Johannes Stratmann
added prescaler for 16 bit pwm in LPC1347 target
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Diff: targets/cmsis/TARGET_STM/TARGET_STM32F7/stm32f7xx_hal_dac.c
- Revision:
- 144:ef7eb2e8f9f7
- Parent:
- 83:a036322b8637
--- a/targets/cmsis/TARGET_STM/TARGET_STM32F7/stm32f7xx_hal_dac.c Tue Aug 02 14:07:36 2016 +0000
+++ b/targets/cmsis/TARGET_STM/TARGET_STM32F7/stm32f7xx_hal_dac.c Fri Sep 02 15:07:44 2016 +0100
@@ -1,967 +1,967 @@
-/**
- ******************************************************************************
- * @file stm32f7xx_hal_dac.c
- * @author MCD Application Team
- * @version V1.0.4
- * @date 09-December-2015
- * @brief DAC HAL module driver.
- * This file provides firmware functions to manage the following
- * functionalities of the Digital to Analog Converter (DAC) peripheral:
- * + Initialization and de-initialization functions
- * + IO operation functions
- * + Peripheral Control functions
- * + Peripheral State and Errors functions
- *
- *
- @verbatim
- ==============================================================================
- ##### DAC Peripheral features #####
- ==============================================================================
- [..]
- *** DAC Channels ***
- ====================
- [..]
- The device integrates two 12-bit Digital Analog Converters that can
- be used independently or simultaneously (dual mode):
- (#) DAC channel1 with DAC_OUT1 (PA4) as output
- (#) DAC channel2 with DAC_OUT2 (PA5) as output
-
- *** DAC Triggers ***
- ====================
- [..]
- Digital to Analog conversion can be non-triggered using DAC_TRIGGER_NONE
- and DAC_OUT1/DAC_OUT2 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 can be used to generate
- (#) Noise wave using HAL_DACEx_NoiseWaveGenerate()
- (#) Triangle wave using HAL_DACEx_TriangleWaveGenerate()
-
- *** 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 request can be generated when an external trigger (but not
- a software trigger) occurs if DMA1 requests are enabled using
- HAL_DAC_Start_DMA()
- [..]
- DMA1 requests are mapped as following:
- (#) DAC channel1 : mapped on DMA1 Stream5 channel7 which must be
- already configured
- (#) DAC channel2 : mapped on DMA1 Stream6 channel7 which must be
- already configured
-
- -@- For Dual mode and specific signal (Triangle and noise) generation please
- refer to Extension Features Driver description
-
-
- ##### 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, 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 transferred 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()
-
-
- *** 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>© 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 "stm32f7xx_hal.h"
-
-/** @addtogroup STM32F7xx_HAL_Driver
- * @{
- */
-
-/** @defgroup DAC DAC
- * @brief DAC driver modules
- * @{
- */
-
-#ifdef HAL_DAC_MODULE_ENABLED
-
-/* Private typedef -----------------------------------------------------------*/
-/* Private define ------------------------------------------------------------*/
-/* Private macro -------------------------------------------------------------*/
-/* Private variables ---------------------------------------------------------*/
-/** @addtogroup DAC_Private_Functions
- * @{
- */
-/* Private function prototypes -----------------------------------------------*/
-static void DAC_DMAConvCpltCh1(DMA_HandleTypeDef *hdma);
-static void DAC_DMAErrorCh1(DMA_HandleTypeDef *hdma);
-static void DAC_DMAHalfConvCpltCh1(DMA_HandleTypeDef *hdma);
-/**
- * @}
- */
-
-/* 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 == NULL)
- {
- return HAL_ERROR;
- }
- /* Check the parameters */
- assert_param(IS_DAC_ALL_INSTANCE(hdac->Instance));
-
- if(hdac->State == HAL_DAC_STATE_RESET)
- {
- /* Allocate lock resource and initialize it */
- hdac->Lock = HAL_UNLOCKED;
- /* 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 == 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)
-{
- /* Prevent unused argument(s) compilation warning */
- UNUSED(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)
-{
- /* Prevent unused argument(s) compilation warning */
- UNUSED(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 IO 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.
