| /** |
| ****************************************************************************** |
| * @file stm32f7xx_hal_dac.c |
| * @author MCD Application Team |
| * @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) 2017 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 Source memory 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****/ |