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SourceVuSTM32 Libraries and SamplesAudio_playback_and_record

Audio_playback_and_record sample

Audio_playback_and_record is a sample project defining the following symbols:

Most used functions

Name
Location
Summary
This function handles NMI exception.
This function handles Hard Fault exception.
This function handles Debug Monitor exception.
This function handles Memory Manage exception.
This function handles Bus Fault exception.
This function handles Usage Fault exception.
This function handles SysTick Handler.
This function handles SVCall exception.
This function handles PendSVC exception.
This function is executed in case of error occurrence.
Main program
Update SystemCoreClock variable according to Clock Register Values. The SystemCoreClock variable contains the core clock (HCLK), it can be used by the user application to setup the SysTick timer or configure other parameters. - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(*) - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(**) - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(**) or HSI_VALUE(*) multiplied/divided by the PLL factors. (*) HSI_VALUE is a constant defined in stm32f4xx_hal_conf.h file (default value 16 MHz) but the real value may vary depending on the variations in voltage and temperature. (**) HSE_VALUE is a constant defined in stm32f4xx_hal_conf.h file (its value depends on the application requirements), user has to ensure that HSE_VALUE is same as the real frequency of the crystal used. Otherwise, this function may have wrong result. - The result of this function could be not correct when using fractional value for HSE crystal.
Setup the microcontroller system Initialize the FPU setting, vector table location and External memory configuration.
This function handles External line 0 interrupt request.
Initializes a Drive
Gets Disk Status
Reads Sector(s)
Writes Sector(s)
I/O control operation
This function handles USB-On-The-Go FS global interrupt request.
This function handles TIM4 global interrupt request.
This function handles External line 1 interrupt request.
Stop Audio recording.
Stops playing Wave.
Pauses or Resumes a played Wave.
Update the recorded data.
Plays Wave from a mass storage.
Initializes the Wave player.
Starts Wave player.
Wave player.
Start Audio recording.
User Process
Main routine for Mass storage application
COMMAND_AudioExecuteApplication.
System Clock Configuration The system Clock is configured as follow : System Clock source = PLL (HSE) SYSCLK(Hz) = 168000000 HCLK(Hz) = 168000000 AHB Prescaler = 1 APB1 Prescaler = 4 APB2 Prescaler = 2 HSE Frequency(Hz) = 8000000 PLL_M = 8 PLL_N = 336 PLL_P = 2 PLL_Q = 7 VDD(V) = 3.3 Main regulator output voltage = Scale1 mode Flash Latency(WS) = 5
Configures TIM4 Peripheral for LEDs lighting.
Initialize the wave header file
Encoder initialization.
Initialize the wave header file

Other commonly used symbols

Name
Location
Summary
Internal High Speed oscillator (HSI) value. This value is used by the RCC HAL module to compute the system frequency (when HSI is used as system clock source, directly or through the PLL). Value of the Internal oscillator in Hz
Adjust the value of External High Speed oscillator (HSE) used in your application. This value is used by the RCC HAL module to compute the system frequency (when HSE is used as system clock source, directly or through the PLL). Value of the External oscillator in Hz
Miscellaneous Configuration *********************** Vector Table base offset field. This value must be a multiple of 0x200.
@file Audio/Audio_playback_and_record/Inc/main.h @author MCD Application Team Header for main.c module. @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.
@file Audio/Audio_playback_and_record/Inc/stm32f4xx_it.h @author MCD Application Team This file contains the headers of the interrupt handlers. @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.
Uncomment the line below to expanse the "assert_param" macro in the HAL drivers code
External clock source for I2S peripheral This value is used by the I2S HAL module to compute the I2S clock source frequency, this source is inserted directly through I2S_CKIN pad. Value of the External oscillator in Hz
tick interrupt priority
Internal Low Speed oscillator (LSI) value.
External Low Speed oscillator (LSE) value. Value of the External Low Speed oscillator in Hz
Time out for HSE start up, in ms
Time out for LSE start up, in ms
@file Audio/Inc/Audio_playback_and_record/Inc/stm32f4xx_hal_conf.h @author MCD Application Team HAL configuration file @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.
This is the list of modules to be used in the HAL driver
This is the HAL system configuration section Value of VDD in mv
Portions COPYRIGHT 2017 STMicroelectronics Copyright (C) 2017, ChaN, all right reserved. @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.
@file usbh_diskio_dma.h @author MCD Application Team Header for usbh_diskio_dma.c module. @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.
@file Audio/Audio_playback_and_record/Inc/waveplayer.h @author MCD Application Team Header for waveplayer.c module. @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.
@file Audio/Audio_playback_and_record/Inc/waverecorder.h @author MCD Application Team Header for waverecorder.c module. @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.
@file Audio/Audio_playback_and_record/Inc/usbh_conf.h @author MCD Application Team General low level driver configuration @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.

Dependencies