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view Common/Drivers/STM32F4xx_HAL_DRIVER_v120/Src/stm32f4xx_hal_adc.c @ 101:83feba2ad1c3 kittz
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author | Dmitry Romanov <kitt@bk.ru> |
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date | Tue, 27 Nov 2018 13:18:59 +0300 |
parents | 5f11787b4f42 |
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/** ****************************************************************************** * @file stm32f4xx_hal_adc.c * @author MCD Application Team * @version V1.2.0 * @date 26-December-2014 * @brief This file provides firmware functions to manage the following * functionalities of the Analog to Digital Convertor (ADC) peripheral: * + Initialization and de-initialization functions * + IO operation functions * + State and errors functions * @verbatim ============================================================================== ##### ADC Peripheral features ##### ============================================================================== [..] (#) 12-bit, 10-bit, 8-bit or 6-bit configurable resolution. (#) Interrupt generation at the end of conversion, end of injected conversion, and in case of analog watchdog or overrun events (#) Single and continuous conversion modes. (#) Scan mode for automatic conversion of channel 0 to channel x. (#) Data alignment with in-built data coherency. (#) Channel-wise programmable sampling time. (#) External trigger option with configurable polarity for both regular and injected conversion. (#) Dual/Triple mode (on devices with 2 ADCs or more). (#) Configurable DMA data storage in Dual/Triple ADC mode. (#) Configurable delay between conversions in Dual/Triple interleaved mode. (#) ADC conversion type (refer to the datasheets). (#) ADC supply requirements: 2.4 V to 3.6 V at full speed and down to 1.8 V at slower speed. (#) ADC input range: VREF(minus) = VIN = VREF(plus). (#) DMA request generation during regular channel conversion. ##### How to use this driver ##### ============================================================================== [..] (#)Initialize the ADC low level resources by implementing the HAL_ADC_MspInit(): (##) Enable the ADC interface clock using __HAL_RCC_ADC_CLK_ENABLE() (##) ADC pins configuration (+++) Enable the clock for the ADC GPIOs using the following function: __HAL_RCC_GPIOx_CLK_ENABLE() (+++) Configure these ADC pins in analog mode using HAL_GPIO_Init() (##) In case of using interrupts (e.g. HAL_ADC_Start_IT()) (+++) Configure the ADC interrupt priority using HAL_NVIC_SetPriority() (+++) Enable the ADC IRQ handler using HAL_NVIC_EnableIRQ() (+++) In ADC IRQ handler, call HAL_ADC_IRQHandler() (##) In case of using DMA to control data transfer (e.g. HAL_ADC_Start_DMA()) (+++) Enable the DMAx interface clock using __HAL_RCC_DMAx_CLK_ENABLE() (+++) Configure and enable two DMA streams stream for managing data transfer from peripheral to memory (output stream) (+++) Associate the initialized DMA handle to the CRYP DMA handle using __HAL_LINKDMA() (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on the two DMA Streams. The output stream should have higher priority than the input stream. (#) Configure the ADC Prescaler, conversion resolution and data alignment using the HAL_ADC_Init() function. (#) Configure the ADC regular channels group features, use HAL_ADC_Init() and HAL_ADC_ConfigChannel() functions. (#) Three operation modes are available within this driver : *** Polling mode IO operation *** ================================= [..] (+) Start the ADC peripheral using HAL_ADC_Start() (+) Wait for end of conversion using HAL_ADC_PollForConversion(), at this stage user can specify the value of timeout according to his end application (+) To read the ADC converted values, use the HAL_ADC_GetValue() function. (+) Stop the ADC peripheral using HAL_ADC_Stop() *** Interrupt mode IO operation *** =================================== [..] (+) Start the ADC peripheral using HAL_ADC_Start_IT() (+) Use HAL_ADC_IRQHandler() called under ADC_IRQHandler() Interrupt subroutine (+) At ADC end of conversion HAL_ADC_ConvCpltCallback() function is executed and user can add his own code by customization of function pointer HAL_ADC_ConvCpltCallback (+) In case of ADC Error, HAL_ADC_ErrorCallback() function is executed and user can add his own code by customization of function pointer HAL_ADC_ErrorCallback (+) Stop the ADC peripheral using HAL_ADC_Stop_IT() *** DMA mode IO operation *** ============================== [..] (+) Start the ADC peripheral using HAL_ADC_Start_DMA(), at this stage the user specify the length of data to be transferred at each end