USART_Communication_TxRx_DMA sample

stm32f4xx_it.c:49

This function handles NMI exception.

stm32f4xx_it.c:58

This function handles Hard Fault exception.

stm32f4xx_it.c:119

This function handles Debug Monitor exception.

stm32f4xx_it.c:71

This function handles Memory Manage exception.

stm32f4xx_it.c:84

This function handles Bus Fault exception.

stm32f4xx_it.c:97

This function handles Usage Fault exception.

stm32f4xx_it.c:137

This function handles SysTick Handler.

stm32f4xx_it.c:110

This function handles SVCall exception.

stm32f4xx_it.c:128

This function handles PendSVC exception.

main.c:71

Main program

main.c:439

System Clock Configuration The system Clock is configured as follow : System Clock source = PLL (HSE) SYSCLK(Hz) = 100000000 HCLK(Hz) = 100000000 AHB Prescaler = 1 APB1 Prescaler = 2 APB2 Prescaler = 1 HSE Frequency(Hz) = 8000000 PLL_M = 8 PLL_N = 400 PLL_P = 4 VDD(V) = 3.3 Main regulator output voltage = Scale1 mode Flash Latency(WS) = 3

main.c:309

Set LED2 to Blinking mode for an infinite loop (toggle period based on value provided as input parameter).

main.c:263

Initialize LED2.

main.c:484

Function to manage User push-button

main.c:283

Turn-on LED2.

main.c:324

Configures User push-button in GPIO or EXTI Line Mode.

main.c:294

Turn-off LED2.

main.c:351

Wait for User push-button press to start transfer.

main.c:114

This function configures the DMA Channels for TX and RX transfers

stm32f4xx_it.c:170

This function handles DMA1 interrupt request.

main.c:404

Compares two 8-bit buffers and returns the comparison result.

stm32f4xx_it.c:191

This function handles DMA1 interrupt request.

main.c:367

Wait end of transfer and check if received Data are well.

main.c:179

This function configures USARTx Instance.

main.c:243

This function initiates TX and RX DMA transfers by enabling DMA channels

main.c:517

Function called in case of error detected in USART IT Handler

main.c:506

Function called from DMA1 IRQ Handler when Rx transfer is completed

main.c:495

Function called from DMA1 IRQ Handler when Tx transfer is completed

system_stm32f4xx.c:79

Miscellaneous Configuration *********************** Vector Table base offset field. This value must be a multiple of 0x200.

main.h:21

@file Examples_LL/USART/USART_Communication_TxRx_DMA/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.

stm32f4xx_it.h:21

@file Examples_LL/USART/USART_Communication_TxRx_DMA/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.

main.c:40

main.c:47

main.h:51

LED2

main.h:52

main.h:66

Key push-button

main.h:69

main.h:60

main.h:67

main.h:70

main.h:77

main.h:53

main.h:68

main.h:73

main.h:71

main.h:72

main.h:58

Toggle periods for various blinking modes

main.c:37

main.c:46

main.h:59

main.c:41

main.c:38

main.c:42

main.c:48

main.c:45