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639 lines
25 KiB
C
639 lines
25 KiB
C
/*
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ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/**
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* @file hal_usb.h
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* @brief USB Driver macros and structures.
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*
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* @addtogroup USB
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* @{
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*/
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#ifndef HAL_USB_H
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#define HAL_USB_H
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#if (HAL_USE_USB == TRUE) || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Driver constants. */
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/*===========================================================================*/
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#define USB_ENDPOINT_OUT(ep) (ep)
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#define USB_ENDPOINT_IN(ep) ((ep) | 0x80U)
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#define USB_RTYPE_DIR_MASK 0x80U
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#define USB_RTYPE_DIR_HOST2DEV 0x00U
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#define USB_RTYPE_DIR_DEV2HOST 0x80U
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#define USB_RTYPE_TYPE_MASK 0x60U
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#define USB_RTYPE_TYPE_STD 0x00U
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#define USB_RTYPE_TYPE_CLASS 0x20U
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#define USB_RTYPE_TYPE_VENDOR 0x40U
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#define USB_RTYPE_TYPE_RESERVED 0x60U
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#define USB_RTYPE_RECIPIENT_MASK 0x1FU
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#define USB_RTYPE_RECIPIENT_DEVICE 0x00U
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#define USB_RTYPE_RECIPIENT_INTERFACE 0x01U
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#define USB_RTYPE_RECIPIENT_ENDPOINT 0x02U
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#define USB_RTYPE_RECIPIENT_OTHER 0x03U
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#define USB_REQ_GET_STATUS 0U
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#define USB_REQ_CLEAR_FEATURE 1U
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#define USB_REQ_SET_FEATURE 3U
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#define USB_REQ_SET_ADDRESS 5U
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#define USB_REQ_GET_DESCRIPTOR 6U
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#define USB_REQ_SET_DESCRIPTOR 7U
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#define USB_REQ_GET_CONFIGURATION 8U
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#define USB_REQ_SET_CONFIGURATION 9U
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#define USB_REQ_GET_INTERFACE 10U
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#define USB_REQ_SET_INTERFACE 11U
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#define USB_REQ_SYNCH_FRAME 12U
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#define USB_DESCRIPTOR_DEVICE 1U
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#define USB_DESCRIPTOR_CONFIGURATION 2U
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#define USB_DESCRIPTOR_STRING 3U
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#define USB_DESCRIPTOR_INTERFACE 4U
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#define USB_DESCRIPTOR_ENDPOINT 5U
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#define USB_DESCRIPTOR_DEVICE_QUALIFIER 6U
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#define USB_DESCRIPTOR_OTHER_SPEED_CFG 7U
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#define USB_DESCRIPTOR_INTERFACE_POWER 8U
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#define USB_DESCRIPTOR_INTERFACE_ASSOCIATION 11U
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#define USB_FEATURE_ENDPOINT_HALT 0U
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#define USB_FEATURE_DEVICE_REMOTE_WAKEUP 1U
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#define USB_FEATURE_TEST_MODE 2U
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#define USB_EARLY_SET_ADDRESS 0
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#define USB_LATE_SET_ADDRESS 1
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#define USB_EP0_STATUS_STAGE_SW 0
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#define USB_EP0_STATUS_STAGE_HW 1
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#define USB_SET_ADDRESS_ACK_SW 0
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#define USB_SET_ADDRESS_ACK_HW 1
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/**
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* @name Helper macros for USB descriptors
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* @{
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*/
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/**
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* @brief Helper macro for index values into descriptor strings.
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*/
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#define USB_DESC_INDEX(i) ((uint8_t)(i))
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/**
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* @brief Helper macro for byte values into descriptor strings.
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*/
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#define USB_DESC_BYTE(b) ((uint8_t)(b))
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/**
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* @brief Helper macro for word values into descriptor strings.
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*/
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#define USB_DESC_WORD(w) \
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(uint8_t)((w) & 255U), \
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(uint8_t)(((w) >> 8) & 255U)
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/**
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* @brief Helper macro for BCD values into descriptor strings.