of conversion (+) At The end of data transfer by HAL_ADC_ConvCpltCallback() function is executed and user can add his own code by customization of function pointer HAL_ADC_ConvCpltCallback (+) In case of transfer Error, HAL_ADC_ErrorCallback() function is executed and user can add his own code by customization of function pointer HAL_ADC_ErrorCallback (+) Stop the ADC peripheral using HAL_ADC_Stop_DMA() *** ADC HAL driver macros list *** ============================================= [..] Below the list of most used macros in ADC HAL driver. (+) __HAL_ADC_ENABLE : Enable the ADC peripheral (+) __HAL_ADC_DISABLE : Disable the ADC peripheral (+) __HAL_ADC_ENABLE_IT: Enable the ADC end of conversion interrupt (+) __HAL_ADC_DISABLE_IT: Disable the ADC end of conversion interrupt (+) __HAL_ADC_GET_IT_SOURCE: Check if the specified ADC interrupt source is enabled or disabled (+) __HAL_ADC_CLEAR_FLAG: Clear the ADC's pending flags (+) __HAL_ADC_GET_FLAG: Get the selected ADC's flag status (+) ADC_GET_RESOLUTION: Return resolution bits in CR1 register [..] (@) You can refer to the ADC HAL driver header file for more useful macros @endverbatim ****************************************************************************** * @attention * * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2> * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. Neither the name of STMicroelectronics nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "stm32f4xx_hal.h" /** @addtogroup STM32F4xx_HAL_Driver * @{ */ /** @defgroup ADC ADC * @brief ADC driver modules * @{ */ #ifdef HAL_ADC_MODULE_ENABLED /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ /** @addtogroup ADC_Private_Functions * @{ */ /* Private function prototypes -----------------------------------------------*/ static void ADC_Init(ADC_HandleTypeDef* hadc); static void ADC_DMAConvCplt(DMA_HandleTypeDef *hdma); static void ADC_DMAError(DMA_HandleTypeDef *hdma); static void ADC_DMAHalfConvCplt(DMA_HandleTypeDef *hdma); /** * @} */ /* Exported functions --------------------------------------------------------*/ /** @defgroup ADC_Exported_Functions ADC Exported Functions * @{ */ /** @defgroup ADC_Exported_Functions_Group1 Initialization and de-initialization functions * @brief Initialization and Configuration functions * @verbatim =============================================================================== ##### Initialization and de-initialization functions ##### =============================================================================== [..] This section provides functions allowing to: (+) Initialize and configure the ADC. (+) De-initialize the ADC. @endverbatim * @{ */ /** * @brief Initializes the ADCx peripheral according to the specified parameters * in the ADC_InitStruct and initializes the ADC MSP. * * @note This function is used to configure the global features of the ADC ( * ClockPrescaler, Resolution, Data Alignment and number of conversion), however, * the rest of the configuration parameters are specific to the regular * channels group (scan mode activation, continuous mode activation, * External trigger source and edge, DMA continuous request after the * last transfer and End of conversion selection). * * @param hadc: pointer to a ADC_HandleTypeDef structure that contains * the configuration information for the specified ADC. * @retval HAL status */ HAL_StatusTypeDef HAL_ADC_Init(ADC_HandleTypeDef* hadc) { /* Check ADC handle */ if(hadc == NULL) { return HAL_ERROR; } /* Check the parameters */ assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); assert_param(IS_ADC_CLOCKPRESCALER(hadc->Init.ClockPrescaler)); assert_param(IS_ADC_RESOLUTION(hadc->Init.Resolution)); assert_param(IS_FUNCTIONAL_STATE(hadc->Init.ScanConvMode)); assert_param(IS_FUNCTIONAL_STATE(hadc->Init.ContinuousConvMode)); assert_param(IS_ADC_EXT_TRIG_EDGE(hadc->Init.ExternalTrigConvEdge)); assert_param(IS_ADC_EXT_TRIG(hadc->Init.ExternalTrigConv)); assert_param(IS_ADC_DATA_ALIGN(hadc->Init.DataAlign)); assert_param(IS_ADC_REGULAR_LENGTH(hadc->Init.NbrOfConversion)); assert_param(IS_FUNCTIONAL_STATE(hadc->Init.DMAContinuousRequests)); assert_param(IS_ADC_EOCSelection(hadc->Init.EOCSelection)); assert_param(IS_FUNCTIONAL_STATE(hadc->Init.DiscontinuousConvMode)); if(hadc->State == HAL_ADC_STATE_RESET) { /* Init the low level hardware */ HAL_ADC_MspInit(hadc); } /* Initialize the ADC state */ hadc->State = HAL_ADC_STATE_BUSY; /* Set ADC parameters */ ADC_Init(hadc); /* Set ADC error code to none */ hadc->ErrorCode = HAL_ADC_ERROR_NONE; /* Initialize the ADC state */ hadc->State = HAL_ADC_STATE_READY; /* Release Lock */ __HAL_UNLOCK(hadc); /* Return function status */ return