464 lines
13 KiB
C
464 lines
13 KiB
C
|
/**************************************************************************//**
|
||
|
|
* @file i2s.c
|
||
|
|
* @version V1.00
|
||
|
|
* $Revision: 4 $
|
||
|
|
* $Date: 18/08/05 2:12p $
|
||
|
|
* @brief I2S driver source file
|
||
|
|
*
|
||
|
|
* @note
|
||
|
|
* SPDX-License-Identifier: Apache-2.0
|
||
|
|
* Copyright (C) 2018 Nuvoton Technology Corp. All rights reserved.
|
||
|
|
*****************************************************************************/
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
#include "nuc980.h"
|
||
|
|
#include "nu_sys.h"
|
||
|
|
#include "nu_i2s.h"
|
||
|
|
|
||
|
|
/** @addtogroup Standard_Driver Standard Driver
|
||
|
|
@{
|
||
|
|
*/
|
||
|
|
|
||
|
|
/** @addtogroup I2S_Driver I2S Driver
|
||
|
|
@{
|
||
|
|
*/
|
||
|
|
|
||
|
|
/** @addtogroup I2S_EXPORTED_CONSTANTS I2S Exported Constants
|
||
|
|
@{
|
||
|
|
*/
|
||
|
|
|
||
|
|
/// @cond HIDDEN_SYMBOLS
|
||
|
|
|
||
|
|
typedef uint32_t (AU_CB_FUNC_T)(uint32_t);
|
||
|
|
|
||
|
|
static AU_CB_FUNC_T *g_fnPlayCallBack;
|
||
|
|
static AU_CB_FUNC_T *g_fnRecCallBack;
|
||
|
|
static uint8_t i2sOpened = 0;
|
||
|
|
|
||
|
|
/// @endcond /* HIDDEN_SYMBOLS */
|
||
|
|
|
||
|
|
/*@}*/ /* end of group ARM9_I2S_EXPORTED_CONSTANTS */
|
||
|
|
|
||
|
|
/** @addtogroup ARM9_I2S_EXPORTED_FUNCTIONS I2S Exported Functions
|
||
|
|
@{
|
||
|
|
*/
|
||
|
|
|
||
|
|
/// @cond HIDDEN_SYMBOLS
|
||
|
|
/**
|
||
|
|
* @brief Start to play
|
||
|
|
* @param None
|
||
|
|
* @return None
|
||
|
|
*/
|
||
|
|
static void i2sStartPlay(void)
|
||
|
|
{
|
||
|
|
/* start playing */
|
||
|
|
printf("IIS start playing...\n");
|
||
|
|
|
||
|
|
outpw(REG_I2S_PSR, 0x1);
|
||
|
|
outpw(REG_I2S_RESET, inpw(REG_I2S_RESET) | (1 << 5));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Stop to play
|
||
|
|
* @param None
|
||
|
|
* @return None
|
||
|
|
*/
|
||
|
|
static void i2sStopPlay(void)
|
||
|
|
{
|
||
|
|
printf("IIS stop playing\n");
|
||
|
|
|
||
|
|
/* stop playing */
|
||
|
|
outpw(REG_I2S_RESET, inpw(REG_I2S_RESET) & ~(1 << 5));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Start to record
|
||
|
|
* @param None
|
||
|
|
* @return None
|
||
|
|
*/
|
||
|
|
static void i2sStartRecord(void)
|
||
|
|
{
|
||
|
|
/* start recording */
|
||
|
|
printf("IIS start recording...\n");
|
||
|
|
|
||
|
|
outpw(REG_I2S_RSR, 0x1);
|
||
|
|
outpw(REG_I2S_RESET, inpw(REG_I2S_RESET) | (1 << 6));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Stop to record
|
||
|
|
* @param None
|
||
|
|
* @return None
|
||
|
|
*/
|
||
|
|
static void i2sStopRecord(void)
|
||
|
|
{
|
||
|
|
printf("I2S stop recording\n");
|
||
|
|
|
||
|
|
/* stop recording */
|
||
|
|
outpw(REG_I2S_RESET, inpw(REG_I2S_RESET) & ~(1 << 6));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Delay function
|
||
|
|
* @param None
|
||
|
|
* @return None
|
||
|
|
*/
|
||
|
|
static void Delay(int nCnt)
|
||
|
|
{
|
||
|
|
int volatile loop;
|
||
|
|
for (loop = 0; loop < nCnt * 10; loop++);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Interrupt service routine for i2s
|
||
|
|
* @param None
|
||
|
|
* @return None
|
||
|
|
*/
|
||
|
|
static void i2sISR(void)
|
||
|
|
{
|
||
|
|
uint8_t u8SN;
|
||
|
|
|
||
|
|
if (inpw(REG_I2S_CON) & (1 << 10))
|
||
|
|
{
|
||
|
|
outpw(REG_I2S_CON, inpw(REG_I2S_CON) | (1 << 10)); //Clear TX INT
|
||
|
|
|
||
|
|
if (inpw(REG_I2S_PSR) & (1 << 4))
|
||
|
|
{
|
||
|
|
outpw(REG_I2S_PSR, (1 << 4));
|
||
|
|
printf("\ndebug:DMA_COUNTER_IRQ occur");
|
||
|
|
}
|
||
|
|
|
||
|
|
if (inpw(REG_I2S_PSR) & (1 << 3))
|
||
|
|
{
|
||
|
|
outpw(REG_I2S_PSR, (1 << 3));
|
||
|
|
printf("\ndebug:DMA_DATA_ZERO_IRQ occur");
|
||
|
|
}
|
||
|
|
|
||
|
|
if (inpw(REG_I2S_PSR) & 0x1)
|
||
|
|
{
|
||
|
|
outpw(REG_I2S_PSR, 0x1);
|
||
|
|
u8SN = (inpw(REG_I2S_PSR) >> 5) & 0x7;
|
||
|
|
g_fnPlayCallBack(u8SN);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (inpw(REG_I2S_CON) & (1 << 11))
|
||
|
|
{
|
||
|
|
outpw(REG_I2S_CON, inpw(REG_I2S_CON) | (1 << 11)); //Clear RX INT
|
||
|
|
|
||
|
|
if (inpw(REG_I2S_RSR) & 0x1)
|
||
|
|
{
|
||
|
|
outpw(REG_I2S_RSR, 0x1);
|
||
|
|
u8SN = (inpw(REG_I2S_RSR) >> 5) & 0x7;
|
||
|
|
g_fnRecCallBack(u8SN);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/// @endcond /* HIDDEN_SYMBOLS */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Open i2s interface
|
||
|
|
* @return open status
|
||
|
|
* @retval I2S_ERR_BUSY error.
|
||
|
|
* @retval 0 success.
|
||
|
|
*/
|
||
|
|
int32_t i2sOpen(void)
|
||
|
|
{
|
||
|
|
if (i2sOpened)
|
||
|
|
return I2S_ERR_BUSY;
|
||
|
|
|
||
|
|
/* reset audio interface */
|
||
|
|
