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Diffstat (limited to 'tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F0/stm32f0xx_hal_adc_ex.c')
| -rw-r--r-- | tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F0/stm32f0xx_hal_adc_ex.c | 265 |
1 files changed, 265 insertions, 0 deletions
diff --git a/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F0/stm32f0xx_hal_adc_ex.c b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F0/stm32f0xx_hal_adc_ex.c new file mode 100644 index 0000000000..99f6a0f72f --- /dev/null +++ b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F0/stm32f0xx_hal_adc_ex.c @@ -0,0 +1,265 @@ +/** + ****************************************************************************** + * @file stm32f0xx_hal_adc_ex.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: + * + Operation functions + * ++ Calibration (ADC automatic self-calibration) + * + @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 minud (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(). + + *** Regular channels group configuration *** + ============================================ + [..] + (+) To configure the ADC regular channels 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 channels group features configuration *** + ============================================================= + [..] + (+) To enable the DMA mode for regular channels 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 ADCEx ADCEx Extended HAL Module Driver + * @brief ADC HAL module driver + * @{ + */ + +#ifdef HAL_ADC_MODULE_ENABLED + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/** @defgroup ADCEx_Private_Constants ADCEx Private Constants + * @{ + */ + +/* Fixed timeout values for ADC calibration, enable settling time, disable */ + /* settling time. */ + /* Values defined to be higher than worst cases: low clock frequency, */ + /* maximum prescaler. */ + /* Ex of profile low frequency : Clock source at 0.1 MHz, ADC clock */ + /* prescaler 4. */ + /* Unit: ms */ + #define ADC_DISABLE_TIMEOUT 2 + #define ADC_CALIBRATION_TIMEOUT 2 +/** + * @} + */ + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/* Private functions ---------------------------------------------------------*/ + +/** @defgroup ADCEx_Exported_Functions ADCEx Exported Functions + * @{ + */ + +/** @defgroup ADCEx_Exported_Functions_Group1 Extended Initialization/de-initialization functions + * @brief Extended Initialization and Configuration functions + * +@verbatim + =============================================================================== + ##### IO operation functions ##### + =============================================================================== + [..] This section provides functions allowing to: + (+) Perform the ADC calibration. +@endverbatim + * @{ + */ + +/** + * @brief Perform an ADC automatic self-calibration + * Calibration prerequisite: ADC must be disabled (execute this + * function before HAL_ADC_Start() or after HAL_ADC_Stop() ). + * @note Calibration factor can be read after calibration, using function + * HAL_ADC_GetValue() (value on 7 bits: from DR[6;0]). + * @param hadc: ADC handle + * @retval HAL status + */ +HAL_StatusTypeDef HAL_ADCEx_Calibration_Start(ADC_HandleTypeDef* hadc) +{ + HAL_StatusTypeDef tmpHALStatus = HAL_OK; + uint32_t tickstart=0; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + + /* Process locked */ + __HAL_LOCK(hadc); + + /* Calibration prerequisite: ADC must be disabled. */ + if (__HAL_ADC_IS_ENABLED(hadc) == RESET ) + { + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_READY; + + /* Start ADC calibration */ + hadc->Instance->CR |= ADC_CR_ADCAL; + + tickstart = HAL_GetTick(); + + /* Wait for calibration completion */ + while(HAL_IS_BIT_SET(hadc->Instance->CR, ADC_CR_ADCAL)) + { + if((HAL_GetTick() - tickstart) > ADC_CALIBRATION_TIMEOUT) + { + /* Update ADC state machine to error */ + hadc->State = HAL_ADC_STATE_ERROR; + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + return HAL_ERROR; + } + } + } + else + { + /* Update ADC state machine to error */ + hadc->State = HAL_ADC_STATE_ERROR; + } + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + /* Return function status */ + return tmpHALStatus; +} + +/** + * @} + */ + +/** + * @} + */ + +#endif /* HAL_ADC_MODULE_ENABLED */ +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |