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Diffstat (limited to 'stm/lib/stm32f4xx_dac.c')
| -rw-r--r-- | stm/lib/stm32f4xx_dac.c | 714 |
1 files changed, 0 insertions, 714 deletions
diff --git a/stm/lib/stm32f4xx_dac.c b/stm/lib/stm32f4xx_dac.c deleted file mode 100644 index daff78d883..0000000000 --- a/stm/lib/stm32f4xx_dac.c +++ /dev/null @@ -1,714 +0,0 @@ -/**
- ******************************************************************************
- * @file stm32f4xx_dac.c
- * @author MCD Application Team
- * @version V1.3.0
- * @date 08-November-2013
- * @brief This file provides firmware functions to manage the following
- * functionalities of the Digital-to-Analog Converter (DAC) peripheral:
- * + DAC channels configuration: trigger, output buffer, data format
- * + DMA management
- * + Interrupts and flags management
- *
- @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
- using DAC_SetChannel1Data() / DAC_SetChannel2Data() functions.
- [..]
- 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...)
- The timer TRGO event should be selected using TIM_SelectOutputTrigger()
-
- (#) 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
- DAC_InitStructure.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 DAC_WaveGeneration_Noise
- (#) Triangle wave using DAC_WaveGeneration_Triangle
-
- -@- Wave generation can be disabled using DAC_WaveGeneration_None
-
- *** 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
- DAC_SetChannel1Data(DAC_Align_12b_R, 868);
- 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
- DAC_DMACmd()
- [..]
- 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
-
-
- ##### How to use this driver #####
- ===============================================================================
- [..]
- (+) DAC APB clock must be enabled to get write access to DAC
- registers using
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE)
- (+) Configure DAC_OUTx (DAC_OUT1: PA4, DAC_OUT2: PA5) in analog mode.
- (+) Configure the DAC channel using DAC_Init() function
- (+) Enable the DAC channel using DAC_Cmd() function
-
- @endverbatim
- ******************************************************************************
- * @attention
- *
- * <h2><center>© COPYRIGHT 2013 STMicroelectronics</center></h2>
- *
- * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
- * You may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.st.com/software_license_agreement_liberty_v2
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- ******************************************************************************
- */
-
-
-/* Includes ------------------------------------------------------------------*/
-#include "stm32f4xx_dac.h"
-#include "stm32f4xx_rcc.h"
-
-/** @addtogroup STM32F4xx_StdPeriph_Driver
- * @{
- */
-
-/** @defgroup DAC
- * @brief DAC driver modules
- * @{
- */
-
-/* Private typedef -----------------------------------------------------------*/
-/* Private define ------------------------------------------------------------*/
-
-/* CR register Mask */
-#define CR_CLEAR_MASK ((uint32_t)0x00000FFE)
-
-/* DAC Dual Channels SWTRIG masks */
-#define DUAL_SWTRIG_SET ((uint32_t)0x00000003)
-#define DUAL_SWTRIG_RESET ((uint32_t)0xFFFFFFFC)
-
-/* DHR registers offsets */
-#define DHR12R1_OFFSET ((uint32_t)0x00000008)
-#define DHR12R2_OFFSET ((uint32_t)0x00000014)
-#define DHR12RD_OFFSET ((uint32_t)0x00000020)
-
-/* DOR register offset */
-#define DOR_OFFSET ((uint32_t)0x0000002C)
-
-/* Private macro -------------------------------------------------------------*/
-/* Private variables ---------------------------------------------------------*/
-/* Private function prototypes -----------------------------------------------*/
-/* Private functions ---------------------------------------------------------*/
-
-/** @defgroup DAC_Private_Functions
- * @{
- */
-
-/** @defgroup DAC_Group1 DAC channels configuration
- * @brief DAC channels configuration: trigger, output buffer, data format
- *
-@verbatim
- ===============================================================================
- ##### DAC channels configuration: trigger, output buffer, data format #####
- ===============================================================================
-
-@endverbatim
- * @{
- */
-
-/**
- * @brief Deinitializes the DAC peripheral registers to their default reset values.
- * @param None
- * @retval None
- */
-void DAC_DeInit(void)
-{
- /* Enable DAC reset state */
- RCC_APB1PeriphResetCmd(RCC_APB1Periph_DAC, ENABLE);
- /* Release DAC from reset state */
- RCC_APB1PeriphResetCmd(RCC_APB1Periph_DAC, DISABLE);
-}
-
-/**
- * @brief Initializes the DAC peripheral according to the specified parameters
- * in the DAC_InitStruct.