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*/
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#define USB_DESC_BCD(bcd) \
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(uint8_t)((bcd) & 255U), \
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(uint8_t)(((bcd) >> 8) & 255)
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/*
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* @define Device Descriptor size.
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*/
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#define USB_DESC_DEVICE_SIZE 18U
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/**
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* @brief Device Descriptor helper macro.
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*/
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#define USB_DESC_DEVICE(bcdUSB, bDeviceClass, bDeviceSubClass, \
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bDeviceProtocol, bMaxPacketSize, idVendor, \
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idProduct, bcdDevice, iManufacturer, \
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iProduct, iSerialNumber, bNumConfigurations) \
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USB_DESC_BYTE(USB_DESC_DEVICE_SIZE), \
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USB_DESC_BYTE(USB_DESCRIPTOR_DEVICE), \
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USB_DESC_BCD(bcdUSB), \
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USB_DESC_BYTE(bDeviceClass), \
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USB_DESC_BYTE(bDeviceSubClass), \
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USB_DESC_BYTE(bDeviceProtocol), \
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USB_DESC_BYTE(bMaxPacketSize), \
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USB_DESC_WORD(idVendor), \
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USB_DESC_WORD(idProduct), \
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USB_DESC_BCD(bcdDevice), \
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USB_DESC_INDEX(iManufacturer), \
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USB_DESC_INDEX(iProduct), \
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USB_DESC_INDEX(iSerialNumber), \
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USB_DESC_BYTE(bNumConfigurations)
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/**
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* @brief Configuration Descriptor size.
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*/
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#define USB_DESC_CONFIGURATION_SIZE 9U
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/**
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* @brief Configuration Descriptor helper macro.
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*/
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#define USB_DESC_CONFIGURATION(wTotalLength, bNumInterfaces, \
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bConfigurationValue, iConfiguration, \
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bmAttributes, bMaxPower) \
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USB_DESC_BYTE(USB_DESC_CONFIGURATION_SIZE), \
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USB_DESC_BYTE(USB_DESCRIPTOR_CONFIGURATION), \
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USB_DESC_WORD(wTotalLength), \
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USB_DESC_BYTE(bNumInterfaces), \
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USB_DESC_BYTE(bConfigurationValue), \
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USB_DESC_INDEX(iConfiguration), \
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USB_DESC_BYTE(bmAttributes), \
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USB_DESC_BYTE(bMaxPower)
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/**
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* @brief Interface Descriptor size.
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*/
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#define USB_DESC_INTERFACE_SIZE 9U
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/**
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* @brief Interface Descriptor helper macro.
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*/
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#define USB_DESC_INTERFACE(bInterfaceNumber, bAlternateSetting, \
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bNumEndpoints, bInterfaceClass, \
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bInterfaceSubClass, bInterfaceProtocol, \
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iInterface) \
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USB_DESC_BYTE(USB_DESC_INTERFACE_SIZE), \
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USB_DESC_BYTE(USB_DESCRIPTOR_INTERFACE), \
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USB_DESC_BYTE(bInterfaceNumber), \
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USB_DESC_BYTE(bAlternateSetting), \
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USB_DESC_BYTE(bNumEndpoints), \
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USB_DESC_BYTE(bInterfaceClass), \
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USB_DESC_BYTE(bInterfaceSubClass), \
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USB_DESC_BYTE(bInterfaceProtocol), \
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USB_DESC_INDEX(iInterface)
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/**
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* @brief Interface Association Descriptor size.
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*/
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#define USB_DESC_INTERFACE_ASSOCIATION_SIZE 8U
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/**
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* @brief Interface Association Descriptor helper macro.
