/*******************************************************************************
* Function Name: USBUART_DispatchAUDIOClassRqst
****************************************************************************//**
*
* This routine dispatches class requests
*
* \return
* Results of Audio Class request handling:
* - USBUART_TRUE - request was handled without errors
* - USBUART_FALSE - error occurs during handling of request
*
* \globalvars
* USBUART_currentSampleFrequency: Contains the current audio Sample
* Frequency. It is set by the Host using SET_CUR request to the endpoint.
* USBUART_frequencyChanged: This variable is used as a flag for the
* user code, to be aware that Host has been sent request for changing
* Sample Frequency. Sample frequency will be sent on the next OUT
* transaction. It is contains endpoint address when set. The following
* code is recommended for detecting new Sample Frequency in main code:
*
* \snippet /USBFS_sut_02.cydsn/main.c Detecting new Sample Frequency
*
* USBUART_transferState variable is checked to be sure that transfer
* completes.
* USBUART_currentMute: Contains mute configuration set by Host.
* USBUART_currentVolume: Contains volume level set by Host.
*
* \reentrant
* No.
*
*******************************************************************************/
uint8 USBUART_DispatchAUDIOClassRqst(void)
{
uint8 requestHandled = USBUART_FALSE;
uint8 RqstRcpt = (uint8)(USBUART_bmRequestTypeReg & USBUART_RQST_RCPT_MASK);
#if defined(USBUART_ENABLE_AUDIO_STREAMING)
uint8 wValueHi = (uint8) USBUART_wValueHiReg;
uint8 epNumber = (uint8) USBUART_wIndexLoReg & USBUART_DIR_UNUSED;
#endif /* (USBUART_ENABLE_AUDIO_STREAMING) */
/* Check request direction: D2H or H2D. */
if (0u != (USBUART_bmRequestTypeReg & USBUART_RQST_DIR_D2H))
{
/* Handle direction from device to host. */
if (USBUART_RQST_RCPT_EP == RqstRcpt)
{
/* Request recipient is to endpoint. */
switch (USBUART_bRequestReg)
{
case USBUART_GET_CUR:
#if defined(USBUART_ENABLE_AUDIO_STREAMING)
if (wValueHi == USBUART_SAMPLING_FREQ_CONTROL)
{
/* point Control Selector is Sampling Frequency */
USBUART_currentTD.wCount = USBUART_SAMPLE_FREQ_LEN;
USBUART_currentTD.pData = USBUART_currentSampleFrequency[epNumber];
requestHandled = USBUART_InitControlRead();
}
#endif /* (USBUART_ENABLE_AUDIO_STREAMING) */
/* `#START AUDIO_READ_REQUESTS` Place other request handler here */
/* `#END` */
#ifdef USBUART_DISPATCH_AUDIO_CLASS_AUDIO_READ_REQUESTS_CALLBACK
USBUART_DispatchAUDIOClass_AUDIO_READ_REQUESTS_Callback();
#endif /* (USBUART_DISPATCH_AUDIO_CLASS_AUDIO_READ_REQUESTS_CALLBACK) */
break;
default:
/* Do not handle this request unless callback is defined. */
break;
}
}
else if (USBUART_RQST_RCPT_IFC == RqstRcpt)
{
/* Request recipient is interface or entity ID. */
switch (USBUART_bRequestReg)
{
case USBUART_GET_CUR:
#if defined(USBUART_ENABLE_AUDIO_STREAMING)
if (wValueHi == USBUART_MUTE_CONTROL)
{
/* `#START MUTE_CONTROL_GET_REQUEST` Place multi-channel handler here */
/* `#END` */
