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/* ... */
#include "main.h"
/* ... */
/* ... */
Includes
DMA_HandleTypeDef DmaHandle;
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];
Private variables
static void DMA_Config(void);
static void SystemClock_Config(void);
static void TransferComplete(DMA_HandleTypeDef *DmaHandle);
static void TransferError(DMA_HandleTypeDef *DmaHandle);
Private function prototypes
/* ... */
int main(void)
{
/* ... */
HAL_Init();
SystemClock_Config();
BSP_LED_Init(LED1);
BSP_LED_Init(LED2);
BSP_LED_Init(LED3);
DMA_Config();
while (1)
{
}while (1) { ... }
}{ ... }
/* ... */
static void DMA_Config(void)
{
__HAL_RCC_DMA2_CLK_ENABLE();
DmaHandle.Init.Channel = DMA_CHANNEL;
DmaHandle.Init.Direction = DMA_MEMORY_TO_MEMORY;
DmaHandle.Init.PeriphInc = DMA_PINC_ENABLE;
DmaHandle.Init.MemInc = DMA_MINC_ENABLE;
DmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
DmaHandle.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
DmaHandle.Init.Mode = DMA_NORMAL;
DmaHandle.Init.Priority = DMA_PRIORITY_HIGH;
DmaHandle.Init.FIFOMode = DMA_FIFOMODE_ENABLE;
DmaHandle.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_1QUARTERFULL;
DmaHandle.Init.MemBurst = DMA_MBURST_SINGLE;
DmaHandle.Init.PeriphBurst = DMA_PBURST_SINGLE;
DmaHandle.Instance = DMA_STREAM;
if(HAL_DMA_Init(&DmaHandle) != HAL_OK)
{
BSP_LED_On(LED3);
while(1)
{
}while (1) { ... }
}if (HAL_DMA_Init(&DmaHandle) != HAL_OK) { ... }
HAL_DMA_RegisterCallback(&DmaHandle, HAL_DMA_XFER_CPLT_CB_ID, TransferComplete);
HAL_DMA_RegisterCallback(&DmaHandle, HAL_DMA_XFER_ERROR_CB_ID, TransferError);
HAL_NVIC_SetPriority(DMA_STREAM_IRQ, 0, 0);
HAL_NVIC_EnableIRQ(DMA_STREAM_IRQ);
if(HAL_DMA_Start_IT(&DmaHandle, (uint32_t)&aSRC_Const_Buffer, (uint32_t)&aDST_Buffer, BUFFER_SIZE) != HAL_OK)
{
BSP_LED_On(LED3);
while(1)
{
}while (1) { ... }
}if (HAL_DMA_Start_IT(&DmaHandle, (uint32_t)&aSRC_Const_Buffer, (uint32_t)&aDST_Buffer, BUFFER_SIZE) != HAL_OK) { ... }
}{ ... }
/* ... */
static void TransferComplete(DMA_HandleTypeDef *DmaHandle)
{
BSP_LED_On(LED1);
}{ ... }
/* ... */
static void TransferError(DMA_HandleTypeDef *DmaHandle)
{
BSP_LED_On(LED2);
}{ ... }
/* ... */
static void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;
__HAL_RCC_PWR_CLK_ENABLE();
/* ... */
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 25;
RCC_OscInitStruct.PLL.PLLN = 360;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 7;
HAL_RCC_OscConfig(&RCC_OscInitStruct);
HAL_PWREx_EnableOverDrive();
/* ... */
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
}{ ... }
#ifdef USE_FULL_ASSERT
/* ... */
void assert_failed(uint8_t* file, uint32_t line)
{
/* ... */
while (1)
{
}while (1) { ... }
}assert_failed (uint8_t* file, uint32_t line) { ... }
/* ... */#endif
/* ... */
/* ... */