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*/
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#define USB_DESC_INTERFACE_ASSOCIATION(bFirstInterface, \
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bInterfaceCount, bFunctionClass, \
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bFunctionSubClass, bFunctionProcotol, \
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iInterface) \
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USB_DESC_BYTE(USB_DESC_INTERFACE_ASSOCIATION_SIZE), \
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USB_DESC_BYTE(USB_DESCRIPTOR_INTERFACE_ASSOCIATION), \
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USB_DESC_BYTE(bFirstInterface), \
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USB_DESC_BYTE(bInterfaceCount), \
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USB_DESC_BYTE(bFunctionClass), \
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USB_DESC_BYTE(bFunctionSubClass), \
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USB_DESC_BYTE(bFunctionProcotol), \
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USB_DESC_INDEX(iInterface)
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/**
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* @brief Endpoint Descriptor size.
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*/
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#define USB_DESC_ENDPOINT_SIZE 7U
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/**
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* @brief Endpoint Descriptor helper macro.
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*/
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#define USB_DESC_ENDPOINT(bEndpointAddress, bmAttributes, wMaxPacketSize, \
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bInterval) \
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USB_DESC_BYTE(USB_DESC_ENDPOINT_SIZE), \
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USB_DESC_BYTE(USB_DESCRIPTOR_ENDPOINT), \
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USB_DESC_BYTE(bEndpointAddress), \
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USB_DESC_BYTE(bmAttributes), \
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USB_DESC_WORD(wMaxPacketSize), \
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USB_DESC_BYTE(bInterval)
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/** @} */
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/**
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* @name Endpoint types and settings
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* @{
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*/
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#define USB_EP_MODE_TYPE 0x0003U /**< Endpoint type mask. */
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#define USB_EP_MODE_TYPE_CTRL 0x0000U /**< Control endpoint. */
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#define USB_EP_MODE_TYPE_ISOC 0x0001U /**< Isochronous endpoint. */
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#define USB_EP_MODE_TYPE_BULK 0x0002U /**< Bulk endpoint. */
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#define USB_EP_MODE_TYPE_INTR 0x0003U /**< Interrupt endpoint. */
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/** @} */
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#define USB_IN_STATE 0x08U
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#define USB_OUT_STATE 0x10U
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/*===========================================================================*/
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/* Driver pre-compile time settings. */
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/*===========================================================================*/
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/**
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* @brief Enables synchronous APIs.
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* @note Disabling this option saves both code and data space.
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*/
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#if !defined(USB_USE_WAIT) || defined(__DOXYGEN__)
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#define USB_USE_WAIT FALSE
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#endif
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/*===========================================================================*/
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/* Derived constants and error checks. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver data structures and types. */
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/*===========================================================================*/
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/**
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* @brief Type of a structure representing an USB driver.
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*/
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typedef struct USBDriver USBDriver;
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/**
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* @brief Type of an endpoint identifier.
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*/
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typedef uint8_t usbep_t;
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/**
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* @brief Type of a driver state machine possible states.
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*/
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typedef enum {
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USB_UNINIT = 0, /**< Not initialized. */
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USB_STOP = 1, /**< Stopped. */
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USB_READY = 2, /**< Ready, after bus reset. */
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USB_SELECTED = 3, /**< Address assigned. */
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USB_ACTIVE = 4, /**< Active, configuration selected.*/
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USB_SUSPENDED = 5 /**< Suspended, low power mode. */
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} usbstate_t;
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/**
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* @brief Type of an endpoint status.
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*/
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typedef enum {
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EP_STATUS_DISABLED = 0, /**< Endpoint not active. */
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EP_STATUS_STALLED = 1, /**< Endpoint opened but stalled. */
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EP_STATUS_ACTIVE = 2 /**< Active endpoint. */
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} usbepstatus_t;
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/**
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* @brief Type of an endpoint zero state machine states.
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*/
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typedef enum {
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USB_EP0_STP_WAITING = 0U, /**< Waiting for SETUP data.*/
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USB_EP0_IN_TX = USB_IN_STATE | 1U, /**< Transmitting. */
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USB_EP0_IN_WAITING_TX0 = USB_IN_STATE | 2U, /**< Waiting transmit 0. */
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USB_EP0_IN_SENDING_STS = USB_IN_STATE | 3U, /**< Sending status. */
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USB_EP0_OUT_WAITING_STS = USB_OUT_STATE | 4U, /**< Waiting status. */
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USB_EP0_OUT_RX = USB_OUT_STATE | 5U, /**< Receiving. */
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USB_EP0_ERROR = 6U /**< Error, EP0 stalled. */
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} usbep0state_t;
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/**
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* @brief Type of an enumeration of the possible USB events.