HAL_OK; } /** * @brief Deinitializes the ADCx peripheral registers to their default reset values. * @param hadc: pointer to a ADC_HandleTypeDef structure that contains * the configuration information for the specified ADC. * @retval HAL status */ HAL_StatusTypeDef HAL_ADC_DeInit(ADC_HandleTypeDef* hadc) { /* Check ADC handle */ if(hadc == NULL) { return HAL_ERROR; } /* Check the parameters */ assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); /* Change ADC state */ hadc->State = HAL_ADC_STATE_BUSY; /* DeInit the low level hardware */ HAL_ADC_MspDeInit(hadc); /* Set ADC error code to none */ hadc->ErrorCode = HAL_ADC_ERROR_NONE; /* Change ADC state */ hadc->State = HAL_ADC_STATE_RESET; /* Return function status */ return HAL_OK; } /** * @brief Initializes the ADC MSP. * @param hadc: pointer to a ADC_HandleTypeDef structure that contains * the configuration information for the specified ADC. * @retval None */ __weak void HAL_ADC_MspInit(ADC_HandleTypeDef* hadc) { /* NOTE : This function Should not be modified, when the callback is needed, the HAL_ADC_MspInit could be implemented in the user file */ } /** * @brief DeInitializes the ADC MSP. * @param hadc: pointer to a ADC_HandleTypeDef structure that contains * the configuration information for the specified ADC. * @retval None */ __weak void HAL_ADC_MspDeInit(ADC_HandleTypeDef* hadc) { /* NOTE : This function Should not be modified, when the callback is needed, the HAL_ADC_MspDeInit could be implemented in the user file */ } /** * @} */ /** @defgroup ADC_Exported_Functions_Group2 IO operation functions * @brief IO operation functions * @verbatim =============================================================================== ##### IO operation functions ##### =============================================================================== [..] This section provides functions allowing to: (+) Start conversion of regular channel. (+) Stop conversion of regular channel. (+) Start conversion of regular channel and enable interrupt. (+) Stop conversion of regular channel and disable interrupt. (+) Start conversion of regular channel and enable DMA transfer. (+) Stop conversion of regular channel and disable DMA transfer. (+) Handle ADC interrupt request. @endverbatim * @{ */ /** * @brief Enables ADC and starts conversion of the regular channels. * @param hadc: pointer to a ADC_HandleTypeDef structure that contains * the configuration information for the specified ADC. * @retval HAL status */ HAL_StatusTypeDef HAL_ADC_Start(ADC_HandleTypeDef* hadc) { uint16_t i = 0; /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(hadc->Init.ContinuousConvMode)); assert_param(IS_ADC_EXT_TRIG_EDGE(hadc->Init.ExternalTrigConvEdge)); /* Process locked */ __HAL_LOCK(hadc); /* Check if an injected conversion is ongoing */ if(hadc->State == HAL_ADC_STATE_BUSY_INJ) { /* Change ADC state */ hadc->State = HAL_ADC_STATE_BUSY_INJ_REG; } else { /* Change ADC state */ hadc->State = HAL_ADC_STATE_BUSY_REG; } /* Check if ADC peripheral is disabled in order to enable it and wait during Tstab time the ADC's stabilization */ if((hadc->Instance->CR2 & ADC_CR2_ADON) != ADC_CR2_ADON) { /* Enable the Peripheral */ __HAL_ADC_ENABLE(hadc); /* Delay inserted to wait during Tstab time the ADC's stabilization */ for(; i <= 540; i++) { __NOP(); } } /* Check if Multimode enabled */ if(HAL_IS_BIT_CLR(ADC->CCR, ADC_CCR_MULTI)) { /* if no external trigger present enable software conversion of regular channels */ if(hadc->Init.ExternalTrigConvEdge == ADC_EXTERNALTRIGCONVEDGE_NONE) { /* Enable the selected ADC software conversion for regular group */ hadc->Instance->CR2 |= (uint32_t)ADC_CR2_SWSTART; } } else { /* if instance of handle correspond to ADC1 and no external trigger present enable software conversion of regular channels */ if((hadc->Instance == ADC1) && (hadc->Init.ExternalTrigConvEdge == ADC_EXTERNALTRIGCONVEDGE_NONE)) { /* Enable the selected ADC software conversion for regular group */ hadc->Instance->CR2 |= (uint32_t)ADC_CR2_SWSTART; } } /* Process unlocked */ __HAL_UNLOCK(hadc); /* Return function status */ return HAL_OK; } /** * @brief Disables ADC and stop conversion of regular channels. * * @note Caution: This function will stop also injected channels. * * @param hadc: pointer to a ADC_HandleTypeDef structure that contains * the configuration information for the specified ADC. * * @retval HAL status. */ HAL_StatusTypeDef HAL_ADC_Stop(ADC_HandleTypeDef* hadc) { /* Disable the Peripheral */ __HAL_ADC_DISABLE(hadc); /* Change ADC state */ hadc->State = HAL_ADC_STATE_READY; /* Return function status */ return HAL_OK; } /** * @brief Poll for regular conversion complete * @param hadc: pointer to a ADC_HandleTypeDef structure that contains * the configuration information for the specified ADC. * @param Timeout: Timeout value in millisecond. * @retval HAL status */ HAL_StatusTypeDef HAL_ADC_PollForConversion(ADC_HandleTypeDef* hadc, uint32_t Timeout) { uint32_t tickstart = 0; /* Get tick */ tickstart = HAL_GetTick(); /* Check End of conversion flag */ while(!