USB_DEVICE_CDC_EVENT_RESPONSE APP_USBDeviceCDCEventHandler
(
USB_DEVICE_CDC_INDEX index ,
USB_DEVICE_CDC_EVENT event ,
void * pData,
uintptr_t userData
)
{
APP2_DATA * app2DataObject;
app2DataObject = (APP2_DATA *)userData;
USB_CDC_CONTROL_LINE_STATE * controlLineStateData;
switch ( event )
{
case USB_DEVICE_CDC_EVENT_GET_LINE_CODING:
/* This means the host wants to know the current line
* coding. This is a control transfer request. Use the
* USB_DEVICE_ControlSend() function to send the data to
* host. */
USB_DEVICE_ControlSend(app2DataObject->deviceHandle,
&app2DataObject->getLineCodingData, sizeof(USB_CDC_LINE_CODING));
break;
case USB_DEVICE_CDC_EVENT_SET_LINE_CODING:
/* This means the host wants to set the line coding.
* This is a control transfer request. Use the
* USB_DEVICE_ControlReceive() function to receive the
* data from the host */
USB_DEVICE_ControlReceive(app2DataObject->deviceHandle,
&app2DataObject->setLineCodingData, sizeof(USB_CDC_LINE_CODING));
break;
case USB_DEVICE_CDC_EVENT_SET_CONTROL_LINE_STATE:
/* This means the host is setting the control line state.
* Read the control line state. We will accept this request
* for now. */
controlLineStateData = (USB_CDC_CONTROL_LINE_STATE *)pData;
app2DataObject->controlLineStateData.dtr = controlLineStateData->dtr;
app2DataObject->controlLineStateData.carrier = controlLineStateData->carrier;
USB_DEVICE_ControlStatus(app2DataObject->deviceHandle, USB_DEVICE_CONTROL_STATUS_OK);
break;
case USB_DEVICE_CDC_EVENT_SEND_BREAK:
/* This means that the host is requesting that a break of the
* specified duration be sent. Read the break duration */
app2DataObject->breakData = ((USB_DEVICE_CDC_EVENT_DATA_SEND_BREAK *)pData)->breakDuration;
/* Complete the control transfer by sending a ZLP */
USB_DEVICE_ControlStatus(app2DataObject->deviceHandle, USB_DEVICE_CONTROL_STATUS_OK);
break;
case USB_DEVICE_CDC_EVENT_READ_COMPLETE:
/* This means that the host has sent some data*/
//SYS_CONSOLE_MESSAGE("Read flag set\n");
app2DataObject->isReadComplete = true;
break;
case USB_DEVICE_CDC_EVENT_CONTROL_TRANSFER_DATA_RECEIVED:
/* The data stage of the last control transfer is
* complete. For now we accept all the data */
USB_DEVICE_ControlStatus(app2DataObject->deviceHandle, USB_DEVICE_CONTROL_STATUS_OK);
break;
case USB_DEVICE_CDC_EVENT_CONTROL_TRANSFER_DATA_SENT:
/* This means the GET LINE CODING function data is valid. We dont
* do much with this data in this demo. */
break;
case USB_DEVICE_CDC_EVENT_WRITE_COMPLETE:
/* This means that the data write got completed. We can schedule
* the next read. */
app2DataObject->isWriteComplete = true;
break;
default:
break;
}
return USB_DEVICE_CDC_EVENT_RESPONSE_NONE;
}
USB_DEVICE_CDC_EVENT_RESPONSE APP_USBDeviceCDCEventHandler
(
USB_DEVICE_CDC_INDEX index ,
USB_DEVICE_CDC_EVENT event ,
void* pData,
uintptr_t userData
)
{
APP_DATA * appDataObject;
appDataObject = (APP_DATA *)userData;
USB_CDC_CONTROL_LINE_STATE * controlLineStateData;
uint16_t * breakData;
switch ( event )
{
case USB_DEVICE_CDC_EVENT_GET_LINE_CODING:
/* This means the host wants to know the current line
* coding. This is a control transfer request. Use the
* USB_DEVICE_ControlSend() function to send the data to
* host. */
USB_DEVICE_ControlSend(appDataObject->deviceHandle,
&appDataObject->getLineCodingData, sizeof(USB_CDC_LINE_CODING));
break;
case USB_DEVICE_CDC_EVENT_SET_LINE_CODING:
/* This means the host wants to set the line coding.
* This is a control transfer request. Use the
* USB_DEVICE_ControlReceive() function to receive the
* data from the host */
USB_DEVICE_ControlReceive(appDataObject->deviceHandle,
&appDataObject->setLineCodingData, sizeof(USB_CDC_LINE_CODING));
break;
case USB_DEVICE_CDC_EVENT_SET_CONTROL_LINE_STATE:
/* This means the host is setting the control line state.
* Read the control line state. We will accept this request
* for now. */
controlLineStateData = (USB_CDC_CONTROL_LINE_STATE *)pData;
appDataObject->controlLineStateData.dtr = controlLineStateData->dtr;
appDataObject->controlLineStateData.carrier =
controlLineStateData->carrier;
USB_DEVICE_ControlStatus(appDataObject->deviceHandle, USB_DEVICE_CONTROL_STATUS_OK);
break;
case USB_DEVICE_CDC_EVENT_SEND_BREAK:
/* This means that the host is requesting that a break of the
* specified duration be sent. Read the break duration */
breakData = (uint16_t *)pData;
appDataObject->breakData = *breakData;
break;
case USB_DEVICE_CDC_EVENT_READ_COMPLETE:
/* This means that the host has sent some data*/
appDataObject->isReadComplete = true;
appDataObject->readLength =
((USB_DEVICE_CDC_EVENT_DATA_READ_COMPLETE*)pData)->length;
break;
case USB_DEVICE_CDC_EVENT_CONTROL_TRANSFER_DATA_RECEIVED:
/* The data stage of the last control transfer is
* complete. We have received the line coding from the host. Call
* the usart driver routine to change the baud. We can call this
* function here as it is not blocking. */
DRV_USART_BaudSet(appDataObject->usartHandle, appDataObject->setLineCodingData.dwDTERate);
USB_DEVICE_ControlStatus(appDataObject->deviceHandle, USB_DEVICE_CONTROL_STATUS_OK);
break;
case USB_DEVICE_CDC_EVENT_CONTROL_TRANSFER_DATA_SENT:
/* This means the GET LINE CODING function data is valid. We dont
* do much with this data in this demo. */
break;
case USB_DEVICE_CDC_EVENT_WRITE_COMPLETE:
/* This means that the data write got completed. We can schedule
* the next read. */
break;
default:
break;
}
return USB_DEVICE_CDC_EVENT_RESPONSE_NONE;
}