- * @param DAC_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 DAC_InitStruct: pointer to a DAC_InitTypeDef structure that contains
- * the configuration information for the specified DAC channel.
- * @retval None
- */
-void DAC_Init(uint32_t DAC_Channel, DAC_InitTypeDef* DAC_InitStruct)
-{
- uint32_t tmpreg1 = 0, tmpreg2 = 0;
-
- /* Check the DAC parameters */
- assert_param(IS_DAC_TRIGGER(DAC_InitStruct->DAC_Trigger));
- assert_param(IS_DAC_GENERATE_WAVE(DAC_InitStruct->DAC_WaveGeneration));
- assert_param(IS_DAC_LFSR_UNMASK_TRIANGLE_AMPLITUDE(DAC_InitStruct->DAC_LFSRUnmask_TriangleAmplitude));
- assert_param(IS_DAC_OUTPUT_BUFFER_STATE(DAC_InitStruct->DAC_OutputBuffer));
-
-/*---------------------------- DAC CR Configuration --------------------------*/
- /* Get the DAC CR value */
- tmpreg1 = DAC->CR;
- /* Clear BOFFx, TENx, TSELx, WAVEx and MAMPx bits */
- tmpreg1 &= ~(CR_CLEAR_MASK << DAC_Channel);
- /* Configure for the selected DAC channel: buffer output, trigger,
- wave generation, mask/amplitude for wave generation */
- /* Set TSELx and TENx bits according to DAC_Trigger value */
- /* Set WAVEx bits according to DAC_WaveGeneration value */
- /* Set MAMPx bits according to DAC_LFSRUnmask_TriangleAmplitude value */
- /* Set BOFFx bit according to DAC_OutputBuffer value */
- tmpreg2 = (DAC_InitStruct->DAC_Trigger | DAC_InitStruct->DAC_WaveGeneration |
- DAC_InitStruct->DAC_LFSRUnmask_TriangleAmplitude | \
- DAC_InitStruct->DAC_OutputBuffer);
- /* Calculate CR register value depending on DAC_Channel */
- tmpreg1 |= tmpreg2 << DAC_Channel;
- /* Write to DAC CR */
- DAC->CR = tmpreg1;
-}
-
-/**
- * @brief Fills each DAC_InitStruct member with its default value.
- * @param DAC_InitStruct: pointer to a DAC_InitTypeDef structure which will
- * be initialized.
- * @retval None
- */
-void DAC_StructInit(DAC_InitTypeDef* DAC_InitStruct)
-{
-/*--------------- Reset DAC init structure parameters values -----------------*/
- /* Initialize the DAC_Trigger member */
- DAC_InitStruct->DAC_Trigger = DAC_Trigger_None;
- /* Initialize the DAC_WaveGeneration member */
- DAC_InitStruct->DAC_WaveGeneration = DAC_WaveGeneration_None;
- /* Initialize the DAC_LFSRUnmask_TriangleAmplitude member */
- DAC_InitStruct->DAC_LFSRUnmask_TriangleAmplitude = DAC_LFSRUnmask_Bit0;
- /* Initialize the DAC_OutputBuffer member */
- DAC_InitStruct->DAC_OutputBuffer = DAC_OutputBuffer_Enable;
-}
-
-/**
- * @brief Enables or disables the specified DAC channel.
- * @param DAC_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 NewState: new state of the DAC channel.
- * This parameter can be: ENABLE or DISABLE.
- * @note When the DAC channel is enabled the trigger source can no more be modified.
- * @retval None
- */
-void DAC_Cmd(uint32_t DAC_Channel, FunctionalState NewState)
-{
- /* Check the parameters */
- assert_param(IS_DAC_CHANNEL(DAC_Channel));
- assert_param(IS_FUNCTIONAL_STATE(NewState));
-
- if (NewState != DISABLE)
- {
- /* Enable the selected DAC channel */
- DAC->CR |= (DAC_CR_EN1 << DAC_Channel);
- }
- else
- {
- /* Disable the selected DAC channel */
- DAC->CR &= (~(DAC_CR_EN1 << DAC_Channel));
- }
-}
-
-/**
- * @brief Enables or disables the selected DAC channel software trigger.
- * @param DAC_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 NewState: new state of the selected DAC channel software trigger.
- * This parameter can be: ENABLE or DISABLE.
