Part of MicroGen4 Music Synthesizer Program. (But not test it yet.) I2S ,DMA ,Stereo ,16Bit Dac(PCM1781) See detail: http://www.geocities.jp/micro_diys/index2

Dependencies:   mbed

Now added generate Saw Wave to DAC function in generate(); You will hear Stereo saw wave sound now. /media/uploads/p_igmon/i2s_sample_test_audacity.png

more info: http://www.geocities.jp/micro_diys/i2s_test_sample/i2s_test_sample.html

stm32f4xx_it.cpp

Committer:
p_igmon
Date:
2017-09-21
Revision:
1:48f506a7b488
Parent:
0:dc88722ab141

File content as of revision 1:48f506a7b488:

/**
  ******************************************************************************
  * @file    stm32f4xx_it.c
  * @date    22/06/2014 09:00:07
  * @brief   Interrupt Service Routines.
  ******************************************************************************
  *
  * COPYRIGHT(c) 2014 STMicroelectronics
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *   1. Redistributions of source code must retain the above copyright notice,
  *      this list of conditions and the following disclaimer.
  *   2. Redistributions in binary form must reproduce the above copyright notice,
  *      this list of conditions and the following disclaimer in the documentation
  *      and/or other materials provided with the distribution.
  *   3. Neither the name of STMicroelectronics nor the names of its contributors
  *      may be used to endorse or promote products derived from this software
  *      without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */

#include "synthesizer.h"
extern DigitalOut myled;
extern DMA_HandleTypeDef hdma_i2s2_ext_tx;

/******************************************************************************/
/*            Cortex-M4 Processor Interruption and Exception Handlers         */ 
/******************************************************************************/

/**
* @brief This function handles System tick timer.
*/
/*
void SysTick_Handler(void)
{
  HAL_IncTick();
  HAL_SYSTICK_IRQHandler();
}
*/

/**
* @brief This function handles DMA1 Stream4 global interrupt.
*/
void DMA1_Stream4_IRQHandler(void)
{
  HAL_NVIC_ClearPendingIRQ(DMA1_Stream4_IRQn);
  HAL_DMA_IRQHandler(&hdma_i2s2_ext_tx);
//    myled = ~myled;
}

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/