Diff: targets/cmsis/TARGET_STM/TARGET_STM32F0/stm32f0xx_hal_adc_ex.c

Revision:

0:9b334a45a8ff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/cmsis/TARGET_STM/TARGET_STM32F0/stm32f0xx_hal_adc_ex.c	Thu Oct 01 15:25:22 2015 +0300
@@ -0,0 +1,193 @@
+/**
+  ******************************************************************************
+  * @file    stm32f0xx_hal_adc_ex.c
+  * @author  MCD Application Team
+  * @version V1.3.0
+  * @date    26-June-2015
+  * @brief   This file provides firmware functions to manage the following 
+  *          functionalities of the Analog to Digital Convertor (ADC)
+  *          peripheral:
+  *           + Operation functions
+  *             ++ Calibration (ADC automatic self-calibration)
+  *          Other functions (generic functions) are available in file 
+  *          "stm32l1xx_hal_adc.c".
+  *
+  @verbatim
+  [..] 
+  (@) Sections "ADC peripheral features" and "How to use this driver" are
+      available in file of generic functions "stm32l1xx_hal_adc.c".
+  [..]
+  @endverbatim
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2015 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
+  * @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 macros -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+/** @defgroup ADCEx_Exported_Functions ADCEx Exported Functions
+  * @{
+  */
+
+/** @defgroup ADCEx_Exported_Functions_Group1 Extended Initialization/de-initialization functions 
+ *  @brief    Extended Initialization and Configuration functions
+ *
+@verbatim
+ ===============================================================================
+                      ##### IO operation functions #####
+ ===============================================================================
+    [..]  This section provides functions allowing to:
+      (+) Perform the ADC calibration. 
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Perform an ADC automatic self-calibration
+  *         Calibration prerequisite: ADC must be disabled (execute this
+  *         function before HAL_ADC_Start() or after HAL_ADC_Stop() ).
+  * @note   Calibration factor can be read after calibration, using function
+  *         HAL_ADC_GetValue() (value on 7 bits: from DR[6;0]).
+  * @param  hadc: ADC handle
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_ADCEx_Calibration_Start(ADC_HandleTypeDef* hadc)
+{
+  HAL_StatusTypeDef tmp_hal_status = HAL_OK;
+  uint32_t tickstart=0;
+  
+  /* Check the parameters */
+  assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
+
+  /* Process locked */
+  __HAL_LOCK(hadc);
+  
+  /* Calibration prerequisite: ADC must be disabled. */
+  if (ADC_IS_ENABLE(hadc) == RESET)
+  {
+    /* Set ADC state */
+    ADC_STATE_CLR_SET(hadc->State, 
+                      HAL_ADC_STATE_REG_BUSY,
+                      HAL_ADC_STATE_BUSY_INTERNAL);
+    
+    /* Start ADC calibration */
+    hadc->Instance->CR |= ADC_CR_ADCAL;
+
+    tickstart = HAL_GetTick();  
+
+    /* Wait for calibration completion */
+    while(HAL_IS_BIT_SET(hadc->Instance->CR, ADC_CR_ADCAL))
+    {
+      if((HAL_GetTick() - tickstart) > ADC_CALIBRATION_TIMEOUT)
+      {
+        /* Update ADC state machine to error */
+        ADC_STATE_CLR_SET(hadc->State,
+                          HAL_ADC_STATE_BUSY_INTERNAL,
+                          HAL_ADC_STATE_ERROR_INTERNAL);
+        
+        /* Process unlocked */
+        __HAL_UNLOCK(hadc);
+        
+        return HAL_ERROR;
+      }
+    }
+    
+    /* Set ADC state */
+    ADC_STATE_CLR_SET(hadc->State,
+                      HAL_ADC_STATE_BUSY_INTERNAL,
+                      HAL_ADC_STATE_READY);
+  }
+  else
+  {
+    /* Update ADC state machine to error */
+    SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_CONFIG);
+    
+    tmp_hal_status = HAL_ERROR;
+  }
+  
+  /* Process unlocked */
+  __HAL_UNLOCK(hadc);
+  
+  /* Return function status */
+  return tmp_hal_status;
+}
+
+/**
+  * @}
+  */  
+
+/**
+  * @}
+  */
+
+#endif /* HAL_ADC_MODULE_ENABLED */
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/