/** ****************************************************************** * @file bsp_sai.c * @author fire * @version V1.0 * @date 2015-xx-xx * @brief 按键应用bsp（扫描模式） ****************************************************************** * @attention * * 实验平台:野火 STM32H750开发板 * 论坛 :http://www.firebbs.cn * 淘宝 :http://firestm32.taobao.com * ****************************************************************** */ #include "./sai/bsp_sai.h" #include "./Recorder/Recorder.h" SAI_HandleTypeDef h_sai; SAI_HandleTypeDef h_saib; DMA_HandleTypeDef h_txdma; //DMA发送句柄 DMA_HandleTypeDef h_rxdma; //DMA发送句柄 void (*SAI_DMA_TX_Callback)(void); /** * @brief SAI_MSP_Init * @param 无 * @retval 无 */ void SAI_GPIO_Config(void) { GPIO_InitTypeDef GPIO_InitStruct; //Msp Clock Init SAI_LRC_GPIO_CLK_ENABLE(); SAI_BCLK_GPIO_CLK_ENABLE(); SAI_SDA_GPIO_CLK_ENABLE(); SAI_MCLK_GPIO_CLK_ENABLE(); //SAI1_blockA GPIO_InitStruct.Pin = SAI_LRC_PIN; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; GPIO_InitStruct.Alternate = SAI_LRC_GPIO_AF; HAL_GPIO_Init(SAI_LRC_PORT, &GPIO_InitStruct); GPIO_InitStruct.Pin = GPIO_PIN_3; GPIO_InitStruct.Alternate = GPIO_AF6_SAI1; HAL_GPIO_Init(GPIOE, &GPIO_InitStruct); GPIO_InitStruct.Pin = SAI_BCLK_PIN; GPIO_InitStruct.Alternate = SAI_BCLK_GPIO_AF; HAL_GPIO_Init(SAI_BCLK_PORT, &GPIO_InitStruct); GPIO_InitStruct.Pin = SAI_SDA_PIN; GPIO_InitStruct.Alternate = SAI_SDA_GPIO_AF; HAL_GPIO_Init(SAI_SDA_PORT, &GPIO_InitStruct); GPIO_InitStruct.Pin = SAI_SAD_PIN; GPIO_InitStruct.Alternate = SAI_SDA_GPIO_AF; HAL_GPIO_Init(SAI_SAD_PORT, &GPIO_InitStruct); GPIO_InitStruct.Pin = SAI_MCLK_PIN; GPIO_InitStruct.Alternate = SAI_MCLK_GPIO_AF; HAL_GPIO_Init(SAI_MCLK_PORT, &GPIO_InitStruct); } void BSP_AUDIO_OUT_ClockConfig(uint32_t AudioFreq) { RCC_PeriphCLKInitTypeDef RCC_ExCLKInitStruct; RCC_ExCLKInitStruct.PeriphClockSelection=RCC_PERIPHCLK_SAI1; RCC_ExCLKInitStruct.Sai1ClockSelection=RCC_SAI1CLKSOURCE_PLL2; RCC_ExCLKInitStruct.PLL2.PLL2M=25; switch(AudioFreq) { case SAI_AUDIO_FREQUENCY_44K : { RCC_ExCLKInitStruct.PLL2.PLL2N=344; RCC_ExCLKInitStruct.PLL2.PLL2P=2; break; } default: while(1); } HAL_RCCEx_PeriphCLKConfig(&RCC_ExCLKInitStruct); } /** * @brief SAI_BlockA_Init * @param 无 * @retval 无 */ void SAIxA_Tx_Config(const uint16_t _usStandard, const uint16_t _usWordLen, const uint32_t _usAudioFreq) { BSP_AUDIO_OUT_ClockConfig(_usAudioFreq); SAI_CLK_ENABLE(); h_sai.Instance = SAI1_Block_A; h_sai.Init.AudioMode = SAI_MODEMASTER_TX;//配置为发送模式 h_sai.Init.Synchro = SAI_ASYNCHRONOUS; //模块内部为异步 h_sai.Init.OutputDrive = SAI_OUTPUTDRIVE_ENABLE;//立刻输出 h_sai.Init.NoDivider=SAI_MASTERDIVIDER_ENABLE;//使能MCK输出NOACK h_sai.Init.FIFOThreshold=SAI_FIFOTHRESHOLD_1QF;//1/4FIFO h_sai.Init.MonoStereoMode=SAI_STEREOMODE; h_sai.Init.AudioFrequency = _usAudioFreq; h_sai.Init.Protocol=SAI_FREE_PROTOCOL; //设置SAI1协议为:自由协议(支持I2S/LSB/MSB/TDM/PCM/DSP等协议) h_sai.Init.DataSize=SAI_DATASIZE_16; //设置数据大小 h_sai.Init.FirstBit=SAI_FIRSTBIT_MSB; //数据MSB位优先 h_sai.Init.ClockStrobing=SAI_CLOCKSTROBING_RISINGEDGE; //数据在时钟的上升/下降沿选通 //帧设置 h_sai.FrameInit.FrameLength=32; h_sai.FrameInit.ActiveFrameLength=16; h_sai.FrameInit.FSDefinition=SAI_FS_CHANNEL_IDENTIFICATION;//FS信号为SOF信号+通道识别信号 h_sai.FrameInit.FSPolarity=SAI_FS_ACTIVE_LOW; //FS低电平有效(下降沿) h_sai.FrameInit.FSOffset=SAI_FS_BEFOREFIRSTBIT; //在slot0的第一位的前一位使能FS,以匹配飞利浦标准 //SLOT设置 h_sai.SlotInit.FirstBitOffset=0; //slot偏移(FBOFF)为0 h_sai.SlotInit.SlotSize=SAI_SLOTSIZE_16B; //slot大小为32位 h_sai.SlotInit.SlotNumber=2; //slot数为2个 h_sai.SlotInit.SlotActive=SAI_SLOTACTIVE_0|SAI_SLOTACTIVE_1;//使能slot0和slot1 HAL_SAI_Init(&h_sai); //初始化SAI // HAL_SAI_InitProtocol(&h_sai, SAI_I2S_STANDARD, _usWordLen, 2);//2--left_channel and right_channel SAI1_Block_A->CR1|=1<<17; //写入CR1寄存器中 __HAL_SAI_ENABLE(&h_sai); } void SAIxB_Rx_Config(const uint16_t _usStandard, const uint16_t _usWordLen, const uint32_t _usAudioFreq) { h_saib.Instance = SAI1_Block_B; h_saib.Init.AudioMode = SAI_MODESLAVE_RX;//配置为发送模式 h_saib.Init.Synchro = SAI_SYNCHRONOUS; //模块内部为异步 h_saib.Init.OutputDrive = SAI_OUTPUTDRIVE_ENABLE;//立刻输出 h_saib.Init.NoDivider=SAI_MASTERDIVIDER_ENABLE;//使能MCK输出NOACK h_saib.Init.FIFOThreshold=SAI_FIFOTHRESHOLD_1QF;//1/4FIFO h_saib.Init.MonoStereoMode=SAI_STEREOMODE; h_saib.Init.AudioFrequency = _usAudioFreq; h_saib.Init.Protocol=SAI_FREE_PROTOCOL; //设置SAI1协议为:自由协议(支持I2S/LSB/MSB/TDM/PCM/DSP等协议) h_saib.Init.DataSize=SAI_DATASIZE_16; //设置数据大小 h_saib.Init.FirstBit=SAI_FIRSTBIT_MSB; //数据MSB位优先 h_saib.Init.ClockStrobing=SAI_CLOCKSTROBING_RISINGEDGE; //数据在时钟的上升/下降沿选通 //帧设置 h_saib.FrameInit.FrameLength=32; //设置帧长度为64,左通道32个SCK,右通道32个SCK. h_saib.FrameInit.ActiveFrameLength=16; //设置帧同步有效电平长度,在I2S模式下=1/2帧长. h_saib.FrameInit.FSDefinition=SAI_FS_CHANNEL_IDENTIFICATION;//FS信号为SOF信号+通道识别信号 h_saib.FrameInit.FSPolarity=SAI_FS_ACTIVE_LOW; //FS低电平有效(下降沿) h_saib.FrameInit.FSOffset=SAI_FS_BEFOREFIRSTBIT; //在slot0的第一位的前一位使能FS,以匹配飞利浦标准 //SLOT设置 h_saib.SlotInit.FirstBitOffset=0; //slot偏移(FBOFF)为0 h_saib.SlotInit.SlotSize=SAI_SLOTSIZE_16B; //slot大小为32位 h_saib.SlotInit.SlotNumber=2; //slot数为2个 h_saib.SlotInit.SlotActive=SAI_SLOTACTIVE_0|SAI_SLOTACTIVE_1;//使能slot0和slot1 HAL_SAI_Init(&h_saib); //初始化SAIB SAI1_Block_B->CR1|=1<<17; __HAL_SAI_ENABLE(&h_saib); } void SAIA_TX_DMA_Init(uint32_t buffer0,uint32_t buffer1,const uint32_t num) { DMA_CLK_ENABLE(); h_txdma.Instance = DMA_Instance; h_txdma.Init.Request = DMA_REQUEST_SAI1_A; h_txdma.Init.Direction = DMA_MEMORY_TO_PERIPH; h_txdma.Init.PeriphInc = DMA_PINC_DISABLE; h_txdma.Init.MemInc = DMA_MINC_ENABLE; h_txdma.Init.Mode = DMA_CIRCULAR; h_txdma.