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RabbitECUTeensyMCUXpresso/usb/device/class/usb_device_cdc_acm.c

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/*
* Copyright (c) 2015, Freescale Semiconductor, Inc.
* Copyright 2016 NXP
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include "fsl_device_registers.h"
#include <stdio.h>
#include <stdlib.h>
#include "usb_device_config.h"
#include "usb.h"
#include "usb_device.h"
#include "usb_device_class.h"
#if USB_DEVICE_CONFIG_CDC_ACM
#include "usb_device_cdc_acm.h"
/*******************************************************************************
* Definitions
******************************************************************************/
#define USB_CDC_ACM_ENTER_CRITICAL() \
USB_OSA_SR_ALLOC(); \
USB_OSA_ENTER_CRITICAL()
#define USB_CDC_ACM_EXIT_CRITICAL() USB_OSA_EXIT_CRITICAL()
/*******************************************************************************
* Variables
******************************************************************************/
/* CDC ACM device instance */
USB_GLOBAL USB_RAM_ADDRESS_ALIGNMENT(USB_DATA_ALIGN_SIZE)
usb_device_cdc_acm_struct_t g_cdcAcmHandle[USB_DEVICE_CONFIG_CDC_ACM];
/*******************************************************************************
* Code
******************************************************************************/
/*!
* @brief Allocates the CDC ACM device handle.
*
* This function allocates the CDC ACM device handle.
*
* @param handle The class handle of the CDC ACM class.
* @return A USB error code or kStatus_USB_Success.
*/
static usb_status_t USB_DeviceCdcAcmAllocateHandle(usb_device_cdc_acm_struct_t **handle)
{
int32_t count;
for (count = 0; count < USB_DEVICE_CONFIG_CDC_ACM; count++)
{
if (NULL == g_cdcAcmHandle[count].handle)
{
*handle = &g_cdcAcmHandle[count];
return kStatus_USB_Success;
}
}
return kStatus_USB_Busy;
}
/*!
* @brief Frees the CDC ACM device handle.
*
* This function frees the CDC ACM device handle.
*
* @param handle The class handle of the CDC ACM class.
* @return A USB error code or kStatus_USB_Success.
*/
static usb_status_t USB_DeviceCdcAcmFreeHandle(usb_device_cdc_acm_struct_t *handle)
{
handle->handle = NULL;
handle->configStruct = NULL;
handle->configuration = 0;
handle->alternate = 0;
return kStatus_USB_Success;
}
/*!
* @brief Responds to the interrupt in endpoint event.
*
* This function responds to the interrupt in endpoint event.
*
* @param handle The device handle of the CDC ACM device.
* @param message The pointer to the message of the endpoint callback.
* @param callbackParam The pointer to 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_device_cdc_acm_struct_t *cdcAcmHandle;
usb_status_t error = kStatus_USB_Error;
cdcAcmHandle = (usb_device_cdc_acm_struct_t *)callbackParam;
if (!cdcAcmHandle)
{
return kStatus_USB_InvalidHandle;
}
cdcAcmHandle->interruptIn.isBusy = 0;
if ((NULL != cdcAcmHandle->configStruct) && (cdcAcmHandle->configStruct->classCallback))
{
/*classCallback is initialized in classInit of s_UsbDeviceClassInterfaceMap,
it is from the second parameter of classInit */
error = cdcAcmHandle->configStruct->classCallback((class_handle_t)cdcAcmHandle,
kUSB_DeviceCdcEventSerialStateNotif, message);
}
return error;
}
/*!
* @brief Responds to the bulk in endpoint event.
*
* This function responds to the bulk in endpoint event.
*
* @param handle The device handle of the CDC ACM device.
* @param message The pointer to the message of the endpoint callback.
* @param callbackParam The pointer to 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_device_cdc_acm_struct_t *cdcAcmHandle;
usb_status_t error = kStatus_USB_Error;
cdcAcmHandle = (usb_device_cdc_acm_struct_t *)callbackParam;
if (!cdcAcmHandle)
{
return kStatus_USB_InvalidHandle;
}
cdcAcmHandle->bulkIn.isBusy = 0;
if ((NULL != cdcAcmHandle->configStruct) && (cdcAcmHandle->configStruct->classCallback))
{
/*classCallback is initialized in classInit of s_UsbDeviceClassInterfaceMap,
it is from the second parameter of classInit */
error = cdcAcmHandle->configStruct->classCallback((class_handle_t)cdcAcmHandle, kUSB_DeviceCdcEventSendResponse,
message);
}
return error;
}
/*!