outpw(REG_I2S_RESET, inpw(REG_I2S_RESET) | (1 << 16));
|
||
|
|
Delay(100);
|
||
|
|
outpw(REG_I2S_RESET, inpw(REG_I2S_RESET) & ~(1 << 16));
|
||
|
|
Delay(100);
|
||
|
|
|
||
|
|
/* reset IIS interface */
|
||
|
|
outpw(REG_I2S_RESET, inpw(REG_I2S_RESET) | 0x1);
|
||
|
|
Delay(100);
|
||
|
|
outpw(REG_I2S_RESET, inpw(REG_I2S_RESET) & ~0x1);
|
||
|
|
Delay(100);
|
||
|
|
|
||
|
|
outpw(REG_I2S_CON, inpw(REG_I2S_CON) | (1 << 21) | (1 << 20));
|
||
|
|
|
||
|
|
i2sOpened = 1;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Close i2s interface
|
||
|
|
* @return None
|
||
|
|
*/
|
||
|
|
void i2sClose(void)
|
||
|
|
{
|
||
|
|
// reset some variables
|
||
|
|
i2sOpened = 0;
|
||
|
|
g_fnPlayCallBack = NULL;
|
||
|
|
g_fnRecCallBack = NULL;
|
||
|
|
|
||
|
|
// reset i2s interface
|
||
|
|
outpw(REG_SYS_AHBIPRST, inpw(REG_SYS_AHBIPRST) | (1 << 8));
|
||
|
|
outpw(REG_SYS_AHBIPRST, inpw(REG_SYS_AHBIPRST) & ~(1 << 8));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Initialize i2s interface and setup interrupt
|
||
|
|
* @return None
|
||
|
|
*/
|
||
|
|
void i2sInit(void)
|
||
|
|
{
|
||
|
|
// enable i2s engine clock
|
||
|
|
outpw(REG_CLK_HCLKEN, inpw(REG_CLK_HCLKEN) | (1 << 24));
|
||
|
|
|
||
|
|
// enable interrupt and set ISR
|
||
|
|
sysInstallISR(IRQ_LEVEL_1, IRQ_I2S, (PVOID)i2sISR);
|
||
|
|
sysEnableInterrupt(IRQ_I2S);
|
||
|
|
sysSetLocalInterrupt(ENABLE_IRQ);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief IO control for i2s interface
|
||
|
|
* @param[in] cmd command for io control, value could be
|
||
|
|
* - \ref I2S_SET_PLAY
|
||
|
|
* - \ref I2S_SET_RECORD
|
||
|
|
* - \ref I2S_SELECT_BLOCK
|
||
|
|
* - \ref I2S_SELECT_BIT
|
||
|
|
* - \ref I2S_SET_PLAY_DMA_INT_SEL
|
||
|
|
* - \ref I2S_SET_REC_DMA_INT_SEL
|
||
|
|
* - \ref I2S_SET_ZEROCROSS
|
||
|
|
* - \ref I2S_SET_DMACOUNTER
|
||
|
|
* - \ref I2S_SET_CHANNEL
|
||
|
|
* - \ref I2S_SET_MODE
|
||
|
|
* - \ref I2S_SET_SPLITDATA
|
||
|
|
* - \ref I2S_SET_DMA_ADDRESS
|
||
|
|
* - \ref I2S_SET_DMA_LENGTH
|
||
|
|
* - \ref I2S_GET_DMA_CUR_ADDRESS
|
||
|
|
* - \ref I2S_SET_I2S_FORMAT
|
||
|
|
* - \ref I2S_SET_I2S_CALLBACKFUN
|
||
|
|
* - \ref I2S_SET_PCMSLOT
|
||
|
|
* @param[in] arg0 argument 0 for io control
|
||
|
|
* @param[in] arg1 argument 1 for io control
|
||
|
|
* @retval I2S_ERR_IO error.
|
||
|
|
* @retval 0 success.