(__HAL_ADC_GET_FLAG(hadc, ADC_FLAG_EOC))) { /* Check for the Timeout */ if(Timeout != HAL_MAX_DELAY) { if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) { hadc->State= HAL_ADC_STATE_TIMEOUT; /* Process unlocked */ __HAL_UNLOCK(hadc); return HAL_TIMEOUT; } } } /* Check if an injected conversion is ready */ if(hadc->State == HAL_ADC_STATE_EOC_INJ) { /* Change ADC state */ hadc->State = HAL_ADC_STATE_EOC_INJ_REG; } else { /* Change ADC state */ hadc->State = HAL_ADC_STATE_EOC_REG; } /* Return ADC state */ return HAL_OK; } /** * @brief Poll for conversion event * @param hadc: pointer to a ADC_HandleTypeDef structure that contains * the configuration information for the specified ADC. * @param EventType: the ADC event type. * This parameter can be one of the following values: * @arg ADC_AWD_EVENT: ADC Analog watch Dog event. * @arg ADC_OVR_EVENT: ADC Overrun event. * @param Timeout: Timeout value in millisecond. * @retval HAL status */ HAL_StatusTypeDef HAL_ADC_PollForEvent(ADC_HandleTypeDef* hadc, uint32_t EventType, uint32_t Timeout) { uint32_t tickstart = 0; /* Check the parameters */ assert_param(IS_ADC_EVENT_TYPE(EventType)); /* Get tick */ tickstart = HAL_GetTick(); /* Check selected event flag */ while(!(__HAL_ADC_GET_FLAG(hadc,EventType))) { /* Check for the Timeout */ if(Timeout != HAL_MAX_DELAY) { if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) { hadc->State= HAL_ADC_STATE_TIMEOUT; /* Process unlocked */ __HAL_UNLOCK(hadc); return HAL_TIMEOUT; } } } /* Check analog watchdog flag */ if(EventType == ADC_AWD_EVENT) { /* Change ADC state */ hadc->State = HAL_ADC_STATE_AWD; /* Clear the ADCx's analog watchdog flag */ __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_AWD); } else { /* Change ADC state */ hadc->State = HAL_ADC_STATE_ERROR; /* Clear the ADCx's Overrun flag */ __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_OVR); } /* Return ADC state */ return HAL_OK; } /** * @brief Enables the interrupt and starts ADC conversion of regular channels. * @param hadc: pointer to a ADC_HandleTypeDef structure that contains * the configuration information for the specified ADC. * @retval HAL status. */ HAL_StatusTypeDef HAL_ADC_Start_IT(ADC_HandleTypeDef* hadc) { uint16_t i = 0; /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(hadc->Init.ContinuousConvMode)); assert_param(IS_ADC_EXT_TRIG_EDGE(hadc->Init.ExternalTrigConvEdge)); /* Process locked */ __HAL_LOCK(hadc); /* Check if an injected conversion is ongoing */ if(hadc->State == HAL_ADC_STATE_BUSY_INJ) { /* Change ADC state */ hadc->State = HAL_ADC_STATE_BUSY_INJ_REG; } else { /* Change ADC state */ hadc->State = HAL_ADC_STATE_BUSY_REG; } /* Set ADC error code to none */ hadc->ErrorCode = HAL_ADC_ERROR_NONE; /* Check if ADC peripheral is disabled in order to enable it and wait during Tstab time the ADC's stabilization */ if((hadc->Instance->CR2 & ADC_CR2_ADON) != ADC_CR2_ADON) { /* Enable the Peripheral */ __HAL_ADC_ENABLE(hadc); /* Delay inserted to wait during Tstab time the ADC's stabilization */ for(; i <= 540; i++) { __NOP(); } } /* Enable the ADC overrun interrupt */ __HAL_ADC_ENABLE_IT(hadc, ADC_IT_OVR); /* Enable the ADC end of conversion interrupt for regular group */ __HAL_ADC_ENABLE_IT(hadc, ADC_IT_EOC); /* Check if Multimode enabled */ if(HAL_IS_BIT_CLR(ADC->CCR, ADC_CCR_MULTI)) { /* if no external trigger present enable software conversion of regular channels */ if (hadc->Init.ExternalTrigConvEdge == ADC_EXTERNALTRIGCONVEDGE_NONE) { /* Enable the selected ADC software conversion for regular group */ hadc->Instance->CR2 |= (uint32_t)ADC_CR2_SWSTART; } } else { /* if instance of handle correspond to ADC1 and no external trigger present enable software conversion of regular channels */ if ((hadc->Instance == (ADC_TypeDef*)0x40012000) && (hadc->Init.ExternalTrigConvEdge == ADC_EXTERNALTRIGCONVEDGE_NONE)) { /* Enable the selected ADC software conversion for regular group */ hadc->Instance->CR2 |= (uint32_t)ADC_CR2_SWSTART; } } /* Process unlocked */ __HAL_UNLOCK(hadc); /* Return function status */ return HAL_OK; } /** * @brief Disables the interrupt and stop ADC conversion of regular channels. * * @note Caution: This function will stop also injected channels. * * @param hadc: pointer to a ADC_HandleTypeDef structure that contains * the configuration information for the specified ADC. * @retval HAL status. */ HAL_StatusTypeDef HAL_ADC_Stop_IT(ADC_HandleTypeDef* hadc) { /* Disable the ADC end of conversion interrupt for regular group */ __HAL_ADC_DISABLE_IT(hadc, ADC_IT_EOC); /* Disable the ADC end of conversion interrupt for injected group */ __HAL_ADC_DISABLE_IT(hadc, ADC_CR1_JEOCIE); /* Enable the Peripheral */ __HAL_ADC_DISABLE(hadc); /* Change ADC state */ hadc->State = HAL_ADC_STATE_READY; /* Return function status */ return HAL_OK; } /** * @brief Handles ADC interrupt request * @param hadc: pointer to a ADC_HandleTypeDef structure that contains * the configuration information for the specified ADC. * @retval None */ void HAL_ADC_IRQHandler(ADC_HandleTypeDef* hadc) { uint32_t tmp1 = 0, tmp2 = 0; /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(hadc->Init.ContinuousConvMode)); assert_param(IS_ADC_REGULAR_LENGTH(hadc->Init.NbrOfConversion)); assert_param(IS_ADC_EOCSelection(hadc->Init.EOCSelection)); tmp1 = __HAL_ADC_GET_FLAG(hadc, ADC_FLAG_EOC); tmp2 = __HAL_ADC_GET_IT_SOURCE(hadc, ADC_IT_EOC); /* Check End of conversion flag for regular channels */ if(tmp1 && tmp2) { /* Check if an injected conversion is ready */ if(hadc->State == HAL_ADC_STATE_EOC_INJ) { /* Change ADC state */ hadc->State = HAL_ADC_STATE_EOC_INJ_REG; } else { /* Change ADC state */ hadc->State = HAL_ADC_STATE_EOC_REG; } if((hadc->Init.ContinuousConvMode == DISABLE) && (hadc->Init.ExternalTrigConvEdge == ADC_EXTERNALTRIGCONVEDGE_NONE)) { if(hadc->Init.EOCSelection == ADC_EOC_SEQ_CONV) { /* DISABLE the ADC end of conversion interrupt for regular group */ __HAL_ADC_DISABLE_IT(hadc, ADC_IT_EOC); /* DISABLE the ADC overrun interrupt */ __HAL_ADC_DISABLE_IT(hadc, ADC_IT_OVR); } else { if (hadc->NbrOfCurrentConversionRank == 0) { hadc->NbrOfCurrentConversionRank = hadc->Init.NbrOfConversion; } /* Decrement the number of conversion when an interrupt occurs */ hadc->NbrOfCurrentConversionRank--; /* Check if all conversions are finished */ if(hadc->NbrOfCurrentConversionRank == 0) { /* DISABLE the ADC end of conversion interrupt for regular group */ __HAL_ADC_DISABLE_IT(hadc, ADC_IT_EOC); /* DISABLE the ADC overrun interrupt */ __HAL_ADC_DISABLE_IT(hadc, ADC_IT_OVR); } } } /* Conversion complete callback */ HAL_ADC_ConvCpltCallback(hadc); /* Clear the ADCx flag for regular end of conversion */ __HAL_ADC_CLEAR_FLAG(hadc,ADC_FLAG_EOC); } tmp1 = __HAL_ADC_GET_FLAG(hadc, ADC_FLAG_JEOC); tmp2 = __HAL_ADC_GET_IT_SOURCE(hadc, ADC_IT_JEOC); /* Check End of conversion flag for injected channels */ if(tmp1 && tmp2) { /* Check if a regular conversion is ready */ if(hadc->State == HAL_ADC_STATE_EOC_REG) { /* Change ADC state */ hadc->State = HAL_ADC_STATE_EOC_INJ_REG; } else { /* Change ADC state */ hadc->State = HAL_ADC_STATE_EOC_INJ; } tmp1 = HAL_IS_BIT_CLR(hadc->Instance->CR1, ADC_CR1_JAUTO); tmp2 = HAL_IS_BIT_CLR(hadc->Instance->CR2, ADC_CR2_JEXTEN); if(((hadc->Init.ContinuousConvMode == DISABLE) || tmp1) && tmp2) { /* DISABLE the ADC end of conversion interrupt for injected group */ __HAL_ADC_DISABLE_IT(hadc, ADC_IT_JEOC); } /* Conversion complete callback */ HAL_ADCEx_InjectedConvCpltCallback(hadc); /* Clear the ADCx flag for injected end of conversion */ __HAL_ADC_CLEAR_FLAG(hadc,ADC_FLAG_JEOC); } tmp1 = __HAL_ADC_GET_FLAG(hadc, ADC_FLAG_AWD); tmp2 = __HAL_ADC_GET_IT_SOURCE(hadc, ADC_IT_AWD); /* Check Analog watchdog flag */ if(tmp1 && tmp2) { /* Change ADC state */ hadc->State = HAL_ADC_STATE_AWD; /* Clear the ADCx's Analog watchdog flag */ __HAL_ADC_CLEAR_FLAG(hadc,ADC_FLAG_AWD); /* Level out of window callback */ HAL_ADC_LevelOutOfWindowCallback(hadc); } tmp1 = __HAL_ADC_GET_FLAG(hadc, ADC_FLAG_OVR); tmp2 = __HAL_ADC_GET_IT_SOURCE(hadc, ADC_IT_OVR); /* Check Overrun flag */ if(tmp1 && tmp2) { /* Change ADC state to overrun state */ hadc->State = HAL_ADC_STATE_ERROR; /* Set ADC error code to overrun */ hadc->ErrorCode |= HAL_ADC_ERROR_OVR; /* Clear the Overrun flag */ __HAL_ADC_CLEAR_FLAG(hadc,ADC_FLAG_OVR); /* Error callback */ HAL_ADC_ErrorCallback(hadc); } } /** * @brief Enables ADC DMA request after last transfer (Single-ADC mode) and enables ADC peripheral * @param hadc: pointer to a ADC_HandleTypeDef structure that contains * the configuration information for the specified ADC. * @param pData: The destination Buffer address. * @param Length: The length of data to be transferred from ADC peripheral to memory. * @retval HAL status */ HAL_StatusTypeDef HAL_ADC_Start_DMA(ADC_HandleTypeDef* hadc, uint32_t* pData, uint32_t Length) { uint16_t i = 0; /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(hadc->Init.ContinuousConvMode)); assert_param(IS_ADC_EXT_TRIG_EDGE(hadc->Init.ExternalTrigConvEdge)); /* Process