-
-@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 DAC_CHANNEL_1: DAC Channel1 selected
- * @arg DAC_CHANNEL_2: DAC Channel2 selected
- * @retval HAL status
- */
-HAL_StatusTypeDef HAL_DAC_Start(DAC_HandleTypeDef* hdac, uint32_t Channel)
-{
- uint32_t tmp1 = 0, tmp2 = 0;
-
- /* Check the parameters */
- assert_param(IS_DAC_CHANNEL(Channel));
-
- /* Process locked */
- __HAL_LOCK(hdac);
-
- /* Change DAC state */
- hdac->State = HAL_DAC_STATE_BUSY;
-
- /* Enable the Peripheral */
- __HAL_DAC_ENABLE(hdac, Channel);
-
- if(Channel == DAC_CHANNEL_1)
- {
- tmp1 = hdac->Instance->CR & DAC_CR_TEN1;
- tmp2 = hdac->Instance->CR & DAC_CR_TSEL1;
- /* Check if software trigger enabled */
- if((tmp1 == DAC_CR_TEN1) && (tmp2 == DAC_CR_TSEL1))
- {
- /* Enable the selected DAC software conversion */
- hdac->Instance->SWTRIGR |= (uint32_t)DAC_SWTRIGR_SWTRIG1;
- }
- }
- else
- {
- tmp1 = hdac->Instance->CR & DAC_CR_TEN2;
- tmp2 = hdac->Instance->CR & DAC_CR_TSEL2;
- /* Check if software trigger enabled */
- if((tmp1 == DAC_CR_TEN2) && (tmp2 == DAC_CR_TSEL2))
- {
- /* Enable the selected DAC software conversion*/
- hdac->Instance->SWTRIGR |= (uint32_t)DAC_SWTRIGR_SWTRIG2;
- }
- }
-
- /* Change DAC state */
- hdac->State = HAL_DAC_STATE_READY;
-
- /* Process unlocked */
- __HAL_UNLOCK(hdac);
-
- /* 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 DAC_CHANNEL_1: DAC Channel1 selected
- * @arg DAC_CHANNEL_2: DAC Channel2 selected
- * @retval HAL status
- */
-HAL_StatusTypeDef HAL_DAC_Stop(DAC_HandleTypeDef* hdac, uint32_t Channel)
-{
- /* Check the parameters */
- assert_param(IS_DAC_CHANNEL(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 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 DAC_CHANNEL_1: DAC Channel1 selected
- * @arg DAC_CHANNEL_2: DAC Channel2 selected
- * @param pData: The destination peripheral Buffer address.
- * @param Length: The length of data to be transferred from memory to DAC peripheral
- * @param Alignment: Specifies the data alignment for DAC channel.
- * This parameter can be one of the following values:
- * @arg DAC_ALIGN_8B_R: 8bit right data alignment selected
- * @arg DAC_ALIGN_12B_L: 12bit left data alignment selected
- * @arg DAC_ALIGN_12B_R: 12bit right data alignment selected
- * @retval HAL status
- */
-HAL_StatusTypeDef HAL_DAC_Start_DMA(DAC_HandleTypeDef* hdac, uint32_t Channel, uint32_t* pData, uint32_t Length, uint32_t Alignment)
-{
- uint32_t tmpreg = 0;
-
- /* Check the parameters */
- assert_param(IS_DAC_CHANNEL(Channel));
- assert_param(IS_DAC_ALIGN(Alignment));
-
- /* Process locked */
- __HAL_LOCK(hdac);
-
- /* Change DAC state */
- hdac->State = HAL_DAC_STATE_BUSY;
-
- if(Channel == DAC_CHANNEL_1)
- {
- /* Set the DMA transfer complete callback for channel1 */
- hdac->DMA_Handle1->XferCpltCallback = DAC_DMAConvCpltCh1;
-
- /* Set the DMA half transfer complete callback for channel1 */
- hdac->DMA_Handle1->XferHalfCpltCallback = DAC_DMAHalfConvCpltCh1;
-
- /* Set the DMA error callback for channel1 */
