Diff: targets/cmsis/TARGET_STM/TARGET_STM32F3/stm32f3xx_hal_dac.c

Revision:

385:be64abf45658

Parent:

330:c80ac197fa6a

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/cmsis/TARGET_STM/TARGET_STM32F3/stm32f3xx_hal_dac.c	Tue Nov 04 09:45:07 2014 +0000
@@ -0,0 +1,713 @@
+/**
+  ******************************************************************************
+  * @file    stm32f3xx_hal_dac.c
+  * @author  MCD Application Team
+  * @version V1.1.0
+  * @date    12-Sept-2014
+  * @brief   This file provides firmware functions to manage the following 
+  *          functionalities of the Digital-to-Analog Converter (DAC) peripheral: 
+  *           + DAC channels configuration: trigger, output buffer, data format
+  *           + DMA management      
+  *
+  *
+ @verbatim      
+  ==============================================================================
+                      ##### DAC Peripheral features #####
+  ==============================================================================
+    [..]        
+      *** DAC Channels ***
+      ====================  
+    [..]  
+    The device integrates up to 3 12-bit Digital Analog Converters that can 
+    be used independently or simultaneously (dual mode):
+      (#) DAC1 channel1 with DAC1_OUT1 (PA4) as output
+      (#) DAC1 channel2 with DAC1_OUT2 (PA5) as output 
+          (for STM32F3 devices having 2 channels on DAC1)
+      (#) DAC2 channel1 with DAC2_OUT1 (PA6) as output 
+          (for STM32F3 devices having 2 DAC)
+
+      *** DAC Triggers ***
+      ====================
+    [..]
+    Digital to Analog conversion can be non-triggered using DAC_Trigger_None
+    and DAC1_OUT1/DAC1_OUT2/DAC2_OUT1 is available once writing to DHRx register. 
+    [..] 
+    Digital to Analog conversion can be triggered by:
+      (#) External event: EXTI Line 9 (any GPIOx_Pin9) using DAC_Trigger_Ext_IT9.
+          The used pin (GPIOx_Pin9) must be configured in input mode.
+  
+      (#) Timers TRGO: TIM2, TIM4, TIM5, TIM6, TIM7 and TIM8 
+          (DAC_Trigger_T2_TRGO, DAC_Trigger_T4_TRGO...)
+  
+      (#) Software using DAC_Trigger_Software
+  
+      *** DAC Buffer mode feature ***
+      =============================== 
+      [..] 
+      Each DAC channel integrates an output buffer that can be used to 
+      reduce the output impedance, and to drive external loads directly
+      without having to add an external operational amplifier.
+      To enable, the output buffer use  
+      sConfig.DAC_OutputBuffer = DAC_OutputBuffer_Enable;
+      [..]           
+      (@) Refer to the device datasheet for more details about output 
+          impedance value with and without output buffer.
+            
+       *** DAC wave generation feature ***
+       =================================== 
+       [..]     
+       Both DAC channels of DAC1 can be used to generate
+       note that wave generation is not available in DAC2.
+         (#) Noise wave
+         (#) Triangle wave
+      
+       Wave generation is NOT available in DAC2.
+
+       *** DAC data format ***
+       =======================
+       [..]   
+       The DAC data format can be:
+         (#) 8-bit right alignment using DAC_ALIGN_8B_R
+         (#) 12-bit left alignment using DAC_ALIGN_12B_L
+         (#) 12-bit right alignment using DAC_ALIGN_12B_R
+  
+       *** DAC data value to voltage correspondence ***  
+       ================================================ 
+       [..] 
+       The analog output voltage on each DAC channel pin is determined
+       by the following equation: 
+       DAC_OUTx = VREF+ * DOR / 4095
+       with  DOR is the Data Output Register
+          VEF+ is the input voltage reference (refer to the device datasheet)
+        e.g. To set DAC_OUT1 to 0.7V, use
+          Assuming that VREF+ = 3.3V, DAC_OUT1 = (3.3 * 868) / 4095 = 0.7V
+  
+       *** DMA requests  ***
+       =====================
+       [..]    
+       A DMA1 or DMA2 request can be generated when an external trigger 
+       (but not a software trigger) occurs if DMA1 or DMA2 requests are 
+       enabled using HAL_DAC_Start_DMA()
+       [..]
