From a81fc41c3eb99e8fc52aa734ee63e13c937aab81 Mon Sep 17 00:00:00 2001 From: JanHenrik Date: Sun, 19 Jan 2020 00:56:37 +0100 Subject: added blink example --- .../Src/stm32f0xx_hal_adc_ex.c | 188 +++++++++++++++++++++ 1 file changed, 188 insertions(+) create mode 100644 Blink/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_adc_ex.c (limited to 'Blink/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_adc_ex.c') diff --git a/Blink/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_adc_ex.c b/Blink/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_adc_ex.c new file mode 100644 index 0000000..da68cbb --- /dev/null +++ b/Blink/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_adc_ex.c @@ -0,0 +1,188 @@ +/** + ****************************************************************************** + * @file stm32f0xx_hal_adc_ex.c + * @author MCD Application Team + * @brief This file provides firmware functions to manage the following + * functionalities of the Analog to Digital Convertor (ADC) + * peripheral: + * + Operation functions + * ++ Calibration (ADC automatic self-calibration) + * Other functions (generic functions) are available in file + * "stm32f0xx_hal_adc.c". + * + @verbatim + [..] + (@) Sections "ADC peripheral features" and "How to use this driver" are + available in file of generic functions "stm32l1xx_hal_adc.c". + [..] + @endverbatim + ****************************************************************************** + * @attention + * + *

© Copyright (c) 2016 STMicroelectronics. + * All rights reserved.

+ * + * This software component is licensed by ST under BSD 3-Clause license, + * the "License"; You may not use this file except in compliance with the + * License. You may obtain a copy of the License at: + * opensource.org/licenses/BSD-3-Clause + * + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f0xx_hal.h" + +/** @addtogroup STM32F0xx_HAL_Driver + * @{ + */ + +/** @defgroup ADCEx ADCEx + * @brief ADC HAL module driver + * @{ + */ + +#ifdef HAL_ADC_MODULE_ENABLED + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/** @defgroup ADCEx_Private_Constants ADCEx Private Constants + * @{ + */ + +/* Fixed timeout values for ADC calibration, enable settling time, disable */ + /* settling time. */ + /* Values defined to be higher than worst cases: low clock frequency, */ + /* maximum prescaler. */ + /* Ex of profile low frequency : Clock source at 0.1 MHz, ADC clock */ + /* prescaler 4. */ + /* Unit: ms */ + #define ADC_DISABLE_TIMEOUT 2 + #define ADC_CALIBRATION_TIMEOUT 2U +/** + * @} + */ + +/* Private macros -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/* Private functions ---------------------------------------------------------*/ + +/** @defgroup ADCEx_Exported_Functions ADCEx Exported Functions + * @{ + */ + +/** @defgroup ADCEx_Exported_Functions_Group1 Extended Initialization/de-initialization functions + * @brief Extended Initialization and Configuration functions + * +@verbatim + =============================================================================== + ##### IO operation functions ##### + =============================================================================== + [..] This section provides functions allowing to: + (+) Perform the ADC calibration. +@endverbatim + * @{ + */ + +/** + * @brief Perform an ADC automatic self-calibration + * Calibration prerequisite: ADC must be disabled (execute this + * function before HAL_ADC_Start() or after HAL_ADC_Stop() ). + * @note Calibration factor can be read after calibration, using function + * HAL_ADC_GetValue() (value on 7 bits: from DR[6;0]). + * @param hadc ADC handle + * @retval HAL status + */ +HAL_StatusTypeDef HAL_ADCEx_Calibration_Start(ADC_HandleTypeDef* hadc) +{ + HAL_StatusTypeDef tmp_hal_status = HAL_OK; + uint32_t tickstart = 0U; + uint32_t backup_setting_adc_dma_transfer = 0; /* Note: Variable not declared as volatile because register read is already declared as volatile */ + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + + /* Process locked */ + __HAL_LOCK(hadc); + + /* Calibration prerequisite: ADC must be disabled. */ + if (ADC_IS_ENABLE(hadc) == RESET) + { + /* Set ADC state */ + ADC_STATE_CLR_SET(hadc->State, + HAL_ADC_STATE_REG_BUSY, + HAL_ADC_STATE_BUSY_INTERNAL); + + /* Disable ADC DMA transfer request during calibration */ + /* Note: Specificity of this STM32 serie: Calibration factor is */ + /* available in data register and also transfered by DMA. */ + /* To not insert ADC calibration factor among ADC conversion data */ + /* in array variable, DMA transfer must be disabled during */ + /* calibration. */ + backup_setting_adc_dma_transfer = READ_BIT(hadc->Instance->CFGR1, ADC_CFGR1_DMAEN | ADC_CFGR1_DMACFG); + CLEAR_BIT(hadc->Instance->CFGR1, ADC_CFGR1_DMAEN | ADC_CFGR1_DMACFG); + + /* Start ADC calibration */ + hadc->Instance->CR |= ADC_CR_ADCAL; + + tickstart = HAL_GetTick(); + + /* Wait for calibration completion */ + while(HAL_IS_BIT_SET(hadc->Instance->CR, ADC_CR_ADCAL)) + { + if((HAL_GetTick() - tickstart) > ADC_CALIBRATION_TIMEOUT) + { + /* Update ADC state machine to error */ + ADC_STATE_CLR_SET(hadc->State, + HAL_ADC_STATE_BUSY_INTERNAL, + HAL_ADC_STATE_ERROR_INTERNAL); + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + return HAL_ERROR; + } + } + + /* Restore ADC DMA transfer request after calibration */ + SET_BIT(hadc->Instance->CFGR1, backup_setting_adc_dma_transfer); + + /* Set ADC state */ + ADC_STATE_CLR_SET(hadc->State, + HAL_ADC_STATE_BUSY_INTERNAL, + HAL_ADC_STATE_READY); + } + else + { + /* Update ADC state machine to error */ + SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_CONFIG); + + tmp_hal_status = HAL_ERROR; + } + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + /* Return function status */ + return tmp_hal_status; +} + +/** + * @} + */ + +/** + * @} + */ + +#endif /* HAL_ADC_MODULE_ENABLED */ +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ -- cgit