locked */ __HAL_LOCK(hadc); /* Enable ADC overrun interrupt */ __HAL_ADC_ENABLE_IT(hadc, ADC_IT_OVR); /* Enable ADC DMA mode */ hadc->Instance->CR2 |= ADC_CR2_DMA; /* Set the DMA transfer complete callback */ hadc->DMA_Handle->XferCpltCallback = ADC_DMAConvCplt; /* Set the DMA half transfer complete callback */ hadc->DMA_Handle->XferHalfCpltCallback = ADC_DMAHalfConvCplt; /* Set the DMA error callback */ hadc->DMA_Handle->XferErrorCallback = ADC_DMAError ; /* Enable the DMA Stream */ HAL_DMA_Start_IT(hadc->DMA_Handle, (uint32_t)&hadc->Instance->DR, (uint32_t)pData, Length); /* Change ADC state */ hadc->State = HAL_ADC_STATE_BUSY_REG; /* Check if ADC peripheral is disabled in order to enable it and wait during Tstab time the ADC's stabilization */ if((hadc->Instance->CR2 & ADC_CR2_ADON) != ADC_CR2_ADON) { /* Enable the Peripheral */ __HAL_ADC_ENABLE(hadc); /* Delay inserted to wait during Tstab time the ADC's stabilization */ for(; i <= 540; i++) { __NOP(); } } /* if no external trigger present enable software conversion of regular channels */ if (hadc->Init.ExternalTrigConvEdge == ADC_EXTERNALTRIGCONVEDGE_NONE) { /* Enable the selected ADC software conversion for regular group */ hadc->Instance->CR2 |= ADC_CR2_SWSTART; } /* Process unlocked */ __HAL_UNLOCK(hadc); /* Return function status */ return HAL_OK; } /** * @brief Disables ADC DMA (Single-ADC mode) and disables ADC peripheral * @param hadc: pointer to a ADC_HandleTypeDef structure that contains * the configuration information for the specified ADC. * @retval HAL status */ HAL_StatusTypeDef HAL_ADC_Stop_DMA(ADC_HandleTypeDef* hadc) { /* Disable the Peripheral */ __HAL_ADC_DISABLE(hadc); /* Disable ADC overrun interrupt */ __HAL_ADC_DISABLE_IT(hadc, ADC_IT_OVR); /* Disable the selected ADC DMA mode */ hadc->Instance->CR2 &= ~ADC_CR2_DMA; /* Disable the ADC DMA Stream */ HAL_DMA_Abort(hadc->DMA_Handle); /* Change ADC state */ hadc->State = HAL_ADC_STATE_READY; /* Return function status */ return HAL_OK; } /** * @brief Gets the converted value from data register of regular channel. * @param hadc: pointer to a ADC_HandleTypeDef structure that contains * the configuration information for the specified ADC. * @retval Converted value */ uint32_t HAL_ADC_GetValue(ADC_HandleTypeDef* hadc) { /* Return the selected ADC converted value */ return hadc->Instance->DR; } /** * @brief Regular conversion complete callback in non blocking mode * @param hadc: pointer to a ADC_HandleTypeDef structure that contains * the configuration information for the specified ADC. * @retval None */ __weak void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc) { /* NOTE : This function Should not be modified, when the callback is needed, the HAL_ADC_ConvCpltCallback could be implemented in the user file */ } /** * @brief Regular conversion half DMA transfer callback in non blocking mode * @param hadc: pointer to a ADC_HandleTypeDef structure that contains * the configuration information for the specified ADC. * @retval None */ __weak void HAL_ADC_ConvHalfCpltCallback(ADC_HandleTypeDef* hadc) { /* NOTE : This function Should not be modified, when the callback is needed, the HAL_ADC_ConvHalfCpltCallback could be implemented in the user file */ } /** * @brief Analog watchdog callback in non blocking mode * @param hadc: pointer to a ADC_HandleTypeDef structure that contains * the configuration information for the specified ADC. * @retval None */ __weak void HAL_ADC_LevelOutOfWindowCallback(ADC_HandleTypeDef* hadc) { /* NOTE : This function Should not be modified, when the callback is needed, the HAL_ADC_LevelOoutOfWindowCallback could be implemented in the user file */ } /** * @brief Error ADC callback. * @param hadc: pointer to a ADC_HandleTypeDef structure that contains * the configuration information for the specified ADC. * @retval None */ __weak void HAL_ADC_ErrorCallback(ADC_HandleTypeDef *hadc) { /* NOTE : This function Should not be modified, when the callback is needed, the HAL_ADC_ErrorCallback could be implemented in the user file */ } /** * @} */ /** @defgroup ADC_Exported_Functions_Group3 Peripheral Control functions * @brief Peripheral Control functions * @verbatim =============================================================================== ##### Peripheral Control functions ##### =============================================================================== [..] This section provides functions allowing to: (+) Configure regular channels. (+) Configure injected channels. (+) Configure multimode. (+) Configure the analog watch dog. @endverbatim * @{ */ /** * @brief Configures for the selected ADC regular