- hdac->DMA_Handle1->XferErrorCallback = DAC_DMAErrorCh1;
-
- /* Enable the selected DAC channel1 DMA request */
- hdac->Instance->CR |= DAC_CR_DMAEN1;
-
- /* Case of use of channel 1 */
- switch(Alignment)
- {
- case DAC_ALIGN_12B_R:
- /* Get DHR12R1 address */
- tmpreg = (uint32_t)&hdac->Instance->DHR12R1;
- break;
- case DAC_ALIGN_12B_L:
- /* Get DHR12L1 address */
- tmpreg = (uint32_t)&hdac->Instance->DHR12L1;
- break;
- case DAC_ALIGN_8B_R:
- /* Get DHR8R1 address */
- tmpreg = (uint32_t)&hdac->Instance->DHR8R1;
- break;
- default:
- break;
- }
- }
- else
- {
- /* Set the DMA transfer complete callback for channel2 */
- hdac->DMA_Handle2->XferCpltCallback = DAC_DMAConvCpltCh2;
-
- /* Set the DMA half transfer complete callback for channel2 */
- hdac->DMA_Handle2->XferHalfCpltCallback = DAC_DMAHalfConvCpltCh2;
-
- /* Set the DMA error callback for channel2 */
- hdac->DMA_Handle2->XferErrorCallback = DAC_DMAErrorCh2;
-
- /* Enable the selected DAC channel2 DMA request */
- hdac->Instance->CR |= DAC_CR_DMAEN2;
-
- /* Case of use of channel 2 */
- switch(Alignment)
- {
- case DAC_ALIGN_12B_R:
- /* Get DHR12R2 address */
- tmpreg = (uint32_t)&hdac->Instance->DHR12R2;
- break;
- case DAC_ALIGN_12B_L:
- /* Get DHR12L2 address */
- tmpreg = (uint32_t)&hdac->Instance->DHR12L2;
- break;
- case DAC_ALIGN_8B_R:
- /* Get DHR8R2 address */
- tmpreg = (uint32_t)&hdac->Instance->DHR8R2;
- break;
- default:
- break;
- }
- }
-
- /* Enable the DMA Stream */
- if(Channel == DAC_CHANNEL_1)
- {
- /* Enable the DAC DMA underrun interrupt */
- __HAL_DAC_ENABLE_IT(hdac, DAC_IT_DMAUDR1);
-
- /* Enable the DMA Stream */
- HAL_DMA_Start_IT(hdac->DMA_Handle1, (uint32_t)pData, tmpreg, Length);
- }
- else
- {
- /* Enable the DAC DMA underrun interrupt */
- __HAL_DAC_ENABLE_IT(hdac, DAC_IT_DMAUDR2);
-
- /* Enable the DMA Stream */
- HAL_DMA_Start_IT(hdac->DMA_Handle2, (uint32_t)pData, tmpreg, Length);
- }
-
- /* Enable the Peripheral */
- __HAL_DAC_ENABLE(hdac, Channel);
-
- /* Process Unlocked */
- __HAL_UNLOCK(hdac);
-
- /* 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 DAC_CHANNEL_1: DAC Channel1 selected
- * @arg DAC_CHANNEL_2: DAC Channel2 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(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 == DAC_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 DAC 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 DAC_CHANNEL_1: DAC Channel1 selected
- * @arg DAC_CHANNEL_2: DAC Channel2 selected
- * @retval The selected DAC channel data output value.
- */
-uint32_t HAL_DAC_GetValue(DAC_HandleTypeDef* hdac, uint32_t Channel)
-{
- /* Check the parameters */
- assert_param(IS_DAC_CHANNEL(Channel));
-
- /* Returns the DAC channel data output register value */
- if(Channel == DAC_CHANNEL_1)
- {
- return hdac->Instance->DOR1;
- }
- else
- {
- return hdac->Instance->DOR2;
- }
-}
-
-/**
- * @brief Handles DAC interrupt request
- * @param hdac: pointer to a DAC_HandleTypeDef structure that contains
- * the configuration information for the specified DAC.