#ifdef USBUART_DISPATCH_AUDIO_CLASS_MUTE_CONTROL_GET_REQUEST_CALLBACK
USBUART_DispatchAUDIOClass_MUTE_CONTROL_GET_REQUEST_Callback();
#endif /* (USBUART_DISPATCH_AUDIO_CLASS_MUTE_CONTROL_GET_REQUEST_CALLBACK) */
/* Entity ID Control Selector is MUTE */
USBUART_currentTD.wCount = 1u;
USBUART_currentTD.pData = &USBUART_currentMute;
requestHandled = USBUART_InitControlRead();
}
else if (wValueHi == USBUART_VOLUME_CONTROL)
{
/* `#START VOLUME_CONTROL_GET_REQUEST` Place multi-channel handler here */
/* `#END` */
#ifdef USBUART_DISPATCH_AUDIO_CLASS_VOLUME_CONTROL_GET_REQUEST_CALLBACK
USBUART_DispatchAUDIOClass_VOLUME_CONTROL_GET_REQUEST_Callback();
#endif /* (USBUART_DISPATCH_AUDIO_CLASS_VOLUME_CONTROL_GET_REQUEST_CALLBACK) */
/* Entity ID Control Selector is VOLUME, */
USBUART_currentTD.wCount = USBUART_VOLUME_LEN;
USBUART_currentTD.pData = USBUART_currentVolume;
requestHandled = USBUART_InitControlRead();
}
else
{
/* `#START OTHER_GET_CUR_REQUESTS` Place other request handler here */
/* `#END` */
#ifdef USBUART_DISPATCH_AUDIO_CLASS_OTHER_GET_CUR_REQUESTS_CALLBACK
USBUART_DispatchAUDIOClass_OTHER_GET_CUR_REQUESTS_Callback();
#endif /* (USBUART_DISPATCH_AUDIO_CLASS_OTHER_GET_CUR_REQUESTS_CALLBACK) */
}
break;
case USBUART_GET_MIN:
if (wValueHi == USBUART_VOLUME_CONTROL)
{
/* Entity ID Control Selector is VOLUME, */
USBUART_currentTD.wCount = USBUART_VOLUME_LEN;
USBUART_currentTD.pData = &USBUART_minimumVolume[0];
requestHandled = USBUART_InitControlRead();
}
break;
case USBUART_GET_MAX:
if (wValueHi == USBUART_VOLUME_CONTROL)
{
/* Entity ID Control Selector is VOLUME, */
USBUART_currentTD.wCount = USBUART_VOLUME_LEN;
USBUART_currentTD.pData = &USBUART_maximumVolume[0];
requestHandled = USBUART_InitControlRead();
}
break;
case USBUART_GET_RES:
if (wValueHi == USBUART_VOLUME_CONTROL)
{
/* Entity ID Control Selector is VOLUME, */
USBUART_currentTD.wCount = USBUART_VOLUME_LEN;
USBUART_currentTD.pData = &USBUART_resolutionVolume[0];
requestHandled = USBUART_InitControlRead();
}
break;
/* The contents of the status message is reserved for future use.
* For the time being, a null packet should be returned in the data stage of the
* control transfer, and the received null packet should be ACKed.
*/
case USBUART_GET_STAT:
USBUART_currentTD.wCount = 0u;
requestHandled = USBUART_InitControlWrite();
#endif /* (USBUART_ENABLE_AUDIO_STREAMING) */
/* `#START AUDIO_WRITE_REQUESTS` Place other request handler here */
/* `#END` */
#ifdef USBUART_DISPATCH_AUDIO_CLASS_AUDIO_WRITE_REQUESTS_CALLBACK
USBUART_DispatchAUDIOClass_AUDIO_WRITE_REQUESTS_Callback();
#endif /* (USBUART_DISPATCH_AUDIO_CLASS_AUDIO_WRITE_REQUESTS_CALLBACK) */
break;
default:
/* Do not handle this request. */
break;
}
}
else
{
/* Do not handle other requests recipients. */
}
}
else
{
/* Handle direction from host to device. */
if (USBUART_RQST_RCPT_EP == RqstRcpt)
{
/* Request recipient is endpoint. */
switch (USBUART_bRequestReg)
{
case USBUART_SET_CUR:
#if defined(USBUART_ENABLE_AUDIO_STREAMING)
