test / mbed-src

mbed library sources

Dependents:   bare

Fork of mbed-src by mbed official

targets/cmsis/TARGET_STM/TARGET_NUCLEO_F030R8/stm32f0xx_dac.c@76:aeb1df146756, 2014-01-27 (annotated)

Committer:
mbed_official
Date:
Mon Jan 27 14:30:07 2014 +0000
Revision:
76:aeb1df146756
Child:
106:ced8cbb51063
Synchronized with git revision a31ec9c5f7bcb5c8a1b2eced103f6a1dfa921abd



Full URL: https://github.com/mbedmicro/mbed/commit/a31ec9c5f7bcb5c8a1b2eced103f6a1dfa921abd/



Add NUCLEO_L152RE

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 76:aeb1df146756 1 /**
mbed_official 76:aeb1df146756 2 ******************************************************************************
mbed_official 76:aeb1df146756 3 * @file stm32f0xx_dac.c
mbed_official 76:aeb1df146756 4 * @author MCD Application Team
mbed_official 76:aeb1df146756 5 * @version V1.3.0
mbed_official 76:aeb1df146756 6 * @date 16-January-2014
mbed_official 76:aeb1df146756 7 * @brief This file provides firmware functions to manage the following
mbed_official 76:aeb1df146756 8 * functionalities of the Digital-to-Analog Converter (DAC) peripheral
mbed_official 76:aeb1df146756 9 * applicable only on STM32F051 and STM32F072 devices:
mbed_official 76:aeb1df146756 10 * + DAC channel configuration: trigger, output buffer, data format
mbed_official 76:aeb1df146756 11 * + DMA management
mbed_official 76:aeb1df146756 12 * + Interrupts and flags management
mbed_official 76:aeb1df146756 13 *
mbed_official 76:aeb1df146756 14 * @verbatim
mbed_official 76:aeb1df146756 15 *
mbed_official 76:aeb1df146756 16 ===============================================================================
mbed_official 76:aeb1df146756 17 ##### DAC Peripheral features #####
mbed_official 76:aeb1df146756 18 ===============================================================================
mbed_official 76:aeb1df146756 19 [..] The device integrates two 12-bit Digital Analog Converters refered as
mbed_official 76:aeb1df146756 20 DAC channel1 with DAC_OUT1 (PA4) and DAC_OUT2 (PA5) as outputs.
mbed_official 76:aeb1df146756 21
mbed_official 76:aeb1df146756 22 [..] Digital to Analog conversion can be non-triggered using DAC_Trigger_None
mbed_official 76:aeb1df146756 23 and DAC_OUTx is available once writing to DHRx register using
mbed_official 76:aeb1df146756 24 DAC_SetChannel1Data() or DAC_SetChannel2Data()
mbed_official 76:aeb1df146756 25
mbed_official 76:aeb1df146756 26 [..] Digital to Analog conversion can be triggered by:
mbed_official 76:aeb1df146756 27 (#) External event: EXTI Line 9 (any GPIOx_Pin9) using DAC_Trigger_Ext_IT9.
mbed_official 76:aeb1df146756 28 The used pin (GPIOx_Pin9) must be configured in input mode.
mbed_official 76:aeb1df146756 29
mbed_official 76:aeb1df146756 30 (#) Timers TRGO: TIM2, TIM3,TIM7, TIM6 and TIM15
mbed_official 76:aeb1df146756 31 (DAC_Trigger_T2_TRGO, DAC_Trigger_T3_TRGO...)
mbed_official 76:aeb1df146756 32 The timer TRGO event should be selected using TIM_SelectOutputTrigger()
mbed_official 76:aeb1df146756 33
mbed_official 76:aeb1df146756 34 (#) Software using DAC_Trigger_Software
mbed_official 76:aeb1df146756 35
mbed_official 76:aeb1df146756 36 [..] Each DAC integrates an output buffer that can be used to
mbed_official 76:aeb1df146756 37 reduce the output impedance, and to drive external loads directly
mbed_official 76:aeb1df146756 38 without having to add an external operational amplifier.