* @brief Responds to the bulk out endpoint event.
*
* This function responds to the bulk out endpoint event.
*
* @param handle The device handle of the CDC ACM device.
* @param message The pointer to the message of the endpoint callback.
* @param callbackParam The pointer to 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_device_cdc_acm_struct_t *cdcAcmHandle;
usb_status_t error = kStatus_USB_Error;
cdcAcmHandle = (usb_device_cdc_acm_struct_t *)callbackParam;
if (!cdcAcmHandle)
{
return kStatus_USB_InvalidHandle;
}
cdcAcmHandle->bulkOut.isBusy = 0;
if ((NULL != cdcAcmHandle->configStruct) && (cdcAcmHandle->configStruct->classCallback))
{
/*classCallback is initialized in classInit of s_UsbDeviceClassInterfaceMap,
it is from the second parameter of classInit */
error = cdcAcmHandle->configStruct->classCallback((class_handle_t)cdcAcmHandle, kUSB_DeviceCdcEventRecvResponse,
message);
}
return error;
}
/*!
* @brief Initializes the endpoints in CDC ACM class.
*
* This function initializes the endpoints in CDC ACM class.
*
* @param cdcAcmHandle The class handle of the CDC ACM class.
* @return A USB error code or kStatus_USB_Success.
*/
usb_status_t USB_DeviceCdcAcmEndpointsInit(usb_device_cdc_acm_struct_t *cdcAcmHandle)
{
usb_device_interface_list_t *interfaceList;
usb_device_interface_struct_t *interface = NULL;
usb_status_t error = kStatus_USB_Error;
if (!cdcAcmHandle)
{
return error;
}
/* return error when configuration is invalid (0 or more than the configuration number) */
if ((cdcAcmHandle->configuration == 0U) ||
(cdcAcmHandle->configuration > cdcAcmHandle->configStruct->classInfomation->configurations))
{
return error;
}
interfaceList = &cdcAcmHandle->configStruct->classInfomation->interfaceList[cdcAcmHandle->configuration - 1];
for (int count = 0; count < interfaceList->count; count++)
{
if (USB_DEVICE_CONFIG_CDC_COMM_CLASS_CODE == interfaceList->interfaces[count].classCode)
{
for (int index = 0; index < interfaceList->interfaces[count].count; index++)
{
if (interfaceList->interfaces[count].interface[index].alternateSetting == cdcAcmHandle->alternate)
{
interface = &interfaceList->interfaces[count].interface[index];
break;
}
}
cdcAcmHandle->interfaceNumber = interfaceList->interfaces[count].interfaceNumber;
break;
}
}
if (!interface)
{
return error;
}
cdcAcmHandle->commInterfaceHandle = interface;
for (int count = 0; count < interface->endpointList.count; count++)
{
usb_device_endpoint_init_struct_t epInitStruct;
usb_device_endpoint_callback_struct_t epCallback;
epInitStruct.zlt = 0;
epInitStruct.interval = interface->endpointList.endpoint[count].interval;
epInitStruct.endpointAddress = interface->endpointList.endpoint[count].endpointAddress;
epInitStruct.maxPacketSize = interface->endpointList.endpoint[count].maxPacketSize;
epInitStruct.transferType = interface->endpointList.endpoint[count].transferType;
if ((USB_IN == ((epInitStruct.endpointAddress & USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_MASK) >>
USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_SHIFT)) &&
(USB_ENDPOINT_INTERRUPT == epInitStruct.transferType))
{
cdcAcmHandle->interruptIn.ep = (epInitStruct.endpointAddress & USB_DESCRIPTOR_ENDPOINT_ADDRESS_NUMBER_MASK);
cdcAcmHandle->interruptIn.isBusy = 0;
cdcAcmHandle->interruptIn.pipeDataBuffer = (uint8_t*)USB_UNINITIALIZED_VAL_32;
cdcAcmHandle->interruptIn.pipeStall = 0U;
cdcAcmHandle->interruptIn.pipeDataLen = 0U;
epCallback.callbackFn = USB_DeviceCdcAcmInterruptIn;