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD; h_txdma.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD ; h_txdma.Init.FIFOMode = DMA_FIFOMODE_DISABLE ; h_txdma.Init.Priority = DMA_PRIORITY_HIGH; h_txdma.Init.MemBurst=DMA_MBURST_SINGLE; //存储器单次突发传输 h_txdma.Init.PeriphBurst=DMA_PBURST_SINGLE; //外设突发单次传输 __HAL_LINKDMA(&h_sai,hdmatx,h_txdma); //将DMA与SAI联系起来 HAL_DMA_Init(&h_txdma); //初始化DMA __HAL_DMA_ENABLE_IT(&h_txdma,DMA_IT_TC); HAL_DMAEx_MultiBufferStart(&h_txdma,(uint32_t)buffer0,(uint32_t)&SAI1_Block_A->DR,(uint32_t)buffer1,num);//开启双缓冲 HAL_NVIC_SetPriority(DMA_IRQn,0,0); //DMA中断优先级 HAL_NVIC_EnableIRQ(DMA_IRQn); } void SAIB_RX_DMA_Init(uint32_t buffer0,uint32_t buffer1,const uint32_t num) { DMA_CLK_ENABLE(); h_rxdma.Instance = DMA1_Stream3; h_rxdma.Init.Request = DMA_REQUEST_SAI1_B; h_rxdma.Init.Direction = DMA_PERIPH_TO_MEMORY; h_rxdma.Init.PeriphInc = DMA_PINC_DISABLE; h_rxdma.Init.MemInc = DMA_MINC_ENABLE; h_rxdma.Init.Mode = DMA_CIRCULAR; h_rxdma.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD; h_rxdma.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD ; h_rxdma.Init.FIFOMode = DMA_FIFOMODE_DISABLE ; h_rxdma.Init.Priority = DMA_PRIORITY_HIGH; h_rxdma.Init.MemBurst=DMA_MBURST_SINGLE; //存储器单次突发传输 h_rxdma.Init.PeriphBurst=DMA_PBURST_SINGLE; //外设突发单次传输 __HAL_LINKDMA(&h_sai,hdmarx,h_rxdma); //将DMA与SAI联系起来 HAL_DMA_Init(&h_rxdma); //初始化DMA __HAL_DMA_ENABLE_IT(&h_rxdma,DMA_IT_TC); HAL_DMAEx_MultiBufferStart(&h_rxdma,(uint32_t)&SAI1_Block_B->DR,(uint32_t)buffer0,(uint32_t)buffer1,num);//开启双缓冲 HAL_NVIC_SetPriority(DMA1_Stream3_IRQn,0,0); //DMA中断优先级 HAL_NVIC_EnableIRQ(DMA1_Stream3_IRQn); } void SAI_Play_Stop(void) { //__HAL_SAI_DISABLE(&h_sai); __HAL_DMA_DISABLE(&h_txdma); } void SAI_Play_Start(void) { __HAL_DMA_ENABLE(&h_txdma);//开启DMA TX传输 } //SAI开始录音 void SAI_Rec_Start(void) { __HAL_DMA_ENABLE(&h_rxdma); //开启DMA RX传输 } //关闭SAI录音 void SAI_Rec_Stop(void) { __HAL_DMA_DISABLE(&h_rxdma); //结束录音 } /** * @brief DMA conversion complete callback. * @param hdma: pointer to a DMA_HandleTypeDef structure that contains * the configuration information for the specified DMA module. * @retval None */ void SAI_DMAConvCplt(DMA_HandleTypeDef *hdma) { MusicPlayer_SAI_DMA_TX_Callback(); } void SAIB_DMAConvCplt(DMA_HandleTypeDef *hdma) { MusicPlayer_SAI_DMA_RX_Callback(); } /** * @brief SPIx_TX_DMA_STREAM中断服务函数 * @param 无 * @retval 无 */ void SAI_TX_DMA_STREAM_IRQFUN(void) { //执行回调函数,读取数据等操作在这里面处理 h_txdma.XferCpltCallback = SAI_DMAConvCplt; h_txdma.XferM1CpltCallback = SAI_DMAConvCplt; HAL_DMA_IRQHandler(&h_txdma); } void SAI_RX_DMA_STREAM_IRQFUN(void) { //执行回调函数,读取数据等操作在这里面处理 h_rxdma.XferCpltCallback = SAIB_DMAConvCplt; h_rxdma.XferM1CpltCallback = SAIB_DMAConvCplt; HAL_DMA_IRQHandler(&h_rxdma); }