mbed_official 76:aeb1df146756 39 To enable the output buffer use
mbed_official 76:aeb1df146756 40 DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Enable;
mbed_official 76:aeb1df146756 41
mbed_official 76:aeb1df146756 42 [..] Refer to the device datasheet for more details about output impedance
mbed_official 76:aeb1df146756 43 value with and without output buffer.
mbed_official 76:aeb1df146756 44
mbed_official 76:aeb1df146756 45 [..] DAC wave generation feature
mbed_official 76:aeb1df146756 46 Both DAC channels can be used to generate
mbed_official 76:aeb1df146756 47 1- Noise wave using DAC_WaveGeneration_Noise
mbed_official 76:aeb1df146756 48 2- Triangle wave using DAC_WaveGeneration_Triangle
mbed_official 76:aeb1df146756 49
mbed_official 76:aeb1df146756 50 [..] The DAC data format can be:
mbed_official 76:aeb1df146756 51 (#) 8-bit right alignment using DAC_Align_8b_R
mbed_official 76:aeb1df146756 52 (#) 12-bit left alignment using DAC_Align_12b_L
mbed_official 76:aeb1df146756 53 (#) 12-bit right alignment using DAC_Align_12b_R
mbed_official 76:aeb1df146756 54
mbed_official 76:aeb1df146756 55 [..] The analog output voltage on each DAC channel pin is determined
mbed_official 76:aeb1df146756 56 by the following equation: DAC_OUTx = VREF+ * DOR / 4095
mbed_official 76:aeb1df146756 57 with DOR is the Data Output Register
mbed_official 76:aeb1df146756 58 VEF+ is the input voltage reference (refer to the device datasheet)
mbed_official 76:aeb1df146756 59 e.g. To set DAC_OUT1 to 0.7V, use
mbed_official 76:aeb1df146756 60 DAC_SetChannel1Data(DAC_Align_12b_R, 868);
mbed_official 76:aeb1df146756 61 Assuming that VREF+ = 3.3, DAC_OUT1 = (3.3 * 868) / 4095 = 0.7V
mbed_official 76:aeb1df146756 62
mbed_official 76:aeb1df146756 63 [..] A DMA1 request can be generated when an external trigger (but not
mbed_official 76:aeb1df146756 64 a software trigger) occurs if DMA1 requests are enabled using
mbed_official 76:aeb1df146756 65 DAC_DMACmd()
mbed_official 76:aeb1df146756 66 DMA1 requests are mapped as following:
mbed_official 76:aeb1df146756 67 (+) DAC channel1 is mapped on DMA1 channel3 which must be already
mbed_official 76:aeb1df146756 68 configured
mbed_official 76:aeb1df146756 69 (+) DAC channel2 is mapped on DMA1 channel4 which must be already
mbed_official 76:aeb1df146756 70 configured
mbed_official 76:aeb1df146756 71
mbed_official 76:aeb1df146756 72 ##### How to use this driver #####
mbed_official 76:aeb1df146756 73 ===============================================================================
mbed_official 76:aeb1df146756 74 [..]
mbed_official 76:aeb1df146756 75 (+) Enable DAC APB1 clock to get write access to DAC registers
mbed_official 76:aeb1df146756 76 using RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE)
mbed_official 76:aeb1df146756 77
mbed_official 76:aeb1df146756 78 (+) Configure DAC_OUTx (DAC_OUT1: PA4, DAC_OUT2: PA5) in analog mode
mbed_official 76:aeb1df146756 79 using GPIO_Init() function
mbed_official 76:aeb1df146756 80
mbed_official 76:aeb1df146756 81 (+) Configure the DAC channel using DAC_Init()
mbed_official 76:aeb1df146756 82
mbed_official 76:aeb1df146756 83 (+) Enable the DAC channel using DAC_Cmd()
mbed_official 76:aeb1df146756 84
mbed_official 76:aeb1df146756 85 @endverbatim
mbed_official 76:aeb1df146756 86 *
mbed_official 76:aeb1df146756 87 ******************************************************************************
mbed_official 76:aeb1df146756 88 * @attention
mbed_official 76:aeb1df146756 89 *
mbed_official 76:aeb1df146756 90 * <h2><center>&copy; COPYRIGHT 2014 STMicroelectronics</center></h2>
mbed_official 76:aeb1df146756 91 *
mbed_official 76:aeb1df146756 92 * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
mbed_official 76:aeb1df146756 93 * You may not use this file except in compliance with the License.