}
epCallback.callbackParam = cdcAcmHandle;
error = USB_DeviceInitEndpoint(cdcAcmHandle->handle, &epInitStruct, &epCallback);
}
for (int count = 0; count < interfaceList->count; count++)
{
if (USB_DEVICE_CONFIG_CDC_DATA_CLASS_CODE == interfaceList->interfaces[count].classCode)
{
for (int index = 0; index < interfaceList->interfaces[count].count; index++)
{
if (interfaceList->interfaces[count].interface[index].alternateSetting == cdcAcmHandle->alternate)
{
interface = &interfaceList->interfaces[count].interface[index];
break;
}
}
break;
}
}
cdcAcmHandle->dataInterfaceHandle = interface;
for (int count = 0; count < interface->endpointList.count; count++)
{
usb_device_endpoint_init_struct_t epInitStruct;
usb_device_endpoint_callback_struct_t epCallback;
epInitStruct.zlt = 0;
epInitStruct.interval = interface->endpointList.endpoint[count].interval;
epInitStruct.endpointAddress = interface->endpointList.endpoint[count].endpointAddress;
epInitStruct.maxPacketSize = interface->endpointList.endpoint[count].maxPacketSize;
epInitStruct.transferType = interface->endpointList.endpoint[count].transferType;
if ((USB_IN == ((epInitStruct.endpointAddress & USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_MASK) >>
USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_SHIFT)) &&
(USB_ENDPOINT_BULK == epInitStruct.transferType))
{
cdcAcmHandle->bulkIn.ep = (epInitStruct.endpointAddress & USB_DESCRIPTOR_ENDPOINT_ADDRESS_NUMBER_MASK);
cdcAcmHandle->bulkIn.isBusy = 0;
cdcAcmHandle->bulkIn.pipeDataBuffer = (uint8_t*)USB_UNINITIALIZED_VAL_32;
cdcAcmHandle->bulkIn.pipeStall = 0U;
cdcAcmHandle->bulkIn.pipeDataLen = 0U;
epCallback.callbackFn = USB_DeviceCdcAcmBulkIn;
}
else if ((USB_OUT == ((epInitStruct.endpointAddress & USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_MASK) >>
USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_SHIFT)) &&
(USB_ENDPOINT_BULK == epInitStruct.transferType))
{
cdcAcmHandle->bulkOut.ep = (epInitStruct.endpointAddress & USB_DESCRIPTOR_ENDPOINT_ADDRESS_NUMBER_MASK);
cdcAcmHandle->bulkOut.isBusy = 0;
cdcAcmHandle->bulkOut.pipeDataBuffer = (uint8_t*)USB_UNINITIALIZED_VAL_32;
cdcAcmHandle->bulkOut.pipeStall = 0U;
cdcAcmHandle->bulkOut.pipeDataLen = 0U;
epCallback.callbackFn = USB_DeviceCdcAcmBulkOut;
}
else
{
}
epCallback.callbackParam = cdcAcmHandle;
error = USB_DeviceInitEndpoint(cdcAcmHandle->handle, &epInitStruct, &epCallback);
}
return error;
}
/*!
* @brief De-initializes the endpoints in CDC ACM class.
*
* This function de-initializes the endpoints in CDC ACM class.
*
* @param cdcAcmHandle The class handle of the CDC ACM class.
* @return A USB error code or kStatus_USB_Success.
*/
usb_status_t USB_DeviceCdcAcmEndpointsDeinit(usb_device_cdc_acm_struct_t *cdcAcmHandle)
{
usb_status_t error = kStatus_USB_Error;
if ((!cdcAcmHandle->commInterfaceHandle) || (!cdcAcmHandle->dataInterfaceHandle))
{
return error;
}
for (int count = 0; count < cdcAcmHandle->commInterfaceHandle->endpointList.count; count++)
{
error = USB_DeviceDeinitEndpoint(
cdcAcmHandle->handle, cdcAcmHandle->commInterfaceHandle->endpointList.endpoint[count].endpointAddress);
}
for (int count = 0; count < cdcAcmHandle->dataInterfaceHandle->endpointList.count; count++)
{
error = USB_DeviceDeinitEndpoint(
cdcAcmHandle->handle, cdcAcmHandle->dataInterfaceHandle->endpointList.endpoint[count].endpointAddress);
}
cdcAcmHandle->commInterfaceHandle = NULL;
cdcAcmHandle->dataInterfaceHandle = NULL;
return error;
}
/*!