- * @retval None
- */
-void HAL_DAC_IRQHandler(DAC_HandleTypeDef* hdac)
-{
- /* Check underrun channel 1 flag */
- if(__HAL_DAC_GET_FLAG(hdac, DAC_FLAG_DMAUDR1))
- {
- /* Change DAC state to error state */
- hdac->State = HAL_DAC_STATE_ERROR;
-
- /* Set DAC error code to channel1 DMA underrun error */
- hdac->ErrorCode |= HAL_DAC_ERROR_DMAUNDERRUNCH1;
-
- /* Clear the underrun flag */
- __HAL_DAC_CLEAR_FLAG(hdac,DAC_FLAG_DMAUDR1);
-
- /* Disable the selected DAC channel1 DMA request */
- hdac->Instance->CR &= ~DAC_CR_DMAEN1;
-
- /* Error callback */
- HAL_DAC_DMAUnderrunCallbackCh1(hdac);
- }
- /* Check underrun channel 2 flag */
- if(__HAL_DAC_GET_FLAG(hdac, DAC_FLAG_DMAUDR2))
- {
- /* Change DAC state to error state */
- hdac->State = HAL_DAC_STATE_ERROR;
-
- /* Set DAC error code to channel2 DMA underrun error */
- hdac->ErrorCode |= HAL_DAC_ERROR_DMAUNDERRUNCH2;
-
- /* Clear the underrun flag */
- __HAL_DAC_CLEAR_FLAG(hdac,DAC_FLAG_DMAUDR2);
-
- /* Disable the selected DAC channel1 DMA request */
- hdac->Instance->CR &= ~DAC_CR_DMAEN2;
-
- /* Error callback */
- HAL_DACEx_DMAUnderrunCallbackCh2(hdac);
- }
-}
-
-/**
- * @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)
-{
- /* Prevent unused argument(s) compilation warning */
- UNUSED(hdac);
-
- /* NOTE : This function Should not be modified, when the callback is needed,
- the HAL_DAC_ConvCpltCallback 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)
-{
- /* Prevent unused argument(s) compilation warning */
- UNUSED(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)
-{
- /* Prevent unused argument(s) compilation warning */
- UNUSED(hdac);
-
- /* NOTE : This function Should not be modified, when the callback is needed,
- the HAL_DAC_ErrorCallbackCh1 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)
-{
- /* Prevent unused argument(s) compilation warning */
- UNUSED(hdac);
-
- /* NOTE : This function Should not be modified, when the callback is needed,
- the HAL_DAC_DMAUnderrunCallbackCh1 could be implemented in the user file
- */
-}
-
-/**
- * @}
- */
-
-/** @defgroup DAC_Exported_Functions_Group3 Peripheral Control functions
- * @brief Peripheral Control functions
- *
-@verbatim
- ==============================================================================
- ##### Peripheral Control functions #####
- ==============================================================================
- [..] This section provides functions allowing to:
- (+) Configure channels.
- (+) Set the specified data holding register value for DAC channel.
-
-@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 DAC_CHANNEL_1: DAC Channel1 selected
- * @arg DAC_CHANNEL_2: DAC Channel2 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;
-}
-
-/**
- * @brief Set the specified data holding register value for 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 DAC_CHANNEL_1: DAC Channel1 selected
- * @arg DAC_CHANNEL_2: DAC Channel2 selected
- * @param Alignment: Specifies the data alignment.
- * This parameter can be one of the following values:
- * @arg DAC_ALIGN_8B_R: 8bit right data alignment selected
- * @arg DAC_ALIGN_12B_L: 12bit left data alignment selected
- * @arg DAC_ALIGN_12B_R: 12bit right data alignment selected
- * @param Data: Data to be loaded in the selected data holding register.
- * @retval HAL status
- */
-HAL_StatusTypeDef HAL_DAC_SetValue(DAC_HandleTypeDef* hdac, uint32_t Channel, uint32_t Alignment, uint32_t Data)
-{
- __IO uint32_t tmp = 0;
-
- /* Check the parameters */
- assert_param(IS_DAC_CHANNEL(Channel));
- assert_param(IS_DAC_ALIGN(Alignment));
- assert_param(IS_DAC_DATA(Data));
-
- tmp = (uint32_t)hdac->Instance;
- if(Channel == DAC_CHANNEL_1)
- {
- tmp += DAC_DHR12R1_ALIGNMENT(Alignment);
- }
- else
- {
- tmp += DAC_DHR12R2_ALIGNMENT(Alignment);
- }
-
- /* Set the DAC channel1 selected data holding register */
- *(__IO uint32_t *) tmp = Data;
-
- /* Return function status */
- return HAL_OK;
-}
-
-/**
- * @}
- */
-
-/** @defgroup DAC_Exported_Functions_Group4 Peripheral State and Errors functions
- * @brief Peripheral State and Errors functions
- *
-@verbatim
- ==============================================================================
- ##### Peripheral State and Errors 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;
-}
-
-/**
- * @}
- */
-
-/**
- * @brief DMA conversion complete callback.
- * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
- * the configuration information for the specified DMA module.
- * @retval None
- */
-static void DAC_DMAConvCpltCh1(DMA_HandleTypeDef *hdma)
-{
- DAC_HandleTypeDef* hdac = ( DAC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
-
- HAL_DAC_ConvCpltCallbackCh1(hdac);
-
- hdac->State= HAL_DAC_STATE_READY;
-}
-
-/**
- * @brief DMA half transfer complete callback.
- * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
- * the configuration information for the specified DMA module.
- * @retval None
- */
-static void DAC_DMAHalfConvCpltCh1(DMA_HandleTypeDef *hdma)
-{
- DAC_HandleTypeDef* hdac = ( DAC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
- /* Conversion complete callback */
- HAL_DAC_ConvHalfCpltCallbackCh1(hdac);
-}
-
-/**
- * @brief DMA error callback
- * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
- * the configuration information for the specified DMA module.