mbed_official 76:aeb1df146756 94 * You may obtain a copy of the License at:
mbed_official 76:aeb1df146756 95 *
mbed_official 76:aeb1df146756 96 * http://www.st.com/software_license_agreement_liberty_v2
mbed_official 76:aeb1df146756 97 *
mbed_official 76:aeb1df146756 98 * Unless required by applicable law or agreed to in writing, software
mbed_official 76:aeb1df146756 99 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 76:aeb1df146756 100 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 76:aeb1df146756 101 * See the License for the specific language governing permissions and
mbed_official 76:aeb1df146756 102 * limitations under the License.
mbed_official 76:aeb1df146756 103 *
mbed_official 76:aeb1df146756 104 ******************************************************************************
mbed_official 76:aeb1df146756 105 */
mbed_official 76:aeb1df146756 106
mbed_official 76:aeb1df146756 107 /* Includes ------------------------------------------------------------------*/
mbed_official 76:aeb1df146756 108 #include "stm32f0xx_dac.h"
mbed_official 76:aeb1df146756 109
mbed_official 76:aeb1df146756 110 /** @addtogroup STM32F0xx_StdPeriph_Driver
mbed_official 76:aeb1df146756 111 * @{
mbed_official 76:aeb1df146756 112 */
mbed_official 76:aeb1df146756 113
mbed_official 76:aeb1df146756 114 /** @defgroup DAC
mbed_official 76:aeb1df146756 115 * @brief DAC driver modules
mbed_official 76:aeb1df146756 116 * @{
mbed_official 76:aeb1df146756 117 */
mbed_official 76:aeb1df146756 118
mbed_official 76:aeb1df146756 119 /* Private typedef -----------------------------------------------------------*/
mbed_official 76:aeb1df146756 120 /* Private define ------------------------------------------------------------*/
mbed_official 76:aeb1df146756 121 /* CR register Mask */
mbed_official 76:aeb1df146756 122 #define CR_CLEAR_MASK ((uint32_t)0x00000FFE) /* check the value of the mask */
mbed_official 76:aeb1df146756 123
mbed_official 76:aeb1df146756 124 /* DAC Dual Channels SWTRIG masks */
mbed_official 76:aeb1df146756 125 #define DUAL_SWTRIG_SET ((uint32_t)0x00000003) /*!< Only applicable for STM32F072 devices */
mbed_official 76:aeb1df146756 126 #define DUAL_SWTRIG_RESET ((uint32_t)0xFFFFFFFC) /*!< Only applicable for STM32F072 devices */
mbed_official 76:aeb1df146756 127
mbed_official 76:aeb1df146756 128 /* DHR registers offsets */
mbed_official 76:aeb1df146756 129 #define DHR12R1_OFFSET ((uint32_t)0x00000008)
mbed_official 76:aeb1df146756 130 #define DHR12R2_OFFSET ((uint32_t)0x00000014) /*!< Only applicable for STM32F072 devices */
mbed_official 76:aeb1df146756 131 #define DHR12RD_OFFSET ((uint32_t)0x00000020) /*!< Only applicable for STM32F072 devices */
mbed_official 76:aeb1df146756 132
mbed_official 76:aeb1df146756 133 /* DOR register offset */
mbed_official 76:aeb1df146756 134 #define DOR_OFFSET ((uint32_t)0x0000002C)
mbed_official 76:aeb1df146756 135