|
||
|
|
*/
|
||
|
|
int32_t i2sIoctl(uint32_t cmd, uint32_t arg0, uint32_t arg1)
|
||
|
|
{
|
||
|
|
uint32_t *buf;
|
||
|
|
AU_CB_FUNC_T *ptr;
|
||
|
|
|
||
|
|
switch (cmd)
|
||
|
|
{
|
||
|
|
// #define I2S_START_PLAY 0
|
||
|
|
// #define I2S_STOP_PLAY 1
|
||
|
|
case I2S_SET_PLAY:
|
||
|
|
if (arg0 == I2S_START_PLAY)
|
||
|
|
i2sStartPlay();
|
||
|
|
else
|
||
|
|
i2sStopPlay();
|
||
|
|
break;
|
||
|
|
// #define I2S_START_REC 0
|
||
|
|
// #define I2S_STOP_REC 1
|
||
|
|
case I2S_SET_RECORD:
|
||
|
|
if (arg0 == I2S_START_REC)
|
||
|
|
i2sStartRecord();
|
||
|
|
else
|
||
|
|
i2sStopRecord();
|
||
|
|
break;
|
||
|
|
// #define I2S_BLOCK_I2S 0
|
||
|
|
// #define I2S_BLOCK_PCM 1
|
||
|
|
case I2S_SELECT_BLOCK:
|
||
|
|
if (arg0 == I2S_BLOCK_I2S)
|
||
|
|
outpw(REG_I2S_CON, (inpw(REG_I2S_CON) & ~0x3) | 0x1);
|
||
|
|
else
|
||
|
|
outpw(REG_I2S_CON, (inpw(REG_I2S_CON) & ~0x3) | 0x2);
|
||
|
|
break;
|
||
|
|
// #define I2S_BIT_WIDTH_8 0
|
||
|
|
// #define I2S_BIT_WIDTH_16 1
|
||
|
|
// #define I2S_BIT_WIDTH_24 2
|
||
|
|
case I2S_SELECT_BIT:
|
||
|
|
outpw(REG_I2S_CON, (inpw(REG_I2S_CON) & ~0x300) | (arg0 << 8));
|
||
|
|
break;
|
||
|
|
// #define I2S_DMA_INT_END 0
|
||
|
|
// #define I2S_DMA_INT_HALF 1
|
||
|
|
// #define I2S_DMA_INT_QUARTER 2
|
||
|
|
// #define I2S_DMA_INT_EIGTH 3
|
||
|
|
case I2S_SET_PLAY_DMA_INT_SEL:
|
||
|
|
outpw(REG_I2S_CON, (inpw(REG_I2S_CON) & ~0x3000) | (arg0 << 12));
|
||
|
|
break;
|
||
|
|
|
||
|
|
case I2S_SET_REC_DMA_INT_SEL:
|
||
|
|
outpw(REG_I2S_CON, (inpw(REG_I2S_CON) & ~0xc000) | (arg0 << 14));
|
||
|
|
break;
|
||
|
|
|
||
|
|
case I2S_SET_ZEROCROSS:
|
||
|
|
if (arg0 == I2S_ENABLE)
|
||
|
|
outpw(REG_I2S_RESET, inpw(REG_I2S_RESET) | 0x8);
|
||
|
|
else
|
||
|
|
outpw(REG_I2S_RESET, inpw(REG_I2S_RESET) & ~0x8);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case I2S_SET_DMACOUNTER:
|
||
|
|
if (arg0 == I2S_ENABLE)
|
||
|
|
outpw(REG_I2S_RESET, inpw(REG_I2S_RESET) | 0x10);
|
||
|
|
else
|
||
|
|
outpw(REG_I2S_RESET, inpw(REG_I2S_RESET) & ~0x10);
|
||
|
|
break;
|
||
|
|
// #define I2S_CHANNEL_I2S_ONE 2
|
||
|
|
// #define I2S_CHANNEL_I2S_TWO 3
|
||
|
|
// #define I2S_CHANNEL_PCM_TWO 3
|
||
|
|
// #define I2S_CHANNEL_PCM_TWO_SLOT1 0
|
||
|
|
// #define I2S_CHANNEL_PCM_TWO_SLOT0 1
|
||
|
|
// #define I2S_CHANNEL_PCM_ONE_SLOT0 2
|
||
|
|
case I2S_SET_CHANNEL:
|
||
|
|
if (arg0 == I2S_PLAY)
|
||
|
|
outpw(REG_I2S_RESET, inpw(REG_I2S_RESET) & ~(0x3 << 12) | (arg1 << 12));
|
||
|
|
else
|
||
|
|
outpw(REG_I2S_RESET, inpw(REG_I2S_RESET) & ~(0x3 << 14) | (arg1 << 14));
|
||
|
|
