172 lines
4.8 KiB
C
172 lines
4.8 KiB
C
/**
|
||
******************************************************************
|
||
* @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 "./mp3Player/mp3Player.h"
|
||
SAI_HandleTypeDef h_sai;
|
||
DMA_HandleTypeDef h_txdma; //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 = 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_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)
|
||
{
|
||
|
||
|
||
|
||
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;
|
||
|
||
HAL_SAI_InitProtocol(&h_sai, SAI_I2S_STANDARD, _usWordLen, 2);//2--left_channel and right_channel
|
||
}
|
||
|
||
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 SAI_Play_Stop(void)
|
||
{
|
||
__HAL_SAI_DISABLE(&h_sai);
|
||
__HAL_DMA_DISABLE(&h_txdma);
|
||
}
|
||
|
||
|
||
void SAI_Play_Start(void)
|
||
{
|
||
SAI1_Block_A->CR1|=1<<17; //写入CR1寄存器中
|
||
__HAL_SAI_ENABLE(&h_sai);
|
||
__HAL_DMA_ENABLE(&h_txdma);//开启DMA TX传输
|
||
}
|
||
/**
|
||
* @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();
|
||
}
|
||
/**
|
||
* @brief SPIx_TX_DMA_STREAM中断服务函数
|
||
* @param 无
|
||
* @retval 无
|
||
*/
|
||
void I2Sx_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);
|
||
|
||
}
|
||
|
||
|