+       DMA1 requests are mapped as following:
+         (#) DAC1 channel1: mapped either on
+             - DMA1 channel3 
+             - or DMA2 channel3 (for STM32F3 devices having 2 DMA)
+             which must be already configured
+         (#) DAC1 channel2: 
+             (for STM32F3 devices having 2 channels on DAC1)
+             mapped either on
+             - DMA1 channel4 
+             - or DMA2 channel4 (for STM32F3 devices having 2 DMA)
+             which must be already configured
+      
+         (#) DAC2 channel1: mapped either on 
+             (for STM32F3 devices having 2 DAC)
+             - DMA1 channel4 
+             - or DMA2 channel4 (for STM32F3 devices having 2 DMA)
+             which must be already configured
+
+                      ##### How to use this driver #####
+  ==============================================================================
+    [..]          
+      (+) DAC APB clock must be enabled to get write access to DAC
+          registers using HAL_DAC_Init()
+      (+) Configure DAC_OUTx (DAC_OUT1: PA4, DAC_OUT2: PA5) in analog mode.
+      (+) Configure the DAC channel using HAL_DAC_ConfigChannel() function.
+      (+) Enable the DAC channel using HAL_DAC_Start() or HAL_DAC_Start_DMA 
+          functions
+
+     *** Polling mode IO operation ***
+     =================================
+     [..]    
+       (+) Start the DAC peripheral using HAL_DAC_Start() 
+       (+) To read the DAC last data output value value, use the HAL_DAC_GetValue() function.
+       (+) Stop the DAC peripheral using HAL_DAC_Stop()
+       
+     *** DMA mode IO operation ***    
+     ==============================
+     [..]    
+       (+) Start the DAC peripheral using HAL_DAC_Start_DMA(), at this stage the user specify the length 
+           of data to be transfered at each end of conversion 
+       (+) At The end of data transfer HAL_DAC_ConvCpltCallbackCh1()or HAL_DAC_ConvCpltCallbackCh2()  
+           function is executed and user can add his own code by customization of function pointer 
+           HAL_DAC_ConvCpltCallbackCh1 or HAL_DAC_ConvCpltCallbackCh2
+       (+) In case of transfer Error, HAL_DAC_ErrorCallbackCh1() function is executed and user can 
+            add his own code by customization of function pointer HAL_DAC_ErrorCallbackCh1
+       (+) Stop the DAC peripheral using HAL_DAC_Stop_DMA()
+
+     *** Dual mode operation ***    
+     ==============================   
+     [..]
+      (+) When Dual mode is enabled 
+          (i.e DAC1 Channel1 and DAC1 Channel2 are used simultaneously) 
+          (for STM32F3 devices having 2 channels on DAC1).
+          Use HAL_DACEx_DualGetValue() to get digital data to be converted and use
+          HAL_DACEx_DualSetValue() to set digital value to converted simultaneously 
+          in Channel 1 and Channel 2.  
+
+     *** Wave generation operation ***    
+     ==============================   
+     [..]
+      (+) Use HAL_DACEx_TriangleWaveGenerate to generate Triangle signal.
+      (+) Use HAL_DACEx_NoiseWaveGenerate to generate Noise signal.
+   
+          Wave generation is NOT available in DAC2.
+                    
+     *** DAC HAL driver macros list ***
+     ============================================= 
+     [..]
+       Below the list of most used macros in DAC HAL driver.
+       
+      (+) __HAL_DAC_ENABLE : Enable the DAC peripheral
+      (+) __HAL_DAC_DISABLE : Disable the DAC peripheral
+      (+) __HAL_DAC_CLEAR_FLAG: Clear the DAC's pending flags
+      (+) __HAL_DAC_GET_FLAG: Get the selected DAC's flag status 
+      
+     [..]
+      (@) You can refer to the DAC HAL driver header file for more useful macros  
+   
+ @endverbatim    
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; 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 "stm32f3xx_hal.h"
+
+/** @addtogroup STM32F3xx_HAL_Driver
+  * @{
+  */
+
+/** @defgroup DAC DAC HAL module driver
+  * @brief DAC HAL module driver
+  * @{
+  */ 
+ 
+#ifdef HAL_DAC_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+    
+/* Exported functions ---------------------------------------------------------*/
+/** @defgroup DAC_Exported_Functions DAC Exported Functions
+  * @{
+  */
+
+/** @defgroup DAC_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 DAC. 
