mirror of
https://github.com/STMicroelectronics/STM32CubeF4.git
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284 lines
8.3 KiB
C
284 lines
8.3 KiB
C
/**
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******************************************************************************
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* @file ADC/ADC_TriggerMode/Src/main.c
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* @author MCD Application Team
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* @brief This example describes how to use Timer to convert continuously data.
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2017 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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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 ADC_TriggerMode
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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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/* ADC handler declaration */
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ADC_HandleTypeDef AdcHandle;
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/* TIM handler declaration */
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static TIM_HandleTypeDef htim;
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/* Variable used to get converted value */
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__IO uint16_t uhADCxConvertedValue = 0;
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/* Private function prototypes -----------------------------------------------*/
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static void SystemClock_Config(void);
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static void Error_Handler(void);
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static void ADC_Config(void);
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static void TIM_Config(void);
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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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/* STM32F4xx HAL library initialization:
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- Configure the Flash prefetch, instruction and Data caches
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- Configure the Systick to generate an interrupt each 1 msec
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- Set NVIC Group Priority to 4
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- 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 144 MHz */
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SystemClock_Config();
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/* Configure LED3 */
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BSP_LED_Init(LED3);
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/*##-1- TIM8 Peripheral Configuration ######################################*/
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TIM_Config();
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/*##-2- Configure the ADC3 peripheral ######################################*/
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ADC_Config();
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/*##-4- Start the conversion process and enable interrupt ##################*/
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if(HAL_ADC_Start_IT(&AdcHandle) != HAL_OK)
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{
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/* Start Conversation Error */
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Error_Handler();
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}
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/*##-3- TIM8 counter enable ################################################*/
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if(HAL_TIM_Base_Start(&htim) != HAL_OK)
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{
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/* Counter Enable Error */
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Error_Handler();
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}
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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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/**
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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) = 144000000
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* HCLK(Hz) = 144000000
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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 = 288
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* PLL_P = 2
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* PLL_Q = 6
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* VDD(V) = 3.3
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* Main regulator output voltage = Scale2 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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/* 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_SCALE2);
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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 = 288;
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RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
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RCC_OscInitStruct.PLL.PLLQ = 6;
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HAL_RCC_OscConfig(&RCC_OscInitStruct);
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/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
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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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HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4);
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}
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/**
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* @brief This function is executed in case of error occurrence.
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* @param None
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* @retval None
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*/
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static void Error_Handler(void)
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{
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/* Turn LED3 on */
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BSP_LED_On(LED3);
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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 ADC configuration
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* @param None
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* @retval None
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*/
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static void ADC_Config(void)
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{
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ADC_ChannelConfTypeDef sConfig;
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/* ADC Initialization */
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AdcHandle.Instance = ADCx;
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AdcHandle.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV2;
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AdcHandle.Init.Resolution = ADC_RESOLUTION_12B;
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AdcHandle.Init.ScanConvMode = ENABLE;
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AdcHandle.Init.ContinuousConvMode = ENABLE;
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AdcHandle.Init.DiscontinuousConvMode = DISABLE;
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AdcHandle.Init.NbrOfDiscConversion = 0;
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AdcHandle.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_RISING;
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AdcHandle.Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_T8_TRGO;
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AdcHandle.Init.DataAlign = ADC_DATAALIGN_RIGHT;
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AdcHandle.Init.NbrOfConversion = 1;
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AdcHandle.Init.DMAContinuousRequests = ENABLE;
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AdcHandle.Init.EOCSelection = ADC_EOC_SEQ_CONV;
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if(HAL_ADC_Init(&AdcHandle) != HAL_OK)
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{
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/* ADC Initialization Error */
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Error_Handler();
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}
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/* Configure ADC3 regular channel */
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sConfig.Channel = ADCx_CHANNEL;
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sConfig.Rank = 1;
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sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
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sConfig.Offset = 0;
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if(HAL_ADC_ConfigChannel(&AdcHandle, &sConfig) != HAL_OK)
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{
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/* Channel Configuration Error */
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Error_Handler();
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}
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}
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/**
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* @brief TIM configuration
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* @param None
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* @retval None
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*/
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static void TIM_Config(void)
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{
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TIM_MasterConfigTypeDef sMasterConfig;
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/* Time Base configuration */
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htim.Instance = TIMx;
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htim.Init.Period = 0x3C;
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htim.Init.Prescaler = 0;
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htim.Init.ClockDivision = 0;
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htim.Init.CounterMode = TIM_COUNTERMODE_UP;
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htim.Init.RepetitionCounter = 0;
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if(HAL_TIM_Base_Init(&htim) != HAL_OK)
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{
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/* TIM8 Initialization Error */
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Error_Handler();
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}
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/* TIM8 TRGO selection */
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sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE;
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sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
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if(HAL_TIMEx_MasterConfigSynchronization(&htim, &sMasterConfig) != HAL_OK)
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{
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/* TIM8 TRGO selection Error */
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Error_Handler();
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}
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}
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/**
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* @brief Conversion complete callback in non blocking mode
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* @param AdcHandle : AdcHandle handle
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* @note This example shows a simple way to report end of conversion, and
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* you can add your own implementation.
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* @retval None
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*/
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void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* AdcHandle)
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{
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/* Get the converted value of regular channel */
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uhADCxConvertedValue = HAL_ADC_GetValue(AdcHandle);
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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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