mbed_official 76:aeb1df146756 136 /* Private macro -------------------------------------------------------------*/
mbed_official 76:aeb1df146756 137 /* Private variables ---------------------------------------------------------*/
mbed_official 76:aeb1df146756 138 /* Private function prototypes -----------------------------------------------*/
mbed_official 76:aeb1df146756 139 /* Private functions ---------------------------------------------------------*/
mbed_official 76:aeb1df146756 140
mbed_official 76:aeb1df146756 141 /** @defgroup DAC_Private_Functions
mbed_official 76:aeb1df146756 142 * @{
mbed_official 76:aeb1df146756 143 */
mbed_official 76:aeb1df146756 144
mbed_official 76:aeb1df146756 145 /** @defgroup DAC_Group1 DAC channels configuration
mbed_official 76:aeb1df146756 146 * @brief DAC channels configuration: trigger, output buffer, data format
mbed_official 76:aeb1df146756 147 *
mbed_official 76:aeb1df146756 148 @verbatim
mbed_official 76:aeb1df146756 149 ===============================================================================
mbed_official 76:aeb1df146756 150 ##### DAC channels configuration: trigger, output buffer, data format #####
mbed_official 76:aeb1df146756 151 ===============================================================================
mbed_official 76:aeb1df146756 152
mbed_official 76:aeb1df146756 153 @endverbatim
mbed_official 76:aeb1df146756 154 * @{
mbed_official 76:aeb1df146756 155 */
mbed_official 76:aeb1df146756 156
mbed_official 76:aeb1df146756 157 /**
mbed_official 76:aeb1df146756 158 * @brief Deinitializes the DAC peripheral registers to their default reset values.
mbed_official 76:aeb1df146756 159 * @param None
mbed_official 76:aeb1df146756 160 * @retval None
mbed_official 76:aeb1df146756 161 */
mbed_official 76:aeb1df146756 162 void DAC_DeInit(void)
mbed_official 76:aeb1df146756 163 {
mbed_official 76:aeb1df146756 164 /* Enable DAC reset state */
mbed_official 76:aeb1df146756 165 RCC_APB1PeriphResetCmd(RCC_APB1Periph_DAC, ENABLE);
mbed_official 76:aeb1df146756 166 /* Release DAC from reset state */
mbed_official 76:aeb1df146756 167 RCC_APB1PeriphResetCmd(RCC_APB1Periph_DAC, DISABLE);
mbed_official 76:aeb1df146756 168 }
mbed_official 76:aeb1df146756 169
mbed_official 76:aeb1df146756 170 /**
mbed_official 76:aeb1df146756 171 * @brief Initializes the DAC peripheral according to the specified parameters
mbed_official 76:aeb1df146756 172 * in the DAC_InitStruct.
mbed_official 76:aeb1df146756 173 * @param DAC_Channel: the selected DAC channel.
mbed_official 76:aeb1df146756 174 * This parameter can be:
mbed_official 76:aeb1df146756 175 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 76:aeb1df146756 176 * @arg DAC_Channel_2: DAC Channel2 selected, applicable only for STM32F072 devices
mbed_official 76:aeb1df146756 177 * @param DAC_InitStruct: pointer to a DAC_InitTypeDef structure that contains
mbed_official 76:aeb1df146756 178 * the configuration information for the specified DAC channel.
