More... | |
void | USBXCORE_resetState (void) |
Resets internal USBXpress variables. More... | |
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. | |
const USB_ExtendedPropertiesDescriptor_t USBXCORE_extendedPropertiesDesc SL_ATTRIBUTE_ALIGN | ( | 4 | ) |
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 264 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 276 of file em_usbxpress.c.
References USBXCORE_rxOverflowPacketAvailable, and USBXCORE_zlpActive.
Referenced by USBX_DeviceStateChangeCb(), USBX_ResetCb(), and USBX_SetupCmdCb().