求一份F429hal库音频播放例子

zb_木杉

最近搞音频，发现总是用HAL实现不了，希望大神分享一下例程，

fire

目前只有标准库的

zb_木杉

void BSP_AUDIO_OUT_ClockConfig(I2S_HandleTypeDef *hi2s, uint32_t AudioFreq, void *Params)
{
  RCC_PeriphCLKInitTypeDef RCC_ExCLKInitStruct;

  HAL_RCCEx_GetPeriphCLKConfig(&RCC_ExCLKInitStruct);
  
  /* Set the PLL configuration according to the audio frequency */
  if((AudioFreq == I2S_AUDIOFREQ_11K) || (AudioFreq == I2S_AUDIOFREQ_22K) || (AudioFreq == I2S_AUDIOFREQ_44K))
  {
    /* Configure PLLSAI prescalers */
    /* PLLI2S_VCO: VCO_429M
    SAI_CLK(first level) = PLLI2S_VCO/PLLSAIQ = 316/7 = 45 Mhz
    SAI_CLK_x = SAI_CLK(first level)/PLLI2SDivQ = 45/4 = 11.25 Mhz */
    RCC_ExCLKInitStruct.PeriphClockSelection = RCC_PERIPHCLK_I2S;
    RCC_ExCLKInitStruct.Sai2ClockSelection = RCC_I2SCLKSOURCE_PLLI2S;
    RCC_ExCLKInitStruct.PLLI2S.PLLI2SP = 0;
    RCC_ExCLKInitStruct.PLLI2S.PLLI2SN = 316;
                RCC_ExCLKInitStruct.PLLI2S.PLLI2SR = 7;
    RCC_ExCLKInitStruct.PLLI2S.PLLI2SQ = 4;
    RCC_ExCLKInitStruct.PLLI2SDivQ = 1;
    HAL_RCCEx_PeriphCLKConfig(&RCC_ExCLKInitStruct);
  }
  else /* AUDIO_FREQUENCY_8K, AUDIO_FREQUENCY_16K, AUDIO_FREQUENCY_48K), AUDIO_FREQUENCY_96K */
  {
    /* SAI clock config
    PLLI2S_VCO: VCO_344M
    SAI_CLK(first level) = PLLI2S_VCO/PLLSAIQ = 344/7 = 49.142 Mhz
    SAI_CLK_x = SAI_CLK(first level)/PLLI2SDivQ = 49.142/1 = 49.142 Mhz */
    RCC_ExCLKInitStruct.PeriphClockSelection = RCC_PERIPHCLK_I2S;
    RCC_ExCLKInitStruct.Sai2ClockSelection = RCC_I2SCLKSOURCE_PLLI2S;
    RCC_ExCLKInitStruct.PLLI2S.PLLI2SP = 0;
    RCC_ExCLKInitStruct.PLLI2S.PLLI2SN = 344;
                RCC_ExCLKInitStruct.PLLI2S.PLLI2SR = 7;
    RCC_ExCLKInitStruct.PLLI2S.PLLI2SQ = 1;
    RCC_ExCLKInitStruct.PLLI2SDivQ = 1;
    HAL_RCCEx_PeriphCLKConfig(&RCC_ExCLKInitStruct);
  }
}
火哥，这个函数在746里面有什么作用？？？？移植过来发现这个函数不通？

zb_木杉

fire 发表于 2017-9-5 13:48
目前只有标准库的

void BSP_AUDIO_OUT_ClockConfig(I2S_HandleTypeDef *hi2s, uint32_t AudioFreq, void *Params)
{
  RCC_PeriphCLKInitTypeDef RCC_ExCLKInitStruct;

  HAL_RCCEx_GetPeriphCLKConfig(&RCC_ExCLKInitStruct);
  
  /* Set the PLL configuration according to the audio frequency */
  if((AudioFreq == I2S_AUDIOFREQ_11K) || (AudioFreq == I2S_AUDIOFREQ_22K) || (AudioFreq == I2S_AUDIOFREQ_44K))
  {
    /* Configure PLLSAI prescalers */
    /* PLLI2S_VCO: VCO_429M
    SAI_CLK(first level) = PLLI2S_VCO/PLLSAIQ = 316/7 = 45 Mhz
    SAI_CLK_x = SAI_CLK(first level)/PLLI2SDivQ = 45/4 = 11.25 Mhz */
    RCC_ExCLKInitStruct.PeriphClockSelection = RCC_PERIPHCLK_I2S;
    RCC_ExCLKInitStruct.Sai2ClockSelection = RCC_I2SCLKSOURCE_PLLI2S;
    RCC_ExCLKInitStruct.PLLI2S.PLLI2SP = 0;
    RCC_ExCLKInitStruct.PLLI2S.PLLI2SN = 316;
                RCC_ExCLKInitStruct.PLLI2S.PLLI2SR = 7;
    RCC_ExCLKInitStruct.PLLI2S.PLLI2SQ = 4;
    RCC_ExCLKInitStruct.PLLI2SDivQ = 1;
    HAL_RCCEx_PeriphCLKConfig(&RCC_ExCLKInitStruct);
  }
  else /* AUDIO_FREQUENCY_8K, AUDIO_FREQUENCY_16K, AUDIO_FREQUENCY_48K), AUDIO_FREQUENCY_96K */
  {
    /* SAI clock config
    PLLI2S_VCO: VCO_344M
    SAI_CLK(first level) = PLLI2S_VCO/PLLSAIQ = 344/7 = 49.142 Mhz
    SAI_CLK_x = SAI_CLK(first level)/PLLI2SDivQ = 49.142/1 = 49.142 Mhz */
    RCC_ExCLKInitStruct.PeriphClockSelection = RCC_PERIPHCLK_I2S;
    RCC_ExCLKInitStruct.Sai2ClockSelection = RCC_I2SCLKSOURCE_PLLI2S;
    RCC_ExCLKInitStruct.PLLI2S.PLLI2SP = 0;
    RCC_ExCLKInitStruct.PLLI2S.PLLI2SN = 344;
                RCC_ExCLKInitStruct.PLLI2S.PLLI2SR = 7;
    RCC_ExCLKInitStruct.PLLI2S.PLLI2SQ = 1;
    RCC_ExCLKInitStruct.PLLI2SDivQ = 1;
    HAL_RCCEx_PeriphCLKConfig(&RCC_ExCLKInitStruct);
  }
}

这个函数是746里面的，能不能移植到429里面呢？？？

fire

zb_木杉 发表于 2017-9-5 14:30
void BSP_AUDIO_OUT_ClockConfig(I2S_HandleTypeDef *hi2s, uint32_t AudioFreq, void *Params)
{
  RC ...

你最好花点时间把程序读懂，然后再移植。

zb_木杉

fire 发表于 2017-9-5 14:39
你最好花点时间把程序读懂，然后再移植。

好的。谢谢