322 lines
12 KiB
C
322 lines
12 KiB
C
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/******************************************************************************
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* Copyright (C) 2019, Huada Semiconductor Co.,Ltd All rights reserved.
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*
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* This software is owned and published by:
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* Huada Semiconductor Co.,Ltd ("HDSC").
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*
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* BY DOWNLOADING, INSTALLING OR USING THIS SOFTWARE, YOU AGREE TO BE BOUND
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* BY ALL THE TERMS AND CONDITIONS OF THIS AGREEMENT.
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*
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* This software contains source code for use with HDSC
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* components. This software is licensed by HDSC to be adapted only
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* for use in systems utilizing HDSC components. HDSC shall not be
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* responsible for misuse or illegal use of this software for devices not
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* supported herein. HDSC is providing this software "AS IS" and will
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* not be responsible for issues arising from incorrect user implementation
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* of the software.
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*
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* Disclaimer:
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* HDSC MAKES NO WARRANTY, EXPRESS OR IMPLIED, ARISING BY LAW OR OTHERWISE,
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* REGARDING THE SOFTWARE (INCLUDING ANY ACOOMPANYING WRITTEN MATERIALS),
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* ITS PERFORMANCE OR SUITABILITY FOR YOUR INTENDED USE, INCLUDING,
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* WITHOUT LIMITATION, THE IMPLIED WARRANTY OF MERCHANTABILITY, THE IMPLIED
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* WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE OR USE, AND THE IMPLIED
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* WARRANTY OF NONINFRINGEMENT.
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* HDSC SHALL HAVE NO LIABILITY (WHETHER IN CONTRACT, WARRANTY, TORT,
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* NEGLIGENCE OR OTHERWISE) FOR ANY DAMAGES WHATSOEVER (INCLUDING, WITHOUT
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* LIMITATION, DAMAGES FOR LOSS OF BUSINESS PROFITS, BUSINESS INTERRUPTION,
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* LOSS OF BUSINESS INFORMATION, OR OTHER PECUNIARY LOSS) ARISING FROM USE OR
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* INABILITY TO USE THE SOFTWARE, INCLUDING, WITHOUT LIMITATION, ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES OR LOSS OF DATA,
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* SAVINGS OR PROFITS,
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* EVEN IF Disclaimer HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
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* YOU ASSUME ALL RESPONSIBILITIES FOR SELECTION OF THE SOFTWARE TO ACHIEVE YOUR
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* INTENDED RESULTS, AND FOR THE INSTALLATION OF, USE OF, AND RESULTS OBTAINED
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* FROM, THE SOFTWARE.
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*
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* This software may be replicated in part or whole for the licensed use,
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* with the restriction that this Disclaimer and Copyright notice must be
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* included with each copy of this software, whether used in part or whole,
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* at all times.
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*/
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/******************************************************************************/
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/** \file i2s.c
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**
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** I2S driver API.
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**
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** - 2019-07-05 lsq First Version
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**
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******************************************************************************/
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/******************************************************************************
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* Include files
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******************************************************************************/
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#include "i2s.h"
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/**
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******************************************************************************
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** \addtogroup AdcGroup
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******************************************************************************/
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//@{
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/******************************************************************************
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* Local pre-processor symbols/macros ('#define')
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******************************************************************************/
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/******************************************************************************
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* Global variable definitions (declared in header file with 'extern')
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******************************************************************************/
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/******************************************************************************
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* Local type definitions ('typedef')
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******************************************************************************/
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/******************************************************************************
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* Local function prototypes ('static')
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******************************************************************************/
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/******************************************************************************
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* Local variable definitions ('static')
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******************************************************************************/
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/*****************************************************************************
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* Function implementation - global ('extern') and local ('static')
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*****************************************************************************/
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/**
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******************************************************************************
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* @brief 使能I2Sx相关的中断
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* @param i2sx: M0P_I2S0或者M0P_I2S1
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* @param i2s_it: 为以下值
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* @arg I2S_IT_TXE: 发送缓冲区空中断使能位
