Eric Lewiston
Hal Drivers for L4
Dependents: BSP OneHopeOnePrayer FINAL_AUDIO_RECORD AudioDemo
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STM32L4xx_HAL_Driver
by 
Senior Design: Sound Monitor
Diff: Src/stm32l4xx_hal_dac.c
- Revision:
- 2:7aef7655b0a8
- Parent:
- 1:271ce2251692
--- a/Src/stm32l4xx_hal_dac.c Thu Nov 12 20:49:49 2015 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,1166 +0,0 @@
-/**
- ******************************************************************************
- * @file stm32l4xx_hal_dac.c
- * @author MCD Application Team
- * @version V1.1.0
- * @date 16-September-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 ***
- ====================
- [..]
- STM32L4 devices integrate two 12-bit Digital Analog Converters
-
- The 2 converters (i.e. channel1 & channel2)
- can be used independently or simultaneously (dual mode):
- (#) DAC channel1 with DAC_OUT1 (PA4) as output or connected to on-chip
- peripherals (ex. OPAMPs, comparators).
- (#) DAC channel2 with DAC_OUT2 (PA5) as output or connected to on-chip
- peripherals (ex. OPAMPs, comparators).
-
- *** 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_PIN_9) using DAC_TRIGGER_EXT_IT9.
- The used pin (GPIOx_PIN_9) must be configured in input mode.
-
- (#) Timers TRGO: TIM2, TIM3, TIM4, TIM5, TIM6 and TIM7
- (DAC_TRIGGER_T2_TRGO, DAC_TRIGGER_T3_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 connect feature ***
- ===============================
- [..]
- Each DAC channel can be connected internally.
- To connect, use
- sConfig.DAC_ConnectOnChipPeripheral = DAC_CHIPCONNECT_ENABLE;
-
- *** GPIO configurations guidelines ***
- =====================
- [..]
- When a DAC channel is used (ex channel1 on PA4) and the other is not
- (ex channel2 on PA5 is configured in Analog and disabled).
- Channel1 may disturb channel2 as coupling effect.
- Note that there is no coupling on channel2 as soon as channel2 is turned on.
- Coupling on adjacent channel could be avoided as follows:
- when unused PA5 is configured as INPUT PULL-UP or DOWN.
- PA5 is configured in ANALOG just before it is turned on.
-
- *** DAC Sample and Hold feature ***
- ========================
- [..]
- For each converter, 2 modes are supported: normal mode and
- "sample and hold" mode (i.e. low power mode).
- In the sample and hold mode, the DAC core converts data, then holds the
- converted voltage on a capacitor. When not converting, the DAC cores and
- buffer are completely turned off between samples and the DAC output is
- tri-stated, therefore reducing the overall power consumption. A new
- stabilization period is needed before each new conversion.
-
- The sample and hold allow setting internal or external voltage @
- low power consumption cost (output value can be at any given rate either
- by CPU or DMA).
-
- The Sample and hold block and registers uses either LSI & run in
- several power modes: run mode, sleep mode, low power run, low power sleep
- mode & stop1 mode.
-
- Low power stop1 mode allows only static conversion.
-
- To enable Sample and Hold mode
- Enable LSI using HAL_RCC_OscConfig with RCC_OSCILLATORTYPE_LSI &
- RCC_LSI_ON parameters.
-
- Use DAC_InitStructure.DAC_SampleAndHold = DAC_SAMPLEANDHOLD_ENABLE;
- & DAC_ChannelConfTypeDef.DAC_SampleAndHoldConfig.DAC_SampleTime,
- DAC_HoldTime & DAC_RefreshTime;
-
-
-
- *** DAC calibration feature ***
- ===================================
- [..]
- (#) The 2 converters (channel1 & channel2) provide calibration capabilities.
- (++) Calibration aims at correcting some offset of output buffer.
- (++) The DAC uses either factory calibration settings OR user defined
- calibration (trimming) settings (i.e. trimming mode).