* @brief Handles the CDC ACM class event.
*
* This function responses to various events including the common device events and the class specific events.
* For class specific events, it calls the class callback defined in the application to deal with the class specific
* event.
*
* @param handle The class handle of the CDC ACM class.
* @param event The event type.
* @param param The class handle of the CDC ACM class.
* @return A USB error code or kStatus_USB_Success.
*/
usb_status_t USB_DeviceCdcAcmEvent(void *handle, uint32_t event, void *param)
{
usb_device_cdc_acm_struct_t *cdcAcmHandle;
usb_device_cdc_acm_request_param_struct_t reqParam;
usb_status_t error = kStatus_USB_Error;
uint16_t interfaceAlternate;
uint8_t *temp8;
uint8_t alternate;
if ((!param) || (!handle))
{
return kStatus_USB_InvalidHandle;
}
cdcAcmHandle = (usb_device_cdc_acm_struct_t *)handle;
switch (event)
{
case kUSB_DeviceClassEventDeviceReset:
/* Bus reset, clear the configuration. */
cdcAcmHandle->configuration = 0;
break;
case kUSB_DeviceClassEventSetConfiguration:
temp8 = ((uint8_t *)param);
if (!cdcAcmHandle->configStruct)
{
break;
}
if (*temp8 == cdcAcmHandle->configuration)
{
break;
}
error = USB_DeviceCdcAcmEndpointsDeinit(cdcAcmHandle);
cdcAcmHandle->configuration = *temp8;
cdcAcmHandle->alternate = 0;
error = USB_DeviceCdcAcmEndpointsInit(cdcAcmHandle);
if (kStatus_USB_Success != error)
{
usb_echo("kUSB_DeviceClassEventSetConfiguration, USB_DeviceInitEndpoint fail\r\n");
}
break;
case kUSB_DeviceClassEventSetInterface:
if (!cdcAcmHandle->configStruct)
{
break;
}
interfaceAlternate = *((uint16_t *)param);
alternate = (uint8_t)(interfaceAlternate & 0xFFU);
if (cdcAcmHandle->interfaceNumber != ((uint8_t)(interfaceAlternate >> 8U)))
{
break;
}
if (alternate == cdcAcmHandle->alternate)
{
break;
}
error = USB_DeviceCdcAcmEndpointsDeinit(cdcAcmHandle);
cdcAcmHandle->alternate = alternate;
error = USB_DeviceCdcAcmEndpointsInit(cdcAcmHandle);
if (kStatus_USB_Success != error)
{
usb_echo("kUSB_DeviceClassEventSetInterface, USB_DeviceInitEndpoint fail\r\n");
}
break;
case kUSB_DeviceClassEventSetEndpointHalt:
if ((!cdcAcmHandle->configStruct) || (!cdcAcmHandle->commInterfaceHandle) ||
(!cdcAcmHandle->dataInterfaceHandle))
{
break;
}
temp8 = ((uint8_t *)param);
for (int count = 0; count < cdcAcmHandle->commInterfaceHandle->endpointList.count; count++)
{
if (*temp8 == cdcAcmHandle->commInterfaceHandle->endpointList.endpoint[count].endpointAddress)
{
cdcAcmHandle->interruptIn.pipeStall = 1U;
error = USB_DeviceStallEndpoint(cdcAcmHandle->handle, *temp8);
}
}
for (int count = 0; count < cdcAcmHandle->dataInterfaceHandle->endpointList.count; count++)
{
if (*temp8 == cdcAcmHandle->dataInterfaceHandle->endpointList.endpoint[count].endpointAddress)
{
if (USB_IN == (((*temp8) & USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_MASK) >>
USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_SHIFT))
{
cdcAcmHandle->bulkIn.pipeStall = 1U;
}
else
{
cdcAcmHandle->bulkOut.pipeStall = 1U;
}
error = USB_DeviceStallEndpoint(cdcAcmHandle->handle, *temp8);
}
}
break;
case kUSB_DeviceClassEventClearEndpointHalt:
if ((!cdcAcmHandle->configStruct) || (!cdcAcmHandle->commInterfaceHandle) ||
(!cdcAcmHandle->dataInterfaceHandle))
{
break;
}
temp8 = ((uint8_t *)param);
for (int count = 0; count < cdcAcmHandle->commInterfaceHandle->endpointList.count; count++)
{