if (wValueHi == USBUART_SAMPLING_FREQ_CONTROL)
{
/* point Control Selector is Sampling Frequency */
USBUART_currentTD.wCount = USBUART_SAMPLE_FREQ_LEN;
USBUART_currentTD.pData = USBUART_currentSampleFrequency[epNumber];
USBUART_frequencyChanged = (uint8) epNumber;
requestHandled = USBUART_InitControlWrite();
}
#endif /* (USBUART_ENABLE_AUDIO_STREAMING) */
/* `#START AUDIO_SAMPLING_FREQ_REQUESTS` Place other request handler here */
/* `#END` */
#ifdef USBUART_DISPATCH_AUDIO_CLASS_AUDIO_SAMPLING_FREQ_REQUESTS_CALLBACK
USBUART_DispatchAUDIOClass_AUDIO_SAMPLING_FREQ_REQUESTS_Callback();
#endif /* (USBUART_DISPATCH_AUDIO_CLASS_AUDIO_SAMPLING_FREQ_REQUESTS_CALLBACK) */
break;
default:
/* Do not handle this request. */
break;
}
}
else if(USBUART_RQST_RCPT_IFC == RqstRcpt)
{
/* Request recipient is interface or entity ID. */
switch (USBUART_bRequestReg)
{
case USBUART_SET_CUR:
#if defined(USBUART_ENABLE_AUDIO_STREAMING)
if (wValueHi == USBUART_MUTE_CONTROL)
{
/* `#START MUTE_SET_REQUEST` Place multi-channel handler here */
/* `#END` */
#ifdef USBUART_DISPATCH_AUDIO_CLASS_MUTE_SET_REQUEST_CALLBACK
USBUART_DispatchAUDIOClass_MUTE_SET_REQUEST_Callback();
#endif /* (USBUART_DISPATCH_AUDIO_CLASS_MUTE_SET_REQUEST_CALLBACK) */
/* Entity ID Control Selector is MUTE */
USBUART_currentTD.wCount = 1u;
USBUART_currentTD.pData = &USBUART_currentMute;
requestHandled = USBUART_InitControlWrite();
}
else if (wValueHi == USBUART_VOLUME_CONTROL)
{
/* `#START VOLUME_CONTROL_SET_REQUEST` Place multi-channel handler here */
/* `#END` */
#ifdef USBUART_DISPATCH_AUDIO_CLASS_VOLUME_CONTROL_SET_REQUEST_CALLBACK
USBUART_DispatchAUDIOClass_VOLUME_CONTROL_SET_REQUEST_Callback();
#endif /* (USBUART_DISPATCH_AUDIO_CLASS_VOLUME_CONTROL_SET_REQUEST_CALLBACK) */
/* Entity ID Control Selector is VOLUME */
USBUART_currentTD.wCount = USBUART_VOLUME_LEN;
USBUART_currentTD.pData = USBUART_currentVolume;
requestHandled = USBUART_InitControlWrite();
}
else
{
/* `#START OTHER_SET_CUR_REQUESTS` Place other request handler here */
/* `#END` */
#ifdef USBUART_DISPATCH_AUDIO_CLASS_OTHER_SET_CUR_REQUESTS_CALLBACK
USBUART_DispatchAUDIOClass_OTHER_SET_CUR_REQUESTS_Callback();
#endif /* (USBUART_DISPATCH_AUDIO_CLASS_OTHER_SET_CUR_REQUESTS_CALLBACK) */
}
#endif /* USBUART_ENABLE_AUDIO_STREAMING */
/* `#START AUDIO_CONTROL_SEL_REQUESTS` Place other request handler here */
/* `#END` */
#ifdef USBUART_DISPATCH_AUDIO_CLASS_AUDIO_CONTROL_SEL_REQUESTS_CALLBACK
USBUART_DispatchAUDIOClass_AUDIO_CONTROL_SEL_REQUESTS_Callback();
#endif /* (USBUART_DISPATCH_AUDIO_CLASS_AUDIO_CONTROL_SEL_REQUESTS_CALLBACK) */
break;
default:
/* Do not handle this request. */
break;
}
}
else
{
/* Do not handle other requests recipients. */
}
}
return (requestHandled);
}
/*******************************************************************************
* Function Name: USBUART_DispatchAUDIOClassRqst
********************************************************************************
*
* Summary:
* This routine dispatches class requests
*
* Parameters:
* None.