- (++) The user defined settings can be figured out using self calibration
- handled by HAL_DACEx_SelfCalibrate.
- (++) HAL_DACEx_SelfCalibrate:
- (+++) Runs automatically the calibration.
- (+++) Enables the user trimming mode
- (+++) Updates a structure with trimming values with fresh calibration
- results.
- The user may store the calibration results for larger
- (ex monitoring the trimming as a function of temperature
- for instance)
-
- *** DAC wave generation feature ***
- ===================================
- [..]
- Both DAC channels can be used to generate
- (#) Noise wave
- (#) Triangle wave
-
- *** 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().
- DMA requests are mapped as following:
- (#) DAC channel1: mapped either on
- (++) DMA1 request 6 channel3
- (++) or DMA2 request channel4 which must be already configured
- (#) DAC channel2: mapped either on
- (++) DMA1 request 5 channel4
- (++) or DMA2 request 3 channel5 which must be already configured
- [..]
- (@) For Dual mode and specific signal (Triangle and noise) generation please
- refer to Extended 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.
-
- *** Calibration mode IO operation ***
- ======================================
- [..]
- (+) Retrieve the factory trimming (calibration settings) using HAL_DACEx_GetTrimOffset()
- (+) Run the calibration using HAL_DACEx_SelfCalibrate()
- (+) Update the trimming while DAC running using HAL_DACEx_SetUserTrimming()
-
- *** 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 middle of data transfer HAL_DAC_ConvHalfCpltCallbackCh1() or HAL_DACEx_ConvHalfCpltCallbackCh2()
- function is executed and user can add his own code by customization of function pointer
- HAL_DAC_ConvHalfCpltCallbackCh1() or HAL_DACEx_ConvHalfCpltCallbackCh2()
- (+) At The end of data transfer HAL_DAC_ConvCpltCallbackCh1() or HAL_DACEx_ConvHalfCpltCallbackCh2()
- function is executed and user can add his own code by customization of function pointer
- HAL_DAC_ConvCpltCallbackCh1() or HAL_DACEx_ConvHalfCpltCallbackCh2()
- (+) 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
- (+) In case of DMA underrun, DAC interruption triggers and execute internal function HAL_DAC_IRQHandler.
- HAL_DAC_DMAUnderrunCallbackCh1() or HAL_DACEx_DMAUnderrunCallbackCh2()
- function is executed and user can add his own code by customization of function pointer
- HAL_DAC_DMAUnderrunCallbackCh1() or HAL_DACEx_DMAUnderrunCallbackCh2() and
- 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 "stm32l4xx_hal.h"
-
-/** @addtogroup STM32L4xx_HAL_Driver
- * @{
- */
-
- /** @defgroup DAC DAC
- * @brief DAC driver modules
- * @{
- */
-
-#ifdef HAL_DAC_MODULE_ENABLED
-
-/* Private typedef -----------------------------------------------------------*/
-/* Private define ------------------------------------------------------------*/
-/* Private constants ---------------------------------------------------------*/
-/** @addtogroup DAC_Private_Constants DAC Private Constants
- * @{
- */
-#define TIMEOUT_DAC_CALIBCONFIG ((uint32_t)1) /* 1ms */
-/**
- * @}
- */
-
-/* Private macro -------------------------------------------------------------*/
-/* Private macro -------------------------------------------------------------*/
-/* Private variables ---------------------------------------------------------*/
-/* Private function prototypes -----------------------------------------------*/
-/** @defgroup DAC_Private_Functions DAC Private Functions
- * @{
- */
-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 Initialize the DAC peripheral according to the specified parameters
- * in the DAC_InitStruct and initialize the associated handle.
- * @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 Deinitialize 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 Initialize the DAC MSP.
- * @param hdac: pointer to a DAC_HandleTypeDef structure that contains
- * the configuration information for the specified DAC.
- * @retval None
- */
-__weak void HAL_DAC_MspInit(DAC_HandleTypeDef* hdac)
-{
- /* NOTE : This function should not be modified, when the callback is needed,
- the HAL_DAC_MspInit could be implemented in the user file
- */
-}
-
-/**
- * @brief DeInitialize the DAC MSP.