if (*temp8 == cdcAcmHandle->commInterfaceHandle->endpointList.endpoint[count].endpointAddress)
{
error = USB_DeviceUnstallEndpoint(cdcAcmHandle->handle, *temp8);
if (USB_IN == (((*temp8) & USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_MASK) >>
USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_SHIFT))
{
if (cdcAcmHandle->interruptIn.pipeStall)
{
cdcAcmHandle->interruptIn.pipeStall = 0U;
if ((uint8_t*)USB_UNINITIALIZED_VAL_32 != cdcAcmHandle->interruptIn.pipeDataBuffer)
{
error = USB_DeviceSendRequest(cdcAcmHandle->handle, (cdcAcmHandle->interruptIn.ep),
cdcAcmHandle->interruptIn.pipeDataBuffer, cdcAcmHandle->interruptIn.pipeDataLen);
if (kStatus_USB_Success != error)
{
usb_device_endpoint_callback_message_struct_t endpointCallbackMessage;
endpointCallbackMessage.buffer = cdcAcmHandle->interruptIn.pipeDataBuffer;
endpointCallbackMessage.length = cdcAcmHandle->interruptIn.pipeDataLen;
endpointCallbackMessage.isSetup = 0U;
USB_DeviceCdcAcmBulkIn(cdcAcmHandle->handle,(void*)&endpointCallbackMessage, handle);
}
cdcAcmHandle->interruptIn.pipeDataBuffer = (uint8_t*)USB_UNINITIALIZED_VAL_32;
cdcAcmHandle->interruptIn.pipeDataLen = 0U;
}
}
}
}
}
for (int count = 0; count < cdcAcmHandle->dataInterfaceHandle->endpointList.count; count++)
{
if (*temp8 == cdcAcmHandle->dataInterfaceHandle->endpointList.endpoint[count].endpointAddress)
{
error = USB_DeviceUnstallEndpoint(cdcAcmHandle->handle, *temp8);
if (USB_IN == (((*temp8) & USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_MASK) >>
USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_SHIFT))
{
if (cdcAcmHandle->bulkIn.pipeStall)
{
cdcAcmHandle->bulkIn.pipeStall = 0U;
if ((uint8_t*)USB_UNINITIALIZED_VAL_32 != cdcAcmHandle->bulkIn.pipeDataBuffer)
{
error = USB_DeviceSendRequest(cdcAcmHandle->handle, (cdcAcmHandle->bulkIn.ep),
cdcAcmHandle->bulkIn.pipeDataBuffer, cdcAcmHandle->bulkIn.pipeDataLen);
if (kStatus_USB_Success != error)
{
usb_device_endpoint_callback_message_struct_t endpointCallbackMessage;
endpointCallbackMessage.buffer = cdcAcmHandle->bulkIn.pipeDataBuffer;
endpointCallbackMessage.length = cdcAcmHandle->bulkIn.pipeDataLen;
endpointCallbackMessage.isSetup = 0U;
USB_DeviceCdcAcmBulkIn(cdcAcmHandle->handle, (void*)&endpointCallbackMessage, handle);
}
cdcAcmHandle->bulkIn.pipeDataBuffer = (uint8_t*)USB_UNINITIALIZED_VAL_32;
cdcAcmHandle->bulkIn.pipeDataLen = 0U;
}
}
}
else
{
if (cdcAcmHandle->bulkOut.pipeStall)
{
cdcAcmHandle->bulkOut.pipeStall = 0U;
if ((uint8_t*)USB_UNINITIALIZED_VAL_32 != cdcAcmHandle->bulkOut.pipeDataBuffer)
{
error = USB_DeviceRecvRequest(cdcAcmHandle->handle, (cdcAcmHandle->bulkOut.ep),
cdcAcmHandle->bulkOut.pipeDataBuffer, cdcAcmHandle->bulkOut.pipeDataLen);
if (kStatus_USB_Success != error)
{
usb_device_endpoint_callback_message_struct_t endpointCallbackMessage;
endpointCallbackMessage.buffer = cdcAcmHandle->bulkOut.pipeDataBuffer;
endpointCallbackMessage.length = cdcAcmHandle->bulkOut.pipeDataLen;
endpointCallbackMessage.isSetup = 0U;
USB_DeviceCdcAcmBulkOut(cdcAcmHandle->handle, (void*)&endpointCallbackMessage, handle);
}
cdcAcmHandle->bulkOut.pipeDataBuffer = (uint8_t*)USB_UNINITIALIZED_VAL_32;
cdcAcmHandle->bulkOut.pipeDataLen = 0U;
}
}
}
}
}
break;
case kUSB_DeviceClassEventClassRequest:
if (param)
{
usb_device_control_request_struct_t *controlRequest = (usb_device_control_request_struct_t *)param;
