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Diffstat (limited to 'stmhal/hal/l4/src/stm32l4xx_hal_dac.c')
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diff --git a/stmhal/hal/l4/src/stm32l4xx_hal_dac.c b/stmhal/hal/l4/src/stm32l4xx_hal_dac.c new file mode 100644 index 000000000..d797a232c --- /dev/null +++ b/stmhal/hal/l4/src/stm32l4xx_hal_dac.c @@ -0,0 +1,1183 @@ +/** + ****************************************************************************** + * @file stm32l4xx_hal_dac.c + * @author MCD Application Team + * @version V1.3.0 + * @date 29-January-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 *** + ==================== + [..] + 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) 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 "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) +{ + /* 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 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) +{ + /* 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) +{ + /* 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) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(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) +{ + /* 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 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****/ |