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https://github.com/STMicroelectronics/STM32CubeF7.git
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264 lines
8.1 KiB
C
264 lines
8.1 KiB
C
/**
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******************************************************************************
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* @file ADC/ADC_RegularConversion_Interrupt/Src/main.c
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* @author MCD Application Team
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* @brief This example describes how to use an Interrupt to convert
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* continuously data
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******************************************************************************
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* @attention
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*
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* <h2><center>© Copyright (c) 2016 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 STM32F7xx_HAL_Examples
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* @{
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*/
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/** @addtogroup ADC_RegularConversion_Interrupt
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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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/* 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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void SystemClock_Config(void);
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static void CPU_CACHE_Enable(void);
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static void Error_Handler(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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ADC_ChannelConfTypeDef sConfig;
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/* Enable the CPU Cache */
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CPU_CACHE_Enable();
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/* STM32F7xx HAL library initialization:
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- Configure the Flash ART accelerator
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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
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*/
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HAL_Init();
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/* Configure LED5 */
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BSP_LED_Init(LED5);
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/* Configure the system clock to 216 MHz */
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SystemClock_Config();
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/*##-1- Configure the ADC peripheral #######################################*/
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AdcHandle.Instance = ADCx;
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if (HAL_ADC_DeInit(&AdcHandle) != HAL_OK)
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{
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/* ADC de-initialization Error */
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Error_Handler();
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}
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AdcHandle.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV4;
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AdcHandle.Init.Resolution = ADC_RESOLUTION_12B;
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AdcHandle.Init.ScanConvMode = DISABLE; /* Sequencer disabled (ADC conversion on only 1 channel: channel set on rank 1) */
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AdcHandle.Init.ContinuousConvMode = ENABLE; /* Continuous mode disabled to have only 1 conversion at each conversion trig */
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AdcHandle.Init.DiscontinuousConvMode = DISABLE; /* Parameter discarded because sequencer is disabled */
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AdcHandle.Init.NbrOfDiscConversion = 0;
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AdcHandle.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE; /* Conversion start trigged at each external event */
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AdcHandle.Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_T1_CC1;
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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 = DISABLE;
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AdcHandle.Init.EOCSelection = DISABLE;
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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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/*##-2- Configure ADC regular channel ######################################*/
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sConfig.Channel = ADC_CHANNEL_8;
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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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/*##-3- Start the conversion process #######################################*/
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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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/* 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) = 216000000
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* HCLK(Hz) = 216000000
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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 = 432
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* PLL_P = 2
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* PLL_Q = 9
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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) = 7
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* @param None
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* @retval None
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*/
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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 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 = 432;
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RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
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RCC_OscInitStruct.PLL.PLLQ = 9;
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if(HAL_RCC_OscConfig(&RCC_OscInitStruct) != 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 216 Mhz Frequency */
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if(HAL_PWREx_EnableOverDrive() != 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
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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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if(HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_7) != HAL_OK)
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{
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while(1) {};
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}
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}
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/**
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* @brief CPU L1-Cache enable.
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* @param None
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* @retval None
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*/
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static void CPU_CACHE_Enable(void)
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{
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/* Enable I-Cache */
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SCB_EnableICache();
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/* Enable D-Cache */
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SCB_EnableDCache();
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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 LED5 on */
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BSP_LED_On(LED5);
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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 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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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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