MXC-A36-Demo/MCU/components/drivers/peripheral/Src/driver_spdif.c

/*
  ******************************************************************************
  * @file    driver_spdif.c
  * @author  FreqChip Firmware Team
  * @version V1.0.0
  * @date    2023
  * @brief   SPDIF module driver.
  *          This file provides firmware functions to manage the 
  *          SPDIF peripheral
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2023 FreqChip.
  * All rights reserved.
  ******************************************************************************
*/
#include "fr30xx.h"

/******************************************************************************
 * @fn      SPDIF_IRQHandler
 *
 * @brief   spdif handle function in spdif isr
 *
 * @param   hspdif : spdif handle
 */
void SPDIF_IRQHandler(SPDIF_HandleTypeDef *hspdif)
{
    if(__SPDIF_IS_INT_ALEMPTY())
    {
        if((__SPDIF_GET_INT_STATUS() & ALEMPTY_FLAG))
        {                                                       
            while(__SPDIF_GET_INT_STATUS() & FULL_FLAG)
            {
               SPDIF->SPDIF_FIFO_DATA =  hspdif->p_TxData[ hspdif->u32_TxCount++];
               
                if(hspdif->u32_TxCount >= hspdif->u32_TxSize)
                {
                    __SPDIF_DISABLE_ALEMPTY_INT();
                    
                    hspdif->b_TxBusy = false; 
                    
                    if(hspdif->TxCallback)
                    {
                        hspdif->TxCallback(hspdif);  
                    }
                    
                    break;
                }  
            }            
        } 
    }
    
    if(__SPDIF_IS_INT_ALFULL())
    {
        if(__SPDIF_GET_INT_STATUS() & ALFULL_FLAG)
        {
            while(!(__SPDIF_GET_INT_STATUS() & EMPTY_FLAG))
            {
               hspdif->p_RxData[hspdif->u32_RxCount++] = SPDIF->SPDIF_FIFO_DATA;
            }            
            
        }   
    }

    if(__SPDIF_IS_INT_SYNCERR())
    {
        if(__SPDIF_GET_INT_STATUS() & SYNCERR_FLAG)
        {
            while(!(__SPDIF_GET_INT_STATUS() & EMPTY_FLAG))
            {
               hspdif->p_RxData[hspdif->u32_RxCount++] = SPDIF->SPDIF_FIFO_DATA;
            }
            
            hspdif->b_RxBusy = false; 
            __SPDIF_DISABLE_ALFULL_INT();
            
            if(hspdif->RxCallback)
            {
                hspdif->RxCallback(hspdif);
            } 
        }  
    }
}

/******************************************************************************
 * @fn      spdif_init
 *
 * @brief   Initialize the SPDIF according to the specified parameters
 *          in the SPDIF_HandleTypeDef 
 *
 * @param   hspdif : spdif handle
 */
void spdif_init(SPDIF_HandleTypeDef *hspdif)
{
    SPDIF->SPDIF_CTRL.TSAMPLERATE        = hspdif->Init.TxSampleRate;
    SPDIF->SPDIF_CTRL.CHANNEL_MODE       = hspdif->Init.CH_Mode;
    
    SPDIF->SPDIF_CTRL.CLK_ENABLE   = 0;
    SPDIF->SPDIF_CTRL.FIFO_ENABLE  = 1;
    SPDIF->SPDIF_CTRL.SFR_ENABLE   = 1;
    SPDIF->SPDIF_CTRL.PARITYGEN    = 1;
    
    SPDIF->SPDIF_CTRL.DUPLICATE    = 1;
    SPDIF->SPDIF_CTRL.SETPREAMBB   = 1;
    SPDIF->SPDIF_CTRL.INTREQ_MASK  = 1;
    
    __SPDIF_FIFO_HALF_FULL_LEVEL(hspdif->Init.HALFIFOFull_Threshold);
    __SPDIF_FIFO_ALMOST_EMPTY_LEVEL(hspdif->Init.ALFIFOEmpty_Threshold);
}