+      (+) De-initialize the DAC. 
+         
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Initializes the DAC peripheral according to the specified parameters
+  *         in the DAC_InitStruct.
+  * @param  hdac: pointer to a DAC_HandleTypeDef structure that contains
+  *         the configuration information for the specified DAC.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_DAC_Init(DAC_HandleTypeDef* hdac)
+{ 
+  /* Check DAC handle */
+  if(hdac == HAL_NULL)
+  {
+     return HAL_ERROR;
+  }
+  /* Check the parameters */
+  assert_param(IS_DAC_ALL_INSTANCE(hdac->Instance));
+  
+  if(hdac->State == HAL_DAC_STATE_RESET)
+  {  
+    /* Init the low level hardware */
+    HAL_DAC_MspInit(hdac);
+  }
+  
+  /* Initialize the DAC state*/
+  hdac->State = HAL_DAC_STATE_BUSY;
+       
+  /* Set DAC error code to none */
+  hdac->ErrorCode = HAL_DAC_ERROR_NONE;
+  
+  /* Initialize the DAC state*/
+  hdac->State = HAL_DAC_STATE_READY;
+  
+  /* Return function status */
+  return HAL_OK;
+}
+
+/**
+  * @brief  Deinitializes the DAC peripheral registers to their default reset values.
+  * @param  hdac: pointer to a DAC_HandleTypeDef structure that contains
+  *         the configuration information for the specified DAC.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_DAC_DeInit(DAC_HandleTypeDef* hdac)
+{
+  /* Check DAC handle */
+  if(hdac == HAL_NULL)
+  {
+     return HAL_ERROR;
+  }
+
+  /* Check the parameters */
+  assert_param(IS_DAC_ALL_INSTANCE(hdac->Instance));
+
+  /* Change DAC state */
+  hdac->State = HAL_DAC_STATE_BUSY;
+  
+  /* DeInit the low level hardware */
+  HAL_DAC_MspDeInit(hdac);
+  
+  /* Set DAC error code to none */
+  hdac->ErrorCode = HAL_DAC_ERROR_NONE;
+  
+  /* Change DAC state */
+  hdac->State = HAL_DAC_STATE_RESET;
+
+  /* Release Lock */
+  __HAL_UNLOCK(hdac);
+
+  /* Return function status */
+  return HAL_OK;
+}
+
+/**
+  * @brief  Initializes the DAC MSP.
+  * @param  hdac: pointer to a DAC_HandleTypeDef structure that contains
+  *         the configuration information for the specified DAC.
+  * @retval None
+  */
+__weak void HAL_DAC_MspInit(DAC_HandleTypeDef* hdac)
+{
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_DAC_MspInit could be implemented in the user file
+   */ 
+}
+
+/**
+  * @brief  DeInitializes the DAC MSP.
+  * @param  hdac: pointer to a DAC_HandleTypeDef structure that contains
+  *         the configuration information for the specified DAC.  
+  * @retval None
+  */
+__weak void HAL_DAC_MspDeInit(DAC_HandleTypeDef* hdac)
+{
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_DAC_MspDeInit could be implemented in the user file
+   */ 
+}
+
+/**
+  * @}
+  */
+
+/** @defgroup DAC_Exported_Functions_Group2 Input and Output operation functions
+ *  @brief    IO operation functions 
+ *
+@verbatim   
+  ==============================================================================
+             ##### IO operation functions #####
+  ==============================================================================  
+    [..]  This section provides functions allowing to:
+      (+) Start conversion.
+      (+) Stop conversion.
+      (+) Start conversion and enable DMA transfer.
+      (+) Stop conversion and disable DMA transfer.
+      (+) Get result of conversion.
+      (+) Get result of dual mode conversion.
+                     
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Enables DAC and starts conversion of channel.
+  * @param  hdac: pointer to a DAC_HandleTypeDef structure that contains
+  *         the configuration information for the specified DAC.