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*/
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typedef enum {
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USB_EVENT_RESET = 0, /**< Driver has been reset by host. */
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USB_EVENT_ADDRESS = 1, /**< Address assigned. */
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USB_EVENT_CONFIGURED = 2, /**< Configuration selected. */
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USB_EVENT_UNCONFIGURED = 3, /**< Configuration removed. */
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USB_EVENT_SUSPEND = 4, /**< Entering suspend mode. */
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USB_EVENT_WAKEUP = 5, /**< Leaving suspend mode. */
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USB_EVENT_STALLED = 6 /**< Endpoint 0 error, stalled. */
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} usbevent_t;
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/**
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* @brief Type of an USB descriptor.
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*/
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typedef struct {
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/**
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* @brief Descriptor size in unicode characters.
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*/
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size_t ud_size;
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/**
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* @brief Pointer to the descriptor.
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*/
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const uint8_t *ud_string;
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} USBDescriptor;
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/**
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* @brief Type of an USB generic notification callback.
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*
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* @param[in] usbp pointer to the @p USBDriver object triggering the
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* callback
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*/
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typedef void (*usbcallback_t)(USBDriver *usbp);
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/**
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* @brief Type of an USB endpoint callback.
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*
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* @param[in] usbp pointer to the @p USBDriver object triggering the
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* callback
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* @param[in] ep endpoint number
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*/
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typedef void (*usbepcallback_t)(USBDriver *usbp, usbep_t ep);
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/**
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* @brief Type of an USB event notification callback.
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*
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* @param[in] usbp pointer to the @p USBDriver object triggering the
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* callback
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* @param[in] event event type
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*/
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typedef void (*usbeventcb_t)(USBDriver *usbp, usbevent_t event);
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/**
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* @brief Type of a requests handler callback.
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* @details The request is encoded in the @p usb_setup buffer.
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*
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* @param[in] usbp pointer to the @p USBDriver object triggering the
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* callback
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* @return The request handling exit code.
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* @retval false Request not recognized by the handler.
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* @retval true Request handled.
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*/
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typedef bool (*usbreqhandler_t)(USBDriver *usbp);
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/**
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* @brief Type of an USB descriptor-retrieving callback.
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*/
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typedef const USBDescriptor * (*usbgetdescriptor_t)(USBDriver *usbp,
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uint8_t dtype,
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uint8_t dindex,
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uint16_t lang);
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#include "hal_usb_lld.h"
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/*===========================================================================*/
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/* Driver macros. */
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/*===========================================================================*/
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/**
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* @name Macro Functions
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* @{
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*/
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/**
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* @brief Returns the driver state.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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* @return The driver state.
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*
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* @iclass
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*/
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#define usbGetDriverStateI(usbp) ((usbp)->state)
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/**
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* @brief Connects the USB device.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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*
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* @api
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*/
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#define usbConnectBus(usbp) usb_lld_connect_bus(usbp)
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/**
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* @brief Disconnect the USB device.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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*
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* @api
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*/
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#define usbDisconnectBus(usbp) usb_lld_disconnect_bus(usbp)
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/**
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* @brief Returns the current frame number.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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* @return The current frame number.
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*
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* @xclass
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*/
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#define usbGetFrameNumberX(usbp) usb_lld_get_frame_number(usbp)
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/**
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* @brief Returns the status of an IN endpoint.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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* @param[in] ep endpoint number
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* @return The operation status.
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* @retval false Endpoint ready.
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* @retval true Endpoint transmitting.
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*
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* @iclass
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*/
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#define usbGetTransmitStatusI(usbp, ep) \
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(((usbp)->transmitting & (uint16_t)((unsigned)1U << (unsigned)(ep))) != 0U)
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/**
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* @brief Returns the status of an OUT endpoint.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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* @param[in] ep endpoint number
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* @return The operation status.
