mirror of
https://github.com/STMicroelectronics/STM32CubeF4.git
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292 lines
9.7 KiB
C
292 lines
9.7 KiB
C
/**
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******************************************************************************
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* @file DCMI/DCMI_SnapshotMode/Src/main.c
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* @author MCD Application Team
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* @brief This example describe how to configure the camera interface (DCMI) in snapshot
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* mode to handle a single image capture in QVGA (320x240) resolution and RGB565
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* format and display the obtained image on LCD screen.
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******************************************************************************
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* @attention
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*
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* <h2><center>© Copyright (c) 2017 STMicroelectronics.
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* All rights reserved.</center></h2>
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*
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* This software component is licensed by ST under BSD 3-Clause license,
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* the "License"; You may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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* opensource.org/licenses/BSD-3-Clause
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "main.h"
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/** @addtogroup STM32F4xx_HAL_Examples
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* @{
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*/
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/** @addtogroup DCMI_SnapshotMode
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* @{
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*/
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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__IO uint32_t frame_buffer_ready = 0;
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/* Private function prototypes -----------------------------------------------*/
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static void SystemClock_Config(void);
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static void LCD_LL_ConvertFrameToARGB8888(uint32_t pSrc, uint32_t pDst);
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static void OnError_Handler(uint32_t condition);
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/* Private functions ---------------------------------------------------------*/
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/**
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* @brief Main program
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* @param None
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* @retval None
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*/
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int main(void)
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{
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uint8_t lcd_status = LCD_OK;
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/* STM32F4xx HAL library initialization:
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- Configure the Flash prefetch, instruction and Data caches
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- Systick timer is configured by default as source of time base, but user
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can eventually implement his proper time base source (a general purpose
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timer for example or other time source), keeping in mind that Time base
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duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
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handled in milliseconds basis.
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- Set NVIC Group Priority to 4
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- Low Level Initialization: global MSP (MCU Support Package) initialization
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*/
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HAL_Init();
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/* Configure the system clock to 180 MHz */
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SystemClock_Config();
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/* Initialize used Leds */
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BSP_LED_Init(LED1);
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BSP_LED_Init(LED3);
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/*##-1- Initialise the LCD #################################################*/
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/* Initialize and start the LCD display in mode LCD_MODE_ADAPTED_COMMAND_TE_DSI_LINK
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* and orientation mode LCD_ORIENTATION_LANDSCAPE, using LCD_FRAME_BUFFER
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* as LCD frame buffer address.
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*/
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BSP_LCD_Init();
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BSP_LCD_LayerDefaultInit(0, LCD_FRAME_BUFFER);
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OnError_Handler(lcd_status != LCD_OK);
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/* Prepare using DMA2D the 800x480 LCD frame buffer to display background color black */
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/* and title of the example */
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BSP_LCD_Clear(LCD_COLOR_BLACK);
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BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
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BSP_LCD_SetBackColor(LCD_COLOR_BLUE);
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BSP_LCD_SetFont(&Font16);
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/* Print example description */
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BSP_LCD_DisplayStringAt(0, 440, (uint8_t *)"DCMI Snapshot example", CENTER_MODE);
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BSP_LCD_DisplayStringAt(0, 460, (uint8_t *)"Initialize Camera", CENTER_MODE);
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/*##-2- Camera Initialization and start capture ############################*/
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/* Initialize the Camera in QVGA mode */
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BSP_CAMERA_Init(CAMERA_R320x240);
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/* Wait 1s to let auto-loops in the camera module converge and lead to correct exposure */
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HAL_Delay(1000);
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/* Start the Camera Snapshot Capture */
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BSP_CAMERA_SnapshotStart((uint8_t *)CAMERA_FRAME_BUFFER);
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/* Wait until frame buffer is ready */
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while(frame_buffer_ready == 0) {;}
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/* Convert captured frame to ARGB8888 */
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LCD_LL_ConvertFrameToARGB8888((uint32_t)CAMERA_FRAME_BUFFER, (uint32_t)LCD_FRAME_BUFFER);
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BSP_LCD_ClearStringLine(460);
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BSP_LCD_DisplayStringAt(0, 460, (uint8_t *)"Capture OK - Test End", CENTER_MODE);
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/* Notify Test OK */
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BSP_LED_On(LED1);
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while (1)
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{
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}
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}
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/**
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* @brief Camera Frame Event callback.
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*/
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void BSP_CAMERA_FrameEventCallback(void)
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{
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frame_buffer_ready = 1;
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}
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/**
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* @brief Converts an RGB565 camera frame buffer into a ARGB8888 LCD Frame buffer.