break;
|
||
|
|
// #define I2S_MODE_MASTER 0
|
||
|
|
// #define I2S_MODE_SLAVE 1
|
||
|
|
case I2S_SET_MODE:
|
||
|
|
if (arg0 == I2S_MODE_MASTER)
|
||
|
|
outpw(REG_I2S_I2SCON, inpw(REG_I2S_I2SCON) & ~(0x1 << 20));
|
||
|
|
else
|
||
|
|
outpw(REG_I2S_I2SCON, inpw(REG_I2S_I2SCON) | (0x1 << 20));
|
||
|
|
break;
|
||
|
|
|
||
|
|
case I2S_SET_SPLITDATA:
|
||
|
|
if (arg0 == I2S_ENABLE)
|
||
|
|
outpw(REG_I2S_RESET, inpw(REG_I2S_RESET) | (0x1 << 20));
|
||
|
|
else
|
||
|
|
outpw(REG_I2S_RESET, inpw(REG_I2S_RESET) & ~(0x1 << 20));
|
||
|
|
break;
|
||
|
|
|
||
|
|
case I2S_SET_DMA_ADDRESS:
|
||
|
|
if (arg0 == I2S_PLAY)
|
||
|
|
outpw(REG_I2S_PDESB, arg1 | 0x80000000);
|
||
|
|
else if (arg0 == I2S_REC)
|
||
|
|
outpw(REG_I2S_RDESB, arg1 | 0x80000000);
|
||
|
|
else if (arg0 == PCM_PLAY)
|
||
|
|
outpw(REG_I2S_PDESB2, arg1 | 0x80000000);
|
||
|
|
else
|
||
|
|
outpw(REG_I2S_RDESB2, arg1 | 0x80000000);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case I2S_SET_DMA_LENGTH:
|
||
|
|
if (arg0 == I2S_PLAY)
|
||
|
|
outpw(REG_I2S_PDES_LENGTH, arg1);
|
||
|
|
else
|
||
|
|
outpw(REG_I2S_RDES_LENGTH, arg1);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case I2S_GET_DMA_CUR_ADDRESS:
|
||
|
|
buf = (uint32_t *)arg0;
|
||
|
|
if (arg0 == I2S_PLAY)
|
||
|
|
*buf = inpw(REG_I2S_PDESC);
|
||
|
|
else
|
||
|
|
*buf = inpw(REG_I2S_RDESC);
|
||
|
|
break;
|
||
|
|
|
||
|
|
// #define I2S_FORMAT_I2S 0
|
||
|
|
// #define I2S_FORMAT_MSB 1
|
||
|
|
case I2S_SET_I2S_FORMAT:
|
||
|
|
if (arg0 == I2S_FORMAT_I2S)
|
||
|
|
outpw(REG_I2S_I2SCON, inpw(REG_I2S_I2SCON) & ~ 0x8);
|
||
|
|
else
|
||
|
|
outpw(REG_I2S_I2SCON, inpw(REG_I2S_I2SCON) | 0x8);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case I2S_SET_I2S_CALLBACKFUN:
|
||
|
|
ptr = (AU_CB_FUNC_T *)arg1;
|
||
|
|
if (arg0 == I2S_PLAY)
|
||
|
|
g_fnPlayCallBack = ptr;
|
||
|
|
else
|
||
|
|
g_fnRecCallBack = ptr;
|
||
|
|
break;
|
||
|
|
// #define PCM_SLOT1_IN 0
|
||
|
|
// #define PCM_SLOT1_OUT 1
|
||
|
|
// #define PCM_SLOT2_IN 2
|
||
|
|
// #define PCM_SLOT2_OUT 3
|
||
|
|
case I2S_SET_PCMSLOT:
|
||
|
|
if (arg0 == PCM_SLOT1_IN)
|
||
|
|
outpw(REG_I2S_PCMS1ST, (inpw(REG_I2S_PCMS1ST) & ~0x3ff) | (arg1 & 0x3ff));
|
||
|
|
else if (arg0 == PCM_SLOT1_OUT)
|
||
|
|
outpw(REG_I2S_PCMS1ST, (inpw(REG_I2S_PCMS1ST) & ~0x3ff0000) | ((arg1 & 0x3ff) << 16));
|
||
|
|
else if (arg0 == PCM_SLOT2_IN)
|
||
|
|
outpw(REG_I2S_PCMS2ST, (inpw(REG_I2S_PCMS2ST) & ~0x3ff) | (arg1 & 0x3ff));
|
||
|
|
else
|
||
|
|
outpw(REG_I2S_PCMS2ST, (inpw(REG_I2S_PCMS2ST) & ~0x3ff0000) | ((arg1 & 0x3ff) << 16));
|
