/*******************************************************************************
* Function Name: USBUART_DispatchMSCClassRqst
****************************************************************************//**
*
* \internal
* This routine dispatches MSC class requests.
*
* \return
* Status of request processing: handled or not handled.
*
* \globalvars
* USBUART_lunCount - stores number of LUN (logical units).
*
* \reentrant
* No.
*
*******************************************************************************/
uint8 USBUART_DispatchMSCClassRqst(void)
{
uint8 requestHandled = USBUART_FALSE;
/* Get request data. */
uint16 value = USBUART_GET_UINT16(USBUART_wValueHiReg, USBUART_wValueLoReg);
uint16 dataLength = USBUART_GET_UINT16(USBUART_wLengthHiReg, USBUART_wLengthLoReg);
/* Check request direction: D2H or H2D. */
if (0u != (USBUART_bmRequestTypeReg & USBUART_RQST_DIR_D2H))
{
/* Handle direction from device to host. */
if (USBUART_MSC_GET_MAX_LUN == USBUART_bRequestReg)
{
/* Check request fields. */
if ((value == USBUART_MSC_GET_MAX_LUN_WVALUE) &&
(dataLength == USBUART_MSC_GET_MAX_LUN_WLENGTH))
{
/* Reply to Get Max LUN request: setup control read. */
USBUART_currentTD.pData = &USBUART_lunCount;
USBUART_currentTD.count = USBUART_MSC_GET_MAX_LUN_WLENGTH;
requestHandled = USBUART_InitControlRead();
}
}
}
else
{
/* Handle direction from host to device. */
if (USBUART_MSC_RESET == USBUART_bRequestReg)
{
/* Check request fields. */
if ((value == USBUART_MSC_RESET_WVALUE) &&
(dataLength == USBUART_MSC_RESET_WLENGTH))
{
/* Handle to Bulk-Only Reset request: no data control transfer. */
USBUART_currentTD.count = USBUART_MSC_RESET_WLENGTH;
#ifdef USBUART_DISPATCH_MSC_CLASS_MSC_RESET_RQST_CALLBACK
USBUART_DispatchMSCClass_MSC_RESET_RQST_Callback();
#endif /* (USBUART_DISPATCH_MSC_CLASS_MSC_RESET_RQST_CALLBACK) */
requestHandled = USBUART_InitNoDataControlTransfer();
}
}
}
return (requestHandled);
}
/*******************************************************************************
* Function Name: USBUART_DispatchHIDClassRqst
********************************************************************************
*
* Summary:
* This routine dispatches class requests
*
* Parameters:
* None.
*
* Return:
* requestHandled
*
* Reentrant:
* No.
*
*******************************************************************************/
uint8 USBUART_DispatchHIDClassRqst(void)
{
uint8 requestHandled = USBUART_FALSE;
uint8 interfaceNumber;
interfaceNumber = CY_GET_REG8(USBUART_wIndexLo);
if ((CY_GET_REG8(USBUART_bmRequestType) & USBUART_RQST_DIR_MASK) == USBUART_RQST_DIR_D2H)
{ /* Control Read */
switch (CY_GET_REG8(USBUART_bRequest))
{
case USBUART_GET_DESCRIPTOR:
if (CY_GET_REG8(USBUART_wValueHi) == USBUART_DESCR_HID_CLASS)
{
USBUART_FindHidClassDecriptor();
if (USBUART_currentTD.count != 0u)
{
requestHandled = USBUART_InitControlRead();
}
}
else if (CY_GET_REG8(USBUART_wValueHi) == USBUART_DESCR_HID_REPORT)
{
USBUART_FindReportDescriptor();
if (USBUART_currentTD.count != 0u)
{
requestHandled = USBUART_InitControlRead();
}
}
else
{ /* requestHandled is initialezed as FALSE by default */
}
break;
case USBUART_HID_GET_REPORT:
USBUART_FindReport();
if (USBUART_currentTD.count != 0u)
{
requestHandled = USBUART_InitControlRead();
}
break;
case USBUART_HID_GET_IDLE:
/* This function does not support multiple reports per interface*/
/* Validate interfaceNumber and Report ID (should be 0) */
if( (interfaceNumber < USBUART_MAX_INTERFACES_NUMBER) &&
(CY_GET_REG8(USBUART_wValueLo) == 0u ) ) /* Do not support Idle per Report ID */
{
USBUART_currentTD.count = 1u;
USBUART_currentTD.pData = &USBUART_hidIdleRate[interfaceNumber];
requestHandled = USBUART_InitControlRead();
}
break;
case USBUART_HID_GET_PROTOCOL:
/* Validate interfaceNumber */
if( interfaceNumber < USBUART_MAX_INTERFACES_NUMBER)
{
USBUART_currentTD.count = 1u;
USBUART_currentTD.pData = &USBUART_hidProtocol[interfaceNumber];
requestHandled = USBUART_InitControlRead();
}
break;
default: /* requestHandled is initialized as FALSE by default */
break;
}
}
else if ((CY_GET_REG8(USBUART_bmRequestType) & USBUART_RQST_DIR_MASK) ==
USBUART_RQST_DIR_H2D)
{ /* Control Write */
switch (CY_GET_REG8(USBUART_bRequest))
{
case USBUART_HID_SET_REPORT:
USBUART_FindReport();
if (USBUART_currentTD.count != 0u)
{
requestHandled = USBUART_InitControlWrite();
}
break;
case USBUART_HID_SET_IDLE:
/* This function does not support multiple reports per interface */
/* Validate interfaceNumber and Report ID (should be 0) */
if( (interfaceNumber < USBUART_MAX_INTERFACES_NUMBER) &&
(CY_GET_REG8(USBUART_wValueLo) == 0u ) ) /* Do not support Idle per Report ID */
{
USBUART_hidIdleRate[interfaceNumber] = CY_GET_REG8(USBUART_wValueHi);
/* With regards to HID spec: "7.2.4 Set_Idle Request"
* Latency. If the current period has gone past the
* newly proscribed time duration, then a report
* will be generated immediately.