- * @param hdac: pointer to a DAC_HandleTypeDef structure that contains
- * the configuration information for the specified DAC.
- * @retval None
- */
-__weak void HAL_DAC_MspDeInit(DAC_HandleTypeDef* hdac)
-{
- /* NOTE : This function should not be modified, when the callback is needed,
- the HAL_DAC_MspDeInit could be implemented in the user file
- */
-}
-
-/**
- * @}
- */
-
-/** @defgroup DAC_Exported_Functions_Group2 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)
-{
- /* 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)
- {
- /* Check if software trigger enabled */
- if((hdac->Instance->CR & (DAC_CR_TEN1 | DAC_CR_TSEL1)) == (DAC_CR_TEN1 | DAC_CR_TSEL1))
- {
- /* Enable the selected DAC software conversion */
- SET_BIT(hdac->Instance->SWTRIGR, DAC_SWTRIGR_SWTRIG1);
- }
- }
- else
- {
- /* Check if software trigger enabled */
- if((hdac->Instance->CR & (DAC_CR_TEN2 | DAC_CR_TSEL2)) == (DAC_CR_TEN2 | DAC_CR_TSEL2))
- {
- /* Enable the selected DAC software conversion*/
- SET_BIT(hdac->Instance->SWTRIGR, 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 */
- SET_BIT(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 */
- SET_BIT(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 channel */
- if(Channel == DAC_CHANNEL_1)
- {
- /* Enable the DAC DMA underrun interrupt */
- __HAL_DAC_ENABLE_IT(hdac, DAC_IT_DMAUDR1);
-
- /* Enable the DMA channel */
- 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 channel */
- HAL_DMA_Start_IT(hdac->DMA_Handle2, (uint32_t)pData, tmpreg, Length);
- }
-
- /* Process Unlocked */
- __HAL_UNLOCK(hdac);
-
- /* Enable the Peripheral */
- __HAL_DAC_ENABLE(hdac, Channel);
-
- /* 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)
- {
- /* Disable the DMA channel */
- status = HAL_DMA_Abort(hdac->DMA_Handle1);
-
- /* Disable the DAC DMA underrun interrupt */
- __HAL_DAC_DISABLE_IT(hdac, DAC_IT_DMAUDR1);
- }
- else /* Channel2 is used for */
- {
- /* Disable the DMA channel */
- status = HAL_DMA_Abort(hdac->DMA_Handle2);
-
- /* Disable the DAC DMA underrun interrupt */
- __HAL_DAC_DISABLE_IT(hdac, DAC_IT_DMAUDR2);
- }
-
- /* 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;
-}
-
-/* DAC channel 2 is available on top of DAC channel 1 */
-
-/**
- * @brief Handles DAC interrupt request
- * This function uses the interruption of DMA
- * underrun.
- * @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)
-{
- if(__HAL_DAC_GET_IT_SOURCE(hdac, DAC_IT_DMAUDR1))
- {
- /* Check underrun flag of DAC channel 1 */
- 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 chanel1 DMA underrun error */
- SET_BIT(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 */
- CLEAR_BIT(hdac->Instance->CR, DAC_CR_DMAEN1);
-
- /* Error callback */
- HAL_DAC_DMAUnderrunCallbackCh1(hdac);
- }
- }
- if(__HAL_DAC_GET_IT_SOURCE(hdac, DAC_IT_DMAUDR2))
- {
- /* Check underrun flag of DAC channel 1 */
- 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 */
- SET_BIT(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 */
- CLEAR_BIT(hdac->Instance->CR, DAC_CR_DMAEN2);
-
- /* Error callback */
- HAL_DACEx_DMAUnderrunCallbackCh2(hdac);
- }
- }
-}
-
-/**
- * @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 channel selected data holding register */
- *(__IO uint32_t *) tmp = Data;
-
- /* Return function status */
- return HAL_OK;
-}
-
-/**
- * @brief Conversion complete callback in non-blocking mode for Channel1
- * @param hdac: pointer to a DAC_HandleTypeDef structure that contains
- * the configuration information for the specified DAC.
