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STM32CubeWL/Projects/NUCLEO-WL55JC/Examples_MIX/DMA/DMA_FLASHToRAM/Src/main.c

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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file Examples_MIX/DMA/DMA_FLASHToRAM/Src/main.c
* @author MCD Application Team
* @brief This example provides a description of how to use a DMA channel
* to transfer a word data buffer from FLASH memory to embedded
* SRAM memory through the STM32WLxx DMA HAL and LL API.
******************************************************************************
* @attention
*
* Copyright (c) 2020 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.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
DMA_HandleTypeDef hdma_memtomem_dma1_channel1;
/* USER CODE BEGIN PV */
/* DMA Instance and Channel declaration */
DMA_TypeDef* DmaInstance;
uint32_t DmaChannel;
static const uint32_t aSRC_Const_Buffer[BUFFER_SIZE] =
{
0x01020304, 0x05060708, 0x090A0B0C, 0x0D0E0F10,
0x11121314, 0x15161718, 0x191A1B1C, 0x1D1E1F20,
0x21222324, 0x25262728, 0x292A2B2C, 0x2D2E2F30,
0x31323334, 0x35363738, 0x393A3B3C, 0x3D3E3F40,
0x41424344, 0x45464748, 0x494A4B4C, 0x4D4E4F50,
0x51525354, 0x55565758, 0x595A5B5C, 0x5D5E5F60,
0x61626364, 0x65666768, 0x696A6B6C, 0x6D6E6F70,
0x71727374, 0x75767778, 0x797A7B7C, 0x7D7E7F80
};
static uint32_t aDST_Buffer[BUFFER_SIZE];
static __IO uint32_t transferErrorDetected; /* Set to 1 if an error transfer is detected */
static __IO uint32_t transferCompleteDetected; /* Set to 1 if transfer is correctly completed */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_DMA_Init(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
/* STM32WLxx HAL library initialization:
- Configure the Flash prefetch
- Systick timer is configured by default as source of time base, but user
can eventually implement his proper time base source (a general purpose
timer for example or other time source), keeping in mind that Time base
duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
handled in milliseconds basis.
- Set NVIC Group Priority to 4
- Low Level Initialization
*/
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* Initialize LEDs */
BSP_LED_Init(LED2);
BSP_LED_Init(LED1);
BSP_LED_Init(LED3);
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* Set to 1 if an transfer error is detected */
transferErrorDetected = 0;
transferCompleteDetected = 0;
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_DMA_Init();
/* USER CODE BEGIN 2 */
/* Configure and start the DMA transfer using the interrupt mode */
/* Enable All the DMA interrupts */
/* Using HAL interface, use : */
/* - HAL_DMA_Start_IT() to Configure and start the DMA transfer */
/* using the interrupt mode. */
/* Using LL interface, use : */
/* - __LL_DMA_GET_INSTANCE() to convert DMA1_Channel1 into DMA1 */
/* - __LL_DMA_GET_CHANNEL() to convert DMA1_Channel1 into LL_DMA_CHANNEL_1 */
/* - LL_DMA_ConfigAddresses() to configure addresses source, destination */
/* - LL_DMA_SetDataLength() to configure data length to transfer */
/* - LL_DMA_EnableIT_TC() to enable Transfer Complete Interrupt */
/* - LL_DMA_EnableIT_TE() to enable Transfer Error Interrupt */
/* - LL_DMA_EnableChannel() to enable DMA Transfer */
/* ########## Starting from this point HAL API must not be used ########## */
DmaInstance = __LL_DMA_GET_INSTANCE(hdma_memtomem_dma1_channel1.Instance);
DmaChannel = __LL_DMA_GET_CHANNEL(hdma_memtomem_dma1_channel1.Instance);
LL_DMA_ConfigAddresses(DmaInstance, DmaChannel,
(uint32_t)&aSRC_Const_Buffer,
(uint32_t)&aDST_Buffer,
LL_DMA_DIRECTION_MEMORY_TO_MEMORY);
LL_DMA_SetDataLength(DmaInstance, DmaChannel, BUFFER_SIZE);
LL_DMA_EnableIT_TC(DmaInstance, DmaChannel);
LL_DMA_EnableIT_TE(DmaInstance, DmaChannel);
LL_DMA_EnableChannel(DmaInstance, DmaChannel);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
if (transferErrorDetected == 1)
{
/* Turn LED1 on*/
BSP_LED_On(LED1);
transferErrorDetected = 0;
}
if (transferCompleteDetected == 1)
{
/* Turn LED2 on*/
BSP_LED_On(LED2);
transferCompleteDetected = 0;
}
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Configure the main internal regulator output voltage
*/
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI;
RCC_OscInitStruct.MSIState = RCC_MSI_ON;
RCC_OscInitStruct.MSICalibrationValue = RCC_MSICALIBRATION_DEFAULT;
RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_11;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Configure the SYSCLKSource, HCLK, PCLK1 and PCLK2 clocks dividers
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK3|RCC_CLOCKTYPE_HCLK
|RCC_CLOCKTYPE_SYSCLK|RCC_CLOCKTYPE_PCLK1
|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_MSI;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.AHBCLK3Divider = RCC_SYSCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
}
/**
* Enable DMA controller clock
* Configure DMA for memory to memory transfers
* hdma_memtomem_dma1_channel1
*/
static void MX_DMA_Init(void)
{
/* DMA controller clock enable */
__HAL_RCC_DMAMUX1_CLK_ENABLE();
__HAL_RCC_DMA1_CLK_ENABLE();
/* Configure DMA request hdma_memtomem_dma1_channel1 on DMA1_Channel1 */
hdma_memtomem_dma1_channel1.Instance = DMA1_Channel1;
hdma_memtomem_dma1_channel1.Init.Request = DMA_REQUEST_MEM2MEM;
hdma_memtomem_dma1_channel1.Init.Direction = DMA_MEMORY_TO_MEMORY;
hdma_memtomem_dma1_channel1.Init.PeriphInc = DMA_PINC_ENABLE;
hdma_memtomem_dma1_channel1.Init.MemInc = DMA_MINC_ENABLE;
hdma_memtomem_dma1_channel1.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
hdma_memtomem_dma1_channel1.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
hdma_memtomem_dma1_channel1.Init.Mode = DMA_NORMAL;
hdma_memtomem_dma1_channel1.Init.Priority = DMA_PRIORITY_HIGH;
if (HAL_DMA_Init(&hdma_memtomem_dma1_channel1) != HAL_OK)
{
Error_Handler( );
}
/* */
if (HAL_DMA_ConfigChannelAttributes(&hdma_memtomem_dma1_channel1, DMA_CHANNEL_NPRIV) != HAL_OK)
{
Error_Handler( );
}
/* DMA interrupt init */
/* DMA1_Channel1_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA1_Channel1_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(DMA1_Channel1_IRQn);
}
/* USER CODE BEGIN 4 */
/**
* @brief DMA conversion complete callback
* @note This function is executed when the transfer complete interrupt
* is generated
* @retval None
*/
void TransferComplete(void)
{
transferCompleteDetected = 1;
}
/**
* @brief DMA conversion error callback
* @note This function is executed when the transfer error interrupt
* is generated during DMA transfer
* @retval None
*/
void TransferError(void)
{
transferErrorDetected = 1;
}
/* USER CODE END 4 */
/**
* @brief This function is executed in case of error occurrence.
* @retval None
*/
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
/* Turn LED3 on: Transfer Error */
BSP_LED_On(LED3);
while (1)
{
}
/* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
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