mbed_official 76:aeb1df146756 179 * @retval None
mbed_official 76:aeb1df146756 180 */
mbed_official 76:aeb1df146756 181 void DAC_Init(uint32_t DAC_Channel, DAC_InitTypeDef* DAC_InitStruct)
mbed_official 76:aeb1df146756 182 {
mbed_official 76:aeb1df146756 183 uint32_t tmpreg1 = 0, tmpreg2 = 0;
mbed_official 76:aeb1df146756 184
mbed_official 76:aeb1df146756 185 /* Check the DAC parameters */
mbed_official 76:aeb1df146756 186 assert_param(IS_DAC_TRIGGER(DAC_InitStruct->DAC_Trigger));
mbed_official 76:aeb1df146756 187 assert_param(IS_DAC_GENERATE_WAVE(DAC_InitStruct->DAC_WaveGeneration));
mbed_official 76:aeb1df146756 188 assert_param(IS_DAC_LFSR_UNMASK_TRIANGLE_AMPLITUDE(DAC_InitStruct->DAC_LFSRUnmask_TriangleAmplitude));
mbed_official 76:aeb1df146756 189 assert_param(IS_DAC_OUTPUT_BUFFER_STATE(DAC_InitStruct->DAC_OutputBuffer));
mbed_official 76:aeb1df146756 190
mbed_official 76:aeb1df146756 191 /*---------------------------- DAC CR Configuration --------------------------*/
mbed_official 76:aeb1df146756 192 /* Get the DAC CR value */
mbed_official 76:aeb1df146756 193 tmpreg1 = DAC->CR;
mbed_official 76:aeb1df146756 194 /* Clear BOFFx, TENx, TSELx, WAVEx and MAMPx bits */
mbed_official 76:aeb1df146756 195 tmpreg1 &= ~(CR_CLEAR_MASK << DAC_Channel);
mbed_official 76:aeb1df146756 196 /* Configure for the selected DAC channel: buffer output, trigger,
mbed_official 76:aeb1df146756 197 wave generation, mask/amplitude for wave generation */
mbed_official 76:aeb1df146756 198 /* Set TSELx and TENx bits according to DAC_Trigger value */
mbed_official 76:aeb1df146756 199 /* Set WAVEx bits according to DAC_WaveGeneration value */
mbed_official 76:aeb1df146756 200 /* Set MAMPx bits according to DAC_LFSRUnmask_TriangleAmplitude value */
mbed_official 76:aeb1df146756 201 /* Set BOFFx bit according to DAC_OutputBuffer value */
mbed_official 76:aeb1df146756 202 tmpreg2 = (DAC_InitStruct->DAC_Trigger | DAC_InitStruct->DAC_WaveGeneration |
mbed_official 76:aeb1df146756 203 DAC_InitStruct->DAC_LFSRUnmask_TriangleAmplitude | \
mbed_official 76:aeb1df146756 204 DAC_InitStruct->DAC_OutputBuffer);
mbed_official 76:aeb1df146756 205 /* Calculate CR register value depending on DAC_Channel */
mbed_official 76:aeb1df146756 206 tmpreg1 |= tmpreg2 << DAC_Channel;
mbed_official 76:aeb1df146756 207 /* Write to DAC CR */
mbed_official 76:aeb1df146756 208 DAC->CR = tmpreg1;
mbed_official 76:aeb1df146756 209 }
mbed_official 76:aeb1df146756 210
mbed_official 76:aeb1df146756 211 /**
mbed_official 76:aeb1df146756 212 * @brief Fills each DAC_InitStruct member with its default value.
mbed_official 76:aeb1df146756 213 * @param DAC_InitStruct: pointer to a DAC_InitTypeDef structure which will
mbed_official 76:aeb1df146756 214 * be initialized.
mbed_official 76:aeb1df146756 215 * @retval None
mbed_official 76:aeb1df146756 216 */
mbed_official 76:aeb1df146756 217 void DAC_StructInit(DAC_InitTypeDef* DAC_InitStruct)
mbed_official 76:aeb1df146756 218 {
mbed_official 76:aeb1df146756 219 /*--------------- Reset DAC init structure parameters values -----------------*/
mbed_official 76:aeb1df146756 220 /* Initialize the DAC_Trigger member */
mbed_official 76:aeb1df146756 221 DAC_InitStruct->DAC_Trigger = DAC_Trigger_None;
mbed_official 76:aeb1df146756 222
mbed_official 76:aeb1df146756 223 /* Initialize the DAC_WaveGeneration member */
mbed_official 76:aeb1df146756 224 DAC_InitStruct->DAC_WaveGeneration = DAC_WaveGeneration_None;
mbed_official 76:aeb1df146756 225
mbed_official 76:aeb1df146756 226 /* Initialize the DAC_LFSRUnmask_TriangleAmplitude member */
mbed_official 76:aeb1df146756 227 DAC_InitStruct->DAC_LFSRUnmask_TriangleAmplitude = DAC_LFSRUnmask_Bit0;
mbed_official 76:aeb1df146756 228
mbed_official 76:aeb1df146756 229 /* Initialize the DAC_OutputBuffer member */
mbed_official 76:aeb1df146756 230 DAC_InitStruct->DAC_OutputBuffer = DAC_OutputBuffer_Enable;
mbed_official 76:aeb1df146756 231 }
mbed_official 76:aeb1df146756 232
mbed_official 76:aeb1df146756 233 /**
mbed_official 76:aeb1df146756 234 * @brief Enables or disables the specified DAC channel.