- * @retval None
- */
-static void DAC_DMAErrorCh1(DMA_HandleTypeDef *hdma)
-{
- DAC_HandleTypeDef* hdac = ( DAC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
-
- /* Set DAC error code to DMA error */
- hdac->ErrorCode |= HAL_DAC_ERROR_DMA;
-
- HAL_DAC_ErrorCallbackCh1(hdac);
-
- hdac->State= HAL_DAC_STATE_READY;
-}
-
-/**
- * @}
- */
-
-#endif /* HAL_DAC_MODULE_ENABLED */
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+/**
+ ******************************************************************************
+ * @file stm32f7xx_hal_dac.c
+ * @author MCD Application Team
+ * @version V1.1.0
+ * @date 22-April-2016
+ * @brief DAC HAL module driver.
+ * This file provides firmware functions to manage the following
+ * functionalities of the Digital to Analog Converter (DAC) peripheral:
+ * + Initialization and de-initialization functions
+ * + IO operation functions
+ * + Peripheral Control functions
+ * + Peripheral State and Errors functions
+ *
+ *
+ @verbatim
+ ==============================================================================
+ ##### DAC Peripheral features #####
+ ==============================================================================
+ [..]
+ *** DAC Channels ***
+ ====================
+ [..]
+ The device integrates two 12-bit Digital Analog Converters that can
+ be used independently or simultaneously (dual mode):
+ (#) DAC channel1 with DAC_OUT1 (PA4) as output
+ (#) DAC channel2 with DAC_OUT2 (PA5) as output
+
+ *** DAC Triggers ***
+ ====================
+ [..]
+ Digital to Analog conversion can be non-triggered using DAC_TRIGGER_NONE
+ and DAC_OUT1/DAC_OUT2 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 can be used to generate
+ (#) Noise wave using HAL_DACEx_NoiseWaveGenerate()
+ (#) Triangle wave using HAL_DACEx_TriangleWaveGenerate()
+
+ *** 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 request can be generated when an external trigger (but not
+ a software trigger) occurs if DMA1 requests are enabled using
+ HAL_DAC_Start_DMA()
+ [..]
+ DMA1 requests are mapped as following:
+ (#) DAC channel1 : mapped on DMA1 Stream5 channel7 which must be
+ already configured
+ (#) DAC channel2 : mapped on DMA1 Stream6 channel7 which must be
+ already configured
+
+ -@- For Dual mode and specific signal (Triangle and noise) generation please
+ refer to Extension Features Driver description
+
+
+ ##### 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, 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 transferred 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()
+
+
+ *** 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>© COPYRIGHT(c) 2016 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 "stm32f7xx_hal.h"
+
+/** @addtogroup STM32F7xx_HAL_Driver
+ * @{
+ */
+
+/** @defgroup DAC DAC
+ * @brief DAC driver modules
+ * @{
+ */
+
+#ifdef HAL_DAC_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/** @addtogroup DAC_Private_Functions
+ * @{
+ */
+/* Private function prototypes -----------------------------------------------*/
+static void DAC_DMAConvCpltCh1(DMA_HandleTypeDef *hdma);
+static void DAC_DMAErrorCh1(DMA_HandleTypeDef *hdma);
+static void DAC_DMAHalfConvCpltCh1(DMA_HandleTypeDef *hdma);
+/**
+ * @}
+ */
+
+/* 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 == NULL)
+ {
+ return HAL_ERROR;
+ }
+ /* Check the parameters */
+ assert_param(IS_DAC_ALL_INSTANCE(hdac->Instance));
+
+ if(hdac->State == HAL_DAC_STATE_RESET)
+ {
+ /* Allocate lock resource and initialize it */
+ hdac->Lock = HAL_UNLOCKED;
+ /* 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 == 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)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(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)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(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 IO 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.
