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rt-thread-official/bsp/imxrt/Libraries/imxrt1050/devices/MIMXRT1052/utilities/virtual_com.c

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[BSP] Add i.MXRT libraires.
2018-09-20 23:18:14 +08:00
/*
* The Clear BSD License
* Copyright (c) 2015, Freescale Semiconductor, Inc.
* Copyright 2016-2017 NXP
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted (subject to the limitations in the disclaimer below) provided
* that the following conditions are met:
*
* o Redistributions of source code must retain the above copyright notice, this list
* of conditions and the following disclaimer.
*
* o Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* o Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "fsl_device_registers.h"
#include "clock_config.h"
#include "board.h"
#include <stdio.h>
#include <stdlib.h>
#include "usb_device_config.h"
#include "usb.h"
#include "usb_device.h"
#include "usb_device_cdc_acm.h"
#include "usb_device_ch9.h"
#include "usb_device_descriptor.h"
#include "virtual_com.h"
#if (defined(FSL_FEATURE_SOC_SYSMPU_COUNT) && (FSL_FEATURE_SOC_SYSMPU_COUNT > 0U))
#include "fsl_sysmpu.h"
#endif /* FSL_FEATURE_SOC_SYSMPU_COUNT */
#if defined(USB_DEVICE_CONFIG_EHCI) && (USB_DEVICE_CONFIG_EHCI > 0)
#include "usb_phy.h"
#endif
/* Provided by users. */
extern void USB_DeviceClockInit(void);
extern void USB_DeviceIsrEnable(void);
/*******************************************************************************
* Definitions
******************************************************************************/
/*******************************************************************************
* Variables
******************************************************************************/
/* Data structure of virtual com device */
usb_cdc_vcom_struct_t s_cdcVcom;
/* Line codinig of cdc device */
static uint8_t s_lineCoding[LINE_CODING_SIZE] = {
/* E.g. 0x00,0xC2,0x01,0x00 : 0x0001C200 is 115200 bits per second */
(LINE_CODING_DTERATE >> 0U) & 0x000000FFU,
(LINE_CODING_DTERATE >> 8U) & 0x000000FFU,
(LINE_CODING_DTERATE >> 16U) & 0x000000FFU,
(LINE_CODING_DTERATE >> 24U) & 0x000000FFU,
LINE_CODING_CHARFORMAT,
LINE_CODING_PARITYTYPE,
LINE_CODING_DATABITS};
/* Abstract state of cdc device */
static uint8_t s_abstractState[COMM_FEATURE_DATA_SIZE] = {(STATUS_ABSTRACT_STATE >> 0U) & 0x00FFU,
(STATUS_ABSTRACT_STATE >> 8U) & 0x00FFU};
/* Country code of cdc device */
static uint8_t s_countryCode[COMM_FEATURE_DATA_SIZE] = {(COUNTRY_SETTING >> 0U) & 0x00FFU,
(COUNTRY_SETTING >> 8U) & 0x00FFU};
/* CDC ACM information */
static usb_cdc_acm_info_t s_usbCdcAcmInfo = {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, 0, 0, 0, 0, 0};
/* Data buffer for receiving and sending*/
static uint8_t s_currRecvBuf[DATA_BUFF_SIZE];
volatile static uint32_t s_recvSize = 0;
volatile static uint32_t s_sendSize = 0;
volatile static uint8_t s_sendComplete = 0;
volatile static uint8_t s_currRecvIndex = 0;
static uint32_t s_usbBulkMaxPacketSize = FS_CDC_VCOM_BULK_OUT_PACKET_SIZE;
/*******************************************************************************
* Prototypes
******************************************************************************/
/*******************************************************************************
* Code
******************************************************************************/
/*!
* @brief Interrupt in pipe callback function.
*
* This function serves as the callback function for interrupt in pipe.
*
* @param handle The USB device handle.
* @param message The endpoint callback message
* @param callbackParam The parameter of the callback.
*
* @return A USB error code or kStatus_USB_Success.
*/
usb_status_t USB_DeviceCdcAcmInterruptIn(usb_device_handle handle,
usb_device_endpoint_callback_message_struct_t *message,
void *callbackParam)
{
usb_status_t error = kStatus_USB_Error;
return error;
}
/*!
* @brief Bulk in pipe callback function.
*
* This function serves as the callback function for bulk in pipe.
*
* @param handle The USB device handle.
* @param message The endpoint callback message
* @param callbackParam The parameter of the callback.