mbed_official 76:aeb1df146756 235 * @param DAC_Channel: The selected DAC channel.
mbed_official 76:aeb1df146756 236 * This parameter can be one of the following values:
mbed_official 76:aeb1df146756 237 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 76:aeb1df146756 238 * @arg DAC_Channel_2: DAC Channel2 selected, applicable only for STM32F072 devices
mbed_official 76:aeb1df146756 239 * @param NewState: new state of the DAC channel.
mbed_official 76:aeb1df146756 240 * This parameter can be: ENABLE or DISABLE.
mbed_official 76:aeb1df146756 241 * @note When the DAC channel is enabled the trigger source can no more be modified.
mbed_official 76:aeb1df146756 242 * @retval None
mbed_official 76:aeb1df146756 243 */
mbed_official 76:aeb1df146756 244 void DAC_Cmd(uint32_t DAC_Channel, FunctionalState NewState)
mbed_official 76:aeb1df146756 245 {
mbed_official 76:aeb1df146756 246 /* Check the parameters */
mbed_official 76:aeb1df146756 247 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 76:aeb1df146756 248 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 76:aeb1df146756 249
mbed_official 76:aeb1df146756 250 if (NewState != DISABLE)
mbed_official 76:aeb1df146756 251 {
mbed_official 76:aeb1df146756 252 /* Enable the selected DAC channel */
mbed_official 76:aeb1df146756 253 DAC->CR |= (DAC_CR_EN1 << DAC_Channel);
mbed_official 76:aeb1df146756 254 }
mbed_official 76:aeb1df146756 255 else
mbed_official 76:aeb1df146756 256 {
mbed_official 76:aeb1df146756 257 /* Disable the selected DAC channel */
mbed_official 76:aeb1df146756 258 DAC->CR &= (~(DAC_CR_EN1 << DAC_Channel));
mbed_official 76:aeb1df146756 259 }
mbed_official 76:aeb1df146756 260 }
mbed_official 76:aeb1df146756 261
mbed_official 76:aeb1df146756 262 /**
mbed_official 76:aeb1df146756 263 * @brief Enables or disables the selected DAC channel software trigger.
mbed_official 76:aeb1df146756 264 * @param DAC_Channel: The selected DAC channel.
mbed_official 76:aeb1df146756 265 * This parameter can be one of the following values:
mbed_official 76:aeb1df146756 266 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 76:aeb1df146756 267 * @arg DAC_Channel_2: DAC Channel2 selected, applicable only for STM32F072 devices
mbed_official 76:aeb1df146756 268 * @param NewState: new state of the selected DAC channel software trigger.
mbed_official 76:aeb1df146756 269 * This parameter can be: ENABLE or DISABLE.
mbed_official 76:aeb1df146756 270 * @retval None
mbed_official 76:aeb1df146756 271 */
mbed_official 76:aeb1df146756 272 void DAC_SoftwareTriggerCmd(uint32_t DAC_Channel, FunctionalState NewState)
mbed_official 76:aeb1df146756 273 {
mbed_official 76:aeb1df146756 274 /* Check the parameters */
mbed_official 76:aeb1df146756 275 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 76:aeb1df146756 276 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 76:aeb1df146756 277
mbed_official 76:aeb1df146756 278 if (NewState != DISABLE)
mbed_official 76:aeb1df146756 279 {
mbed_official 76:aeb1df146756 280 /* Enable software trigger for the selected DAC channel */
mbed_official 76:aeb1df146756 281 DAC->SWTRIGR |= (uint32_t)DAC_SWTRIGR_SWTRIG1 << (DAC_Channel >> 4);
mbed_official 76:aeb1df146756 282 }
mbed_official 76:aeb1df146756 283 else
mbed_official 76:aeb1df146756 284 {
mbed_official 76:aeb1df146756 285 /* Disable software trigger for the selected DAC channel */
mbed_official 76:aeb1df146756 286 DAC->SWTRIGR &= ~((uint32_t)DAC_SWTRIGR_SWTRIG1 << (DAC_Channel >> 4));
mbed_official 76:aeb1df146756 287 }
mbed_official 76:aeb1df146756 288 }
mbed_official 76:aeb1df146756 289
mbed_official 76:aeb1df146756 290 /**
mbed_official 76:aeb1df146756 291 * @brief Enables or disables simultaneously the two DAC channels software triggers.