channel its corresponding * rank in the sequencer and its sample time. * @param hadc: pointer to a ADC_HandleTypeDef structure that contains * the configuration information for the specified ADC. * @param sConfig: ADC configuration structure. * @retval HAL status */ HAL_StatusTypeDef HAL_ADC_ConfigChannel(ADC_HandleTypeDef* hadc, ADC_ChannelConfTypeDef* sConfig) { /* Check the parameters */ assert_param(IS_ADC_CHANNEL(sConfig->Channel)); assert_param(IS_ADC_REGULAR_RANK(sConfig->Rank)); assert_param(IS_ADC_SAMPLE_TIME(sConfig->SamplingTime)); /* Process locked */ __HAL_LOCK(hadc); /* if ADC_Channel_10 ... ADC_Channel_18 is selected */ if (sConfig->Channel > ADC_CHANNEL_9) { /* Clear the old sample time */ hadc->Instance->SMPR1 &= ~ADC_SMPR1(ADC_SMPR1_SMP10, sConfig->Channel); /* Set the new sample time */ hadc->Instance->SMPR1 |= ADC_SMPR1(sConfig->SamplingTime, sConfig->Channel); } else /* ADC_Channel include in ADC_Channel_[0..9] */ { /* Clear the old sample time */ hadc->Instance->SMPR2 &= ~ADC_SMPR2(ADC_SMPR2_SMP0, sConfig->Channel); /* Set the new sample time */ hadc->Instance->SMPR2 |= ADC_SMPR2(sConfig->SamplingTime, sConfig->Channel); } /* For Rank 1 to 6 */ if (sConfig->Rank < 7) { /* Clear the old SQx bits for the selected rank */ hadc->Instance->SQR3 &= ~ADC_SQR3_RK(ADC_SQR3_SQ1, sConfig->Rank); /* Set the SQx bits for the selected rank */ hadc->Instance->SQR3 |= ADC_SQR3_RK(sConfig->Channel, sConfig->Rank); } /* For Rank 7 to 12 */ else if (sConfig->Rank < 13) { /* Clear the old SQx bits for the selected rank */ hadc->Instance->SQR2 &= ~ADC_SQR2_RK(ADC_SQR2_SQ7, sConfig->Rank); /* Set the SQx bits for the selected rank */ hadc->Instance->SQR2 |= ADC_SQR2_RK(sConfig->Channel, sConfig->Rank); } /* For Rank 13 to 16 */ else { /* Clear the old SQx bits for the selected rank */ hadc->Instance->SQR1 &= ~ADC_SQR1_RK(ADC_SQR1_SQ13, sConfig->Rank); /* Set the SQx bits for the selected rank */ hadc->Instance->SQR1 |= ADC_SQR1_RK(sConfig->Channel, sConfig->Rank); } /* if ADC1 Channel_18 is selected enable VBAT Channel */ if ((hadc->Instance == ADC1) && (sConfig->Channel == ADC_CHANNEL_VBAT)) { /* Enable the VBAT channel*/ ADC->CCR |= ADC_CCR_VBATE; } /* if ADC1 Channel_16 or Channel_17 is selected enable TSVREFE Channel(Temperature sensor and VREFINT) */ if ((hadc->Instance == ADC1) && ((sConfig->Channel == ADC_CHANNEL_TEMPSENSOR) || (sConfig->Channel == ADC_CHANNEL_VREFINT))) { /* Enable the TSVREFE channel*/ ADC->CCR |= ADC_CCR_TSVREFE; } /* Process unlocked */ __HAL_UNLOCK(hadc); /* Return function status */ return HAL_OK; } /** * @brief Configures the analog watchdog. * @param hadc: pointer to a ADC_HandleTypeDef structure that contains * the configuration information for the specified ADC. * @param AnalogWDGConfig : pointer to an ADC_AnalogWDGConfTypeDef structure * that contains the configuration information of ADC analog watchdog. * @retval HAL status */ HAL_StatusTypeDef HAL_ADC_AnalogWDGConfig(ADC_HandleTypeDef* hadc, ADC_AnalogWDGConfTypeDef* AnalogWDGConfig) { #ifdef USE_FULL_ASSERT uint32_t tmp = 0; #endif /* USE_FULL_ASSERT */ /* Check the parameters */ assert_param(IS_ADC_ANALOG_WATCHDOG(AnalogWDGConfig->WatchdogMode)); assert_param(IS_ADC_CHANNEL(AnalogWDGConfig->Channel)); assert_param(IS_FUNCTIONAL_STATE(AnalogWDGConfig->ITMode)); #ifdef USE_FULL_ASSERT tmp = ADC_GET_RESOLUTION(hadc); assert_param(IS_ADC_RANGE(tmp, AnalogWDGConfig->HighThreshold)); assert_param(IS_ADC_RANGE(tmp, AnalogWDGConfig->LowThreshold)); #endif /* USE_FULL_ASSERT */ /* Process locked */ __HAL_LOCK(hadc); if(AnalogWDGConfig->ITMode == ENABLE) { /* Enable the ADC Analog watchdog interrupt */ __HAL_ADC_ENABLE_IT(hadc, ADC_IT_AWD); } else { /* Disable the ADC Analog watchdog interrupt */ __HAL_ADC_DISABLE_IT(hadc, ADC_IT_AWD); } /* Clear AWDEN, JAWDEN and AWDSGL bits */ hadc->Instance->CR1 &= ~(ADC_CR1_AWDSGL | ADC_CR1_JAWDEN | ADC_CR1_AWDEN); /* Set the analog watchdog enable mode */ hadc->Instance->CR1 |= AnalogWDGConfig->WatchdogMode; /* Set the high threshold */ hadc->Instance->HTR = AnalogWDGConfig->HighThreshold; /* Set the low threshold */ hadc->Instance->LTR = AnalogWDGConfig->LowThreshold; /* Clear the Analog watchdog channel select bits */ hadc->Instance->CR1 &= ~ADC_CR1_AWDCH; /* Set the Analog watchdog channel */ hadc->Instance->CR1 |= (uint32_t)((uint16_t)(AnalogWDGConfig->Channel)); /* Process unlocked */ __HAL_UNLOCK(hadc); /* Return function status */ return HAL_OK; } /** * @} */ /** @defgroup ADC_Exported_Functions_Group4 ADC Peripheral State functions * @brief ADC Peripheral State functions * @verbatim =============================================================================== ##### Peripheral