*
* @return A USB error code or kStatus_USB_Success.
*/
usb_status_t USB_DeviceCdcAcmBulkIn(usb_device_handle handle,
usb_device_endpoint_callback_message_struct_t *message,
void *callbackParam)
{
usb_status_t error = kStatus_USB_Error;
if ((message->length != 0) && (!(message->length % s_usbBulkMaxPacketSize)))
{
/* If the last packet is the size of endpoint, then send also zero-ended packet,
** meaning that we want to inform the host that we do not have any additional
** data, so it can flush the output.
*/
USB_DeviceSendRequest(handle, USB_CDC_VCOM_BULK_IN_ENDPOINT, NULL, 0);
}
else if ((1 == s_cdcVcom.attach) && (1 == s_cdcVcom.startTransactions))
{
if ((message->buffer != NULL) || ((message->buffer == NULL) && (message->length == 0)))
{
/* User: add your own code for send complete event */
s_sendComplete = 1;
#if defined(FSL_FEATURE_USB_KHCI_KEEP_ALIVE_ENABLED) && (FSL_FEATURE_USB_KHCI_KEEP_ALIVE_ENABLED > 0U) && \
defined(USB_DEVICE_CONFIG_KEEP_ALIVE_MODE) && (USB_DEVICE_CONFIG_KEEP_ALIVE_MODE > 0U) && \
defined(FSL_FEATURE_USB_KHCI_USB_RAM) && (FSL_FEATURE_USB_KHCI_USB_RAM > 0U)
USB0->INTEN &= ~USB_INTEN_SOFTOKEN_MASK;
#endif
}
}
else if ((0 == s_sendComplete) && (1 == s_cdcVcom.attach) && (0 == s_cdcVcom.startTransactions))
{
s_sendComplete = 1;
}
else
{
}
return error;
}
/*!
* @brief Bulk out pipe callback function.
*
* This function serves as the callback function for bulk out pipe.
*
* @param handle The USB device handle.
* @param message The endpoint callback message
* @param callbackParam The parameter of the callback.
*
* @return A USB error code or kStatus_USB_Success.
*/
usb_status_t USB_DeviceCdcAcmBulkOut(usb_device_handle handle,
usb_device_endpoint_callback_message_struct_t *message,
void *callbackParam)
{
usb_status_t error = kStatus_USB_Error;
if (USB_UNINITIALIZED_VAL_32 == message->length)
{
s_recvSize = 0xFFFFFFFFU;
}
else if ((1 == s_cdcVcom.attach) && (1 == s_cdcVcom.startTransactions))
{
s_recvSize = message->length;
#if defined(FSL_FEATURE_USB_KHCI_KEEP_ALIVE_ENABLED) && (FSL_FEATURE_USB_KHCI_KEEP_ALIVE_ENABLED > 0U) && \
defined(USB_DEVICE_CONFIG_KEEP_ALIVE_MODE) && (USB_DEVICE_CONFIG_KEEP_ALIVE_MODE > 0U) && \
defined(FSL_FEATURE_USB_KHCI_USB_RAM) && (FSL_FEATURE_USB_KHCI_USB_RAM > 0U)
USB0->INTEN |= USB_INTEN_SOFTOKEN_MASK;
#endif
if (!s_recvSize)
{
#if defined(FSL_FEATURE_USB_KHCI_KEEP_ALIVE_ENABLED) && (FSL_FEATURE_USB_KHCI_KEEP_ALIVE_ENABLED > 0U) && \
defined(USB_DEVICE_CONFIG_KEEP_ALIVE_MODE) && (USB_DEVICE_CONFIG_KEEP_ALIVE_MODE > 0U) && \
defined(FSL_FEATURE_USB_KHCI_USB_RAM) && (FSL_FEATURE_USB_KHCI_USB_RAM > 0U)
USB0->INTEN &= ~USB_INTEN_SOFTOKEN_MASK;
#endif
}
}
else
{
}
return error;
}
/*!
* @brief Get the setup packet buffer.
*
* This function provides the buffer for setup packet.
*
* @param handle The USB device handle.
* @param setupBuffer The pointer to the address of setup packet buffer.
*
* @return A USB error code or kStatus_USB_Success.
*/
usb_status_t USB_DeviceGetSetupBuffer(usb_device_handle handle, usb_setup_struct_t **setupBuffer)
{
static uint32_t cdcVcomSetup[2];
if (NULL == setupBuffer)
{
return kStatus_USB_InvalidParameter;
}
*setupBuffer = (usb_setup_struct_t *)&cdcVcomSetup;
return kStatus_USB_Success;
}
/*!