- * @retval None
- */
-void DAC_SoftwareTriggerCmd(uint32_t DAC_Channel, FunctionalState NewState)
-{
- /* Check the parameters */
- assert_param(IS_DAC_CHANNEL(DAC_Channel));
- assert_param(IS_FUNCTIONAL_STATE(NewState));
-
- if (NewState != DISABLE)
- {
- /* Enable software trigger for the selected DAC channel */
- DAC->SWTRIGR |= (uint32_t)DAC_SWTRIGR_SWTRIG1 << (DAC_Channel >> 4);
- }
- else
- {
- /* Disable software trigger for the selected DAC channel */
- DAC->SWTRIGR &= ~((uint32_t)DAC_SWTRIGR_SWTRIG1 << (DAC_Channel >> 4));
- }
-}
-
-/**
- * @brief Enables or disables simultaneously the two DAC channels software triggers.
- * @param NewState: new state of the DAC channels software triggers.
- * This parameter can be: ENABLE or DISABLE.
- * @retval None
- */
-void DAC_DualSoftwareTriggerCmd(FunctionalState NewState)
-{
- /* Check the parameters */
- assert_param(IS_FUNCTIONAL_STATE(NewState));
-
- if (NewState != DISABLE)
- {
- /* Enable software trigger for both DAC channels */
- DAC->SWTRIGR |= DUAL_SWTRIG_SET;
- }
- else
- {
- /* Disable software trigger for both DAC channels */
- DAC->SWTRIGR &= DUAL_SWTRIG_RESET;
- }
-}
-
-/**
- * @brief Enables or disables the selected DAC channel wave generation.
- * @param DAC_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 DAC_Wave: specifies the wave type to enable or disable.
- * This parameter can be one of the following values:
- * @arg DAC_Wave_Noise: noise wave generation
- * @arg DAC_Wave_Triangle: triangle wave generation
- * @param NewState: new state of the selected DAC channel wave generation.
- * This parameter can be: ENABLE or DISABLE.
- * @retval None
- */
-void DAC_WaveGenerationCmd(uint32_t DAC_Channel, uint32_t DAC_Wave, FunctionalState NewState)
-{
- /* Check the parameters */
- assert_param(IS_DAC_CHANNEL(DAC_Channel));
- assert_param(IS_DAC_WAVE(DAC_Wave));
- assert_param(IS_FUNCTIONAL_STATE(NewState));
-
- if (NewState != DISABLE)
- {
- /* Enable the selected wave generation for the selected DAC channel */
- DAC->CR |= DAC_Wave << DAC_Channel;
- }
- else
- {
- /* Disable the selected wave generation for the selected DAC channel */
- DAC->CR &= ~(DAC_Wave << DAC_Channel);
- }
-}
-
-/**
- * @brief Set the specified data holding register value for DAC channel1.
- * @param DAC_Align: Specifies the data alignment for DAC channel1.
- * 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 None
- */
-void DAC_SetChannel1Data(uint32_t DAC_Align, uint16_t Data)
-{
- __IO uint32_t tmp = 0;
-
- /* Check the parameters */
- assert_param(IS_DAC_ALIGN(DAC_Align));
- assert_param(IS_DAC_DATA(Data));
-
- tmp = (uint32_t)DAC_BASE;
- tmp += DHR12R1_OFFSET + DAC_Align;
-
- /* Set the DAC channel1 selected data holding register */
- *(__IO uint32_t *) tmp = Data;
-}
-
-/**
- * @brief Set the specified data holding register value for DAC channel2.
- * @param DAC_Align: Specifies the data alignment for DAC channel2.
- * 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 None
- */
-void DAC_SetChannel2Data(uint32_t DAC_Align, uint16_t Data)
-{
- __IO uint32_t tmp = 0;
-
- /* Check the parameters */
- assert_param(IS_DAC_ALIGN(DAC_Align));
- assert_param(IS_DAC_DATA(Data));
-
- tmp = (uint32_t)DAC_BASE;
- tmp += DHR12R2_OFFSET + DAC_Align;
-
- /* Set the DAC channel2 selected data holding register */
- *(__IO uint32_t *)tmp = Data;
-}
-
-/**
- * @brief Set the specified data holding register value for dual channel DAC.
- * @param DAC_Align: Specifies the data alignment for dual channel DAC.
- * 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 Data2: Data for DAC Channel2 to be loaded in the selected data holding register.
- * @param Data1: Data for DAC Channel1 to be loaded in the selected data holding register.
- * @note In dual mode, a unique register access is required to write in both
- * DAC channels at the same time.