if ((controlRequest->setup->wIndex & 0xFFU) != cdcAcmHandle->interfaceNumber)
{
break;
}
/* Standard CDC request */
if (USB_REQUEST_TYPE_TYPE_CLASS == (controlRequest->setup->bmRequestType & USB_REQUEST_TYPE_TYPE_MASK))
{
reqParam.buffer = &(controlRequest->buffer);
reqParam.length = &(controlRequest->length);
reqParam.interfaceIndex = controlRequest->setup->wIndex;
reqParam.setupValue = controlRequest->setup->wValue;
reqParam.isSetup = controlRequest->isSetup;
switch (controlRequest->setup->bRequest)
{
case USB_DEVICE_CDC_REQUEST_SEND_ENCAPSULATED_COMMAND:
/* classCallback is initialized in classInit of s_UsbDeviceClassInterfaceMap,
it is from the second parameter of classInit */
error = cdcAcmHandle->configStruct->classCallback(
(class_handle_t)cdcAcmHandle, kUSB_DeviceCdcEventSendEncapsulatedCommand, &reqParam);
break;
case USB_DEVICE_CDC_REQUEST_GET_ENCAPSULATED_RESPONSE:
/* classCallback is initialized in classInit of s_UsbDeviceClassInterfaceMap,
it is from the second parameter of classInit */
error = cdcAcmHandle->configStruct->classCallback(
(class_handle_t)cdcAcmHandle, kUSB_DeviceCdcEventGetEncapsulatedResponse, &reqParam);
break;
case USB_DEVICE_CDC_REQUEST_SET_COMM_FEATURE:
/* classCallback is initialized in classInit of s_UsbDeviceClassInterfaceMap,
it is from the second parameter of classInit */
error = cdcAcmHandle->configStruct->classCallback(
(class_handle_t)cdcAcmHandle, kUSB_DeviceCdcEventSetCommFeature, &reqParam);
break;
case USB_DEVICE_CDC_REQUEST_GET_COMM_FEATURE:
/* classCallback is initialized in classInit of s_UsbDeviceClassInterfaceMap,
it is from the second parameter of classInit */
error = cdcAcmHandle->configStruct->classCallback(
(class_handle_t)cdcAcmHandle, kUSB_DeviceCdcEventGetCommFeature, &reqParam);
break;
case USB_DEVICE_CDC_REQUEST_CLEAR_COMM_FEATURE:
/* classCallback is initialized in classInit of s_UsbDeviceClassInterfaceMap,
it is from the second parameter of classInit */
error = cdcAcmHandle->configStruct->classCallback(
(class_handle_t)cdcAcmHandle, kUSB_DeviceCdcEventClearCommFeature, &reqParam);
break;
case USB_DEVICE_CDC_REQUEST_GET_LINE_CODING:
/* classCallback is initialized in classInit of s_UsbDeviceClassInterfaceMap,
it is from the second parameter of classInit */
error = cdcAcmHandle->configStruct->classCallback(
(class_handle_t)cdcAcmHandle, kUSB_DeviceCdcEventGetLineCoding, &reqParam);
break;
case USB_DEVICE_CDC_REQUEST_SET_LINE_CODING:
/* classCallback is initialized in classInit of s_UsbDeviceClassInterfaceMap,
it is from the second parameter of classInit */
error = cdcAcmHandle->configStruct->classCallback(
(class_handle_t)cdcAcmHandle, kUSB_DeviceCdcEventSetLineCoding, &reqParam);
break;
case USB_DEVICE_CDC_REQUEST_SET_CONTROL_LINE_STATE:
/* classCallback is initialized in classInit of s_UsbDeviceClassInterfaceMap,
it is from the second parameter of classInit */
error = cdcAcmHandle->configStruct->classCallback(
(class_handle_t)cdcAcmHandle, kUSB_DeviceCdcEventSetControlLineState, &reqParam);
break;
case USB_DEVICE_CDC_REQUEST_SEND_BREAK:
/* classCallback is initialized in classInit of s_UsbDeviceClassInterfaceMap,
it is from the second parameter of classInit */
error = cdcAcmHandle->configStruct->classCallback((class_handle_t)cdcAcmHandle,
kUSB_DeviceCdcEventSendBreak, &reqParam);
break;
default:
error = kStatus_USB_InvalidRequest;
break;
}
}
}
break;
default:
break;
}
return error;
}
/*!