+
+@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 DAC_CHANNEL_1: DAC Channel1 selected
+ * @arg DAC_CHANNEL_2: DAC Channel2 selected
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_DAC_Start(DAC_HandleTypeDef* hdac, uint32_t Channel)
+{
+ uint32_t tmp1 = 0, tmp2 = 0;
+
+ /* Check the parameters */
+ assert_param(IS_DAC_CHANNEL(Channel));
+
+ /* Process locked */
+ __HAL_LOCK(hdac);
+
+ /* Change DAC state */
+ hdac->State = HAL_DAC_STATE_BUSY;
+
+ /* Enable the Peripheral */
+ __HAL_DAC_ENABLE(hdac, Channel);
+
+ if(Channel == DAC_CHANNEL_1)
+ {
+ tmp1 = hdac->Instance->CR & DAC_CR_TEN1;
+ tmp2 = hdac->Instance->CR & DAC_CR_TSEL1;
+ /* Check if software trigger enabled */
+ if((tmp1 == DAC_CR_TEN1) && (tmp2 == DAC_CR_TSEL1))
+ {
+ /* Enable the selected DAC software conversion */
+ hdac->Instance->SWTRIGR |= (uint32_t)DAC_SWTRIGR_SWTRIG1;
+ }
+ }
+ else
+ {
+ tmp1 = hdac->Instance->CR & DAC_CR_TEN2;
+ tmp2 = hdac->Instance->CR & DAC_CR_TSEL2;
+ /* Check if software trigger enabled */
+ if((tmp1 == DAC_CR_TEN2) && (tmp2 == DAC_CR_TSEL2))
+ {
+ /* Enable the selected DAC software conversion*/
+ hdac->Instance->SWTRIGR |= (uint32_t)DAC_SWTRIGR_SWTRIG2;
+ }
+ }
+
+ /* Change DAC state */
+ hdac->State = HAL_DAC_STATE_READY;
+
+ /* Process unlocked */
+ __HAL_UNLOCK(hdac);
+
+ /* 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 DAC_CHANNEL_1: DAC Channel1 selected
+ * @arg DAC_CHANNEL_2: DAC Channel2 selected
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_DAC_Stop(DAC_HandleTypeDef* hdac, uint32_t Channel)
+{
+ /* Check the parameters */
+ assert_param(IS_DAC_CHANNEL(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 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 DAC_CHANNEL_1: DAC Channel1 selected
+ * @arg DAC_CHANNEL_2: DAC Channel2 selected
+ * @param pData: The destination peripheral Buffer address.
+ * @param Length: The length of data to be transferred from memory to DAC peripheral
+ * @param Alignment: Specifies the data alignment for DAC channel.
+ * This parameter can be one of the following values:
+ * @arg DAC_ALIGN_8B_R: 8bit right data alignment selected
+ * @arg DAC_ALIGN_12B_L: 12bit left data alignment selected
+ * @arg DAC_ALIGN_12B_R: 12bit right data alignment selected
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_DAC_Start_DMA(DAC_HandleTypeDef* hdac, uint32_t Channel, uint32_t* pData, uint32_t Length, uint32_t Alignment)
+{
+ uint32_t tmpreg = 0;
+
+ /* Check the parameters */
+ assert_param(IS_DAC_CHANNEL(Channel));
+ assert_param(IS_DAC_ALIGN(Alignment));
+
+ /* Process locked */
+ __HAL_LOCK(hdac);
+
+ /* Change DAC state */
+ hdac->State = HAL_DAC_STATE_BUSY;
+
+ if(Channel == DAC_CHANNEL_1)
+ {
+ /* Set the DMA transfer complete callback for channel1 */
+ hdac->DMA_Handle1->XferCpltCallback = DAC_DMAConvCpltCh1;
+
+ /* Set the DMA half transfer complete callback for channel1 */
+ hdac->DMA_Handle1->XferHalfCpltCallback = DAC_DMAHalfConvCpltCh1;
+
+ /* Set the DMA error callback for channel1 */
+ hdac->DMA_Handle1->XferErrorCallback = DAC_DMAErrorCh1;
+
+ /* Enable the selected DAC channel1 DMA request */
+ hdac->Instance->CR |= DAC_CR_DMAEN1;
+
+ /* Case of use of channel 1 */
+ switch(Alignment)
+ {
+ case DAC_ALIGN_12B_R:
+ /* Get DHR12R1 address */
+ tmpreg = (uint32_t)&hdac->Instance->DHR12R1;
+ break;
+ case DAC_ALIGN_12B_L:
+ /* Get DHR12L1 address */
+ tmpreg = (uint32_t)&hdac->Instance->DHR12L1;
+ break;
+ case DAC_ALIGN_8B_R:
+ /* Get DHR8R1 address */
+ tmpreg = (uint32_t)&hdac->Instance->DHR8R1;
+ break;
+ default:
+ break;
+ }
+ }
+ else
+ {
+ /* Set the DMA transfer complete callback for channel2 */
+ hdac->DMA_Handle2->XferCpltCallback = DAC_DMAConvCpltCh2;
+
+ /* Set the DMA half transfer complete callback for channel2 */
+ hdac->DMA_Handle2->XferHalfCpltCallback = DAC_DMAHalfConvCpltCh2;
+
+ /* Set the DMA error callback for channel2 */
+ hdac->DMA_Handle2->XferErrorCallback = DAC_DMAErrorCh2;
+
+ /* Enable the selected DAC channel2 DMA request */
+ hdac->Instance->CR |= DAC_CR_DMAEN2;
+
+ /* Case of use of channel 2 */
+ switch(Alignment)
+ {
+ case DAC_ALIGN_12B_R:
+ /* Get DHR12R2 address */
+ tmpreg = (uint32_t)&hdac->Instance->DHR12R2;
