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