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Diffstat (limited to 'tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F0/stm32f0xx_hal_adc.c')
| -rw-r--r-- | tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F0/stm32f0xx_hal_adc.c | 1865 |
1 files changed, 1865 insertions, 0 deletions
diff --git a/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F0/stm32f0xx_hal_adc.c b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F0/stm32f0xx_hal_adc.c new file mode 100644 index 0000000000..b6f04aee87 --- /dev/null +++ b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F0/stm32f0xx_hal_adc.c @@ -0,0 +1,1865 @@ +/** + ****************************************************************************** + * @file stm32f0xx_hal_adc.c + * @author MCD Application Team + * @version V1.2.0 + * @date 11-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 + * ++ Initialization and Configuration of ADC + * + Operation functions + * ++ Start, stop, get result of conversions of regular group, + * using 3 possible modes: polling, interruption or DMA. + * + Control functions + * ++ Analog Watchdog configuration + * ++ Channels configuration on regular group + * + State functions + * ++ ADC state machine management + * ++ Interrupts and flags management + * + @verbatim + ============================================================================== + ##### ADC specific features ##### + ============================================================================== + [..] + (#) 12-bit, 10-bit, 8-bit or 6-bit configurable resolution + + (#) Interrupt generation at the end of regular 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 'n'. + + (#) Data alignment with in-built data coherency. + + (#) Programmable sampling time. + + (#) ADC conversion group Regular. + + (#) External trigger (timer or EXTI) with configurable polarity. + + (#) DMA request generation for transfer of conversions data of regular group. + + (#) ADC calibration + + (#) 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: from Vref minus (connected to Vssa) to Vref plus (connected to + Vdda or to an external voltage reference). + + + ##### How to use this driver ##### + ============================================================================== + [..] + + (#) Enable the ADC interface + (++) As prerequisite, into HAL_ADC_MspInit(), ADC clock must be configured + at RCC top level: clock source and clock prescaler. + (++)Two possible clock sources: synchronous clock derived from APB clock + or asynchronous clock derived from ADC dedicated HSI RC oscillator + 14MHz. + (++)Example: + __ADC1_CLK_ENABLE(); (mandatory) + + HI14 enable or let under control of ADC: (optional) + + RCC_OscInitTypeDef RCC_OscInitStructure; + RCC_OscInitStructure.OscillatorType = RCC_OSCILLATORTYPE_HSI14; + RCC_OscInitStructure.HSI14CalibrationValue = RCC_HSI14CALIBRATION_DEFAULT; + RCC_OscInitStructure.HSI14State = RCC_HSI14_ADC_CONTROL; + RCC_OscInitStructure.PLL... (optional if used for system clock) + HAL_RCC_OscConfig(&RCC_OscInitStructure); + + Parameter "HSI14State" must be set either: + - to "...HSI14State = RCC_HSI14_ADC_CONTROL" to let the ADC control + the HSI14 oscillator enable/disable (if not used to supply the main + system clock): feature used if ADC mode LowPowerAutoPowerOff is + enabled. + - to "...HSI14State = RCC_HSI14_ON" to maintain the HSI14 oscillator + always enabled: can be used to supply the main system clock. + + (#) ADC pins configuration + (++) Enable the clock for the ADC GPIOs using the following function: + __GPIOx_CLK_ENABLE(); + (++) Configure these ADC pins in analog mode using HAL_GPIO_Init(); + + (#) Configure the ADC parameters (conversion resolution, data alignment, + continuous mode, ...) using the HAL_ADC_Init() function. + + (#) Activate the ADC peripheral using one of the start functions: + HAL_ADC_Start(), HAL_ADC_Start_IT(), HAL_ADC_Start_DMA(). + + *** Channels configuration to regular group *** + ================================================ + [..] + (+) To configure the ADC regular group features, use + HAL_ADC_Init() and HAL_ADC_ConfigChannel() functions. + (+) To activate the continuous mode, use the HAL_ADC_Init() function. + (+) To read the ADC converted values, use the HAL_ADC_GetValue() function. + + *** DMA for regular configuration *** + ============================================================= + [..] + (+) To enable the DMA mode for regular group, use the + HAL_ADC_Start_DMA() function. + (+) To enable the generation of DMA requests continuously at the end of + the last DMA transfer, use the HAL_ADC_Init() function. + + @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 "stm32f0xx_hal.h" + +/** @addtogroup STM32F0xx_HAL_Driver + * @{ + */ + +/** @defgroup ADC ADC HAL module driver + * @brief ADC HAL module driver + * @{ + */ + +#ifdef HAL_ADC_MODULE_ENABLED + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/** @defgroup ADC_Private_Constants ADC 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, sampling time 7.5 ADC clock cycles, resolution 12 bits. */ + /* Unit: ms */ + #define ADC_ENABLE_TIMEOUT ((uint32_t) 2) + #define ADC_DISABLE_TIMEOUT ((uint32_t) 2) + #define ADC_STOP_CONVERSION_TIMEOUT ((uint32_t) 2) + + /* Delay for temperature sensor stabilization time. */ + /* Maximum delay is 10us (refer to device datasheet, parameter tSTART). */ + /* Delay in CPU cycles, fixed to worst case: maximum CPU frequency 48MHz to */ + /* have the minimum number of CPU cycles to fulfill this delay. */ + #define ADC_TEMPSENSOR_DELAY_CPU_CYCLES ((uint32_t) 480) + + /* Delay for ADC stabilization time. */ + /* Maximum delay is 1us (refer to device datasheet, parameter tSTAB). */ + /* Delay in CPU cycles, fixed to worst case: maximum CPU frequency 48MHz to */ + /* have the minimum number of CPU cycles to fulfill this delay. */ + #define ADC_STAB_DELAY_CPU_CYCLES ((uint32_t)48) +/** + * @} + */ + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/** @defgroup ADC_Private_Functions ADC Private Functions + * @{ + */ +static HAL_StatusTypeDef ADC_Enable(ADC_HandleTypeDef* hadc); +static HAL_StatusTypeDef ADC_Disable(ADC_HandleTypeDef* hadc); +static HAL_StatusTypeDef ADC_ConversionStop(ADC_HandleTypeDef* hadc); +static void ADC_DMAConvCplt(DMA_HandleTypeDef *hdma); +static void ADC_DMAHalfConvCplt(DMA_HandleTypeDef *hdma); +static void ADC_DMAError(DMA_HandleTypeDef *hdma); +/** + * @} + */ + +/* Exported functions ---------------------------------------------------------*/ + +/** @defgroup ADC_Exported_Functions ADC Exported Functions + * @{ + */ + +/** @defgroup ADC_Exported_Functions_Group1 Initialization/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 ADC peripheral and regular group according to + * parameters specified in structure "ADC_InitTypeDef". + * @note As prerequisite, ADC clock must be configured at RCC top level + * depending on both possible clock sources: APB clock of HSI clock. + * See commented example code below that can be copied and uncommented + * into HAL_ADC_MspInit(). + * @note Possibility to update parameters on the fly: + * This function initializes the ADC MSP (HAL_ADC_MspInit()) only when + * coming from ADC state reset. Following calls to this function can + * be used to reconfigure some parameters of ADC_InitTypeDef + * structure on the fly, without modifying MSP configuration. If ADC + * MSP has to be modified again, HAL_ADC_DeInit() must be called + * before HAL_ADC_Init(). + * The setting of these parameters is conditioned to ADC state. + * For parameters constraints, see comments of structure + * "ADC_InitTypeDef". + * @note This function configures the ADC within 2 scopes: scope of entire + * ADC and scope of regular group. For parameters details, see comments + * of structure "ADC_InitTypeDef". + * @param hadc: ADC handle + * @retval HAL status + */ +HAL_StatusTypeDef HAL_ADC_Init(ADC_HandleTypeDef* hadc) +{ + HAL_StatusTypeDef tmpHALStatus = HAL_OK; + uint32_t tmpCFGR1 = 0; + + /* 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_ADC_DATA_ALIGN(hadc->Init.DataAlign)); + assert_param(IS_ADC_SCAN_MODE(hadc->Init.ScanConvMode)); + assert_param(IS_FUNCTIONAL_STATE(hadc->Init.ContinuousConvMode)); + assert_param(IS_FUNCTIONAL_STATE(hadc->Init.DiscontinuousConvMode)); + assert_param(IS_ADC_EXTTRIG_EDGE(hadc->Init.ExternalTrigConvEdge)); + assert_param(IS_ADC_EXTTRIG(hadc->Init.ExternalTrigConv)); + assert_param(IS_FUNCTIONAL_STATE(hadc->Init.DMAContinuousRequests)); + assert_param(IS_ADC_EOC_SELECTION(hadc->Init.EOCSelection)); + assert_param(IS_ADC_OVERRUN(hadc->Init.Overrun)); + assert_param(IS_FUNCTIONAL_STATE(hadc->Init.LowPowerAutoWait)); + assert_param(IS_FUNCTIONAL_STATE(hadc->Init.LowPowerAutoPowerOff)); + + /* As prerequisite, into HAL_ADC_MspInit(), ADC clock must be configured */ + /* at RCC top level depending on both possible clock sources: */ + /* APB clock or HSI clock. */ + /* Refer to header of this file for more details on clock enabling procedure*/ + + /* Actions performed only if ADC is coming from state reset: */ + /* - Initialization of ADC MSP */ + /* - ADC voltage regulator enable */ + if (hadc->State == HAL_ADC_STATE_RESET) + { + /* Init the low level hardware */ + HAL_ADC_MspInit(hadc); + + } + + /* Configuration of ADC parameters if previous preliminary actions are */ + /* correctly completed. */ + /* and if there is no conversion on going on regular group (ADC can be */ + /* enabled anyway, in case of call of this function to update a parameter */ + /* on the fly). */ + if ((hadc->State != HAL_ADC_STATE_ERROR) && + (__HAL_ADC_IS_CONVERSION_ONGOING_REGULAR(hadc) == RESET) ) + { + /* Initialize the ADC state */ + hadc->State = HAL_ADC_STATE_BUSY; + + /* Parameters update conditioned to ADC state: */ + /* Parameters that can be updated only when ADC is disabled: */ + /* - ADC clock mode */ + /* - ADC clock prescaler */ + if (__HAL_ADC_IS_ENABLED(hadc) == RESET) + { + /* Some parameters of this register are not reset, since they are set */ + /* by other functions and must be kept in case of usage of this */ + /* function on the fly (update of a parameter of ADC_InitTypeDef */ + /* without needing to reconfigure all other ADC groups/channels */ + /* parameters): */ + /* - internal measurement paths: Vbat, temperature sensor, Vref */ + /* (set into HAL_ADC_ConfigChannel() ) */ + + /* Reset configuration of ADC configuration register CFGR2: */ + /* - ADC clock mode: CKMODE */ + hadc->Instance->CFGR2 &= ~(ADC_CFGR2_CKMODE); + + /* Configuration of ADC clock mode: clock source AHB or HSI with */ + /* selectable prescaler */ + hadc->Instance->CFGR2 |= hadc->Init.ClockPrescaler; + } + + /* Configuration of ADC: */ + /* - discontinuous mode */ + /* - LowPowerAutoWait mode */ + /* - LowPowerAutoPowerOff mode */ + /* - continuous conversion mode */ + /* - overrun */ + /* - external trigger to start conversion */ + /* - external trigger polarity */ + /* - data alignment */ + /* - resolution */ + /* - scan direction */ + /* - DMA continuous request */ + hadc->Instance->CFGR1 &= ~( ADC_CFGR1_DISCEN | + ADC_CFGR1_AUTOFF | + ADC_CFGR1_AUTDLY | + ADC_CFGR1_CONT | + ADC_CFGR1_OVRMOD | + ADC_CFGR1_EXTSEL | + ADC_CFGR1_EXTEN | + ADC_CFGR1_ALIGN | + ADC_CFGR1_RES | + ADC_CFGR1_SCANDIR | + ADC_CFGR1_DMACFG ); + + tmpCFGR1 |= (__HAL_ADC_CFGR1_AUTOWAIT(hadc->Init.LowPowerAutoWait) | + __HAL_ADC_CFGR1_AUTOOFF(hadc->Init.LowPowerAutoPowerOff) | + __HAL_ADC_CFGR1_CONTINUOUS(hadc->Init.ContinuousConvMode) | + __HAL_ADC_CFGR1_OVERRUN(hadc->Init.Overrun) | + hadc->Init.DataAlign | + hadc->Init.Resolution | + __HAL_ADC_CFGR1_SCANDIR(hadc->Init.ScanConvMode) | + __HAL_ADC_CFGR1_DMACONTREQ(hadc->Init.DMAContinuousRequests) ); + + /* Enable discontinuous mode only if continuous mode is disabled */ + if ((hadc->Init.DiscontinuousConvMode == ENABLE) && + (hadc->Init.ContinuousConvMode == DISABLE) ) + { + /* Enable discontinuous mode of regular group */ + tmpCFGR1 |= ADC_CFGR1_DISCEN; + } + + /* Enable external trigger if trigger selection is different of software */ + /* start. */ + /* @Note: This configuration keeps the hardware feature of parameter */ + /* ExternalTrigConvEdge "trigger edge none" equivalent to */ + /* software start. */ + if (hadc->Init.ExternalTrigConv != ADC_SOFTWARE_START) + { + tmpCFGR1 |= ( hadc->Init.ExternalTrigConv | + hadc->Init.ExternalTrigConvEdge ); + } + + /* Update ADC configuration register with previous settings */ + hadc->Instance->CFGR1 |= tmpCFGR1; + + /* Check back that ADC registers have effectively been configured to */ + /* ensure of no potential problem of ADC core IP clocking. */ + /* Check through register CFGR1 (excluding analog watchdog configuration: */ + /* set into separate dedicated function). */ + if ((hadc->Instance->CFGR1 & ~(ADC_CFGR1_AWDCH | ADC_CFGR1_AWDEN | ADC_CFGR1_AWDSGL)) + == tmpCFGR1) + { + /* Set ADC error code to none */ + __HAL_ADC_CLEAR_ERRORCODE(hadc); + + /* Initialize the ADC state */ + hadc->State = HAL_ADC_STATE_READY; + } + else + { + /* Update ADC state machine to error */ + hadc->State = HAL_ADC_STATE_ERROR; + + /* Set ADC error code to ADC IP internal error */ + hadc->ErrorCode |= HAL_ADC_ERROR_INTERNAL; + + tmpHALStatus = HAL_ERROR; + } + + } + else + { + /* Update ADC state machine to error */ + hadc->State = HAL_ADC_STATE_ERROR; + + tmpHALStatus = HAL_ERROR; + } + + /* Return function status */ + return tmpHALStatus; +} + + +/** + * @brief Deinitialize the ADC peripheral registers to their default reset + * values, with deinitialization of the ADC MSP. + * @note For devices with several ADCs: reset of ADC common registers is done + * only if all ADCs sharing the same common group are disabled. + * If this is not the case, reset of these common parameters reset is + * bypassed without error reporting: it can be the intended behaviour in + * case of reset of a single ADC while the other ADCs sharing the same + * common group is still running. + * @param hadc: ADC handle + * @retval HAL status + */ +HAL_StatusTypeDef HAL_ADC_DeInit(ADC_HandleTypeDef* hadc) +{ + HAL_StatusTypeDef tmpHALStatus = HAL_OK; + + /* 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; + + /* Stop potential conversion on going, on regular group */ + tmpHALStatus = ADC_ConversionStop(hadc); + + /* Disable ADC peripheral if conversions are effectively stopped */ + if (tmpHALStatus != HAL_ERROR) + { + /* Disable the ADC peripheral */ + tmpHALStatus = ADC_Disable(hadc); + + /* Check if ADC is effectively disabled */ + if (tmpHALStatus != HAL_ERROR) + { + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_READY; + } + } + + + /* Configuration of ADC parameters if previous preliminary actions are */ + /* correctly completed. */ + if (tmpHALStatus != HAL_ERROR) + { + + /* ========== Reset ADC registers ========== */ + /* Reset register IER */ + __HAL_ADC_DISABLE_IT(hadc, (ADC_IT_AWD | ADC_IT_OVR | + ADC_IT_EOS | ADC_IT_EOC | + ADC_IT_EOSMP | ADC_IT_RDY ) ); + + /* Reset register ISR */ + __HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_AWD | ADC_FLAG_OVR | + ADC_FLAG_EOS | ADC_FLAG_EOC | + ADC_FLAG_EOSMP | ADC_FLAG_RDY ) ); + + /* Reset register CR */ + /* Bits ADC_CR_ADCAL, ADC_CR_ADSTP, ADC_CR_ADSTART are in access mode */ + /* "read-set": no direct reset applicable. */ + + /* Reset register CFGR1 */ + hadc->Instance->CFGR1 &= ~(ADC_CFGR1_AWDCH | ADC_CFGR1_AWDEN | ADC_CFGR1_AWDSGL | ADC_CFGR1_DISCEN | + ADC_CFGR1_AUTOFF | ADC_CFGR1_WAIT | ADC_CFGR1_CONT | ADC_CFGR1_OVRMOD | + ADC_CFGR1_EXTEN | ADC_CFGR1_EXTSEL | ADC_CFGR1_ALIGN | ADC_CFGR1_RES | + ADC_CFGR1_SCANDIR | ADC_CFGR1_DMACFG | ADC_CFGR1_DMAEN ); + + /* Reset register CFGR2 */ + /* @Note: Update of ADC clock mode is conditioned to ADC state disabled: */ + /* already done above. */ + hadc->Instance->CFGR2 &= ~ADC_CFGR2_CKMODE; + + /* Reset register SMPR */ + hadc->Instance->SMPR &= ~ADC_SMPR_SMP; + + /* Reset register TR1 */ + hadc->Instance->TR &= ~(ADC_TR_HT | ADC_TR_LT); + + /* Reset register CHSELR */ + hadc->Instance->CHSELR &= ~(ADC_CHSELR_CHSEL18 | ADC_CHSELR_CHSEL17 | ADC_CHSELR_CHSEL16 | + ADC_CHSELR_CHSEL15 | ADC_CHSELR_CHSEL14 | ADC_CHSELR_CHSEL13 | ADC_CHSELR_CHSEL12 | + ADC_CHSELR_CHSEL11 | ADC_CHSELR_CHSEL10 | ADC_CHSELR_CHSEL9 | ADC_CHSELR_CHSEL8 | + ADC_CHSELR_CHSEL7 | ADC_CHSELR_CHSEL6 | ADC_CHSELR_CHSEL5 | ADC_CHSELR_CHSEL4 | + ADC_CHSELR_CHSEL3 | ADC_CHSELR_CHSEL2 | ADC_CHSELR_CHSEL1 | ADC_CHSELR_CHSEL0 ); + + /* Reset register DR */ + /* bits in access mode read only, no direct reset applicable*/ + + /* Reset register CCR */ + ADC->CCR &= ~( ADC_CCR_VBATEN | + ADC_CCR_TSEN | + ADC_CCR_VREFEN ); + + /* ========== Hard reset ADC peripheral ========== */ + /* Performs a global reset of the entire ADC peripheral: ADC state is */ + /* forced to a similar state after device power-on. */ + /* If needed, copy-paste and uncomment the following reset code into */ + /* function "void HAL_ADC_MspInit(ADC_HandleTypeDef* hadc)": */ + /* */ + /* __ADC1_FORCE_RESET() */ + /* __ADC1_RELEASE_RESET() */ + + /* DeInit the low level hardware */ + HAL_ADC_MspDeInit(hadc); + + /* Set ADC error code to none */ + __HAL_ADC_CLEAR_ERRORCODE(hadc); + + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_RESET; + } + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + /* Return function status */ + return tmpHALStatus; +} + + +/** + * @brief Initializes the ADC MSP. + * @param hadc: ADC handle + * @retval None + */ +__weak void HAL_ADC_MspInit(ADC_HandleTypeDef* hadc) +{ + /* NOTE : This function should not be modified. When the callback is needed, + function HAL_ADC_MspInit must be implemented in the user file. + */ +} + +/** + * @brief DeInitializes the ADC MSP. + * @param hadc: ADC handle + * @retval None + */ +__weak void HAL_ADC_MspDeInit(ADC_HandleTypeDef* hadc) +{ + /* NOTE : This function should not be modified. When the callback is needed, + function HAL_ADC_MspDeInit must 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 group. + (+) Stop conversion of regular group. + (+) Poll for conversion complete on regular group. + (+) Poll for conversion event. + (+) Get result of regular channel conversion. + (+) Start conversion of regular group and enable interruptions. + (+) Stop conversion of regular group and disable interruptions. + (+) Handle ADC interrupt request + (+) Start conversion of regular group and enable DMA transfer. + (+) Stop conversion of regular group and disable ADC DMA transfer. +@endverbatim + * @{ + */ + +/** + * @brief Enables ADC, starts conversion of regular group. + * Interruptions enabled in this function: None. + * @param hadc: ADC handle + * @retval HAL status + */ +HAL_StatusTypeDef HAL_ADC_Start(ADC_HandleTypeDef* hadc) +{ + HAL_StatusTypeDef tmpHALStatus = HAL_OK; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + + /* Perform ADC enable and conversion start if no conversion is on going */ + if (__HAL_ADC_IS_CONVERSION_ONGOING_REGULAR(hadc) == RESET) + { + /* Process locked */ + __HAL_LOCK(hadc); + + /* Enable the ADC peripheral */ + /* If low power mode AutoPowerOff is enabled, power-on/off phases are */ + /* performed automatically by hardware. */ + if (hadc->Init.LowPowerAutoPowerOff != ENABLE) + { + tmpHALStatus = ADC_Enable(hadc); + } + + /* Start conversion if ADC is effectively enabled */ + if (tmpHALStatus != HAL_ERROR) + { + /* State machine update: Change ADC state */ + hadc->State = HAL_ADC_STATE_BUSY_REG; + + /* Set ADC error code to none */ + __HAL_ADC_CLEAR_ERRORCODE(hadc); + + /* Clear regular group conversion flag and overrun flag */ + /* (To ensure of no unknown state from potential previous ADC */ + /* operations) */ + __HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_EOC | ADC_FLAG_EOS | ADC_FLAG_OVR)); + + /* Enable conversion of regular group. */ + /* If software start has been selected, conversion starts immediately. */ + /* If external trigger has been selected, conversion will start at next */ + /* trigger event. */ + hadc->Instance->CR |= ADC_CR_ADSTART; + } + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + } + else + { + tmpHALStatus = HAL_BUSY; + } + + /* Return function status */ + return tmpHALStatus; +} + +/** + * @brief Stop ADC conversion of regular group, disable ADC peripheral. + * @param hadc: ADC handle + * @retval HAL status. + */ +HAL_StatusTypeDef HAL_ADC_Stop(ADC_HandleTypeDef* hadc) +{ + HAL_StatusTypeDef tmpHALStatus = HAL_OK; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + + /* Process locked */ + __HAL_LOCK(hadc); + + /* 1. Stop potential conversion on going, on regular group */ + tmpHALStatus = ADC_ConversionStop(hadc); + + /* Disable ADC peripheral if conversions are effectively stopped */ + if (tmpHALStatus != HAL_ERROR) + { + /* 2. Disable the ADC peripheral */ + tmpHALStatus = ADC_Disable(hadc); + + /* Check if ADC is effectively disabled */ + if (tmpHALStatus != HAL_ERROR) + { + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_READY; + } + } + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + /* Return function status */ + return tmpHALStatus; +} + +/** + * @brief Wait for regular group conversion to be completed. + * @param hadc: ADC handle + * @param Timeout: Timeout value in millisecond. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_ADC_PollForConversion(ADC_HandleTypeDef* hadc, uint32_t Timeout) +{ + uint32_t tickstart; + uint32_t tmp_Flag_EOC; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + + /* If end of conversion selected to end of sequence */ + if (hadc->Init.EOCSelection == EOC_SEQ_CONV) + { + tmp_Flag_EOC = ADC_FLAG_EOS; + } + /* If end of conversion selected to end of each conversion */ + else /* EOC_SINGLE_CONV */ + { + tmp_Flag_EOC = (ADC_FLAG_EOC | ADC_FLAG_EOS); + } + + /* Get timeout */ + tickstart = HAL_GetTick(); + + /* Wait until End of Conversion flag is raised */ + while(HAL_IS_BIT_CLR(hadc->Instance->ISR, tmp_Flag_EOC)) + { + /* Check if timeout is disabled (set to infinite wait) */ + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0) || ((HAL_GetTick()-tickstart) > Timeout)) + { + /* Update ADC state machine to timeout */ + hadc->State = HAL_ADC_STATE_TIMEOUT; + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + return HAL_ERROR; + } + } + } + + /* Clear end of conversion flag of regular group if low power feature */ + /* "LowPowerAutoWait " is disabled, to not interfere with this feature */ + /* until data register is read using function HAL_ADC_GetValue(). */ + if (hadc->Init.LowPowerAutoWait == DISABLE) + { + /* Clear regular group conversion flag */ + __HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_EOC | ADC_FLAG_EOS)); + } + + /* Update state machine on conversion status if not in error state */ + if(hadc->State != HAL_ADC_STATE_ERROR) + { + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_EOC_REG; + } + + /* Return ADC state */ + return HAL_OK; +} + +/** + * @brief Poll for conversion event. + * @param hadc: ADC handle + * @param EventType: the ADC event type. + * This parameter can be one of the following values: + * @arg AWD_EVENT: ADC Analog watchdog event + * @arg 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_ALL_INSTANCE(hadc->Instance)); + assert_param(IS_ADC_EVENT_TYPE(EventType)); + + tickstart = HAL_GetTick(); + + /* Check selected event flag */ + while(__HAL_ADC_GET_FLAG(hadc, EventType) == RESET) + { + /* Check if timeout is disabled (set to infinite wait) */ + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0) || ((HAL_GetTick()-tickstart) > Timeout)) + { + /* Update ADC state machine to timeout */ + hadc->State = HAL_ADC_STATE_TIMEOUT; + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + return HAL_ERROR; + } + } + } + + switch(EventType) + { + /* Analog watchdog (level out of window) event */ + case AWD_EVENT: + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_AWD; + + /* Clear ADC analog watchdog flag */ + __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_AWD); + break; + + /* Overrun event */ + default: /* Case OVR_EVENT */ + /* If overrun is set to overwrite previous data, overrun event is not */ + /* considered as an error. */ + /* (cf ref manual "Managing conversions without using the DMA and without */ + /* overrun ") */ + if (hadc->Init.Overrun == OVR_DATA_PRESERVED) + { + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_ERROR; + + /* Set ADC error code to overrun */ + hadc->ErrorCode |= HAL_ADC_ERROR_OVR; + } + + /* Clear ADC Overrun flag */ + __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_OVR); + break; + } + + /* Return ADC state */ + return HAL_OK; +} + +/** + * @brief Enables ADC, starts conversion of regular group with interruption. + * Interruptions enabled in this function: + * - EOC (end of conversion of regular group) or EOS (end of + * sequence of regular group) depending on ADC initialization + * parameter "EOCSelection" + * - overrun (if available) + * Each of these interruptions has its dedicated callback function. + * @param hadc: ADC handle + * @retval HAL status + */ +HAL_StatusTypeDef HAL_ADC_Start_IT(ADC_HandleTypeDef* hadc) +{ + HAL_StatusTypeDef tmpHALStatus = HAL_OK; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + + /* Perform ADC enable and conversion start if no conversion is on going */ + if (__HAL_ADC_IS_CONVERSION_ONGOING_REGULAR(hadc) == RESET) + { + /* Process locked */ + __HAL_LOCK(hadc); + + /* Enable the ADC peripheral */ + /* If low power mode AutoPowerOff is enabled, power-on/off phases are */ + /* performed automatically by hardware. */ + if (hadc->Init.LowPowerAutoPowerOff != ENABLE) + { + tmpHALStatus = ADC_Enable(hadc); + } + + /* Start conversion if ADC is effectively enabled */ + if (tmpHALStatus != HAL_ERROR) + { + /* State machine update: Change ADC state */ + hadc->State = HAL_ADC_STATE_BUSY_REG; + + /* Set ADC error code to none */ + __HAL_ADC_CLEAR_ERRORCODE(hadc); + + /* Clear regular group conversion flag and overrun flag */ + /* (To ensure of no unknown state from potential previous ADC */ + /* operations) */ + __HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_EOC | ADC_FLAG_EOS | ADC_FLAG_OVR)); + + /* Enable ADC end of conversion interrupt */ + /* Enable ADC overrun interrupt */ + switch(hadc->Init.EOCSelection) + { + case EOC_SEQ_CONV: + __HAL_ADC_DISABLE_IT(hadc, ADC_IT_EOC); + __HAL_ADC_ENABLE_IT(hadc, (ADC_IT_EOS | ADC_IT_OVR)); + break; + /* case EOC_SINGLE_CONV */ + default: + __HAL_ADC_ENABLE_IT(hadc, (ADC_IT_EOC | ADC_IT_EOS | ADC_IT_OVR)); + break; + } + + /* Enable conversion of regular group. */ + /* If software start has been selected, conversion starts immediately. */ + /* If external trigger has been selected, conversion will start at next */ + /* trigger event. */ + hadc->Instance->CR |= ADC_CR_ADSTART; + } + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + } + else + { + tmpHALStatus = HAL_BUSY; + } + + /* Return function status */ + return tmpHALStatus; +} + + +/** + * @brief Stop ADC conversion of regular group, disable interruption of + * end-of-conversion, disable