*
* Return:
* requestHandled
*
* Global variables:
* USBUART_currentSampleFrequency: Contains the current audio Sample
* Frequency. It is set by the Host using SET_CUR request to the endpoint.
* USBUART_frequencyChanged: This variable is used as a flag for the
* user code, to be aware that Host has been sent request for changing
* Sample Frequency. Sample frequency will be sent on the next OUT
* transaction. It is contains endpoint address when set. The following
* code is recommended for detecting new Sample Frequency in main code:
* if((USBUART_frequencyChanged != 0) &&
* (USBUART_transferState == USBUART_TRANS_STATE_IDLE))
* {
* USBUART_frequencyChanged = 0;
* }
* USBUART_transferState variable is checked to be sure that
* transfer completes.
* USBUART_currentMute: Contains mute configuration set by Host.
* USBUART_currentVolume: Contains volume level set by Host.
*
* Reentrant:
* No.
*
*******************************************************************************/
uint8 USBUART_DispatchAUDIOClassRqst(void)
{
uint8 requestHandled = USBUART_FALSE;
uint8 bmRequestType = CY_GET_REG8(USBUART_bmRequestType);
#if defined(USBUART_ENABLE_AUDIO_STREAMING)
uint8 epNumber;
epNumber = CY_GET_REG8(USBUART_wIndexLo) & USBUART_DIR_UNUSED;
#endif /* USBUART_ENABLE_AUDIO_STREAMING */
if ((bmRequestType & USBUART_RQST_DIR_MASK) == USBUART_RQST_DIR_D2H)
{
/* Control Read */
if((bmRequestType & USBUART_RQST_RCPT_MASK) == USBUART_RQST_RCPT_EP)
{
/* Endpoint */
switch (CY_GET_REG8(USBUART_bRequest))
{
case USBUART_GET_CUR:
#if defined(USBUART_ENABLE_AUDIO_STREAMING)
if(CY_GET_REG8(USBUART_wValueHi) == USBUART_SAMPLING_FREQ_CONTROL)
{
/* point Control Selector is Sampling Frequency */
USBUART_currentTD.wCount = USBUART_SAMPLE_FREQ_LEN;
USBUART_currentTD.pData = USBUART_currentSampleFrequency[epNumber];
requestHandled = USBUART_InitControlRead();
}
#endif /* USBUART_ENABLE_AUDIO_STREAMING */
/* `#START AUDIO_READ_REQUESTS` Place other request handler here */
/* `#END` */
#ifdef USBUART_DISPATCH_AUDIO_CLASS_AUDIO_READ_REQUESTS_CALLBACK
USBUART_DispatchAUDIOClass_AUDIO_READ_REQUESTS_Callback();
#endif /* USBUART_DISPATCH_AUDIO_CLASS_AUDIO_READ_REQUESTS_CALLBACK */
break;
default:
break;
}
}
else if((bmRequestType & USBUART_RQST_RCPT_MASK) == USBUART_RQST_RCPT_IFC)
{
/* Interface or Entity ID */
switch (CY_GET_REG8(USBUART_bRequest))
{
case USBUART_GET_CUR:
#if defined(USBUART_ENABLE_AUDIO_STREAMING)
if(CY_GET_REG8(USBUART_wValueHi) == USBUART_MUTE_CONTROL)
{
/* `#START MUTE_CONTROL_GET_REQUEST` Place multi-channel handler here */
/* `#END` */
#ifdef USBUART_DISPATCH_AUDIO_CLASS_MUTE_CONTROL_GET_REQUEST_CALLBACK
USBUART_DispatchAUDIOClass_MUTE_CONTROL_GET_REQUEST_Callback();
#endif /* USBUART_DISPATCH_AUDIO_CLASS_MUTE_CONTROL_GET_REQUEST_CALLBACK */