+  * @param  channel: The selected DAC channel. 
+  *          This parameter can be one of the following values:
+  *            @arg DAC1_CHANNEL_1: DAC1 Channel1 selected
+  *            @arg DAC1_CHANNEL_2: DAC1 Channel2 selected  
+  *            @arg DAC2_CHANNEL_1: DAC2 Channel1 selected  
+  * @retval HAL status
+  */
+__weak HAL_StatusTypeDef HAL_DAC_Start(DAC_HandleTypeDef* hdac, uint32_t channel)
+
+{
+  /* Note : This function is defined into this file for library reference */
+  /*        Function content is located into file stm32f3xx_hal_dac_ex.c  */
+  
+  /* Return function status */
+  return HAL_ERROR;
+}
+
+/**
+  * @brief  Disables DAC and stop conversion of channel.
+  * @param  hdac: pointer to a DAC_HandleTypeDef structure that contains
+  *         the configuration information for the specified DAC.
+  * @param  channel: The selected DAC channel. 
+  *          This parameter can be one of the following values:
+  *            @arg DAC1_CHANNEL_1: DAC1 Channel1 selected
+  *            @arg DAC1_CHANNEL_2: DAC1 Channel2 selected  
+  *            @arg DAC2_CHANNEL_1: DAC2 Channel1 selected  
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_DAC_Stop(DAC_HandleTypeDef* hdac, uint32_t channel)
+{
+  /* Check the parameters */
+  assert_param(IS_DAC_CHANNEL_INSTANCE(hdac->Instance, channel));
+  
+  /* Disable the Peripheral */
+  __HAL_DAC_DISABLE(hdac, channel);
+  
+  /* Change DAC state */
+  hdac->State = HAL_DAC_STATE_READY;
+  
+  /* Return function status */
+  return HAL_OK;
+}
+
+/**
+  * @brief  Disables DAC and stop conversion of channel.
+  * @param  hdac: pointer to a DAC_HandleTypeDef structure that contains
+  *         the configuration information for the specified DAC.
+  * @param  channel: The selected DAC channel. 
+  *          This parameter can be one of the following values:
+  *            @arg DAC1_CHANNEL_1: DAC1 Channel1 selected
+  *            @arg DAC1_CHANNEL_2: DAC1 Channel2 selected  
+  *            @arg DAC2_CHANNEL_1: DAC2 Channel1 selected    
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_DAC_Stop_DMA(DAC_HandleTypeDef* hdac, uint32_t channel)
+{
+  HAL_StatusTypeDef status = HAL_OK;
+    
+  /* Check the parameters */
+  assert_param(IS_DAC_CHANNEL_INSTANCE(hdac->Instance, channel));
+  
+  /* Disable the selected DAC channel DMA request */
+    hdac->Instance->CR &= ~(DAC_CR_DMAEN1 << channel);
+    
+  /* Disable the Peripheral */
+  __HAL_DAC_DISABLE(hdac, channel);
+  
+  /* Disable the DMA Channel */
+  /* Channel1 is used */
+  if (channel == DAC1_CHANNEL_1)
+  {
+    status = HAL_DMA_Abort(hdac->DMA_Handle1);   
+  }
+  else /* Channel2 is used for */
+  {
+    status = HAL_DMA_Abort(hdac->DMA_Handle2);   
+  }
+ 
+  /* Check if DMA Channel effectively disabled */
+  if (status != HAL_OK)
+  {
+    /* Update ADC state machine to error */
+    hdac->State = HAL_DAC_STATE_ERROR;      
+  }
+  else
+  {
+    /* Change DAC state */
+    hdac->State = HAL_DAC_STATE_READY;
+  }
+  
+  /* Return function status */
+  return status;
+}
+
+/**
+  * @brief  Returns the last data output value of the selected DAC channel.
+  * @param  hdac: pointer to a DAC_HandleTypeDef structure that contains
+  *         the configuration information for the specified DAC.
+  * @param  channel: The selected DAC channel. 
+  *          This parameter can be one of the following values:
+  *            @arg DAC1_CHANNEL_1: DAC1 Channel1 selected
+  *            @arg DAC1_CHANNEL_2: DAC1 Channel2 selected  
+  *            @arg DAC2_CHANNEL_1: DAC2 Channel1 selected 
+  * @retval The selected DAC channel data output value.
