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/**************************************************************************//**
* @file whc.c
* @brief WHC driver source file
*
* SPDX-License-Identifier: Apache-2.0
* @copyright (C) 2020 Nuvoton Technology Corp. All rights reserved.
*****************************************************************************/
#include "NuMicro.h"
/** @addtogroup Standard_Driver Standard Driver
@{
*/
/** @addtogroup WHC_Driver WHC Driver
@{
*/
/** @addtogroup WHC_EXPORTED_FUNCTIONS WHC Exported Functions
@{
*/
/**
* @brief Send message through a wormhole channel
* @param[in] whc The pointer of the specified WHC module.
* @param[in] u32Ch WHC channel, valid channel numbers are 0~3
* @param[in] pu32TxBuf The buffer holds the data to send
* @retval 0 Success
* @retval -1 Failed. Channel is busy, previous message hasn't been read yet.
*/
int WHC_Send(WHC_T *whc, uint32_t u32Ch, uint32_t *pu32TxBuf)
{
int i;
if (whc->TXSTS & (1ul << u32Ch))
{
for (i = 0; i < WHC_BUFFER_LEN; i++)
whc->TMDAT[u32Ch][i] = *pu32TxBuf++;
whc->TXCTL = (1ul << u32Ch);
}
else
{
return -1;
}
return 0;
}
/**
* @brief Receive message from a wormhole channel
* @param[in] whc The pointer of the specified WHC module.
* @param[in] u32Ch WHC channel, valid channel numbers are 0~3
* @param[out] pu32RxBuf The buffer to hold the receive data
* @retval 0 Success
* @retval -1 Failed. Channel is empty and no message is available for read.
* @Note This function send an ACK signal after receive complete
*/
int WHC_Recv(WHC_T *whc, uint32_t u32Ch, uint32_t *pu32RxBuf)
{
int i;
if (whc->RXSTS & (1ul << u32Ch))
{
for (i = 0; i < WHC_BUFFER_LEN; i++)
*pu32RxBuf++ = whc->RMDAT[u32Ch][i];
whc->RXCTL = (1ul << u32Ch);
}
else
{
return -1;
}
return 0;
}
/**
* @brief Get counter part status
* @param[in] whc The pointer of the specified WHC module.
* @param[in] u32Core Core number, valid channel numbers are 0~1
* @retval \ref WHC_RUN_MODE
* @retval \ref WHC_POFF_MODE
* @retval \ref WHC_PD_MODE
*/
int WHC_GetCPSts(WHC_T *whc, uint32_t u32Core)
{
if (u32Core == 0)
{
return (whc->CPSTS & WHC_CPSTS_OPMODE0_Msk) >> WHC_CPSTS_OPMODE0_Pos;
}
else
{
return (whc->CPSTS & WHC_CPSTS_OPMODE1_Msk) >> WHC_CPSTS_OPMODE1_Pos;
}
}
/*@}*/ /* end of group WHC_EXPORTED_FUNCTIONS */
/*@}*/ /* end of group WHC_Driver */
/*@}*/ /* end of group Standard_Driver */
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