* @brief Get the setup packet data buffer.
*
* This function gets the data buffer for setup packet.
*
* @param handle The USB device handle.
* @param setup The pointer to the setup packet.
* @param length The pointer to the length of the data buffer.
* @param buffer The pointer to the address of setup packet data buffer.
*
* @return A USB error code or kStatus_USB_Success.
*/
usb_status_t USB_DeviceGetClassReceiveBuffer(usb_device_handle handle,
usb_setup_struct_t *setup,
uint32_t *length,
uint8_t **buffer)
{
static uint8_t setupOut[8];
if ((NULL == buffer) || ((*length) > sizeof(setupOut)))
{
return kStatus_USB_InvalidRequest;
}
*buffer = setupOut;
return kStatus_USB_Success;
}
/*!
* @brief Configure remote wakeup feature.
*
* This function configures the remote wakeup feature.
*
* @param handle The USB device handle.
* @param enable 1: enable, 0: disable.
*
* @return A USB error code or kStatus_USB_Success.
*/
usb_status_t USB_DeviceConfigureRemoteWakeup(usb_device_handle handle, uint8_t enable)
{
return kStatus_USB_InvalidRequest;
}
/*!
* @brief CDC class specific callback function.
*
* This function handles the CDC class specific requests.
*
* @param handle The USB device handle.
* @param setup The pointer to the setup packet.
* @param length The pointer to the length of the data buffer.
* @param buffer The pointer to the address of setup packet data buffer.
*
* @return A USB error code or kStatus_USB_Success.
*/
usb_status_t USB_DeviceProcessClassRequest(usb_device_handle handle,
usb_setup_struct_t *setup,
uint32_t *length,
uint8_t **buffer)
{
usb_status_t error = kStatus_USB_InvalidRequest;
usb_cdc_acm_info_t *acmInfo = &s_usbCdcAcmInfo;
uint32_t len;
uint16_t *uartBitmap;
if (setup->wIndex != USB_CDC_VCOM_COMM_INTERFACE_INDEX)
{
return error;
}
switch (setup->bRequest)
{
case USB_DEVICE_CDC_REQUEST_SEND_ENCAPSULATED_COMMAND:
break;
case USB_DEVICE_CDC_REQUEST_GET_ENCAPSULATED_RESPONSE:
break;
case USB_DEVICE_CDC_REQUEST_SET_COMM_FEATURE:
if (USB_DEVICE_CDC_FEATURE_ABSTRACT_STATE == setup->wValue)
{
*buffer = s_abstractState;
}
else if (USB_DEVICE_CDC_FEATURE_COUNTRY_SETTING == setup->wValue)
{
*buffer = s_countryCode;
}
else
{
}
error = kStatus_USB_Success;
break;
case USB_DEVICE_CDC_REQUEST_GET_COMM_FEATURE:
if (USB_DEVICE_CDC_FEATURE_ABSTRACT_STATE == setup->wValue)
{
*buffer = s_abstractState;
*length = COMM_FEATURE_DATA_SIZE;
}
else if (USB_DEVICE_CDC_FEATURE_COUNTRY_SETTING == setup->wValue)
{
*buffer = s_countryCode;
*length = COMM_FEATURE_DATA_SIZE;
}
else
{
}
error = kStatus_USB_Success;
break;
case USB_DEVICE_CDC_REQUEST_CLEAR_COMM_FEATURE:
break;
case USB_DEVICE_CDC_REQUEST_GET_LINE_CODING:
*buffer = s_lineCoding;
*length = LINE_CODING_SIZE;
error = kStatus_USB_Success;
break;
case USB_DEVICE_CDC_REQUEST_SET_LINE_CODING:
*buffer = s_lineCoding;