/******************************************************************************
 * @fn      spdif_msg_send
 *
 * @brief   spdif send message
 *
 * @param   hspdif : spdif handle
 *          fp_Data : send data pointer
 *          fu32_Size : send data size
 */
bool spdif_msg_send(SPDIF_HandleTypeDef *hspdif, uint32_t *fp_Data, uint32_t fu32_Size)
{
    
    if (fu32_Size == 0)  return false;
    if (hspdif->b_TxBusy)  return false;
    if (hspdif->b_RxBusy)  return false;

    __SPDIF_DISABLE();
    
    hspdif->b_TxBusy = 1;
    
    __SPDIF_Tx_MODE();
    __SPDIF_ENABLE();
    
    while(fu32_Size)
    {
        while(__SPDIF_GET_INT_STATUS() & FULL_FLAG); 
        SPDIF->SPDIF_FIFO_DATA = *fp_Data++;
        fu32_Size--;
    }
    
    while(!(__SPDIF_GET_INT_STATUS() & UNDERR_FLAG));     
    
    hspdif->b_TxBusy = 0;
    
    return true;
}

/******************************************************************************
 * @fn      spdif_msg_receive
 *
 * @brief   spdif receive message
 *
 * @param   hspdif : spdif handle
 *          fp_Data : the receive data buffer
 */
bool spdif_msg_receive(SPDIF_HandleTypeDef *hspdif, uint32_t *fp_Data)
{
    if (hspdif->b_TxBusy)  return false;
    if (hspdif->b_RxBusy)  return false;

    __SPDIF_DISABLE();    
    
    hspdif->b_RxBusy = 1;    
    
    __SPDIF_Rx_MODE();
    __SPDIF_ENABLE();

    while(1)
    {
        if(!(__SPDIF_GET_INT_STATUS() & EMPTY_FLAG))
        {
            *fp_Data++ = SPDIF->SPDIF_FIFO_DATA;
            
        }
        
        if(__SPDIF_GET_INT_STATUS() & SYNCERR_FLAG)
        {
            break;
        }
        
    }
    
    hspdif->b_RxBusy = 0;
    
    return true;
}

/******************************************************************************
 * @fn      spdif_msg_send_IT
 *
 * @brief   spdif send message with isr
 *
 * @param   hspdif : spdif handle
 *          fp_Data : send data pointer
 *          fu32_Size : send data size
 */
bool spdif_msg_send_IT(SPDIF_HandleTypeDef *hspdif, uint32_t *fp_Data, uint32_t fu32_Size)
{  
    if (fu32_Size == 0)    return false;
    if (hspdif->b_TxBusy)  return false;
    if (hspdif->b_RxBusy)  return false;


    hspdif->u32_TxSize  = fu32_Size;
    hspdif->u32_TxCount = 0;
    hspdif->p_TxData    = fp_Data;
    hspdif->b_TxBusy    = 1;    
    
    __SPDIF_Tx_MODE();
    __SPDIF_ENABLE(); 

    __SPDIF_ENABLE_ALEMPTY_INT();
    
    return true;
}

/******************************************************************************
 * @fn      spdif_msg_receive_IT
 *
 * @brief   spdif receive message with isr
 *
 * @param   hspdif : spdif handle
 *          fp_Data : the receive data buffer
 */
bool spdif_msg_receive_IT(SPDIF_HandleTypeDef *hspdif, uint32_t *fp_Data)
{
    if (hspdif->b_TxBusy)  return false;
    if (hspdif->b_RxBusy)  return false;

    hspdif->p_RxData    = fp_Data;
    hspdif->b_RxBusy    = 1;
    hspdif->u32_RxCount = 0;
    
    __SPDIF_Tx_MODE();
    __SPDIF_ENABLE(); 
    
    __SPDIF_ENABLE_ALFULL_INT();  

    return true;    
}