*/
if(USBUART_hidIdleRate[interfaceNumber] <
USBUART_hidIdleTimer[interfaceNumber])
{
/* Set the timer to zero and let the UpdateHIDTimer() API return IDLE_TIMER_EXPIRED status*/
USBUART_hidIdleTimer[interfaceNumber] = 0u;
}
/* If the new request is received within 4 milliseconds
* (1 count) of the end of the current period, then the
* new request will have no effect until after the report.
*/
else if(USBUART_hidIdleTimer[interfaceNumber] <= 1u)
{
/* Do nothing.
* Let the UpdateHIDTimer() API continue to work and
* return IDLE_TIMER_EXPIRED status
*/
}
else
{ /* Reload the timer*/
USBUART_hidIdleTimer[interfaceNumber] =
USBUART_hidIdleRate[interfaceNumber];
}
requestHandled = USBUART_InitNoDataControlTransfer();
}
break;
case USBUART_HID_SET_PROTOCOL:
/* Validate interfaceNumber and protocol (must be 0 or 1) */
if( (interfaceNumber < USBUART_MAX_INTERFACES_NUMBER) &&
(CY_GET_REG8(USBUART_wValueLo) <= 1u) )
{
USBUART_hidProtocol[interfaceNumber] = CY_GET_REG8(USBUART_wValueLo);
requestHandled = USBUART_InitNoDataControlTransfer();
}
break;
default: /* requestHandled is initialized as FALSE by default */
break;
}
}
else
{ /* requestHandled is initialized as FALSE by default */
}
return(requestHandled);
}
/*******************************************************************************
* Function Name: USBUART_DispatchCDCClassRqst
****************************************************************************//**
*
* This routine dispatches CDC class requests.
*
* \return
* requestHandled
*
* \globalvars
* USBUART_linesCoding: Contains the current line coding structure.
* It is set by the Host using SET_LINE_CODING request and returned to the
* user code by the USBFS_GetDTERate(), USBFS_GetCharFormat(),
* USBFS_GetParityType(), USBFS_GetDataBits() APIs.
* USBUART_linesControlBitmap: Contains the current control signal
* bitmap. It is set by the Host using SET_CONTROL_LINE request and returned
* to the user code by the USBFS_GetLineControl() API.
* USBUART_linesChanged: This variable is used as a flag for the
* USBFS_IsLineChanged() API, to be aware that Host has been sent request
* for changing Line Coding or Control Bitmap.
*
* \reentrant
* No.
*
*******************************************************************************/
uint8 USBUART_DispatchCDCClassRqst(void)
{
uint8 requestHandled = USBUART_FALSE;
uint8 comPort;
comPort = USBUART_GetInterfaceComPort((uint8)USBUART_wIndexLoReg);
/* Check request direction: D2H or H2D. */
if (0u != (USBUART_bmRequestTypeReg & USBUART_RQST_DIR_D2H))
{
/* Handle direction from device to host. */
switch (USBUART_bRequestReg)
{
case USBUART_CDC_GET_LINE_CODING:
USBUART_currentTD.count = USBUART_LINE_CODING_SIZE;
USBUART_currentTD.pData = USBUART_linesCoding[comPort];
requestHandled = USBUART_InitControlRead();
break;
/* `#START CDC_READ_REQUESTS` Place other request handler here */
/* `#END` */
default:
/* Do not handle this request unless callback is defined. */
#ifdef USBUART_DISPATCH_CDC_CLASS_CDC_READ_REQUESTS_CALLBACK
requestHandled = USBUART_DispatchCDCClass_CDC_READ_REQUESTS_Callback();
#endif /* (USBUART_DISPATCH_CDC_CLASS_CDC_READ_REQUESTS_CALLBACK) */
break;
}
}
else
{
/* Handle direction from host to device. */
switch (USBUART_bRequestReg)
{
case USBUART_CDC_SET_LINE_CODING:
USBUART_currentTD.count = USBUART_LINE_CODING_SIZE;
USBUART_currentTD.pData = USBUART_linesCoding[comPort];
USBUART_linesChanged[comPort] |= USBUART_LINE_CODING_CHANGED;
requestHandled = USBUART_InitControlWrite();
break;
case USBUART_CDC_SET_CONTROL_LINE_STATE:
USBUART_linesControlBitmap[comPort] = (uint8) USBUART_wValueLoReg;
USBUART_linesChanged[comPort] |= USBUART_LINE_CONTROL_CHANGED;
requestHandled = USBUART_InitNoDataControlTransfer();
break;
/* `#START CDC_WRITE_REQUESTS` Place other request handler here */
/* `#END` */
default:
/* Do not handle this request unless callback is defined. */
#ifdef USBUART_DISPATCH_CDC_CLASS_CDC_WRITE_REQUESTS_CALLBACK
requestHandled = USBUART_DispatchCDCClass_CDC_WRITE_REQUESTS_Callback();
#endif /* (USBUART_DISPATCH_CDC_CLASS_CDC_WRITE_REQUESTS_CALLBACK) */
break;
}
}
return(requestHandled);
}