error = kStatus_USB_Success;
break;
case USB_DEVICE_CDC_REQUEST_SET_CONTROL_LINE_STATE:
{
acmInfo->dteStatus = setup->wValue;
/* activate/deactivate Tx carrier */
if (acmInfo->dteStatus & USB_DEVICE_CDC_CONTROL_SIG_BITMAP_CARRIER_ACTIVATION)
{
acmInfo->uartState |= USB_DEVICE_CDC_UART_STATE_TX_CARRIER;
}
else
{
acmInfo->uartState &= (uint16_t)~USB_DEVICE_CDC_UART_STATE_TX_CARRIER;
}
/* activate carrier and DTE */
if (acmInfo->dteStatus & USB_DEVICE_CDC_CONTROL_SIG_BITMAP_DTE_PRESENCE)
{
acmInfo->uartState |= USB_DEVICE_CDC_UART_STATE_RX_CARRIER;
}
else
{
acmInfo->uartState &= (uint16_t)~USB_DEVICE_CDC_UART_STATE_RX_CARRIER;
}
/* Indicates to DCE if DTE is present or not */
acmInfo->dtePresent = (acmInfo->dteStatus & USB_DEVICE_CDC_CONTROL_SIG_BITMAP_DTE_PRESENCE) ? true : false;
/* Initialize the serial state buffer */
acmInfo->serialStateBuf[0] = NOTIF_REQUEST_TYPE; /* bmRequestType */
acmInfo->serialStateBuf[1] = USB_DEVICE_CDC_REQUEST_SERIAL_STATE_NOTIF; /* bNotification */
acmInfo->serialStateBuf[2] = 0x00; /* wValue */
acmInfo->serialStateBuf[3] = 0x00;
acmInfo->serialStateBuf[4] = 0x00; /* wIndex */
acmInfo->serialStateBuf[5] = 0x00;
acmInfo->serialStateBuf[6] = UART_BITMAP_SIZE; /* wLength */
acmInfo->serialStateBuf[7] = 0x00;
/* Notifiy to host the line state */
acmInfo->serialStateBuf[4] = setup->wIndex;
/* Lower byte of UART BITMAP */
uartBitmap = (uint16_t *)&acmInfo->serialStateBuf[NOTIF_PACKET_SIZE + UART_BITMAP_SIZE - 2];
*uartBitmap = acmInfo->uartState;
len = (uint32_t)(NOTIF_PACKET_SIZE + UART_BITMAP_SIZE);
error = USB_DeviceSendRequest(handle, USB_CDC_VCOM_INTERRUPT_IN_ENDPOINT, acmInfo->serialStateBuf, len);
/* Update status */
if (acmInfo->dteStatus & USB_DEVICE_CDC_CONTROL_SIG_BITMAP_CARRIER_ACTIVATION)
{
/* To do: CARRIER_ACTIVATED */
}
else
{
/* To do: CARRIER_DEACTIVATED */
}
if (acmInfo->dteStatus & USB_DEVICE_CDC_CONTROL_SIG_BITMAP_DTE_PRESENCE)
{
/* DTE_ACTIVATED */
if (1 == s_cdcVcom.attach)
{
s_cdcVcom.startTransactions = 1;
#if defined(FSL_FEATURE_USB_KHCI_KEEP_ALIVE_ENABLED) && (FSL_FEATURE_USB_KHCI_KEEP_ALIVE_ENABLED > 0U) && \
defined(USB_DEVICE_CONFIG_KEEP_ALIVE_MODE) && (USB_DEVICE_CONFIG_KEEP_ALIVE_MODE > 0U) && \
defined(FSL_FEATURE_USB_KHCI_USB_RAM) && (FSL_FEATURE_USB_KHCI_USB_RAM > 0U)
USB0->INTEN &= ~USB_INTEN_SOFTOKEN_MASK;
#endif
}
}
else
{
/* DTE_DEACTIVATED */
if (1 == s_cdcVcom.attach)
{
s_cdcVcom.startTransactions = 0;
}
}
}
break;
case USB_DEVICE_CDC_REQUEST_SEND_BREAK:
break;
default:
break;
}
return error;
}
/*!
* @brief USB device callback function.
*
* This function handles the usb device specific requests.
*
* @param handle The USB device handle.
* @param event The USB device event type.
* @param param The parameter of the device specific request.
*
* @return A USB error code or kStatus_USB_Success.
