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SourceVuSTM32 Libraries and SamplesDFSDM_PulseSkipper

DFSDM_PulseSkipper sample

DFSDM_PulseSkipper 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
System Clock Configuration The system Clock is configured as follows : System Clock source = PLL (HSE) SYSCLK(Hz) = 100000000 HCLK(Hz) = 100000000 AHB Prescaler = 1 APB1 Prescaler = 2 APB2 Prescaler = 1 MSI Frequency(Hz) = 8000000 PLL_M = 8 PLL_N = 200 PLL_R = 2 PLL_P = 2 PLL_Q = 7 Flash Latency(WS) = 3
This function handles TIMER3 interrupt request.
This function handles DMA2_Channel8 interrupt request.
This function handles DMA2_Channel8 interrupt request.
This function handles DMA2_Channel3 interrupt request.
This function handles DMA2_Channel8 interrupt request.
This function handles TIMER4 interrupt request.
This function handles I2S DMA interrupt request.
This function handles DMA2_Channel8 interrupt request.
Playback initialization
PDM Delay initialization
DFSDM channels and filter initialization
Enable Multi Channel clock Delay for DFSDM1 and DFSDM2 .
Inject DFSDM2 audio clock as clock source for the bitstream clock
Stop DFSDM2 audio clock as clock source for the bitstream clock.
Generate Pulse skipper on selected channel
Turns selected LED Off.

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 DFSDM/DFSDM_PulseSkipper/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.
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. LSI Typical Value in Hz
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 stm32f4xx_hal_conf_template.h @author MCD Application Team HAL configuration template file. This file should be copied to the application folder and renamed to stm32f4xx_hal_conf.h. @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
This is the list of modules to be used in the HAL driver
HAL MSP module.
Channels selection to generate pulse skipper of DFSDM2. This parameter can be a value of DFSDM2_PULSESKIPPER_CH
Channels selection to generate pulse skipper of DFSDM1. This parameter can be a value of DFSDM1_PULSESKIPPER_CH
Skipper Delay parameters structure definition DFSDM1_PULSESKIPPER_CH
DFSDM2_PULSESKIPPER_CH
@file DFSDM/DFSDM_AudioRecord/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.

Dependencies