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/* ... */
#include "main.h"
/* ... */
/* ... */
Includes
#define TRANSMITTER_BOARD
Private define
UART_HandleTypeDef UartHandle;
__IO ITStatus UartReady = RESET;
__IO uint32_t UserButtonStatus = 0;
uint8_t aTxBuffer[] = " ****UART_TwoBoards communication based on DMA**** ****UART_TwoBoards communication based on DMA**** ****UART_TwoBoards communication based on DMA**** ";
uint8_t aRxBuffer[RXBUFFERSIZE];
Private variables
static void SystemClock_Config(void);
static void Error_Handler(void);
static uint16_t Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength);
Private function prototypes
/* ... */
int main(void)
{
/* ... */
HAL_Init();
SystemClock_Config();
BSP_LED_Init(LED1);
BSP_LED_Init(LED2);
BSP_LED_Init(LED3);
#ifdef TRANSMITTER_BOARD
BSP_PB_Init(BUTTON_USER, BUTTON_MODE_EXTI);
/* ... */
while(UserButtonStatus == 0)
{
BSP_LED_Toggle(LED_GREEN);
HAL_Delay(100);
}while (UserButtonStatus == 0) { ... }
BSP_LED_Off(LED_GREEN); /* ... */
#endif
/* ... */
UartHandle.Instance = USARTx;
UartHandle.Init.BaudRate = 9600;
UartHandle.Init.WordLength = UART_WORDLENGTH_8B;
UartHandle.Init.StopBits = UART_STOPBITS_1;
UartHandle.Init.Parity = UART_PARITY_NONE;
UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
UartHandle.Init.Mode = UART_MODE_TX_RX;
if(HAL_UART_DeInit(&UartHandle) != HAL_OK)
{
Error_Handler();
}if (HAL_UART_DeInit(&UartHandle) != HAL_OK) { ... }
if(HAL_UART_Init(&UartHandle) != HAL_OK)
{
Error_Handler();
}if (HAL_UART_Init(&UartHandle) != HAL_OK) { ... }
#ifdef TRANSMITTER_BOARD
/* ... */
if(HAL_UART_Receive_DMA(&UartHandle, (uint8_t *)aRxBuffer, RXBUFFERSIZE) != HAL_OK)
{
Error_Handler();
}if (HAL_UART_Receive_DMA(&UartHandle, (uint8_t *)aRxBuffer, RXBUFFERSIZE) != HAL_OK) { ... }
/* ... */
if(HAL_UART_Transmit_DMA(&UartHandle, (uint8_t*)aTxBuffer, TXBUFFERSIZE)!= HAL_OK)
{
Error_Handler();
}if (HAL_UART_Transmit_DMA(&UartHandle, (uint8_t*)aTxBuffer, TXBUFFERSIZE)!= HAL_OK) { ... }
while (UartReady != SET)
{
}while (UartReady != SET) { ... }
UartReady = RESET;
/* ... */
#else
if(HAL_UART_Receive_DMA(&UartHandle, (uint8_t *)aRxBuffer, RXBUFFERSIZE) != HAL_OK)
{
Error_Handler();
}if (HAL_UART_Receive_DMA(&UartHandle, (uint8_t *)aRxBuffer, RXBUFFERSIZE) != HAL_OK) { ... }
/* ... */
while (UartReady != SET)
{
BSP_LED_On(LED_GREEN);
HAL_Delay(100);
BSP_LED_Off(LED_GREEN);
HAL_Delay(100);
BSP_LED_On(LED_GREEN);
HAL_Delay(100);
BSP_LED_Off(LED_GREEN);
HAL_Delay(500);
}while (UartReady != SET) { ... }
UartReady = RESET;
BSP_LED_Off(LED_GREEN);
/* ... */
if(HAL_UART_Transmit_DMA(&UartHandle, (uint8_t*)aTxBuffer, TXBUFFERSIZE)!= HAL_OK)
{
Error_Handler();
}if (HAL_UART_Transmit_DMA(&UartHandle, (uint8_t*)aTxBuffer, TXBUFFERSIZE)!= HAL_OK) { ... }
/* ... */
#endif
while (UartReady != SET)
{
}while (UartReady != SET) { ... }
UartReady = RESET;
if(Buffercmp((uint8_t*)aTxBuffer,(uint8_t*)aRxBuffer,RXBUFFERSIZE))
{
Error_Handler();
}if (Buffercmp((uint8_t*)aTxBuffer,(uint8_t*)aRxBuffer,RXBUFFERSIZE)) { ... }
BSP_LED_On(LED_GREEN);
while (1)
{
}while (1) { ... }
}{ ... }
/* ... */
static void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;
HAL_StatusTypeDef ret = HAL_OK;
__HAL_RCC_PWR_CLK_ENABLE();
/* ... */
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 8;
RCC_OscInitStruct.PLL.PLLN = 200;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 7;
RCC_OscInitStruct.PLL.PLLR = 2;
ret = HAL_RCC_OscConfig(&RCC_OscInitStruct);
if(ret != HAL_OK)
{
while(1) { ; }
}if (ret != HAL_OK) { ... }
/* ... */
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_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
ret = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3);
if(ret != HAL_OK)
{
while(1) { ; }
}if (ret != HAL_OK) { ... }
}{ ... }
/* ... */
void HAL_UART_TxCpltCallback(UART_HandleTypeDef *UartHandle)
{
UartReady = SET;
#ifdef TRANSMITTER_BOARD
BSP_LED_On(LED_BLUE); /* ... */
#else
BSP_LED_Off(LED_BLUE); /* ... */
#endif
}{ ... }
/* ... */
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *UartHandle)
{
UartReady = SET;
#ifdef TRANSMITTER_BOARD
BSP_LED_Off(LED_BLUE); /* ... */
#else
BSP_LED_On(LED_BLUE);/* ... */
#endif
}{ ... }
/* ... */
void HAL_UART_ErrorCallback(UART_HandleTypeDef *UartHandle)
{
Error_Handler();
}{ ... }
/* ... */
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
if(GPIO_Pin == USER_BUTTON_PIN)
{
UserButtonStatus = 1;
}if (GPIO_Pin == USER_BUTTON_PIN) { ... }
}{ ... }
/* ... */
static uint16_t Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength)
{
while (BufferLength--)
{
if ((*pBuffer1) != *pBuffer2)
{
return BufferLength;
}if ((*pBuffer1) != *pBuffer2) { ... }
pBuffer1++;
pBuffer2++;
}while (BufferLength--) { ... }
return 0;
}{ ... }
/* ... */
static void Error_Handler(void)
{
BSP_LED_On(LED_RED);
while(1)
{
}while (1) { ... }
}{ ... }
#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
/* ... */
/* ... */