||
|
|
break;
|
||
|
|
|
||
|
|
case I2S_SET_PCM_FS_PERIOD:
|
||
|
|
outpw(REG_I2S_PCMCON, (inpw(REG_I2S_PCMCON) & ~0x03FF0000 | (((arg0 - 1) & 0x3ff) << 16)));
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
return I2S_ERR_IO;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Configure sampling rate for audio
|
||
|
|
* @param[in] u32SourceClockRate source speed to i2s interface
|
||
|
|
* @param[in] u32SampleRate sampling rate
|
||
|
|
* @param[in] u32DataBit data width
|
||
|
|
* @param[in] u32Channel channel number
|
||
|
|
* @return None
|
||
|
|
*/
|
||
|
|
void i2sSetSampleRate(uint32_t u32SourceClockRate, uint32_t u32SampleRate, uint32_t u32DataBit, uint32_t u32Channel)
|
||
|
|
{
|
||
|
|
uint32_t u32BCLKDiv;
|
||
|
|
uint32_t u32MCLK, u32MCLKDiv;
|
||
|
|
|
||
|
|
u32MCLK = (u32SampleRate * 256);
|
||
|
|
u32MCLKDiv = u32SourceClockRate / u32MCLK;
|
||
|
|
outpw(REG_I2S_I2SCON, (inpw(REG_I2S_I2SCON) & ~0x000F0000) | (u32MCLKDiv - 1) << 16);
|
||
|
|
|
||
|
|
u32BCLKDiv = u32MCLK / (u32SampleRate * u32DataBit * u32Channel);
|
||
|
|
u32BCLKDiv = u32BCLKDiv / 2 - 1;
|
||
|
|
outpw(REG_I2S_I2SCON, (inpw(REG_I2S_I2SCON) & ~0xF0) | u32BCLKDiv << 5);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Configure MCLK frequency (master mode)
|
||
|
|
* @param[in] u32SourceClockRate source clock rate
|
||
|
|
* @param[in] u32SampleRate sampling rate
|
||
|
|
* @return None
|
||
|
|
*/
|
||
|
|
void i2sSetMCLKFrequency(uint32_t u32SourceClockRate, uint32_t u32SampleRate)
|
||
|
|
{
|
||
|
|
uint32_t u32MCLK, u32MCLKDiv;
|
||
|
|
|
||
|
|
u32MCLK = (u32SampleRate * 256);
|
||
|
|
u32MCLKDiv = u32SourceClockRate / u32MCLK;
|
||
|
|
outpw(REG_I2S_I2SCON, (inpw(REG_I2S_I2SCON) & ~0x000F0000) | (u32MCLKDiv - 1) << 16);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Configure PCM BCLK frequency (master mode)
|
||
|
|
* @param[in] u32SourceClockRate source clock rate
|
||
|
|
* @param[in] u32Rate target rate
|
||
|
|
* @return None
|
||
|
|
*/
|
||
|
|
void i2sSetPCMBCLKFrequency(uint32_t u32SourceClockRate, uint32_t u32Rate)
|
||
|
|
{
|
||
|
|
uint32_t u32BCLKDiv;
|
||
|
|
|
||
|
|
u32BCLKDiv = (u32SourceClockRate / (2 * u32Rate)) - 1;
|
||
|
|
outpw(REG_I2S_PCMCON, (inpw(REG_I2S_PCMCON) & ~0x0000FF00) | (u32BCLKDiv << 8));
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*@}*/ /* end of group I2S_EXPORTED_FUNCTIONS */
|
||
|
|
|
||
|
|
/*@}*/ /* end of group I2S_Driver */
|
||
|
|
|
||
|
|
/*@}*/ /* end of group Standard_Driver */
|
||
|
|
|
||
|
|
/*** (C) COPYRIGHT 2018 Nuvoton Technology Corp. ***/
|
||
|
|
|