- * @retval None
- */
-void DAC_SetDualChannelData(uint32_t DAC_Align, uint16_t Data2, uint16_t Data1)
-{
- uint32_t data = 0, tmp = 0;
-
- /* Check the parameters */
- assert_param(IS_DAC_ALIGN(DAC_Align));
- assert_param(IS_DAC_DATA(Data1));
- assert_param(IS_DAC_DATA(Data2));
-
- /* Calculate and set dual DAC data holding register value */
- if (DAC_Align == DAC_Align_8b_R)
- {
- data = ((uint32_t)Data2 << 8) | Data1;
- }
- else
- {
- data = ((uint32_t)Data2 << 16) | Data1;
- }
-
- tmp = (uint32_t)DAC_BASE;
- tmp += DHR12RD_OFFSET + DAC_Align;
-
- /* Set the dual DAC selected data holding register */
- *(__IO uint32_t *)tmp = data;
-}
-
-/**
- * @brief Returns the last data output value of the selected DAC channel.
- * @param DAC_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.
- */
-uint16_t DAC_GetDataOutputValue(uint32_t DAC_Channel)
-{
- __IO uint32_t tmp = 0;
-
- /* Check the parameters */
- assert_param(IS_DAC_CHANNEL(DAC_Channel));
-
- tmp = (uint32_t) DAC_BASE ;
- tmp += DOR_OFFSET + ((uint32_t)DAC_Channel >> 2);
-
- /* Returns the DAC channel data output register value */
- return (uint16_t) (*(__IO uint32_t*) tmp);
-}
-/**
- * @}
- */
-
-/** @defgroup DAC_Group2 DMA management functions
- * @brief DMA management functions
- *
-@verbatim
- ===============================================================================
- ##### DMA management functions #####
- ===============================================================================
-
-@endverbatim
- * @{
- */
-
-/**
- * @brief Enables or disables the specified DAC channel DMA request.
- * @note When enabled DMA1 is generated when an external trigger (EXTI Line9,
- * TIM2, TIM4, TIM5, TIM6, TIM7 or TIM8 but not a software trigger) occurs.
- * @param DAC_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 NewState: new state of the selected DAC channel DMA request.
- * This parameter can be: ENABLE or DISABLE.
- * @note The DAC channel1 is mapped on DMA1 Stream 5 channel7 which must be
- * already configured.
- * @note The DAC channel2 is mapped on DMA1 Stream 6 channel7 which must be
- * already configured.
- * @retval None
- */
-void DAC_DMACmd(uint32_t DAC_Channel, FunctionalState NewState)
-{
- /* Check the parameters */
- assert_param(IS_DAC_CHANNEL(DAC_Channel));
- assert_param(IS_FUNCTIONAL_STATE(NewState));
-
- if (NewState != DISABLE)
- {
- /* Enable the selected DAC channel DMA request */
- DAC->CR |= (DAC_CR_DMAEN1 << DAC_Channel);
- }
- else
- {
- /* Disable the selected DAC channel DMA request */
- DAC->CR &= (~(DAC_CR_DMAEN1 << DAC_Channel));
- }
-}
-/**
- * @}
- */
-
-/** @defgroup DAC_Group3 Interrupts and flags management functions
- * @brief Interrupts and flags management functions
- *
-@verbatim
- ===============================================================================
- ##### Interrupts and flags management functions #####
- ===============================================================================
-
-@endverbatim
- * @{
- */
-
-/**
- * @brief Enables or disables the specified DAC interrupts.
- * @param DAC_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 DAC_IT: specifies the DAC interrupt sources to be enabled or disabled.
- * This parameter can be the following values:
- * @arg DAC_IT_DMAUDR: DMA underrun interrupt mask
- * @note The DMA underrun occurs when a second external trigger arrives before the
- * acknowledgement for the first external trigger is received (first request).
- * @param NewState: new state of the specified DAC interrupts.
- * This parameter can be: ENABLE or DISABLE.
- * @retval None
- */
-void DAC_ITConfig(uint32_t DAC_Channel, uint32_t DAC_IT, FunctionalState NewState)
-{
- /* Check the parameters */
- assert_param(IS_DAC_CHANNEL(DAC_Channel));
- assert_param(IS_FUNCTIONAL_STATE(NewState));
- assert_param(IS_DAC_IT(DAC_IT));
-
- if (NewState != DISABLE)
- {
- /* Enable the selected DAC interrupts */
- DAC->CR |= (DAC_IT << DAC_Channel);
- }
- else
- {
- /* Disable the selected DAC interrupts */
- DAC->CR &= (~(uint32_t)(DAC_IT << DAC_Channel));
- }
-}
-
-/**
- * @brief Checks whether the specified DAC flag is set or not.