+  */
+__weak uint32_t HAL_DAC_GetValue(DAC_HandleTypeDef* hdac, uint32_t channel)
+{ 
+  /* Note : This function is defined into this file for library reference */
+  /*        Function content is located into file stm32f3xx_hal_dac_ex.c  */
+
+  /* Return function status */
+  return HAL_OK;
+}
+
+/**
+  * @brief  Returns the last data output value of the selected DAC channel.
+  * @param  hdac: pointer to a DAC_HandleTypeDef structure that contains
+  *         the configuration information for the specified DAC.
+  * @retval The selected DAC channel data output value.
+  */
+__weak uint32_t HAL_DACEx_DualGetValue(DAC_HandleTypeDef* hdac)
+{
+{ 
+  /* Note : This function is defined into this file for library reference */
+  /*        Function content is located into file stm32f3xx_hal_dac_ex.c  */
+
+  /* Return function status */
+  return HAL_OK;
+}
+}
+
+/**
+  * @}
+  */
+  
+/** @defgroup DAC_Exported_Functions_Group3 Peripheral Control functions
+ *  @brief    Peripheral Control functions 
+ *
+@verbatim   
+  ==============================================================================
+             ##### Peripheral Control functions #####
+  ==============================================================================  
+    [..]  This section provides functions allowing to:
+      (+) Configure channels. 
+      (+) Configure Triangle wave generation.
+      (+) Configure Noise wave generation.
+      (+) Set the specified data holding register value for DAC channel.
+      (+) Set the specified data holding register value for Dual DAC channels.
+      
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Configures the selected DAC channel.
+  * @param  hdac: pointer to a DAC_HandleTypeDef structure that contains
+  *         the configuration information for the specified DAC.
+  * @param  sConfig: DAC configuration structure.
+  * @param  channel: The selected DAC channel. 
+  *          This parameter can be one of the following values:
+  *            @arg DAC1_CHANNEL_1: DAC1 Channel1 selected
+  *            @arg DAC1_CHANNEL_2: DAC1 Channel2 selected  
+  *            @arg DAC2_CHANNEL_1: DAC2 Channel1 selected 
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_DAC_ConfigChannel(DAC_HandleTypeDef* hdac, DAC_ChannelConfTypeDef* sConfig, uint32_t channel)
+{
+  uint32_t tmpreg1 = 0, tmpreg2 = 0;
+
+  /* Check the DAC parameters */
+  assert_param(IS_DAC_TRIGGER(sConfig->DAC_Trigger));
+  assert_param(IS_DAC_OUTPUT_BUFFER_STATE(sConfig->DAC_OutputBuffer));
+  assert_param(IS_DAC_CHANNEL(channel));
+  
+  /* Process locked */
+  __HAL_LOCK(hdac);
+  
+  /* Change DAC state */
+  hdac->State = HAL_DAC_STATE_BUSY;
+  
+  /* Get the DAC CR value */
+  tmpreg1 = hdac->Instance->CR;
+  /* Clear BOFFx, TENx, TSELx, WAVEx and MAMPx bits */
+  tmpreg1 &= ~(((uint32_t)(DAC_CR_MAMP1 | DAC_CR_WAVE1 | DAC_CR_TSEL1 | DAC_CR_TEN1 | DAC_CR_BOFF1)) << channel);
+  /* Configure for the selected DAC channel: buffer output, trigger */
+  /* Set TSELx and TENx bits according to DAC_Trigger value */
+  /* Set BOFFx bit according to DAC_OutputBuffer value */   
+  tmpreg2 = (sConfig->DAC_Trigger | sConfig->DAC_OutputBuffer);
+  /* Calculate CR register value depending on DAC_Channel */
+  tmpreg1 |= tmpreg2 << channel;
+  /* Write to DAC CR */
+  hdac->Instance->CR = tmpreg1;
+  /* Disable wave generation */
+  hdac->Instance->CR &= ~(DAC_CR_WAVE1 << channel);
+
+  /* Change DAC state */
+  hdac->State = HAL_DAC_STATE_READY;
+  
+  /* Process unlocked */
+  __HAL_UNLOCK(hdac);
+  
+  /* Return function status */
+  return HAL_OK;
+}
+
+__weak HAL_StatusTypeDef HAL_DAC_SetValue(DAC_HandleTypeDef* hdac, uint32_t channel, uint32_t alignment, uint32_t data)
+{ 