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* @retval false Endpoint ready.
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* @retval true Endpoint receiving.
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*
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* @iclass
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*/
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#define usbGetReceiveStatusI(usbp, ep) \
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(((usbp)->receiving & (uint16_t)((unsigned)1U << (unsigned)(ep))) != 0U)
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/**
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* @brief Returns the exact size of a receive transaction.
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* @details The received size can be different from the size specified in
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* @p usbStartReceiveI() because the last packet could have a size
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* different from the expected one.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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* @param[in] ep endpoint number
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* @return Received data size.
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*
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* @xclass
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*/
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#define usbGetReceiveTransactionSizeX(usbp, ep) \
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usb_lld_get_transaction_size(usbp, ep)
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/**
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* @brief Request transfer setup.
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* @details This macro is used by the request handling callbacks in order to
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* prepare a transaction over the endpoint zero.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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* @param[in] buf pointer to a buffer for the transaction data
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* @param[in] n number of bytes to be transferred
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* @param[in] endcb callback to be invoked after the transfer or @p NULL
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*
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* @special
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*/
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#define usbSetupTransfer(usbp, buf, n, endcb) { \
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(usbp)->ep0next = (buf); \
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(usbp)->ep0n = (n); \
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(usbp)->ep0endcb = (endcb); \
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}
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/**
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* @brief Reads a setup packet from the dedicated packet buffer.
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* @details This function must be invoked in the context of the @p setup_cb
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* callback in order to read the received setup packet.
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* @pre In order to use this function the endpoint must have been
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* initialized as a control endpoint.
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* @note This function can be invoked both in thread and IRQ context.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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* @param[in] ep endpoint number
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* @param[out] buf buffer where to copy the packet data
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*
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* @special
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*/
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#define usbReadSetup(usbp, ep, buf) usb_lld_read_setup(usbp, ep, buf)
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/** @} */
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/**
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* @name Low level driver helper macros
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* @{
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*/
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/**
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* @brief Common ISR code, usb event callback.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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* @param[in] evt USB event code
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*
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* @notapi
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*/
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#define _usb_isr_invoke_event_cb(usbp, evt) { \
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if (((usbp)->config->event_cb) != NULL) { \
|
|
(usbp)->config->event_cb(usbp, evt); \
|
|
} \
|
|
}
|
|
|
|
/**
|
|
* @brief Common ISR code, SOF callback.
|
|
*
|
|
* @param[in] usbp pointer to the @p USBDriver object
|
|
*
|
|
* @notapi
|
|
*/
|
|
#define _usb_isr_invoke_sof_cb(usbp) { \
|
|
if (((usbp)->config->sof_cb) != NULL) { \
|
|
(usbp)->config->sof_cb(usbp); \
|
|
} \
|
|
}
|
|
|
|
/**
|
|
* @brief Common ISR code, setup packet callback.
|
|
*
|
|
* @param[in] usbp pointer to the @p USBDriver object
|
|
* @param[in] ep endpoint number
|
|
*
|
|
* @notapi
|
|
*/
|
|
#define _usb_isr_invoke_setup_cb(usbp, ep) { \
|
|
(usbp)->epc[ep]->setup_cb(usbp, ep); \
|
|
}
|
|
|
|
/**
|
|
* @brief Common ISR code, IN endpoint callback.