/* Entity ID Control Selector is MUTE */
USBUART_currentTD.wCount = 1u;
USBUART_currentTD.pData = &USBUART_currentMute;
requestHandled = USBUART_InitControlRead();
}
else if(CY_GET_REG8(USBUART_wValueHi) == USBUART_VOLUME_CONTROL)
{
/* `#START VOLUME_CONTROL_GET_REQUEST` Place multi-channel handler here */
/* `#END` */
#ifdef USBUART_DISPATCH_AUDIO_CLASS_VOLUME_CONTROL_GET_REQUEST_CALLBACK
USBUART_DispatchAUDIOClass_VOLUME_CONTROL_GET_REQUEST_Callback();
#endif /* USBUART_DISPATCH_AUDIO_CLASS_VOLUME_CONTROL_GET_REQUEST_CALLBACK */
/* Entity ID Control Selector is VOLUME, */
USBUART_currentTD.wCount = USBUART_VOLUME_LEN;
USBUART_currentTD.pData = USBUART_currentVolume;
requestHandled = USBUART_InitControlRead();
}
else
{
/* `#START OTHER_GET_CUR_REQUESTS` Place other request handler here */
/* `#END` */
#ifdef USBUART_DISPATCH_AUDIO_CLASS_OTHER_GET_CUR_REQUESTS_CALLBACK
USBUART_DispatchAUDIOClass_OTHER_GET_CUR_REQUESTS_Callback();
#endif /* USBUART_DISPATCH_AUDIO_CLASS_OTHER_GET_CUR_REQUESTS_CALLBACK */
}
break;
case USBUART_GET_MIN: /* GET_MIN */
if(CY_GET_REG8(USBUART_wValueHi) == USBUART_VOLUME_CONTROL)
{
/* Entity ID Control Selector is VOLUME, */
USBUART_currentTD.wCount = USBUART_VOLUME_LEN;
USBUART_currentTD.pData = &USBUART_minimumVolume[0];
requestHandled = USBUART_InitControlRead();
}
break;
case USBUART_GET_MAX: /* GET_MAX */
if(CY_GET_REG8(USBUART_wValueHi) == USBUART_VOLUME_CONTROL)
{
/* Entity ID Control Selector is VOLUME, */
USBUART_currentTD.wCount = USBUART_VOLUME_LEN;
USBUART_currentTD.pData = &USBUART_maximumVolume[0];
requestHandled = USBUART_InitControlRead();
}
break;
case USBUART_GET_RES: /* GET_RES */
if(CY_GET_REG8(USBUART_wValueHi) == USBUART_VOLUME_CONTROL)
{
/* Entity ID Control Selector is VOLUME, */
USBUART_currentTD.wCount = USBUART_VOLUME_LEN;
USBUART_currentTD.pData = &USBUART_resolutionVolume[0];
requestHandled = USBUART_InitControlRead();
}
break;
/* The contents of the status message is reserved for future use.
* For the time being, a null packet should be returned in the data stage of the
* control transfer, and the received null packet should be ACKed.
*/
case USBUART_GET_STAT:
USBUART_currentTD.wCount = 0u;
requestHandled = USBUART_InitControlWrite();
#endif /* USBUART_ENABLE_AUDIO_STREAMING */
/* `#START AUDIO_WRITE_REQUESTS` Place other request handler here */
/* `#END` */
#ifdef USBUART_DISPATCH_AUDIO_CLASS_AUDIO_WRITE_REQUESTS_CALLBACK
USBUART_DispatchAUDIOClass_AUDIO_WRITE_REQUESTS_Callback();
#endif /* USBUART_DISPATCH_AUDIO_CLASS_AUDIO_WRITE_REQUESTS_CALLBACK */
break;
default:
break;
}
}
else
{ /* USBUART_RQST_RCPT_OTHER */
}
}
else
{
/* Control Write */
if((bmRequestType & USBUART_RQST_RCPT_MASK) == USBUART_RQST_RCPT_EP)
{
/* point */
switch (CY_GET_REG8(USBUART_bRequest))