State and errors functions ##### =============================================================================== [..] This subsection provides functions allowing to (+) Check the ADC state (+) Check the ADC Error @endverbatim * @{ */ /** * @brief return the ADC state * @param hadc: pointer to a ADC_HandleTypeDef structure that contains * the configuration information for the specified ADC. * @retval HAL state */ HAL_ADC_StateTypeDef HAL_ADC_GetState(ADC_HandleTypeDef* hadc) { /* Return ADC state */ return hadc->State; } /** * @brief Return the ADC error code * @param hadc: pointer to a ADC_HandleTypeDef structure that contains * the configuration information for the specified ADC. * @retval ADC Error Code */ uint32_t HAL_ADC_GetError(ADC_HandleTypeDef *hadc) { return hadc->ErrorCode; } /** * @} */ /** * @brief Initializes the ADCx peripheral according to the specified parameters * in the ADC_InitStruct without initializing the ADC MSP. * @param hadc: pointer to a ADC_HandleTypeDef structure that contains * the configuration information for the specified ADC. * @retval None */ static void ADC_Init(ADC_HandleTypeDef* hadc) { /* Set ADC parameters */ /* Set the ADC clock prescaler */ ADC->CCR &= ~(ADC_CCR_ADCPRE); ADC->CCR |= hadc->Init.ClockPrescaler; /* Set ADC scan mode */ hadc->Instance->CR1 &= ~(ADC_CR1_SCAN); hadc->Instance->CR1 |= ADC_CR1_SCANCONV(hadc->Init.ScanConvMode); /* Set ADC resolution */ hadc->Instance->CR1 &= ~(ADC_CR1_RES); hadc->Instance->CR1 |= hadc->Init.Resolution; /* Set ADC data alignment */ hadc->Instance->CR2 &= ~(ADC_CR2_ALIGN); hadc->Instance->CR2 |= hadc->Init.DataAlign; /* Select external trigger to start conversion */ hadc->Instance->CR2 &= ~(ADC_CR2_EXTSEL); hadc->Instance->CR2 |= hadc->Init.ExternalTrigConv; /* Select external trigger polarity */ hadc->Instance->CR2 &= ~(ADC_CR2_EXTEN); hadc->Instance->CR2 |= hadc->Init.ExternalTrigConvEdge; /* Enable or disable ADC continuous conversion mode */ hadc->Instance->CR2 &= ~(ADC_CR2_CONT); hadc->Instance->CR2 |= ADC_CR2_CONTINUOUS(hadc->Init.ContinuousConvMode); if (hadc->Init.DiscontinuousConvMode != DISABLE) { assert_param(IS_ADC_REGULAR_DISC_NUMBER(hadc->Init.NbrOfDiscConversion)); /* Enable the selected ADC regular discontinuous mode */ hadc->Instance->CR1 |= (uint32_t)ADC_CR1_DISCEN; /* Set the number of channels to be converted in discontinuous mode */ hadc->Instance->CR1 &= ~(ADC_CR1_DISCNUM); hadc->Instance->CR1 |= ADC_CR1_DISCONTINUOUS(hadc->Init.NbrOfDiscConversion); } else { /* Disable the selected ADC regular discontinuous mode */ hadc->Instance->CR1 &= ~(ADC_CR1_DISCEN); } /* Set ADC number of conversion */ hadc->Instance->SQR1 &= ~(ADC_SQR1_L); hadc->Instance->SQR1 |= ADC_SQR1(hadc->Init.NbrOfConversion); /* Enable or disable ADC DMA continuous request */ hadc->Instance->CR2 &= ~(ADC_CR2_DDS); hadc->Instance->CR2 |= ADC_CR2_DMAContReq(hadc->Init.DMAContinuousRequests); /* Enable or disable ADC end of conversion selection */ hadc->Instance->CR2 &= ~(ADC_CR2_EOCS); hadc->Instance->CR2 |= ADC_CR2_EOCSelection(hadc->Init.EOCSelection); } /** * @brief DMA transfer complete callback. * @param hdma: pointer to a DMA_HandleTypeDef structure that contains * the configuration information for the specified DMA module. * @retval None */ static void ADC_DMAConvCplt(DMA_HandleTypeDef *hdma) { ADC_HandleTypeDef* hadc = ( ADC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; /* Check if an injected conversion is ready */ if(hadc->State == HAL_ADC_STATE_EOC_INJ) { /* Change ADC state */ hadc->State = HAL_ADC_STATE_EOC_INJ_REG; } else { /* Change ADC state */ hadc->State = HAL_ADC_STATE_EOC_REG; } HAL_ADC_ConvCpltCallback(hadc); } /** * @brief DMA half transfer complete callback. * @param hdma: pointer to a DMA_HandleTypeDef structure that contains * the configuration information for the specified DMA module. * @retval None */ static void ADC_DMAHalfConvCplt(DMA_HandleTypeDef *hdma) { ADC_HandleTypeDef* hadc = ( ADC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; /* Conversion complete callback */ HAL_ADC_ConvHalfCpltCallback(hadc); } /** * @brief DMA error callback * @param hdma: pointer to a DMA_HandleTypeDef structure that contains * the configuration information for the specified DMA module. * @retval None */ static void ADC_DMAError(DMA_HandleTypeDef *hdma) { ADC_HandleTypeDef* hadc = ( ADC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; hadc->State= HAL_ADC_STATE_ERROR; /* Set ADC error code to DMA error */ hadc->ErrorCode |= HAL_ADC_ERROR_DMA; HAL_ADC_ErrorCallback(hadc); } /** * @} */ #endif /* HAL_ADC_MODULE_ENABLED */ /** * @} */ /** * @} */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/