|
|
*
|
|
* @param[in] usbp pointer to the @p USBDriver object
|
|
* @param[in] ep endpoint number
|
|
*
|
|
* @notapi
|
|
*/
|
|
#if (USB_USE_WAIT == TRUE) || defined(__DOXYGEN__)
|
|
#define _usb_isr_invoke_in_cb(usbp, ep) { \
|
|
(usbp)->transmitting &= ~(1 << (ep)); \
|
|
if ((usbp)->epc[ep]->in_cb != NULL) { \
|
|
(usbp)->epc[ep]->in_cb(usbp, ep); \
|
|
} \
|
|
osalSysLockFromISR(); \
|
|
osalThreadResumeI(&(usbp)->epc[ep]->in_state->thread, MSG_OK); \
|
|
osalSysUnlockFromISR(); \
|
|
}
|
|
#else
|
|
#define _usb_isr_invoke_in_cb(usbp, ep) { \
|
|
(usbp)->transmitting &= ~(1 << (ep)); \
|
|
if ((usbp)->epc[ep]->in_cb != NULL) { \
|
|
(usbp)->epc[ep]->in_cb(usbp, ep); \
|
|
} \
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* @brief Common ISR code, OUT endpoint event.
|
|
*
|
|
* @param[in] usbp pointer to the @p USBDriver object
|
|
* @param[in] ep endpoint number
|
|
*
|
|
* @notapi
|
|
*/
|
|
#if (USB_USE_WAIT == TRUE) || defined(__DOXYGEN__)
|
|
#define _usb_isr_invoke_out_cb(usbp, ep) { \
|
|
(usbp)->receiving &= ~(1 << (ep)); \
|
|
if ((usbp)->epc[ep]->out_cb != NULL) { \
|
|
(usbp)->epc[ep]->out_cb(usbp, ep); \
|
|
} \
|
|
osalSysLockFromISR(); \
|
|
osalThreadResumeI(&(usbp)->epc[ep]->out_state->thread, \
|
|
usbGetReceiveTransactionSizeX(usbp, ep)); \
|
|
osalSysUnlockFromISR(); \
|
|
}
|
|
#else
|
|
#define _usb_isr_invoke_out_cb(usbp, ep) { \
|
|
(usbp)->receiving &= ~(1 << (ep)); \
|
|
if ((usbp)->epc[ep]->out_cb != NULL) { \
|
|
(usbp)->epc[ep]->out_cb(usbp, ep); \
|
|
} \
|
|
}
|
|
#endif
|
|
/** @} */
|
|
|
|
/*===========================================================================*/
|
|
/* External declarations. */
|
|
/*===========================================================================*/
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
void usbInit(void);
|
|
void usbObjectInit(USBDriver *usbp);
|
|
void usbStart(USBDriver *usbp, const USBConfig *config);
|
|
void usbStop(USBDriver *usbp);
|
|
void usbInitEndpointI(USBDriver *usbp, usbep_t ep,
|
|
const USBEndpointConfig *epcp);
|
|
void usbDisableEndpointsI(USBDriver *usbp);
|
|
void usbReadSetupI(USBDriver *usbp, usbep_t ep, uint8_t *buf);
|
|
void usbStartReceiveI(USBDriver *usbp, usbep_t ep,
|
|
uint8_t *buf, size_t n);
|
|
void usbStartTransmitI(USBDriver *usbp, usbep_t ep,
|
|
const uint8_t *buf, size_t n);
|
|
#if USB_USE_WAIT == TRUE
|
|
msg_t usbReceive(USBDriver *usbp, usbep_t ep, uint8_t *buf, size_t n);
|
|
msg_t usbTransmit(USBDriver *usbp, usbep_t ep, const uint8_t *buf, size_t n);
|
|
#endif
|
|
bool usbStallReceiveI(USBDriver *usbp, usbep_t ep);
|
|
bool usbStallTransmitI(USBDriver *usbp, usbep_t ep);
|
|
void usbWakeupHost(USBDriver *usbp);
|
|
void _usb_reset(USBDriver *usbp);
|
|
void _usb_suspend(USBDriver *usbp);
|
|
void _usb_wakeup(USBDriver *usbp);
|
|
void _usb_ep0setup(USBDriver *usbp, usbep_t ep);
|
|
void _usb_ep0in(USBDriver *usbp, usbep_t ep);
|
|
void _usb_ep0out(USBDriver *usbp, usbep_t ep);
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* HAL_USE_USB == TRUE */
|
|
|
|
#endif /* HAL_USB_H */
|
|
|
|
/** @} */
|