{
case USBUART_SET_CUR:
#if defined(USBUART_ENABLE_AUDIO_STREAMING)
if(CY_GET_REG8(USBUART_wValueHi) == USBUART_SAMPLING_FREQ_CONTROL)
{
/* point Control Selector is Sampling Frequency */
USBUART_currentTD.wCount = USBUART_SAMPLE_FREQ_LEN;
USBUART_currentTD.pData = USBUART_currentSampleFrequency[epNumber];
requestHandled = USBUART_InitControlWrite();
USBUART_frequencyChanged = epNumber;
}
#endif /* USBUART_ENABLE_AUDIO_STREAMING */
/* `#START AUDIO_SAMPLING_FREQ_REQUESTS` Place other request handler here */
/* `#END` */
#ifdef USBUART_DISPATCH_AUDIO_CLASS_AUDIO_SAMPLING_FREQ_REQUESTS_CALLBACK
USBUART_DispatchAUDIOClass_AUDIO_SAMPLING_FREQ_REQUESTS_Callback();
#endif /* USBUART_DISPATCH_AUDIO_CLASS_AUDIO_SAMPLING_FREQ_REQUESTS_CALLBACK */
break;
default:
break;
}
}
else if((bmRequestType & USBUART_RQST_RCPT_MASK) == USBUART_RQST_RCPT_IFC)
{
/* Interface or Entity ID */
switch (CY_GET_REG8(USBUART_bRequest))
{
case USBUART_SET_CUR:
#if defined(USBUART_ENABLE_AUDIO_STREAMING)
if(CY_GET_REG8(USBUART_wValueHi) == USBUART_MUTE_CONTROL)
{
/* `#START MUTE_SET_REQUEST` Place multi-channel handler here */
/* `#END` */
#ifdef USBUART_DISPATCH_AUDIO_CLASS_MUTE_SET_REQUEST_CALLBACK
USBUART_DispatchAUDIOClass_MUTE_SET_REQUEST_Callback();
#endif /* USBUART_DISPATCH_AUDIO_CLASS_MUTE_SET_REQUEST_CALLBACK */
/* Entity ID Control Selector is MUTE */
USBUART_currentTD.wCount = 1u;
USBUART_currentTD.pData = &USBUART_currentMute;
requestHandled = USBUART_InitControlWrite();
}
else if(CY_GET_REG8(USBUART_wValueHi) == USBUART_VOLUME_CONTROL)
{
/* `#START VOLUME_CONTROL_SET_REQUEST` Place multi-channel handler here */
/* `#END` */
#ifdef USBUART_DISPATCH_AUDIO_CLASS_VOLUME_CONTROL_SET_REQUEST_CALLBACK
USBUART_DispatchAUDIOClass_VOLUME_CONTROL_SET_REQUEST_Callback();
#endif /* USBUART_DISPATCH_AUDIO_CLASS_VOLUME_CONTROL_SET_REQUEST_CALLBACK */
/* Entity ID Control Selector is VOLUME */
USBUART_currentTD.wCount = USBUART_VOLUME_LEN;
USBUART_currentTD.pData = USBUART_currentVolume;
requestHandled = USBUART_InitControlWrite();
}
else
{
/* `#START OTHER_SET_CUR_REQUESTS` Place other request handler here */
/* `#END` */
#ifdef USBUART_DISPATCH_AUDIO_CLASS_OTHER_SET_CUR_REQUESTS_CALLBACK
USBUART_DispatchAUDIOClass_OTHER_SET_CUR_REQUESTS_Callback();
#endif /* USBUART_DISPATCH_AUDIO_CLASS_OTHER_SET_CUR_REQUESTS_CALLBACK */
}
#endif /* USBUART_ENABLE_AUDIO_STREAMING */
/* `#START AUDIO_CONTROL_SEL_REQUESTS` Place other request handler here */
/* `#END` */
#ifdef USBUART_DISPATCH_AUDIO_CLASS_AUDIO_CONTROL_SEL_REQUESTS_CALLBACK
USBUART_DispatchAUDIOClass_AUDIO_CONTROL_SEL_REQUESTS_Callback();
#endif /* USBUART_DISPATCH_AUDIO_CLASS_AUDIO_CONTROL_SEL_REQUESTS_CALLBACK */
break;
default:
break;
}
}
else
{
/* USBUART_RQST_RCPT_OTHER */
}
}
return(requestHandled);
}