*/
usb_status_t USB_DeviceCallback(usb_device_handle handle, uint32_t event, void *param)
{
usb_status_t error = kStatus_USB_Error;
uint8_t *temp8 = (uint8_t *)param;
switch (event)
{
case kUSB_DeviceEventBusReset:
{
USB_DeviceControlPipeInit(s_cdcVcom.deviceHandle);
s_cdcVcom.attach = 0;
#if (defined(USB_DEVICE_CONFIG_EHCI) && (USB_DEVICE_CONFIG_EHCI > 0)) || \
(defined(USB_DEVICE_CONFIG_LPCIP3511HS) && (USB_DEVICE_CONFIG_LPCIP3511HS > 0U))
if (kStatus_USB_Success ==
USB_DeviceGetStatus(s_cdcVcom.deviceHandle, kUSB_DeviceStatusSpeed, &s_cdcVcom.speed))
{
USB_DeviceSetSpeed(handle, s_cdcVcom.speed);
}
#endif
}
break;
case kUSB_DeviceEventSetConfiguration:
if (param)
{
s_cdcVcom.attach = 1;
s_cdcVcom.currentConfiguration = *temp8;
if (USB_CDC_VCOM_CONFIGURE_INDEX == (*temp8))
{
usb_device_endpoint_init_struct_t epInitStruct;
usb_device_endpoint_callback_struct_t endpointCallback;
/* Initiailize endpoint for interrupt pipe */
endpointCallback.callbackFn = USB_DeviceCdcAcmInterruptIn;
endpointCallback.callbackParam = handle;
epInitStruct.zlt = 0;
epInitStruct.transferType = USB_ENDPOINT_INTERRUPT;
epInitStruct.endpointAddress = USB_CDC_VCOM_INTERRUPT_IN_ENDPOINT |
(USB_IN << USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_SHIFT);
if (USB_SPEED_HIGH == s_cdcVcom.speed)
{
epInitStruct.maxPacketSize = HS_CDC_VCOM_INTERRUPT_IN_PACKET_SIZE;
}
else
{
epInitStruct.maxPacketSize = FS_CDC_VCOM_INTERRUPT_IN_PACKET_SIZE;
}
USB_DeviceInitEndpoint(s_cdcVcom.deviceHandle, &epInitStruct, &endpointCallback);
/* Initiailize endpoints for bulk pipe */
endpointCallback.callbackFn = USB_DeviceCdcAcmBulkIn;
endpointCallback.callbackParam = handle;
epInitStruct.zlt = 0;
epInitStruct.transferType = USB_ENDPOINT_BULK;
epInitStruct.endpointAddress =
USB_CDC_VCOM_BULK_IN_ENDPOINT | (USB_IN << USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_SHIFT);
if (USB_SPEED_HIGH == s_cdcVcom.speed)
{
epInitStruct.maxPacketSize = HS_CDC_VCOM_BULK_IN_PACKET_SIZE;
}
else
{
epInitStruct.maxPacketSize = FS_CDC_VCOM_BULK_IN_PACKET_SIZE;
}
USB_DeviceInitEndpoint(s_cdcVcom.deviceHandle, &epInitStruct, &endpointCallback);
endpointCallback.callbackFn = USB_DeviceCdcAcmBulkOut;
endpointCallback.callbackParam = handle;
epInitStruct.zlt = 0;
epInitStruct.transferType = USB_ENDPOINT_BULK;
epInitStruct.endpointAddress =
USB_CDC_VCOM_BULK_OUT_ENDPOINT | (USB_OUT << USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_SHIFT);
if (USB_SPEED_HIGH == s_cdcVcom.speed)
{
epInitStruct.maxPacketSize = HS_CDC_VCOM_BULK_OUT_PACKET_SIZE;
}
else
{
epInitStruct.maxPacketSize = FS_CDC_VCOM_BULK_OUT_PACKET_SIZE;
}
USB_DeviceInitEndpoint(s_cdcVcom.deviceHandle, &epInitStruct, &endpointCallback);
if (USB_SPEED_HIGH == s_cdcVcom.speed)
{
s_usbBulkMaxPacketSize = HS_CDC_VCOM_BULK_OUT_PACKET_SIZE;
}
else
{
s_usbBulkMaxPacketSize = FS_CDC_VCOM_BULK_OUT_PACKET_SIZE;
}
}
}
break;
default:
break;
}
return error;
}
/*!
* @brief USB configure endpoint function.
*
* This function configure endpoint status.
*
* @param handle The USB device handle.
* @param ep Endpoint address.
* @param status A flag to indicate whether to stall the endpoint. 1: stall, 0: unstall.
*
* @return A USB error code or kStatus_USB_Success.
