Output the audio signal (*.bin) with filtering by IIR filter in the SD card using onboard CODEC. For *.wav file, F746_SD_WavPlayer and F746_SD_GraphicEqualiser are published on mbed. SD カードのオーディオ信号 (*.bin) を遮断周波数可変の IIR フィルタを通して,ボードに搭載されているCODEC で出力する.*.wav 形式のファイル用には,F746_SD_WavPlayer と F746_SD_GraphicEqualiser を mbed で公開している.
Dependencies: BSP_DISCO_F746NG_patch_fixed F746_GUI LCD_DISCO_F746NG SDFileSystem_Warning_Fixed TS_DISCO_F746NG mbed
MyClasses_Functions/BSP_AudioOut_Overwrite.cpp
- Committer:
- MikamiUitOpen
- Date:
- 2016-04-16
- Revision:
- 4:76aa20fb326a
File content as of revision 4:76aa20fb326a:
//-------------------------------------------------------------- // Overwrite functuions and define calback functions // for functions in stm32746g_discovery_audio.cpp //-------------------------------------------------------------- #include "BSP_AudioOut_Overwrite.hpp" // These three callback functions are modyfied by Mikami void BSP_AUDIO_OUT_HalfTransfer_CallBack() { Mikami::SaiIO_O::FillBuffer1st(); } void BSP_AUDIO_OUT_TransferComplete_CallBack() { Mikami::SaiIO_O::FillBuffer2nd(); } void BSP_AUDIO_OUT_Error_CallBack() { Mikami::SaiIO_O::ErrorTrap(); } //-------------------------------------------------------------- // Followings are original by Nanase //-------------------------------------------------------------- DMA_HandleTypeDef hdma_sai_tx; void AUDIO_OUT_SAIx_DMAx_IRQHandler() { HAL_DMA_IRQHandler(&hdma_sai_tx); } void BSP_AUDIO_OUT_MspInit(SAI_HandleTypeDef *hsai, void *Params) { //static DMA_HandleTypeDef hdma_sai_tx; GPIO_InitTypeDef gpio_init_structure; /* Enable SAI clock */ AUDIO_OUT_SAIx_CLK_ENABLE(); /* Enable GPIO clock */ AUDIO_OUT_SAIx_MCLK_ENABLE(); AUDIO_OUT_SAIx_SCK_SD_ENABLE(); AUDIO_OUT_SAIx_FS_ENABLE(); /* CODEC_SAI pins configuration: FS, SCK, MCK and SD pins ------------------*/ gpio_init_structure.Pin = AUDIO_OUT_SAIx_FS_PIN; gpio_init_structure.Mode = GPIO_MODE_AF_PP; gpio_init_structure.Pull = GPIO_NOPULL; gpio_init_structure.Speed = GPIO_SPEED_HIGH; gpio_init_structure.Alternate = AUDIO_OUT_SAIx_FS_SD_MCLK_AF; HAL_GPIO_Init(AUDIO_OUT_SAIx_FS_GPIO_PORT, &gpio_init_structure); gpio_init_structure.Pin = AUDIO_OUT_SAIx_SCK_PIN; gpio_init_structure.Mode = GPIO_MODE_AF_PP; gpio_init_structure.Pull = GPIO_NOPULL; gpio_init_structure.Speed = GPIO_SPEED_HIGH; gpio_init_structure.Alternate = AUDIO_OUT_SAIx_SCK_AF; HAL_GPIO_Init(AUDIO_OUT_SAIx_SCK_SD_GPIO_PORT, &gpio_init_structure); gpio_init_structure.Pin = AUDIO_OUT_SAIx_SD_PIN; gpio_init_structure.Mode = GPIO_MODE_AF_PP; gpio_init_structure.Pull = GPIO_NOPULL; gpio_init_structure.Speed = GPIO_SPEED_HIGH; gpio_init_structure.Alternate = AUDIO_OUT_SAIx_FS_SD_MCLK_AF; HAL_GPIO_Init(AUDIO_OUT_SAIx_SCK_SD_GPIO_PORT, &gpio_init_structure); gpio_init_structure.Pin = AUDIO_OUT_SAIx_MCLK_PIN; gpio_init_structure.Mode = GPIO_MODE_AF_PP; gpio_init_structure.Pull = GPIO_NOPULL; gpio_init_structure.Speed = GPIO_SPEED_HIGH; gpio_init_structure.Alternate = AUDIO_OUT_SAIx_FS_SD_MCLK_AF; HAL_GPIO_Init(AUDIO_OUT_SAIx_MCLK_GPIO_PORT, &gpio_init_structure); /* Enable the DMA clock */ AUDIO_OUT_SAIx_DMAx_CLK_ENABLE(); if(hsai->Instance == AUDIO_OUT_SAIx) { /* Configure the hdma_saiTx handle parameters */ hdma_sai_tx.Init.Channel = AUDIO_OUT_SAIx_DMAx_CHANNEL; hdma_sai_tx.Init.Direction = DMA_MEMORY_TO_PERIPH; hdma_sai_tx.Init.PeriphInc = DMA_PINC_DISABLE; hdma_sai_tx.Init.MemInc = DMA_MINC_ENABLE; hdma_sai_tx.Init.PeriphDataAlignment = AUDIO_OUT_SAIx_DMAx_PERIPH_DATA_SIZE; hdma_sai_tx.Init.MemDataAlignment = AUDIO_OUT_SAIx_DMAx_MEM_DATA_SIZE; hdma_sai_tx.Init.Mode = DMA_CIRCULAR; hdma_sai_tx.Init.Priority = DMA_PRIORITY_HIGH; hdma_sai_tx.Init.FIFOMode = DMA_FIFOMODE_ENABLE; hdma_sai_tx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL; hdma_sai_tx.Init.MemBurst = DMA_MBURST_SINGLE; hdma_sai_tx.Init.PeriphBurst = DMA_PBURST_SINGLE; hdma_sai_tx.Instance = AUDIO_OUT_SAIx_DMAx_STREAM; /* Associate the DMA handle */ __HAL_LINKDMA(hsai, hdmatx, hdma_sai_tx); /* Deinitialize the Stream for new transfer */ HAL_DMA_DeInit(&hdma_sai_tx); /* Configure the DMA Stream */ HAL_DMA_Init(&hdma_sai_tx); } /* SAI DMA IRQ Channel configuration */ HAL_NVIC_SetPriority(AUDIO_OUT_SAIx_DMAx_IRQ, AUDIO_OUT_IRQ_PREPRIO, 0); HAL_NVIC_EnableIRQ(AUDIO_OUT_SAIx_DMAx_IRQ); }