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* @param pSrc: Pointer to source buffer in Camera frame buffer
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* @param pDst: Pointer to destination buffer in LCD frame buffer
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* @retval None
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*/
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static void LCD_LL_ConvertFrameToARGB8888(uint32_t pSrc, uint32_t pDst)
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{
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DMA2D_HandleTypeDef hdma2d_eval;
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uint32_t offset_lcd = 0;
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HAL_StatusTypeDef status;
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/* Set display in the middle of the screen */
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offset_lcd = ((((LcdResY - CameraResY) / 2) * LcdResX) /* Middle of the screen on Y axis */
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+ ((LcdResX - CameraResX) / 2)) /* Middle of the screen on X axis */
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* ARGB8888_BYTE_PER_PIXEL;
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/* Configure the DMA2D Mode, Color Mode and output offset */
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hdma2d_eval.Init.Mode = DMA2D_M2M_PFC;
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hdma2d_eval.Init.ColorMode = DMA2D_ARGB8888; /* Output color out of PFC */
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hdma2d_eval.Init.OutputOffset = (LcdResX - CameraResX);
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/* Foreground Configuration */
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hdma2d_eval.LayerCfg[1].AlphaMode = DMA2D_NO_MODIF_ALPHA;
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hdma2d_eval.LayerCfg[1].InputAlpha = 0xFF; /* fully opaque */
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hdma2d_eval.LayerCfg[1].InputColorMode = DMA2D_INPUT_RGB565;
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hdma2d_eval.LayerCfg[1].InputOffset = 0;
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hdma2d_eval.Instance = DMA2D;
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/* DMA2D Initialization */
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status = HAL_DMA2D_Init(&hdma2d_eval);
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OnError_Handler(status != HAL_OK);
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status = HAL_DMA2D_ConfigLayer(&hdma2d_eval, 1);
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OnError_Handler(status != HAL_OK);
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/* Convert frame to ARGB8888 pixels */
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if (HAL_DMA2D_Start(&hdma2d_eval, (uint32_t)pSrc, (uint32_t)(pDst + offset_lcd), CameraResX, CameraResY) == HAL_OK)
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{
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/* Polling For DMA transfer */
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HAL_DMA2D_PollForTransfer(&hdma2d_eval, 10);
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}
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}
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/**
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* @brief On Error Handler on condition TRUE.
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* @param condition : Can be TRUE or FALSE
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* @retval None
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*/
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static void OnError_Handler(uint32_t condition)
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{
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if(condition)
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{
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BSP_LED_On(LED3);
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while(1) { ; } /* Blocking on error */
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}
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}
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/**
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* @brief System Clock Configuration
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* The system Clock is configured as follow :
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* System Clock source = PLL (HSE)
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* SYSCLK(Hz) = 180000000
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* HCLK(Hz) = 180000000
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* AHB Prescaler = 1
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* APB1 Prescaler = 4
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* APB2 Prescaler = 2
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* HSE Frequency(Hz) = 25000000
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* PLL_M = 25
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* PLL_N = 360
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* PLL_P = 2
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* PLL_Q = 7
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* PLL_R = 6
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* VDD(V) = 3.3
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* Main regulator output voltage = Scale1 mode
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* Flash Latency(WS) = 5
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* @param None
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* @retval None
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*/
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static void SystemClock_Config(void)
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{
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RCC_ClkInitTypeDef RCC_ClkInitStruct;
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RCC_OscInitTypeDef RCC_OscInitStruct;
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HAL_StatusTypeDef ret = HAL_OK;
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/* Enable Power Control clock */
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__HAL_RCC_PWR_CLK_ENABLE();
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/* The voltage scaling allows optimizing the power consumption when the device is
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clocked below the maximum system frequency, to update the voltage scaling value
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regarding system frequency refer to product datasheet. */
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__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
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/* Enable HSE Oscillator and activate PLL with HSE as source */
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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RCC_OscInitStruct.HSEState = RCC_HSE_ON;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
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RCC_OscInitStruct.PLL.PLLM = 25;
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RCC_OscInitStruct.PLL.PLLN = 360;
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RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
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RCC_OscInitStruct.PLL.PLLQ = 7;
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RCC_OscInitStruct.PLL.PLLR = 6;
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ret = HAL_RCC_OscConfig(&RCC_OscInitStruct);
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if(ret != HAL_OK)
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{
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while(1) { ; }
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}
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/* Activate the OverDrive to reach the 180 MHz Frequency */
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ret = HAL_PWREx_EnableOverDrive();
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if(ret != HAL_OK)
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{
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while(1) { ; }
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}
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/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers */
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RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
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ret = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
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if(ret != HAL_OK)
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{
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while(1) { ; }
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}
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file: pointer to the source file name
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* @param line: assert_param error line source number
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* @retval None
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*/
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void assert_failed(uint8_t *file, uint32_t line)
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{
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/* User can add his own implementation to report the file name and line number,
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ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* Infinite loop */
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while (1)
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{
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}
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}
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#endif
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/**
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* @}
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*/
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/**
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* @}
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*/
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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