ADC peripheral. + * @param hadc: ADC handle + * @retval HAL status. + */ +HAL_StatusTypeDef HAL_ADC_Stop_IT(ADC_HandleTypeDef* hadc) +{ + HAL_StatusTypeDef tmpHALStatus = HAL_OK; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + + /* Process locked */ + __HAL_LOCK(hadc); + + /* 1. Stop potential conversion on going, on regular group */ + tmpHALStatus = ADC_ConversionStop(hadc); + + /* Disable ADC peripheral if conversions are effectively stopped */ + if (tmpHALStatus != HAL_ERROR) + { + /* Disable ADC end of conversion interrupt for regular group */ + /* Disable ADC overrun interrupt */ + __HAL_ADC_DISABLE_IT(hadc, (ADC_IT_EOC | ADC_IT_EOS | ADC_IT_OVR)); + + /* 2. Disable the ADC peripheral */ + tmpHALStatus = ADC_Disable(hadc); + + /* Check if ADC is effectively disabled */ + if (tmpHALStatus != HAL_ERROR) + { + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_READY; + } + } + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + /* Return function status */ + return tmpHALStatus; +} + +/** + * @brief Enables ADC, starts conversion of regular group and transfers result + * through DMA. + * Interruptions enabled in this function: + * - DMA transfer complete + * - DMA half transfer + * - overrun + * Each of these interruptions has its dedicated callback function. + * @param hadc: ADC handle + * @param pData: The destination Buffer address. + * @param Length: The length of data to be transferred from ADC peripheral to memory. + * @retval None + */ +HAL_StatusTypeDef HAL_ADC_Start_DMA(ADC_HandleTypeDef* hadc, uint32_t* pData, uint32_t Length) +{ + HAL_StatusTypeDef tmpHALStatus = HAL_OK; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + + /* Perform ADC enable and conversion start if no conversion is on going */ + if (__HAL_ADC_IS_CONVERSION_ONGOING_REGULAR(hadc) == RESET) + { + /* Process locked */ + __HAL_LOCK(hadc); + + /* Enable the ADC peripheral */ + /* If low power mode AutoPowerOff is enabled, power-on/off phases are */ + /* performed automatically by hardware. */ + if (hadc->Init.LowPowerAutoPowerOff != ENABLE) + { + tmpHALStatus = ADC_Enable(hadc); + } + + /* Start conversion if ADC is effectively enabled */ + if (tmpHALStatus != HAL_ERROR) + { + /* State machine update: Change ADC state */ + hadc->State = HAL_ADC_STATE_BUSY_REG; + + /* Set ADC error code to none */ + __HAL_ADC_CLEAR_ERRORCODE(hadc); + + + /* 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; + + + /* Manage ADC and DMA start: ADC overrun interruption, DMA start, ADC */ + /* start (in case of SW start): */ + + /* Clear regular group conversion flag and overrun flag */ + /* (To ensure of no unknown state from potential previous ADC */ + /* operations) */ + __HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_EOC | ADC_FLAG_EOS | ADC_FLAG_OVR)); + + /* Enable ADC overrun interrupt */ + __HAL_ADC_ENABLE_IT(hadc, ADC_IT_OVR); + + /* Enable ADC DMA mode */ + hadc->Instance->CFGR1 |= ADC_CFGR1_DMAEN; + + /* Start the DMA channel */ + HAL_DMA_Start_IT(hadc->DMA_Handle, (uint32_t)&hadc->Instance->DR, (uint32_t)pData, Length); + + /* Enable conversion of regular group. */ + /* If software start has been selected, conversion starts immediately. */ + /* If external trigger has been selected, conversion will start at next */ + /* trigger event. */ + hadc->Instance->CR |= ADC_CR_ADSTART; + } + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + } + else + { + tmpHALStatus = HAL_BUSY; + } + + /* Return function status */ + return tmpHALStatus; +} + +/** + * @brief Stop ADC conversion of regular group, disable ADC DMA transfer, disable + * ADC peripheral. + * Each of these interruptions has its dedicated callback function. + * @param hadc: ADC handle + * @retval HAL status. + */ +HAL_StatusTypeDef HAL_ADC_Stop_DMA(ADC_HandleTypeDef* hadc) +{ + HAL_StatusTypeDef tmpHALStatus = HAL_OK; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + + /* Process locked */ + __HAL_LOCK(hadc); + + /* 1. Stop potential conversion on going, on regular group */ + tmpHALStatus = ADC_ConversionStop(hadc); + + /* Disable ADC peripheral if conversions are effectively stopped */ + if (tmpHALStatus != HAL_ERROR) + { + /* Disable ADC DMA (ADC DMA configuration ADC_CFGR_DMACFG is kept) */ + hadc->Instance->CFGR1 &= ~ADC_CFGR1_DMAEN; + + /* Disable the DMA channel (in case of DMA in circular mode or stop while */ + /* while DMA transfer is on going) */ + tmpHALStatus = HAL_DMA_Abort(hadc->DMA_Handle); + + /* Check if DMA channel effectively disabled */ + if (tmpHALStatus != HAL_OK) + { + /* Update ADC state machine to error */ + hadc->State = HAL_ADC_STATE_ERROR; + } + + /* Disable ADC overrun interrupt */ + __HAL_ADC_DISABLE_IT(hadc, ADC_IT_OVR); + + /* 2. Disable the ADC peripheral */ + /* Update "tmpHALStatus" only if DMA channel disabling passed, to keep in */ + /* memory a potential failing status. */ + if (tmpHALStatus == HAL_OK) + { + tmpHALStatus = ADC_Disable(hadc); + } + else + { + ADC_Disable(hadc); + } + + /* Check if ADC is effectively disabled */ + if (tmpHALStatus == HAL_OK) + { + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_READY; + } + + } + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + /* Return function status */ + return tmpHALStatus; +} + +/** + * @brief Get ADC regular group conversion result. + * @note Reading DR register automatically clears EOC (end of conversion of + * regular group) flag. + * Additionally, this functions clears EOS (end of sequence of + * regular group) flag, in case of the end of the sequence is reached. + * @param hadc: ADC handle + * @retval Converted value + */ +uint32_t HAL_ADC_GetValue(ADC_HandleTypeDef* hadc) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + + /* @Note: EOC flag is not cleared here by software because automatically */ + /* cleared by hardware when reading register DR. */ + + /* Clear regular group end of sequence flag */ + __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_EOS); + + /* Return ADC converted value */ + return hadc->Instance->DR; +} + +/** + * @brief DMA transfer complete callback. + * @param hdma: pointer to DMA handle. + * @retval None + */ +static void ADC_DMAConvCplt(DMA_HandleTypeDef *hdma) +{ + /* Retrieve ADC handle corresponding to current DMA handle */ + ADC_HandleTypeDef* hadc = ( ADC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + + /* Update state machine on conversion status if not in error state */ + if(hadc->State != HAL_ADC_STATE_ERROR) + { + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_EOC_REG; + } + + /* Conversion complete callback */ + HAL_ADC_ConvCpltCallback(hadc); +} + +/** + * @brief DMA half transfer complete callback. + * @param hdma: pointer to DMA handle. + * @retval None + */ +static void