+ break;
+ case DAC_ALIGN_12B_L:
+ /* Get DHR12L2 address */
+ tmpreg = (uint32_t)&hdac->Instance->DHR12L2;
+ break;
+ case DAC_ALIGN_8B_R:
+ /* Get DHR8R2 address */
+ tmpreg = (uint32_t)&hdac->Instance->DHR8R2;
+ break;
+ default:
+ break;
+ }
+ }
+
+ /* Enable the DMA Stream */
+ if(Channel == DAC_CHANNEL_1)
+ {
+ /* Enable the DAC DMA underrun interrupt */
+ __HAL_DAC_ENABLE_IT(hdac, DAC_IT_DMAUDR1);
+
+ /* Enable the DMA Stream */
+ HAL_DMA_Start_IT(hdac->DMA_Handle1, (uint32_t)pData, tmpreg, Length);
+ }
+ else
+ {
+ /* Enable the DAC DMA underrun interrupt */
+ __HAL_DAC_ENABLE_IT(hdac, DAC_IT_DMAUDR2);
+
+ /* Enable the DMA Stream */
+ HAL_DMA_Start_IT(hdac->DMA_Handle2, (uint32_t)pData, tmpreg, Length);
+ }
+
+ /* Enable the Peripheral */
+ __HAL_DAC_ENABLE(hdac, Channel);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hdac);
+
+ /* 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 DAC_CHANNEL_1: DAC Channel1 selected
+ * @arg DAC_CHANNEL_2: DAC Channel2 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(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 == DAC_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 DAC 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 DAC_CHANNEL_1: DAC Channel1 selected
+ * @arg DAC_CHANNEL_2: DAC Channel2 selected
+ * @retval The selected DAC channel data output value.
+ */
+uint32_t HAL_DAC_GetValue(DAC_HandleTypeDef* hdac, uint32_t Channel)
+{
+ /* Check the parameters */
+ assert_param(IS_DAC_CHANNEL(Channel));
+
+ /* Returns the DAC channel data output register value */
+ if(Channel == DAC_CHANNEL_1)
+ {
+ return hdac->Instance->DOR1;
+ }
+ else
+ {
+ return hdac->Instance->DOR2;
+ }
+}
+
+/**
+ * @brief Handles DAC interrupt request
+ * @param hdac: pointer to a DAC_HandleTypeDef structure that contains
+ * the configuration information for the specified DAC.
+ * @retval None
+ */
+void HAL_DAC_IRQHandler(DAC_HandleTypeDef* hdac)
+{
+ /* Check underrun channel 1 flag */
+ if(__HAL_DAC_GET_FLAG(hdac, DAC_FLAG_DMAUDR1))
+ {
+ /* Change DAC state to error state */
+ hdac->State = HAL_DAC_STATE_ERROR;
+
+ /* Set DAC error code to channel1 DMA underrun error */
+ hdac->ErrorCode |= HAL_DAC_ERROR_DMAUNDERRUNCH1;
+
+ /* Clear the underrun flag */
+ __HAL_DAC_CLEAR_FLAG(hdac,DAC_FLAG_DMAUDR1);
+
+ /* Disable the selected DAC channel1 DMA request */
+ hdac->Instance->CR &= ~DAC_CR_DMAEN1;
+
+ /* Error callback */
+ HAL_DAC_DMAUnderrunCallbackCh1(hdac);
+ }
+ /* Check underrun channel 2 flag */
+ if(__HAL_DAC_GET_FLAG(hdac, DAC_FLAG_DMAUDR2))
+ {
+ /* Change DAC state to error state */
+ hdac->State = HAL_DAC_STATE_ERROR;
+
+ /* Set DAC error code to channel2 DMA underrun error */
+ hdac->ErrorCode |= HAL_DAC_ERROR_DMAUNDERRUNCH2;
+
+ /* Clear the underrun flag */
+ __HAL_DAC_CLEAR_FLAG(hdac,DAC_FLAG_DMAUDR2);
+
+ /* Disable the selected DAC channel1 DMA request */
+ hdac->Instance->CR &= ~DAC_CR_DMAEN2;
+
+ /* Error callback */
+ HAL_DACEx_DMAUnderrunCallbackCh2(hdac);
+ }
+}
+
+/**
+ * @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)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hdac);
+
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_DAC_ConvCpltCallback 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)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(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)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hdac);
+
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_DAC_ErrorCallbackCh1 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)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hdac);
+
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_DAC_DMAUnderrunCallbackCh1 could be implemented in the user file
+ */
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup DAC_Exported_Functions_Group3 Peripheral Control functions
+ * @brief Peripheral Control functions
+ *
+@verbatim
+ ==============================================================================
+ ##### Peripheral Control functions #####
+ ==============================================================================
+ [..] This section provides functions allowing to:
+ (+) Configure channels.
