/**
@page SAI_AudioPlay Description of the SAI audio play example
@verbatim
******************** (C) COPYRIGHT 2017 STMicroelectronics *******************
* @file SAI/SAI_AudioPlay/readme.txt
* @author MCD Application Team
* @brief Description of the SAI audio play example.
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
@endverbatim
@par Example Description
Use of the SAI HAL API to play an audio file in DMA circular mode and handle the buffer update.
Plug a headphone to ear the sound /!\ Take care of yours ears.
Default volume is 20%.
The audio file is played in loop
@Note: Copy file 'audio.bin' (available in AudioFile) directly in the flash
at @0x08080000 using ST-Link utility
The sound is output on Audio_out1 connector CN27 of STM32469I-EVAL.
In case of error, LED3 is on.
Once started, LED1 is toggling on STM32469I-EVAL.
@note Note the DMA runs in circular buffer mode and never stops. If you break with
the debugger, the DMA hw will keep running and a noise will be heard.
@note This example does not use BSP_AUDIO so the MspInit is coded in the main.c.
@note The connection of the LCD reset pin to a dedicated GPIO PK7 instead of the STM32F469 NRST pin may cause residual display on LCD with applications/examples that do not require display.
The LCD clear can be ensured by hardware through the boards power off/power on or by software calling the BSP_LCD_Reset() function.
@par Keywords
Audio, SAI, DMA, Buffer update, play, headphone, audio protocol
@par Directory contents
- SAI/SAI_AudioPlay/Src/main.c Main program
- SAI/SAI_AudioPlay/Src/system_stm32f4xx.c STM32F4xx system source file
- SAI/SAI_AudioPlay/Src/stm32f4xx_it.c Interrupt handlers
- SAI/SAI_AudioPlay/Inc/main.h Main program header file
- SAI/SAI_AudioPlay/Inc/stm32f4xx_hal_conf.h HAL configuration file
- SAI/SAI_AudioPlay/Inc/stm32f4xx_it.h Interrupt handlers header file
- SAI/SAI_AudioPlay/AudioFile/audio.bin Audio wave extract.
@par Hardware and Software environment
- This example runs on STM32F469xx/STM32F479xx devices.
- This example has been tested and validated with STMicroelectronics STM32469I-EVAL RevC
board and can be easily tailored to any other supported device
and development board.
- STM32469I-EVAL Set-up :
There are no special switches for this example
@par How to use it ?
In order to make the program work, you must do the following :
- Open your preferred toolchain
- Rebuild all files and load your image into target memory
- Run the example
*/
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