- * @retval None
- */
-__weak void HAL_DAC_ConvCpltCallbackCh1(DAC_HandleTypeDef* hdac)
-{
- /* NOTE : This function should not be modified, when the callback is needed,
- the HAL_DAC_ConvCpltCallbackCh1 could be implemented in the user file
- */
-}
-
-/**
- * @brief Conversion half DMA transfer callback in non-blocking mode for Channel1
- * @param hdac: pointer to a DAC_HandleTypeDef structure that contains
- * the configuration information for the specified DAC.
- * @retval None
- */
-__weak void HAL_DAC_ConvHalfCpltCallbackCh1(DAC_HandleTypeDef* hdac)
-{
- /* NOTE : This function should not be modified, when the callback is needed,
- the HAL_DAC_ConvHalfCpltCallbackCh1 could be implemented in the user file
- */
-}
-
-/**
- * @brief Error DAC callback for Channel1.
- * @param hdac: pointer to a DAC_HandleTypeDef structure that contains
- * the configuration information for the specified DAC.
- * @retval None
- */
-__weak void HAL_DAC_ErrorCallbackCh1(DAC_HandleTypeDef *hdac)
-{
- /* NOTE : This function should not be modified, when the callback is needed,
- the HAL_DAC_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)
-{
- /* 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 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 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;
- uint32_t tickstart = 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_CHIP_CONNECTION(sConfig->DAC_ConnectOnChipPeripheral));
- assert_param(IS_DAC_TRIMMING(sConfig->DAC_UserTrimming));
- if ((sConfig->DAC_UserTrimming) == DAC_TRIMMING_USER)
- {
- assert_param(IS_DAC_TRIMMINGVALUE(sConfig->DAC_TrimmingValue));
- }
- assert_param(IS_DAC_SAMPLEANDHOLD(sConfig->DAC_SampleAndHold));
- if ((sConfig->DAC_SampleAndHold) == DAC_SAMPLEANDHOLD_ENABLE)
- {
- assert_param(IS_DAC_SAMPLETIME(sConfig->DAC_SampleAndHoldConfig.DAC_SampleTime));
- assert_param(IS_DAC_HOLDTIME(sConfig->DAC_SampleAndHoldConfig.DAC_HoldTime));
- assert_param(IS_DAC_REFRESHTIME(sConfig->DAC_SampleAndHoldConfig.DAC_RefreshTime));
- }
- assert_param(IS_DAC_CHANNEL(Channel));
-
- /* Process locked */
- __HAL_LOCK(hdac);
-
- /* Change DAC state */
- hdac->State = HAL_DAC_STATE_BUSY;
-
- if(sConfig->DAC_SampleAndHold == DAC_SAMPLEANDHOLD_ENABLE)
- /* Sample on old configuration */
- {
- /* SampleTime */
- if (Channel == DAC_CHANNEL_1)
- {
- /* Get timeout */
- tickstart = HAL_GetTick();
-
- /* SHSR1 can be written when BWST1 equals RESET */
- while (((hdac->Instance->SR) & DAC_SR_BWST1)!= RESET)
- {
- /* Check for the Timeout */
- if((HAL_GetTick() - tickstart) > TIMEOUT_DAC_CALIBCONFIG)
- {
- /* Update error code */
- SET_BIT(hdac->ErrorCode, HAL_DAC_ERROR_TIMEOUT);
-
- /* Change the DMA state */
- hdac->State = HAL_DAC_STATE_TIMEOUT;
-
- return HAL_TIMEOUT;
- }
- }
- HAL_Delay(1);
- hdac->Instance->SHSR1 = sConfig->DAC_SampleAndHoldConfig.DAC_SampleTime;
- }
- else /* Channel 2 */
- {
- /* SHSR2 can be written when BWST2 equals RESET */
-