+  /* Note : This function is defined into this file for library reference */
+  /*        Function content is located into file stm32f3xx_hal_dac_ex.c  */
+
+  /* Return function status */
+  return HAL_ERROR;
+}
+
+__weak HAL_StatusTypeDef HAL_DACEx_DualSetValue(DAC_HandleTypeDef* hdac, uint32_t alignment, uint32_t data1, uint32_t data2)
+{ 
+  /* Note : This function is defined into this file for library reference */
+  /*        Function content is located into file stm32f3xx_hal_dac_ex.c  */
+
+  /* Return function status */
+  return HAL_ERROR;
+}
+
+/**
+  * @}
+  */
+
+/** @defgroup DAC_Exported_Functions_Group4 Peripheral State and Error functions
+ *  @brief   DAC Peripheral State and Error functions 
+ *
+@verbatim   
+  ==============================================================================
+            ##### DAC Peripheral State and Error functions #####
+  ==============================================================================  
+    [..]
+    This subsection provides functions allowing to
+      (+) Check the DAC state.
+      (+) Check the DAC Errors.
+
+        
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  return the DAC state
+  * @param  hdac: pointer to a DAC_HandleTypeDef structure that contains
+  *         the configuration information for the specified DAC.
+  * @retval HAL state
+  */
+HAL_DAC_StateTypeDef HAL_DAC_GetState(DAC_HandleTypeDef* hdac)
+{
+  /* Return DAC state */
+  return hdac->State;
+}
+
+/**
+  * @brief  Return the DAC error code
+  * @param  hdac: pointer to a DAC_HandleTypeDef structure that contains
+  *         the configuration information for the specified DAC.
+  * @retval DAC Error Code
+  */
+uint32_t HAL_DAC_GetError(DAC_HandleTypeDef *hdac)
+{
+  return hdac->ErrorCode;
+}
+
+/**
+  * @}
+  */
+
+/** @addtogroup DAC_Exported_Functions_Group2 Input and Output operation functions
+  * @{
+  */
+
+/**
+  * @brief  Conversion complete callback in non blocking mode for Channel1 
+  * @param  hdac: pointer to a DAC_HandleTypeDef structure that contains
+  *         the configuration information for the specified DAC.
+  * @retval None
+  */
+__weak void HAL_DAC_ConvCpltCallbackCh1(DAC_HandleTypeDef* hdac)
+{
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_DAC_ConvCpltCallback1 could be implemented in the user file
+   */
+}
+
+/**
+  * @brief  Conversion half DMA transfer callback in non blocking mode for Channel1 
+  * @param  hdac: pointer to a DAC_HandleTypeDef structure that contains
+  *         the configuration information for the specified DAC.
+  * @retval None
+  */
+__weak void HAL_DAC_ConvHalfCpltCallbackCh1(DAC_HandleTypeDef* hdac)
+{
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_DAC_ConvHalfCpltCallbackCh1 could be implemented in the user file
+   */
+}
+
+/**
+  * @brief  Error DAC callback for Channel1.
+  * @param  hdac: pointer to a DAC_HandleTypeDef structure that contains
+  *         the configuration information for the specified DAC.
+  * @retval None
+  */
+__weak void HAL_DAC_ErrorCallbackCh1(DAC_HandleTypeDef *hdac)
+{
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_DAC_ErrorCallback could be implemented in the user file
+   */
+}
+
+
+/**
+  * @brief  DMA underrun DAC callback for Channel1.
+  * @param  hdac: pointer to a DAC_HandleTypeDef structure that contains
+  *         the configuration information for the specified DAC.
+  * @retval None
+  */
+__weak void HAL_DAC_DMAUnderrunCallbackCh1(DAC_HandleTypeDef *hdac)
+{
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_DAC_DMAUnderrunCallbackCh1 could be implemented in the user file
+   */
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#endif /* HAL_DAC_MODULE_ENABLED */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/