* @brief Initializes the USB CDC ACM class.
*
* This function obtains a usb device handle according to the controller id, initializes the CDC ACM class
* with the class configure parameters and creates the mutex for each pipe.
*
* @param controllerId The id of the controller. The value can be choosen from kUSB_ControllerKhci0,
* kUSB_ControllerKhci1, kUSB_ControllerEhci0 or kUSB_ControllerEhci1.
* @param config The user configuration structure of type usb_device_class_config_struct_t. The user
* populates the members of this structure and passes the pointer of this structure
* into this function.
* @param handle It is out parameter. The class handle of the CDC ACM class.
* @return A USB error code or kStatus_USB_Success.
*/
usb_status_t USB_DeviceCdcAcmInit(uint8_t controllerId,
usb_device_class_config_struct_t *config,
class_handle_t *handle)
{
usb_device_cdc_acm_struct_t *cdcAcmHandle;
usb_status_t error = kStatus_USB_Error;
error = USB_DeviceCdcAcmAllocateHandle(&cdcAcmHandle);
if (kStatus_USB_Success != error)
{
return error;
}
error = USB_DeviceClassGetDeviceHandle(controllerId, &cdcAcmHandle->handle);
if (kStatus_USB_Success != error)
{
return error;
}
if (!cdcAcmHandle->handle)
{
return kStatus_USB_InvalidHandle;
}
cdcAcmHandle->configStruct = config;
cdcAcmHandle->configuration = 0;
cdcAcmHandle->alternate = 0xFF;
if (kStatus_USB_OSA_Success != USB_OsaMutexCreate(&(cdcAcmHandle->bulkIn.mutex)))
{
usb_echo("mutex create error!");
}
if (kStatus_USB_OSA_Success != USB_OsaMutexCreate(&(cdcAcmHandle->bulkOut.mutex)))
{
usb_echo("mutex create error!");
}
if (kStatus_USB_OSA_Success != USB_OsaMutexCreate(&(cdcAcmHandle->interruptIn.mutex)))
{
usb_echo("mutex create error!");
}
*handle = (class_handle_t)cdcAcmHandle;
return error;
}
/*!
* @brief De-Initializes the USB CDC ACM class.
*
* This function destroys the mutex for each pipe, deinit each endpoint of the CDC ACM class and free
* the CDC ACM class handle.
*
* @param handle The class handle of the CDC ACM class.
* @return A USB error code or kStatus_USB_Success.
*/
usb_status_t USB_DeviceCdcAcmDeinit(class_handle_t handle)
{
usb_device_cdc_acm_struct_t *cdcAcmHandle;
usb_status_t error = kStatus_USB_Error;
cdcAcmHandle = (usb_device_cdc_acm_struct_t *)handle;
if (!cdcAcmHandle)
{
return kStatus_USB_InvalidHandle;
}
if (kStatus_USB_OSA_Success != USB_OsaMutexDestroy((cdcAcmHandle->bulkIn.mutex)))
{
usb_echo("mutex destroy error!");
}
if (kStatus_USB_OSA_Success != USB_OsaMutexDestroy((cdcAcmHandle->bulkOut.mutex)))
{
usb_echo("mutex destroy error!");
}
if (kStatus_USB_OSA_Success != USB_OsaMutexDestroy((cdcAcmHandle->interruptIn.mutex)))
{
usb_echo("mutex destroy error!");
}
error = USB_DeviceCdcAcmEndpointsDeinit(cdcAcmHandle);
USB_DeviceCdcAcmFreeHandle(cdcAcmHandle);
return error;
}
/*!
* @brief Prime the endpoint to send packet to host.
*
* This function checks whether the endpoint is sending packet, then it primes the endpoint
* with the buffer address and the buffer length if the pipe is not busy. Otherwise, it ignores this transfer by
* returning an error code.
*
* @param handle The class handle of the CDC ACM class.
* @param ep The endpoint number of the transfer.
* @param buffer The pointer to the buffer to be transferred.
* @param length The length of the buffer to be transferred.
* @return A USB error code or kStatus_USB_Success.
*/
usb_status_t USB_DeviceCdcAcmSend(class_handle_t handle, uint8_t ep, uint8_t *buffer, uint32_t length)
{
usb_device_cdc_acm_struct_t *cdcAcmHandle;
usb_status_t error = kStatus_USB_Error;
usb_device_cdc_acm_pipe_t *cdcAcmPipe = NULL;
if (!handle)
{
return kStatus_USB_InvalidHandle;
}
cdcAcmHandle = (usb_device_cdc_acm_struct_t *)handle;
if (cdcAcmHandle->bulkIn.ep == ep)
{
cdcAcmPipe = &(cdcAcmHandle->bulkIn);
}
else if (cdcAcmHandle->interruptIn.ep == ep)
{
cdcAcmPipe = &(cdcAcmHandle->interruptIn);
}
else
{
}
if (NULL != cdcAcmPipe)
{
if (1U == cdcAcmPipe->isBusy)
{
return kStatus_USB_Busy;
}
cdcAcmPipe->isBusy = 1U;
if (cdcAcmPipe->pipeStall)
{
cdcAcmPipe->pipeDataBuffer = buffer;
cdcAcmPipe->pipeDataLen = length;
return kStatus_USB_Success;
}
error = USB_DeviceSendRequest(cdcAcmHandle->handle, ep, buffer, length);
if (kStatus_USB_Success != error)
{
cdcAcmPipe->isBusy = 0U;
}
}
return error;
}
/*!
* @brief Prime the endpoint to receive packet from host.
*
* This function checks whether the endpoint is receiving packet, then it primes the endpoint
* with the buffer address and the buffer length if the pipe is not busy. Otherwise, it ignores this transfer by
* returning an error code.
*
* @param handle The class handle of the CDC ACM class.
* @param ep The endpoint number of the transfer.
* @param buffer The pointer to the buffer to be transferred.
* @param length The length of the buffer to be transferred.
* @return A USB error code or kStatus_USB_Success.
*/
usb_status_t USB_DeviceCdcAcmRecv(class_handle_t handle, uint8_t ep, uint8_t *buffer, uint32_t length)
{
usb_device_cdc_acm_struct_t *cdcAcmHandle;
usb_status_t error = kStatus_USB_Error;
if (!handle)
{
return kStatus_USB_InvalidHandle;
}
cdcAcmHandle = (usb_device_cdc_acm_struct_t *)handle;
if (1U == cdcAcmHandle->bulkOut.isBusy)
{
return kStatus_USB_Busy;
}
cdcAcmHandle->bulkOut.isBusy = 1U;
if (cdcAcmHandle->bulkOut.pipeStall)
{
cdcAcmHandle->bulkOut.pipeDataBuffer = buffer;
cdcAcmHandle->bulkOut.pipeDataLen = length;
return kStatus_USB_Success;
}
error = USB_DeviceRecvRequest(cdcAcmHandle->handle, ep, buffer, length);
if (kStatus_USB_Success != error)
{
cdcAcmHandle->bulkOut.isBusy = 0U;
}
return error;
}
#endif /* USB_DEVICE_CONFIG_CDC_ACM */
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