Diff: BSP_AudioOut_Overwrite.cpp

Revision:

0:eade5d3ae0eb

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/BSP_AudioOut_Overwrite.cpp	Thu May 05 11:12:45 2016 +0000
@@ -0,0 +1,113 @@
+//------------------------------------------------------------------------------
+//  Overwrite functuions and define calback functions
+//  for functions in stm32746g_discovery_audio.cpp
+//
+//  Original version: BSP_overwrite.cpp by Nanase
+//      https://developer.mbed.org/users/nanase/code/DISCO-F746NG_Sweep/
+//------------------------------------------------------------------------------
+#include "BSP_AudioOut_Overwrite.hpp"
+
+// These three callback functions are modyfied by Mikami
+void BSP_AUDIO_OUT_HalfTransfer_CallBack()
+{
+    Mikami::SaiIO::FillBuffer1st();
+}
+
+void BSP_AUDIO_OUT_TransferComplete_CallBack()
+{
+    Mikami::SaiIO::FillBuffer2nd();
+}
+
+void BSP_AUDIO_OUT_Error_CallBack()
+{
+    Mikami::SaiIO::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);
+}