mbed_official 76:aeb1df146756 292 * This function is applicable only for STM32F072 devices.
mbed_official 76:aeb1df146756 293 * @param NewState: new state of the DAC channels software triggers.
mbed_official 76:aeb1df146756 294 * This parameter can be: ENABLE or DISABLE.
mbed_official 76:aeb1df146756 295 * @retval None
mbed_official 76:aeb1df146756 296 */
mbed_official 76:aeb1df146756 297 void DAC_DualSoftwareTriggerCmd(FunctionalState NewState)
mbed_official 76:aeb1df146756 298 {
mbed_official 76:aeb1df146756 299 /* Check the parameters */
mbed_official 76:aeb1df146756 300 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 76:aeb1df146756 301
mbed_official 76:aeb1df146756 302 if (NewState != DISABLE)
mbed_official 76:aeb1df146756 303 {
mbed_official 76:aeb1df146756 304 /* Enable software trigger for both DAC channels */
mbed_official 76:aeb1df146756 305 DAC->SWTRIGR |= DUAL_SWTRIG_SET;
mbed_official 76:aeb1df146756 306 }
mbed_official 76:aeb1df146756 307 else
mbed_official 76:aeb1df146756 308 {
mbed_official 76:aeb1df146756 309 /* Disable software trigger for both DAC channels */
mbed_official 76:aeb1df146756 310 DAC->SWTRIGR &= DUAL_SWTRIG_RESET;
mbed_official 76:aeb1df146756 311 }
mbed_official 76:aeb1df146756 312 }
mbed_official 76:aeb1df146756 313
mbed_official 76:aeb1df146756 314 /**
mbed_official 76:aeb1df146756 315 * @brief Enables or disables the selected DAC channel wave generation.
mbed_official 76:aeb1df146756 316 * This function is applicable only for STM32F072 devices.
mbed_official 76:aeb1df146756 317 * @param DAC_Channel: The selected DAC channel.
mbed_official 76:aeb1df146756 318 * This parameter can be:
mbed_official 76:aeb1df146756 319 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 76:aeb1df146756 320 * @arg DAC_Channel_2: DAC Channel2 selected
mbed_official 76:aeb1df146756 321 * @param DAC_Wave: specifies the wave type to enable or disable.
mbed_official 76:aeb1df146756 322 * This parameter can be:
mbed_official 76:aeb1df146756 323 * @arg DAC_Wave_Noise: noise wave generation
mbed_official 76:aeb1df146756 324 * @arg DAC_Wave_Triangle: triangle wave generation
mbed_official 76:aeb1df146756 325 * @param NewState: new state of the selected DAC channel wave generation.
mbed_official 76:aeb1df146756 326 * This parameter can be: ENABLE or DISABLE.