*/
usb_status_t USB_DeviceConfigureEndpointStatus(usb_device_handle handle, uint8_t ep, uint8_t status)
{
if (status)
{
return USB_DeviceStallEndpoint(handle, ep);
}
else
{
return USB_DeviceUnstallEndpoint(handle, ep);
}
}
/* See virtual_com.h for documentation of this function. */
void USB_VcomWriteBlocking(usb_device_handle baseAddr, const uint8_t *buf, size_t count)
{
while ((s_cdcVcom.attach != 1) || (s_cdcVcom.startTransactions != 1))
{
__NOP();
};
USB_DeviceSendRequest((usb_device_handle)baseAddr, USB_CDC_VCOM_BULK_IN_ENDPOINT, (uint8_t *)buf, count);
while (!s_sendComplete)
{
__NOP();
};
s_sendComplete = 0;
}
/* See virtual_com.h for documentation of this function. */
status_t USB_VcomReadBlocking(usb_device_handle baseAddr, uint8_t *buf, size_t count)
{
status_t error = kStatus_Success;
size_t bufIndex = 0U, bytesToReceive = 0U;
assert(count != 0U);
/* Waiting for the USB ready. */
while ((s_cdcVcom.attach != 1) || (s_cdcVcom.startTransactions != 1))
{
__NOP();
};
do
{
/* If no receive request. */
if (s_recvSize <= 0)
{
if (kStatus_USB_Success !=
USB_DeviceRecvRequest(baseAddr, USB_CDC_VCOM_BULK_OUT_ENDPOINT, s_currRecvBuf, s_usbBulkMaxPacketSize))
{
return kStatus_Fail;
}
s_currRecvIndex = 0;
}
/* Waiting for data received by virtual com. */
while (s_recvSize <= 0)
{
__NOP();
};
/* When receive request is error. */
if (0xFFFFFFFFU == s_recvSize)
{
/* Waiting for the USB ready and transfer started. */
while ((s_cdcVcom.attach != 1) || (s_cdcVcom.startTransactions != 1))
{
__NOP();
};
s_recvSize = 0;
}
else
{
bytesToReceive = MIN(count, s_recvSize);
memcpy((void *)&buf[bufIndex], s_currRecvBuf + s_currRecvIndex, bytesToReceive);
count -= bytesToReceive;
s_recvSize -= bytesToReceive;
bufIndex += bytesToReceive;
s_currRecvIndex += bytesToReceive;
}
} while (0U != count);
return error;
}
/* See virtual_com.h for documentation of this function. */
usb_device_handle USB_VcomInit(void)
{
usb_device_handle deviceHandle = NULL;
USB_DeviceClockInit();
#if (defined(FSL_FEATURE_SOC_SYSMPU_COUNT) && (FSL_FEATURE_SOC_SYSMPU_COUNT > 0U))
SYSMPU_Enable(SYSMPU, 0);
#endif /* FSL_FEATURE_SOC_SYSMPU_COUNT */
s_cdcVcom.speed = USB_SPEED_FULL;
s_cdcVcom.attach = 0;
s_cdcVcom.deviceHandle = NULL;
if (kStatus_USB_Success != USB_DeviceInit(CONTROLLER_ID, USB_DeviceCallback, &s_cdcVcom.deviceHandle))
{
deviceHandle = NULL;
}
else
{
deviceHandle = s_cdcVcom.deviceHandle;
USB_DeviceIsrEnable();
USB_DeviceRun(s_cdcVcom.deviceHandle);
}
return deviceHandle;
}
/* See virtual_com.h for documentation of this function. */
void USB_VcomDeinit(usb_device_handle deviceHandle)
{
USB_DeviceStop(deviceHandle);
USB_DeviceDeinit(deviceHandle);
s_cdcVcom.deviceHandle = NULL;
#if defined(USB_DEVICE_CONFIG_EHCI) && (USB_DEVICE_CONFIG_EHCI > 0)
USB_EhciPhyDeinit(CONTROLLER_ID);
#endif
#if defined(USB_DEVICE_CONFIG_KHCI) && (USB_DEVICE_CONFIG_KHCI > 0)
CLOCK_DisableUsbfs0Clock();
#endif
#if defined(USB_DEVICE_CONFIG_LPCIP3511FS) && (USB_DEVICE_CONFIG_LPCIP3511FS > 0U)
/* enable USB IP clock, user code. */
CLOCK_DisableClock(kCLOCK_Usbd0);
#endif /* USB_DEVICE_CONFIG_LPCIP3511FS */
#if defined(USB_DEVICE_CONFIG_LPCIP3511HS) && (USB_DEVICE_CONFIG_LPCIP3511HS > 0U)
/* enable USB IP clock,user code. */
#endif /* USB_DEVICE_CONFIG_LPCIP3511HS */
}