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* @arg I2S_IT_RXNEIE:接收缓冲区空中断使能位
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* @arg I2S_IT_ERRIE: 错误中断使能位
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* @param NewState: =ENALE 或 DISABLE
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* @retval None
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**
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******************************************************************************/
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void I2S_ConfIt(M0P_I2S_TypeDef *i2sx, uint8_t i2s_it, en_en_state_t NewState)
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{
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uint32_t itmark=0;
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itmark=1<<i2s_it;
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if(NewState == ENABLE) //使能中断
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{
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i2sx->CR |= itmark;
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}
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else if(NewState == DISABLE) //禁止中断
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{
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i2sx->CR &= ~itmark;
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}
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else
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{
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;
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}
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}
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/**
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******************************************************************************
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** \brief I2S左右声道缓冲区DMA数据发送使能配置
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**
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* @param i2sx: M0P_I2S0或者M0P_I2S1
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* @param i2s_it: 为以下值
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* @arg I2S_RDMA_EN: 右声道缓冲区DMA数据发送使能位
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* @arg I2S_LDMA_EN: 左声道缓冲区DMA数据发送使能位
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* @param NewState: =ENALE 或 DISABLE
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** \retval none
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**
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******************************************************************************/
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void I2s_ConfDma(M0P_I2S_TypeDef *i2sx, uint8_t rl_dma_en, en_en_state_t NewState)
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{
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uint32_t itmark=0;
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itmark = 1<<rl_dma_en;
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if(NewState == ENABLE) //使能左声道或右声道DMA
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{
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i2sx->CR |= itmark;
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}
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else if(NewState == DISABLE) //禁止左声道或右声道DMA
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{
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i2sx->CR &= ~itmark;
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}
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else
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{
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;
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}
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}
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/**
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******************************************************************************
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** \brief I2S状态标志位状态获取
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**
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* @param i2sx: M0P_I2S0或者M0P_I2S1
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* @param i2s_status: 为以下值
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* @arg I2S_RXNE_L: 左声道接收缓冲区非空标志
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* @arg I2S_TXE_L: 左声道发送缓冲区空标志
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* @arg I2S_UDR_L: 左声道下溢标志
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* @arg I2S_UDR_R: 右声道下溢标志
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* @arg I2S_OVR_L: 左声道上溢标志
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* @arg I2S_BSY: 忙标志
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* @arg I2S_FRE: 帧错误标志
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* @arg I2S_OVR_R: 右声道上溢标志
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* @arg I2S_RXNE_R: 右声道接收缓冲区非空标志
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* @arg I2S_TXE_R: 右声道发送缓冲区空标志
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** \retval 状态标志位状态 RESET 和 SET
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**
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******************************************************************************/
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en_flag_status_t I2s_GetStatus(M0P_I2S_TypeDef *i2sx, uint8_t i2s_status)
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{
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uint16_t itmark=0;
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en_flag_status_t bitstatus;
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itmark=(uint16_t)1<<i2s_status;
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if(!(i2sx->SR & itmark))
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{
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bitstatus = RESET;
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}
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else
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{
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bitstatus = SET;
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}
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return bitstatus;
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}
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/**
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******************************************************************************
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** \brief I2S中断状态标志位清零
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**
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* @param i2sx: M0P_I2S0或者M0P_I2S1
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* @param i2s_status: 为以下值
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* @arg I2S_FLAG_UDF: 下溢中断标志位
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* @arg I2S_FLAG_OVR: 上溢中断标志位
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* @arg I2S_FLAG_FRE: 帧错误标志位
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** \retval none
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**
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******************************************************************************/
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void I2s_ClearITPendingBit(M0P_I2S_TypeDef *i2sx, uint8_t i2s_it_flag)
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{
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uint32_t bitstatus;
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bitstatus = 1<<i2s_it_flag;
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i2sx->ICR &= ~bitstatus;
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}
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/**
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******************************************************************************
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** \brief 向左声道数据寄存器DRL写入要发送的数据
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**
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* @param i2sx: M0P_I2S0或者M0P_I2S1
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* @param Data: 要发送的16位数据
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** \retval none
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**