+ (+) Set the specified data holding register value for DAC channel.
+
+@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 DAC_CHANNEL_1: DAC Channel1 selected
+ * @arg DAC_CHANNEL_2: DAC Channel2 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;
+}
+
+/**
+ * @brief Set the specified data holding register value for 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 DAC_CHANNEL_1: DAC Channel1 selected
+ * @arg DAC_CHANNEL_2: DAC Channel2 selected
+ * @param Alignment: Specifies the data alignment.
+ * This parameter can be one of the following values:
+ * @arg DAC_ALIGN_8B_R: 8bit right data alignment selected
+ * @arg DAC_ALIGN_12B_L: 12bit left data alignment selected
+ * @arg DAC_ALIGN_12B_R: 12bit right data alignment selected
+ * @param Data: Data to be loaded in the selected data holding register.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_DAC_SetValue(DAC_HandleTypeDef* hdac, uint32_t Channel, uint32_t Alignment, uint32_t Data)
+{
+ __IO uint32_t tmp = 0;
+
+ /* Check the parameters */
+ assert_param(IS_DAC_CHANNEL(Channel));
+ assert_param(IS_DAC_ALIGN(Alignment));
+ assert_param(IS_DAC_DATA(Data));
+
+ tmp = (uint32_t)hdac->Instance;
+ if(Channel == DAC_CHANNEL_1)
+ {
+ tmp += DAC_DHR12R1_ALIGNMENT(Alignment);
+ }
+ else
+ {
+ tmp += DAC_DHR12R2_ALIGNMENT(Alignment);
+ }
+
+ /* Set the DAC channel1 selected data holding register */
+ *(__IO uint32_t *) tmp = Data;
+
+ /* Return function status */
+ return HAL_OK;
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup DAC_Exported_Functions_Group4 Peripheral State and Errors functions
+ * @brief Peripheral State and Errors functions
+ *
+@verbatim
+ ==============================================================================
+ ##### Peripheral State and Errors 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;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @brief DMA conversion complete callback.
+ * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
+ * the configuration information for the specified DMA module.
+ * @retval None
+ */
+static void DAC_DMAConvCpltCh1(DMA_HandleTypeDef *hdma)
+{
+ DAC_HandleTypeDef* hdac = ( DAC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+
+ HAL_DAC_ConvCpltCallbackCh1(hdac);
+
+ hdac->State= HAL_DAC_STATE_READY;
+}
+
+/**
+ * @brief DMA half transfer complete callback.
+ * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
+ * the configuration information for the specified DMA module.
+ * @retval None
+ */
+static void DAC_DMAHalfConvCpltCh1(DMA_HandleTypeDef *hdma)
+{
+ DAC_HandleTypeDef* hdac = ( DAC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+ /* Conversion complete callback */
+ HAL_DAC_ConvHalfCpltCallbackCh1(hdac);
+}
+
+/**
+ * @brief DMA error callback
+ * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
+ * the configuration information for the specified DMA module.
+ * @retval None
+ */
+static void DAC_DMAErrorCh1(DMA_HandleTypeDef *hdma)
+{
+ DAC_HandleTypeDef* hdac = ( DAC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+
+ /* Set DAC error code to DMA error */
+ hdac->ErrorCode |= HAL_DAC_ERROR_DMA;
+
+ HAL_DAC_ErrorCallbackCh1(hdac);
+
+ hdac->State= HAL_DAC_STATE_READY;
+}
+
+/**
+ * @}
+ */
+
+#endif /* HAL_DAC_MODULE_ENABLED */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/