- * @param DAC_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 DAC_FLAG: specifies the flag to check.
- * This parameter can be only of the following value:
- * @arg DAC_FLAG_DMAUDR: DMA underrun flag
- * @note The DMA underrun occurs when a second external trigger arrives before the
- * acknowledgement for the first external trigger is received (first request).
- * @retval The new state of DAC_FLAG (SET or RESET).
- */
-FlagStatus DAC_GetFlagStatus(uint32_t DAC_Channel, uint32_t DAC_FLAG)
-{
- FlagStatus bitstatus = RESET;
- /* Check the parameters */
- assert_param(IS_DAC_CHANNEL(DAC_Channel));
- assert_param(IS_DAC_FLAG(DAC_FLAG));
-
- /* Check the status of the specified DAC flag */
- if ((DAC->SR & (DAC_FLAG << DAC_Channel)) != (uint8_t)RESET)
- {
- /* DAC_FLAG is set */
- bitstatus = SET;
- }
- else
- {
- /* DAC_FLAG is reset */
- bitstatus = RESET;
- }
- /* Return the DAC_FLAG status */
- return bitstatus;
-}
-
-/**
- * @brief Clears the DAC channel's pending flags.
- * @param DAC_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 DAC_FLAG: specifies the flag to clear.
- * This parameter can be of the following value:
- * @arg DAC_FLAG_DMAUDR: DMA underrun flag
- * @note The DMA underrun occurs when a second external trigger arrives before the
- * acknowledgement for the first external trigger is received (first request).
- * @retval None
- */
-void DAC_ClearFlag(uint32_t DAC_Channel, uint32_t DAC_FLAG)
-{
- /* Check the parameters */
- assert_param(IS_DAC_CHANNEL(DAC_Channel));
- assert_param(IS_DAC_FLAG(DAC_FLAG));
-
- /* Clear the selected DAC flags */
- DAC->SR = (DAC_FLAG << DAC_Channel);
-}
-
-/**
- * @brief Checks whether the specified DAC interrupt has occurred or not.
- * @param DAC_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 DAC_IT: specifies the DAC interrupt source to check.
- * This parameter can be the following values:
- * @arg DAC_IT_DMAUDR: DMA underrun interrupt mask
- * @note The DMA underrun occurs when a second external trigger arrives before the
- * acknowledgement for the first external trigger is received (first request).
- * @retval The new state of DAC_IT (SET or RESET).
- */
-ITStatus DAC_GetITStatus(uint32_t DAC_Channel, uint32_t DAC_IT)
-{
- ITStatus bitstatus = RESET;
- uint32_t enablestatus = 0;
-
- /* Check the parameters */
- assert_param(IS_DAC_CHANNEL(DAC_Channel));
- assert_param(IS_DAC_IT(DAC_IT));
-
- /* Get the DAC_IT enable bit status */
- enablestatus = (DAC->CR & (DAC_IT << DAC_Channel)) ;
-
- /* Check the status of the specified DAC interrupt */
- if (((DAC->SR & (DAC_IT << DAC_Channel)) != (uint32_t)RESET) && enablestatus)
- {
- /* DAC_IT is set */
- bitstatus = SET;
- }
- else
- {
- /* DAC_IT is reset */
- bitstatus = RESET;
- }
- /* Return the DAC_IT status */
- return bitstatus;
-}
-
-/**
- * @brief Clears the DAC channel's interrupt pending bits.
- * @param DAC_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 DAC_IT: specifies the DAC interrupt pending bit to clear.
- * This parameter can be the following values:
- * @arg DAC_IT_DMAUDR: DMA underrun interrupt mask
- * @note The DMA underrun occurs when a second external trigger arrives before the
- * acknowledgement for the first external trigger is received (first request).
- * @retval None
- */
-void DAC_ClearITPendingBit(uint32_t DAC_Channel, uint32_t DAC_IT)
-{
- /* Check the parameters */
- assert_param(IS_DAC_CHANNEL(DAC_Channel));
- assert_param(IS_DAC_IT(DAC_IT));
-
- /* Clear the selected DAC interrupt pending bits */
- DAC->SR = (DAC_IT << DAC_Channel);
-}
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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