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******************************************************************************/
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void I2s_SendDataL(M0P_I2S_TypeDef *i2sx, uint16_t Data)
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{
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i2sx->DRL_f.DRL = Data;
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}
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/**
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******************************************************************************
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** \brief 向右声道数据寄存器DRR写入要发送的数据
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**
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* @param i2sx: M0P_I2S0或者M0P_I2S1
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* @param Data: 要发送的16位数据
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** \retval none
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**
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******************************************************************************/
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void I2s_SendDataR(M0P_I2S_TypeDef *i2sx, uint16_t Data)
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{
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i2sx->DRR_f.DRR = Data;
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}
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/**
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******************************************************************************
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** \brief 从左声道数据寄存器DRL读取所接收的数据
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**
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* @param i2sx: M0P_I2S0或者M0P_I2S1
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** \retval 所读取的数据
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**
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******************************************************************************/
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uint16_t I2s_ReceiveDataL(M0P_I2S_TypeDef *i2sx)
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{
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uint16_t data;
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data = (uint16_t)i2sx->DRL;
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return data;
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}
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/**
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******************************************************************************
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** \brief 从右声道数据寄存器DRR读取所接收的数据
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**
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* @param i2sx: M0P_I2S0或者M0P_I2S1
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** \retval 所读取的数据
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**
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******************************************************************************/
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uint16_t I2s_ReceiveDataR(M0P_I2S_TypeDef *i2sx)
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{
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uint16_t data;
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data = (uint16_t)i2sx->DRR;
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return data;
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}
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/**
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******************************************************************************
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** \brief 初始化I2Sx配置
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** (一)小数分频FRACT=0:
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** (1)输出主时钟(MCKOE=1)
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** 通道帧宽度位16位，采样率=主频I2SxCLK/[(16*2)*(2*I2SDIV+ODD)*8]
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** 通道帧宽度位32位，采样率=主频I2SxCLK/[(32*2)*(2*I2SDIV+ODD)*4]
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** (2)禁止主时钟(MCKOE=0)
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** 通道帧宽度位16位，采样率=主频I2SxCLK/[(16*2)*(2*I2SDIV+ODD)]
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** 通道帧宽度位32位，采样率=主频I2SxCLK/[(32*2)*(2*I2SDIV+ODD)]
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** (二)小数分频FRACT=0:
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** (1)输出主时钟(MCKOE=1)
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** 通道帧宽度位16位，采样率=主频I2SxCLK/[(16*2)*(2*(I2SDIV+FRACT/64))*8]
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** 通道帧宽度位32位，采样率=主频I2SxCLK/[(32*2)*(2*(I2SDIV+FRACT/64))*4]
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** (2)输出主时钟(MCKOE=0)
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** 通道帧宽度位16位，采样率=主频I2SxCLK/[(16*2)*(2*(I2SDIV+FRACT/64))]
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** 通道帧宽度位32位，采样率=主频I2SxCLK/[(32*2)*(2*(I2SDIV+FRACT/64))]
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** I2SDIV、FRACT和I2SODD按照以上的计算公式根据实际情况设置数值
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* @param i2sx: M0P_I2S0或者M0P_I2S1
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* @param i2s_conf ：配置参数
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** \retval 无
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**
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******************************************************************************/
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void I2s_Init(M0P_I2S_TypeDef *i2sx, stc_i2s_config_t *i2s_conf)
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{
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i2sx->CFGR_f.CFG = i2s_conf->i2s_Mode; //设置模式
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i2sx->CFGR_f.PCMSYNC = i2s_conf->i2s_PcmSync; //PCM帧同步位， 只有在I2SSTD=3的情况下该位才有意义
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i2sx->CFGR_f.CKSEL = i2s_conf->i2s_Cksel; //主模式下I2S始终选择：0：PCLK 1:HCLK
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i2sx->CFGR_f.STD = i2s_conf->i2s_Std; //标准选择 0：I2S Philips 1:MAS左对齐 2：LSB右对齐 3：PCM标准
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i2sx->CFGR_f.DATLEN = i2s_conf->i2s_Datalen; //要传输的数据长度
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i2sx->CFGR_f.CHIEN = i2s_conf->i2s_Chlen; //每个音频通道的位数，0：16位 1：32位
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i2sx->PR_f.MCKOE = i2s_conf->i2s_Mckoe; //主时钟MCK输出使能
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i2sx->PR_f.I2SDIV = i2s_conf->i2s_Div;
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i2sx->PR_f.FRACT = i2s_conf->i2s_Fract;
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i2sx->PR_f.ODD = i2s_conf->i2s_Odd;
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}
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/**
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******************************************************************************
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** \brief 使能或者禁止I2Sx
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**
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* @param i2sx: M0P_I2S0或者M0P_I2S1
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**
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* @param NewState :EANBLE 或者DISABLE
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** \retval 无
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**
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******************************************************************************/
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void I2S_Cmd(M0P_I2S_TypeDef *i2sx, en_en_state_t NewState)
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{
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i2sx->CFGR_f.E = NewState;
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}
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/******************************************************************************
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* EOF (not truncated)
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******************************************************************************/
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