- while (((hdac->Instance->SR) & DAC_SR_BWST2)!= RESET)
- {
- /* Check for the Timeout */
- if((HAL_GetTick() - tickstart) > TIMEOUT_DAC_CALIBCONFIG)
- {
- /* Update error code */
- SET_BIT(hdac->ErrorCode, HAL_DAC_ERROR_TIMEOUT);
-
- /* Change the DMA state */
- hdac->State = HAL_DAC_STATE_TIMEOUT;
-
- return HAL_TIMEOUT;
- }
- }
- HAL_Delay(1);
- hdac->Instance->SHSR2 = sConfig->DAC_SampleAndHoldConfig.DAC_SampleTime;
- }
- /* HoldTime */
- hdac->Instance->SHHR = (sConfig->DAC_SampleAndHoldConfig.DAC_HoldTime)<<Channel;
- /* RefreshTime */
- hdac->Instance->SHRR = (sConfig->DAC_SampleAndHoldConfig.DAC_RefreshTime)<<Channel;
- }
-
- if(sConfig->DAC_UserTrimming == DAC_TRIMMING_USER)
- /* USER TRIMMING */
- {
- /* Get the DAC CCR value */
- tmpreg1 = hdac->Instance->CCR;
- /* Clear trimming value */
- tmpreg1 &= ~(((uint32_t)(DAC_CCR_OTRIM1)) << Channel);
- /* Configure for the selected trimming offset */
- tmpreg2 = sConfig->DAC_TrimmingValue;
- /* Calculate CCR register value depending on DAC_Channel */
- tmpreg1 |= tmpreg2 << Channel;
- /* Write to DAC CCR */
- hdac->Instance->CCR = tmpreg1;
- }
- /* else factory trimming is used (factory setting are available at reset)*/
- /* SW Nothing has nothing to do */
-
- /* Get the DAC MCR value */
- tmpreg1 = hdac->Instance->MCR;
- /* Clear DAC_MCR_MODE2_0, DAC_MCR_MODE2_1 and DAC_MCR_MODE2_2 bits */
- tmpreg1 &= ~(((uint32_t)(DAC_MCR_MODE1)) << Channel);
- /* Configure for the selected DAC channel: mode, buffer output & on chip peripheral connect */
- tmpreg2 = (sConfig->DAC_SampleAndHold | sConfig->DAC_OutputBuffer | sConfig->DAC_ConnectOnChipPeripheral);
- /* Calculate MCR register value depending on DAC_Channel */
- tmpreg1 |= tmpreg2 << Channel;
- /* Write to DAC MCR */
- hdac->Instance->MCR = tmpreg1;
-
- /* DAC in normal operating mode hence clear DAC_CR_CENx bit */
- CLEAR_BIT (hdac->Instance->CR, DAC_CR_CEN1 << Channel);
-
- /* Get the DAC CR value */
- tmpreg1 = hdac->Instance->CR;
- /* Clear TENx, TSELx, WAVEx and MAMPx bits */
- tmpreg1 &= ~(((uint32_t)(DAC_CR_MAMP1 | DAC_CR_WAVE1 | DAC_CR_TSEL1 | DAC_CR_TEN1)) << Channel);
- /* Configure for the selected DAC channel: trigger */
- /* Set TSELx and TENx bits according to DAC_Trigger value */
- tmpreg2 = (sConfig->DAC_Trigger);
- /* 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;
-}
-
-/**
- * @}
- */
-
-/** @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 handle 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 handle state */
- return hdac->State;
-}
-
-
-/**
- * @brief Return the DAC error code
- * @param hdac: pointer to a DAC_HandleTypeDef structure that contains
- * the configuration information for the specified DAC.
- * @retval DAC Error Code
- */
-uint32_t HAL_DAC_GetError(DAC_HandleTypeDef *hdac)
-{
- return hdac->ErrorCode;
-}
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/** @addtogroup DAC_Private_Functions
- * @{
- */
-
-/**
- * @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****/
-