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
Now added generate Saw Wave to DAC function in generate(); You will hear Stereo saw wave sound now.
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****/