ADC_DMAHalfConvCplt(DMA_HandleTypeDef *hdma) +{ + /* Retrieve ADC handle corresponding to current DMA handle */ + ADC_HandleTypeDef* hadc = ( ADC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + + /* Half conversion callback */ + HAL_ADC_ConvHalfCpltCallback(hadc); +} + +/** + * @brief DMA error callback + * @param hdma: pointer to DMA handle. + * @retval None + */ +static void ADC_DMAError(DMA_HandleTypeDef *hdma) +{ + /* Retrieve ADC handle corresponding to current DMA handle */ + ADC_HandleTypeDef* hadc = ( ADC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_ERROR; + + /* Set ADC error code to DMA error */ + hadc->ErrorCode |= HAL_ADC_ERROR_DMA; + + /* Error callback */ + HAL_ADC_ErrorCallback(hadc); +} + +/** + * @brief Handles ADC interrupt request. + * @param hadc: ADC handle + * @retval None + */ +void HAL_ADC_IRQHandler(ADC_HandleTypeDef* hadc) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + assert_param(IS_FUNCTIONAL_STATE(hadc->Init.ContinuousConvMode)); + assert_param(IS_ADC_EOC_SELECTION(hadc->Init.EOCSelection)); + + /* ========== Check End of Conversion flag for regular group ========== */ + if( (__HAL_ADC_GET_FLAG(hadc, ADC_FLAG_EOC) && __HAL_ADC_GET_IT_SOURCE(hadc, ADC_IT_EOC)) || + (__HAL_ADC_GET_FLAG(hadc, ADC_FLAG_EOS) && __HAL_ADC_GET_IT_SOURCE(hadc, ADC_IT_EOS)) ) + { + /* Update state machine on conversion status if not in error state */ + if(hadc->State != HAL_ADC_STATE_ERROR) + { + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_EOC_REG; + } + + /* Disable interruption if no further conversion upcoming by regular */ + /* external trigger or by continuous mode, */ + /* and if scan sequence if completed. */ + if(__HAL_ADC_IS_SOFTWARE_START_REGULAR(hadc) && + (hadc->Init.ContinuousConvMode == DISABLE) ) + { + /* If End of Sequence is reached, disable interrupts */ + if( __HAL_ADC_GET_FLAG(hadc, ADC_FLAG_EOS) ) + { + /* Allowed to modify bits ADC_IT_EOC/ADC_IT_EOS only if bit */ + /* ADSTART==0 (no conversion on going) */ + if (__HAL_ADC_IS_CONVERSION_ONGOING_REGULAR(hadc) == RESET) + { + /* Disable ADC end of sequence conversion interrupt */ + /* @Note: Overrun interrupt was enabled with EOC interrupt in */ + /* HAL_Start_IT(), but is not disabled here because can be used */ + /* by overrun IRQ process below. */ + __HAL_ADC_DISABLE_IT(hadc, ADC_IT_EOC | ADC_IT_EOS); + } + else + { + /* Change ADC state to error state */ + hadc->State = HAL_ADC_STATE_ERROR; + + /* Set ADC error code to ADC IP internal error */ + hadc->ErrorCode |= HAL_ADC_ERROR_INTERNAL; + } + } + } + + /* Conversion complete callback */ + /* @Note: into callback, to determine if conversion has been triggered */ + /* from EOC or EOS, possibility to use: */ + /* " if( __HAL_ADC_GET_FLAG(&hadc, ADC_FLAG_EOS)) " */ + HAL_ADC_ConvCpltCallback(hadc); + + + /* Clear regular group conversion flag */ + /* @Note: in case of overrun set to OVR_DATA_PRESERVED, end of conversion */ + /* flags clear induces the release of the preserved data. */ + /* Therefore, if the preserved data value is needed, it must be */ + /* read preliminarily into HAL_ADC_ConvCpltCallback(). */ + __HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_EOC | ADC_FLAG_EOS) ); + } + + /* ========== Check Analog watchdog flags ========== */ + if(__HAL_ADC_GET_FLAG(hadc, ADC_FLAG_AWD) && __HAL_ADC_GET_IT_SOURCE(hadc, ADC_IT_AWD)) + { + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_AWD; + + /* Level out of window callback */ + HAL_ADC_LevelOutOfWindowCallback(hadc); + + /* Clear ADC Analog watchdog flag */ + __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_AWD); + + } + + + /* ========== Check Overrun flag ========== */ + if(__HAL_ADC_GET_FLAG(hadc, ADC_FLAG_OVR) && __HAL_ADC_GET_IT_SOURCE(hadc, ADC_IT_OVR)) + { + /* If overrun is set to overwrite previous data (default setting), */ + /* overrun event is not considered as an error. */ + /* (cf ref manual "Managing conversions without using the DMA and without */ + /* overrun ") */ + /* Exception for usage with DMA overrun event always considered as an */ + /* error. */ + if ((hadc->Init.Overrun == OVR_DATA_PRESERVED) || + HAL_IS_BIT_SET(hadc->Instance->CFGR1, ADC_CFGR1_DMAEN) ) + { + /* Change ADC state to error state */ + hadc->State = HAL_ADC_STATE_ERROR; + + /* Set ADC error code to overrun */ + hadc->ErrorCode |= HAL_ADC_ERROR_OVR; + + /* Error callback */ + HAL_ADC_ErrorCallback(hadc); + } + + /* Clear the Overrun flag */ + __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_OVR); + } + +} + + +/** + * @brief Conversion complete callback in non blocking mode + * @param hadc: ADC handle + * @retval None + */ +__weak void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc) +{ + /* NOTE : This function should not be modified. When the callback is needed, + function HAL_ADC_ConvCpltCallback must be implemented in the user file. + */ +} + +/** + * @brief Conversion DMA half-transfer callback in non blocking mode + * @param hadc: ADC handle + * @retval None + */ +__weak void HAL_ADC_ConvHalfCpltCallback(ADC_HandleTypeDef* hadc) +{ + /* NOTE : This function should not be modified. When the callback is needed, + function HAL_ADC_ConvHalfCpltCallback must be implemented in the user file. + */ +} + +/** + * @brief Analog watchdog callback in non blocking mode. + * @param hadc: ADC handle + * @retval None + */ +__weak void HAL_ADC_LevelOutOfWindowCallback(ADC_HandleTypeDef* hadc) +{ + /* NOTE : This function should not be modified. When the callback is needed, + function HAL_ADC_LevelOoutOfWindowCallback must be implemented in the user file. + */ +} + +/** + * @brief ADC error callback in non blocking mode + * (ADC conversion with interruption or transfer by DMA) + * @param hadc: ADC handle + * @retval None + */ +__weak void HAL_ADC_ErrorCallback(ADC_HandleTypeDef *hadc) +{ + /* NOTE : This function should not be modified. When the callback is needed, + function HAL_ADC_ErrorCallback must 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 channels on regular group + (+) Configure the analog watchdog + +@endverbatim + * @{ + */ + +/** + * @brief Configures the the selected channel to be linked to the regular + * group. + * @note In case of usage of internal measurement channels: + * VrefInt/Vbat/TempSensor. + * Sampling time constraints must be respected (sampling time can be + * adjusted in function of ADC clock frequency and sampling time + * setting). + * Refer to device datasheet for timings values, parameters TS_vrefint, + * TS_vbat, TS_temp (values rough order: 5us to 17us). + * These internal paths can be be disabled using function + * HAL_ADC_DeInit(). + * @note Possibility to update parameters on the fly: + * This function initializes channel into regular group, following + * calls to this function can be used to reconfigure some parameters + * of structure "ADC_ChannelConfTypeDef" on the fly, without reseting + * the ADC. + * The setting of these parameters is conditioned to ADC state. + * For parameters constraints, see comments of structure + * "ADC_ChannelConfTypeDef". + * @param hadc: ADC handle + * @param sConfig: Structure of ADC channel for regular group. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_ADC_ConfigChannel(ADC_HandleTypeDef* hadc, ADC_ChannelConfTypeDef* sConfig) +{ + HAL_StatusTypeDef tmpHALStatus = HAL_OK; + __IO uint32_t wait_loop_index = 0; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + assert_param(IS_ADC_CHANNEL(sConfig->Channel)); + assert_param(IS_ADC_RANK(sConfig->Rank)); + assert_param(IS_ADC_SAMPLE_TIME(sConfig->SamplingTime)); + + /* Process locked */ + __HAL_LOCK(hadc); + + /* Parameters update conditioned to ADC state: */ + /* Parameters that can be updated when ADC is disabled or enabled without */ + /* conversion on going on regular group: */ + /* - Channel number */ + /* - Channel sampling time */ + /* - Management of internal measurement channels: Vbat/VrefInt/TempSensor */ + if (__HAL_ADC_IS_CONVERSION_ONGOING_REGULAR(hadc) == RESET) + { + /* Configure channel: depending on rank setting, add it or remove it from */ + /* ADC conversion sequencer. */ + if (sConfig->Rank != ADC_RANK_NONE) + { + /* Regular sequence configuration */ + /* Set the channel selection register from the selected channel */ + hadc->Instance->CHSELR |= __HAL_ADC_CHSELR_CHANNEL(sConfig->Channel); + + /* Channel sampling time configuration */ + /* Modify sampling time if needed (not needed in case of reoccurrence */ + /* for several channels programmed consecutively into the sequencer) */ + if (sConfig->SamplingTime != __HAL_ADC_GET_SAMPLINGTIME(hadc)) + { + /* Channel sampling time configuration */ + /* Clear the old sample time */ + hadc->Instance->SMPR &= ~(ADC_SMPR_SMP); + + /* Set the new sample time */ + hadc->Instance->SMPR |= (sConfig->SamplingTime); + } + + /* Management of internal measurement channels: Vbat/VrefInt/TempSensor */ + /* internal measurement paths enable: If internal channel selected, */ + /* enable dedicated internal buffers and path. */ + /* @Note: these internal measurement paths can be disabled using */ + /* HAL_ADC_DeInit() or removing the channel from sequencer with */ + /* channel configuration parameter "Rank". */ + + /* If Channel_16 is selected, enable Temp. sensor measurement path. */ + if (sConfig->Channel == ADC_CHANNEL_TEMPSENSOR) + { + ADC->CCR |= ADC_CCR_TSEN; + + /* Delay for temperature sensor stabilization time */ + while(wait_loop_index < ADC_TEMPSENSOR_DELAY_CPU_CYCLES) + { + wait_loop_index++; + } + } + /* If Channel_17 is selected, enable VBAT measurement path. */ + else if (sConfig->Channel == ADC_CHANNEL_VBAT) + { + ADC->CCR |= ADC_CCR_VBATEN; + } + /* If Channel_18 is selected, enable VREFINT measurement path. */ + else if (sConfig->Channel == ADC_CHANNEL_VREFINT) + { + ADC->CCR |= ADC_CCR_VREFEN; + } + + } + else + { + /* Regular sequence configuration */ + /* Reset the channel selection register from the selected channel */ + hadc->Instance->CHSELR &= ~__HAL_ADC_CHSELR_CHANNEL(sConfig->Channel); + + /* Management of internal measurement channels: Vbat/VrefInt/TempSensor */ + /* internal measurement paths disable: If internal channel selected, */ + /* disable dedicated internal buffers and path. */ + + /* If Channel_16 is selected, disable Temp. sensor measurement path. */ + if (sConfig->Channel == ADC_CHANNEL_TEMPSENSOR) + { + ADC->CCR &= ~ADC_CCR_TSEN; + } + /* If Channel_17 is selected, disable VBAT measurement path. */ + else if (sConfig->Channel == ADC_CHANNEL_VBAT) + { + ADC->CCR &= ~ADC_CCR_VBATEN; + } + /* If Channel_18 is selected, disable VREFINT measurement path. */ + else if (sConfig->Channel == ADC_CHANNEL_VREFINT) + { + ADC->CCR &= ~ADC_CCR_VREFEN; + } + } + + } + + + /* If a conversion is on going on regular group, no update on regular */ + /* channel could be done on neither of the channel configuration structure */ + /* parameters. */ + else + { + /* Update ADC state machine to error */ + hadc->State = HAL_ADC_STATE_ERROR; + + tmpHALStatus = HAL_ERROR; + } + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + /* Return function status */ + return tmpHALStatus; +} + + +/** + * @brief Configures the analog watchdog. + * @note Possibility to update parameters on the fly: + * This function initializes the selected analog watchdog, following + * calls to this function can be used to reconfigure some parameters + * of structure "ADC_AnalogWDGConfTypeDef" on the fly, without reseting + * the ADC. + * The setting of these parameters is conditioned to ADC state. + * For parameters constraints, see comments of structure + * "ADC_AnalogWDGConfTypeDef". + * @param hadc: ADC handle + * @param AnalogWDGConfig: Structure of ADC analog watchdog configuration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_ADC_AnalogWDGConfig(ADC_HandleTypeDef* hadc, ADC_AnalogWDGConfTypeDef* AnalogWDGConfig) +{ + HAL_StatusTypeDef tmpHALStatus = HAL_OK; + + uint32_t tmpAWDHighThresholdShifted; + uint32_t tmpAWDLowThresholdShifted; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + assert_param(IS_FUNCTIONAL_STATE(AnalogWDGConfig->ITMode)); + + /* Verify if threshold is within the selected ADC resolution */ + assert_param(IS_ADC_RANGE(__HAL_ADC_GET_RESOLUTION(hadc), AnalogWDGConfig->HighThreshold)); + assert_param(IS_ADC_RANGE(__HAL_ADC_GET_RESOLUTION(hadc), AnalogWDGConfig->LowThreshold)); + + if(AnalogWDGConfig->WatchdogMode == ADC_ANALOGWATCHDOG_SINGLE_REG) + { + assert_param(IS_ADC_CHANNEL(AnalogWDGConfig->Channel)); + } + + /* Process locked */ + __HAL_LOCK(hadc); + + /* Parameters update conditioned to ADC state: */ + /* Parameters that can be updated when ADC is disabled or enabled without */ + /* conversion on going on regular group: */ + /* - Analog watchdog channels */ + /* - Analog watchdog thresholds */ + if (__HAL_ADC_IS_CONVERSION_ONGOING_REGULAR(hadc) == RESET) + { + /* Configuration of analog watchdog: */ + /* - Set the analog watchdog enable mode: one or overall group of */ + /* channels. */ + /* - Set the Analog watchdog channel (is not used if watchdog */ + /* mode "all channels": ADC_CFGR_AWD1SGL=0). */ + hadc->Instance->CFGR1 &= ~( ADC_CFGR1_AWDSGL | + ADC_CFGR1_AWDEN | + ADC_CFGR1_AWDCH ); + + hadc->Instance->CFGR1 |= ( AnalogWDGConfig->WatchdogMode | + __HAL_ADC_CFGR_AWDCH(AnalogWDGConfig->Channel) ); + + /* Shift the offset in function of the selected ADC resolution: Thresholds*/ + /* have to be left-aligned on bit 11, the LSB (right bits) are set to 0 */ + tmpAWDHighThresholdShifted = __HAL_ADC_AWD1THRESHOLD_SHIFT_RESOLUTION(hadc, AnalogWDGConfig->HighThreshold); + tmpAWDLowThresholdShifted = __HAL_ADC_AWD1THRESHOLD_SHIFT_RESOLUTION(hadc, AnalogWDGConfig->LowThreshold); + + /* Set the high and low thresholds */ + hadc->Instance->TR &= ~(ADC_TR_HT | ADC_TR_LT); + hadc->Instance->TR |= ( __HAL_ADC_TRX_HIGHTHRESHOLD (tmpAWDHighThresholdShifted) | + tmpAWDLowThresholdShifted ); + + /* Clear the ADC Analog watchdog flag (in case of left enabled by */ + /* previous ADC operations) to be ready to use for HAL_ADC_IRQHandler() */ + /* or HAL_ADC_PollForEvent(). */ + __HAL_ADC_CLEAR_FLAG(hadc, ADC_IT_AWD); + + /* Configure ADC Analog watchdog interrupt */ + 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); + } + + } + /* If a conversion is on going on regular group, no update could be done */ + /* on neither of the AWD configuration structure parameters. */ + else + { + /* Update ADC state machine to error */ + hadc->State = HAL_ADC_STATE_ERROR; + + tmpHALStatus = HAL_ERROR; + } + + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + /* Return function status */ + return tmpHALStatus; +} + + +/** + * @} + */ + + +/** @defgroup ADC_Exported_Functions_Group4 Peripheral State functions + * @brief Peripheral State functions + * +@verbatim + =============================================================================== + ##### Peripheral State and Errors functions ##### + =============================================================================== + [..] + This subsection provides functions to get in run-time the status of the + peripheral. + (+) Check the ADC state + (+) Check the ADC error code + +@endverbatim + * @{ + */ + +/** + * @brief return the ADC state + * @param hadc: ADC handle + * @retval HAL state + */ +HAL_ADC_StateTypeDef HAL_ADC_GetState(ADC_HandleTypeDef* hadc) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + + /* Return ADC state */ + return hadc->State; +} + +/** + * @brief Return the ADC error code + * @param hadc: ADC handle + * @retval ADC Error Code + */ +uint32_t HAL_ADC_GetError(ADC_HandleTypeDef *hadc) +{ + return hadc->ErrorCode; +} + +/** + * @} + */ + +/** + * @} + */ + +/** @defgroup ADC_Private_Functions ADC Private Functions + * @{ + */ + +/** + * @brief Enable the selected ADC. + * @note Prerequisite condition to use this function: ADC must be disabled + * and voltage regulator must be enabled (done into HAL_ADC_Init()). + * @param hadc: ADC handle + * @retval HAL status. + */ +static HAL_StatusTypeDef ADC_Enable(ADC_HandleTypeDef* hadc) +{ + uint32_t tickstart = 0; + __IO uint32_t wait_loop_index = 0; + + /* ADC enable and wait for ADC ready (in case of ADC is disabled or */ + /* enabling phase not yet completed: flag ADC ready not yet set). */ + /* Timeout implemented to not be stuck if ADC cannot be enabled (possible */ + /* causes: ADC clock not running, ...). */ + if (__HAL_ADC_IS_ENABLED(hadc) == RESET) + { + /* Check if conditions to enable the ADC are fulfilled */ + if (__HAL_ADC_ENABLING_CONDITIONS(hadc) == RESET) + { + /* Update ADC state machine to error */ + hadc->State = HAL_ADC_STATE_ERROR; + + /* Set ADC error code to ADC IP internal error */ + hadc->ErrorCode |= HAL_ADC_ERROR_INTERNAL; + + return HAL_ERROR; + } + + /* Enable the ADC peripheral */ + __HAL_ADC_ENABLE(hadc); + + /* Delay for ADC stabilization time. */ + /* Delay fixed to worst case: maximum CPU frequency */ + while(wait_loop_index < ADC_STAB_DELAY_CPU_CYCLES) + { + wait_loop_index++; + } + + /* Get timeout */ + tickstart = HAL_GetTick(); + + /* Wait for ADC effectively enabled */ + while(__HAL_ADC_GET_FLAG(hadc, ADC_FLAG_RDY) == RESET) + { + if((HAL_GetTick() - tickstart) > ADC_ENABLE_TIMEOUT) + { + /* Update ADC state machine to error */ + hadc->State = HAL_ADC_STATE_ERROR; + + /* Set ADC error code to ADC IP internal error */ + hadc->ErrorCode |= HAL_ADC_ERROR_INTERNAL; + + return HAL_ERROR; + } + } + + } + + /* Return HAL status */ + return HAL_OK; +} + +/** + * @brief Disable the selected ADC. + * @note Prerequisite condition to use this function: ADC conversions must be + * stopped. + * @param hadc: ADC handle + * @retval HAL status. + */ +static HAL_StatusTypeDef ADC_Disable(ADC_HandleTypeDef* hadc) +{ + uint32_t tickstart = 0; + + /* Verification if ADC is not already disabled: */ + /* @Note: forbidden to disable ADC (set bit ADC_CR_ADDIS) if ADC is already */ + /* disabled. */ + if (__HAL_ADC_IS_ENABLED(hadc) != RESET ) + { + /* Check if conditions to disable the ADC are fulfilled */ + if (__HAL_ADC_DISABLING_CONDITIONS(hadc) != RESET) + { + /* Disable the ADC peripheral */ + __HAL_ADC_DISABLE(hadc); + } + else + { + /* Update ADC state machine to error */ + hadc->State = HAL_ADC_STATE_ERROR; + + /* Set ADC error code to ADC IP internal error */ + hadc->ErrorCode |= HAL_ADC_ERROR_INTERNAL; + + return HAL_ERROR; + } + + /* Wait for ADC effectively disabled */ + tickstart = HAL_GetTick(); + + while(HAL_IS_BIT_SET(hadc->Instance->CR, ADC_CR_ADEN)) + { + if((HAL_GetTick() - tickstart) > ADC_ENABLE_TIMEOUT) + { + /* Update ADC state machine to error */ + hadc->State = HAL_ADC_STATE_ERROR; + + /* Set ADC error code to ADC IP internal error */ + hadc->ErrorCode |= HAL_ADC_ERROR_INTERNAL; + + return HAL_ERROR; + } + } + } + + /* Return HAL status */ + return HAL_OK; +} + + +/** + * @brief Stop ADC conversion. + * @note Prerequisite condition to use this function: ADC conversions must be + * stopped to disable the ADC. + * @param hadc: ADC handle + * @retval HAL status. + */ +static HAL_StatusTypeDef ADC_ConversionStop(ADC_HandleTypeDef* hadc) +{ + uint32_t tickstart = 0; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + + /* Verification if ADC is not already stopped on regular group to bypass */ + /* this function if not needed. */ + if (__HAL_ADC_IS_CONVERSION_ONGOING_REGULAR(hadc)) + { + + /* Stop potential conversion on going on regular group */ + /* Software is allowed to set ADSTP only when ADSTART=1 and ADDIS=0 */ + if (HAL_IS_BIT_SET(hadc->Instance->CR, ADC_CR_ADSTART) && + HAL_IS_BIT_CLR(hadc->Instance->CR, ADC_CR_ADDIS) ) + { + /* Stop conversions on regular group */ + hadc->Instance->CR |= ADC_CR_ADSTP; + } + + /* Wait for conversion effectively stopped */ + tickstart = HAL_GetTick(); + + while((hadc->Instance->CR & ADC_CR_ADSTART) != RESET) + { + if((HAL_GetTick() - tickstart) > ADC_STOP_CONVERSION_TIMEOUT) + { + /* Update ADC state machine to error */ + hadc->State = HAL_ADC_STATE_ERROR; + + /* Set ADC error code to ADC IP internal error */ + hadc->ErrorCode |= HAL_ADC_ERROR_INTERNAL; + + return HAL_ERROR; + } + } + + } + + /* Return HAL status */ + return HAL_OK; +} + +/** + * @} + */ + +#endif /* HAL_ADC_MODULE_ENABLED */ +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |