/**
@page DMA_CopyFromFlashToMemory_Init DMA example
@verbatim
******************************************************************************
* @file Examples_LL/DMA/DMA_CopyFromFlashToMemory_Init/readme.txt
* @author MCD Application Team
* @brief Description of the DMA example.
******************************************************************************
*
* Copyright (c) 2020 STMicroelectronics. All rights reserved.
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
@endverbatim
@par Example Description
How to use a DMA channel to transfer a word data buffer
from Flash memory to embedded SRAM. The peripheral initialization uses LL
initialization functions to demonstrate LL init usage.
At the beginning of the main program the SystemClock_Config() function is used to configure the system
clock (SYSCLK) to run at 48 MHz.
Then the LED_Init() function is used to initialize the LED2.
Then the Configure_DMA() function is used to configure the DMA1_Channel1 to transfer the contents of a 32-word data
buffer stored in Flash memory to the reception buffer declared in RAM.
The start of transfer is triggered by software(LL_DMA_EnableChannel()). DMA1_Channel1 memory-to-memory
transfer is enabled. Source and destination addresses incrementing is also enabled.
The transfer is started by setting the channel enable bit for DMA1_Channel1.
At the end of the transfer a Transfer Complete interrupt is generated since it
is enabled and the callback function (customized by user) is called.
Finally, aSRC_Const_Buffer and aDST_Buffer are compared through Buffercmp() in order to
check buffers correctness.
NUCLEO-WL55JC RevC's LED2 can be used to monitor the transfer status:
- LED2 is turned ON if the DMA data transfer is successfully completed.
- LED2 is blinking every 1 sec in case of error.
@par Keywords
System, DMA, Data Transfer, Memory to memory, Flash, SRAM
@par Directory contents
- DMA/DMA_CopyFromFlashToMemory_Init/Inc/stm32wlxx_it.h Interrupt handlers header file
- DMA/DMA_CopyFromFlashToMemory_Init/Inc/main.h Header for main.c module
- DMA/DMA_CopyFromFlashToMemory_Init/Inc/stm32_assert.h Template file to include assert_failed function
- DMA/DMA_CopyFromFlashToMemory_Init/Src/stm32wlxx_it.c Interrupt handlers
- DMA/DMA_CopyFromFlashToMemory_Init/Src/main.c Main program
- DMA/DMA_CopyFromFlashToMemory_Init/Src/system_stm32wlxx.c STM32WLxx system source file
@par Hardware and Software environment
- This example runs on STM32WL55JCIx devices.
- This example has been tested with NUCLEO-WL55JC RevC board and can be
easily tailored to any other supported device and development board.
@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
* <h3><center>© COPYRIGHT STMicroelectronics</center></h3>
*/
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