mbed_official 76:aeb1df146756 327 * @retval None
mbed_official 76:aeb1df146756 328 */
mbed_official 76:aeb1df146756 329 void DAC_WaveGenerationCmd(uint32_t DAC_Channel, uint32_t DAC_Wave, FunctionalState NewState)
mbed_official 76:aeb1df146756 330 {
mbed_official 76:aeb1df146756 331 /* Check the parameters */
mbed_official 76:aeb1df146756 332 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 76:aeb1df146756 333 assert_param(IS_DAC_WAVE(DAC_Wave));
mbed_official 76:aeb1df146756 334 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 76:aeb1df146756 335
mbed_official 76:aeb1df146756 336 if (NewState != DISABLE)
mbed_official 76:aeb1df146756 337 {
mbed_official 76:aeb1df146756 338 /* Enable the selected wave generation for the selected DAC channel */
mbed_official 76:aeb1df146756 339 DAC->CR |= DAC_Wave << DAC_Channel;
mbed_official 76:aeb1df146756 340 }
mbed_official 76:aeb1df146756 341 else
mbed_official 76:aeb1df146756 342 {
mbed_official 76:aeb1df146756 343 /* Disable the selected wave generation for the selected DAC channel */
mbed_official 76:aeb1df146756 344 DAC->CR &= ~(DAC_Wave << DAC_Channel);
mbed_official 76:aeb1df146756 345 }
mbed_official 76:aeb1df146756 346 }
mbed_official 76:aeb1df146756 347
mbed_official 76:aeb1df146756 348 /**
mbed_official 76:aeb1df146756 349 * @brief Set the specified data holding register value for DAC channel1.
mbed_official 76:aeb1df146756 350 * @param DAC_Align: Specifies the data alignment for DAC channel1.
mbed_official 76:aeb1df146756 351 * This parameter can be one of the following values:
mbed_official 76:aeb1df146756 352 * @arg DAC_Align_8b_R: 8bit right data alignment selected
mbed_official 76:aeb1df146756 353 * @arg DAC_Align_12b_L: 12bit left data alignment selected
mbed_official 76:aeb1df146756 354 * @arg DAC_Align_12b_R: 12bit right data alignment selected
mbed_official 76:aeb1df146756 355 * @param Data: Data to be loaded in the selected data holding register.
mbed_official 76:aeb1df146756 356 * @retval None
mbed_official 76:aeb1df146756 357 */
mbed_official 76:aeb1df146756 358 void DAC_SetChannel1Data(uint32_t DAC_Align, uint16_t Data)
mbed_official 76:aeb1df146756 359 {
mbed_official 76:aeb1df146756 360 __IO uint32_t tmp = 0;
mbed_official 76:aeb1df146756 361
mbed_official 76:aeb1df146756 362 /* Check the parameters */
mbed_official 76:aeb1df146756 363 assert_param(IS_DAC_ALIGN(DAC_Align));
mbed_official 76:aeb1df146756 364 assert_param(IS_DAC_DATA(Data));
mbed_official 76:aeb1df146756 365
mbed_official 76:aeb1df146756 366 tmp = (uint32_t)DAC_BASE;
mbed_official 76:aeb1df146756 367 tmp += DHR12R1_OFFSET + DAC_Align;
mbed_official 76:aeb1df146756 368
mbed_official 76:aeb1df146756 369 /* Set the DAC channel1 selected data holding register */
mbed_official 76:aeb1df146756 370 *(__IO uint32_t *) tmp = Data;
mbed_official 76:aeb1df146756 371 }
mbed_official 76:aeb1df146756 372
mbed_official 76:aeb1df146756 373 /**
mbed_official 76:aeb1df146756 374 * @brief Sets the specified data holding register value for DAC channel2.
mbed_official 76:aeb1df146756 375 * This function is applicable only for STM32F072 devices.
mbed_official 76:aeb1df146756 376 * @param DAC_Align: Specifies the data alignment for DAC channel2.
mbed_official 76:aeb1df146756 377 * This parameter can be:
mbed_official 76:aeb1df146756 378 * @arg DAC_Align_8b_R: 8bit right data alignment selected
mbed_official 76:aeb1df146756 379 * @arg DAC_Align_12b_L: 12bit left data alignment selected
mbed_official 76:aeb1df146756 380 * @arg DAC_Align_12b_R: 12bit right data alignment selected
mbed_official 76:aeb1df146756 381 * @param Data: Data to be loaded in the selected data holding register.
mbed_official 76:aeb1df146756 382 * @retval None
mbed_official 76:aeb1df146756 383 */
mbed_official 76:aeb1df146756 384 void DAC_SetChannel2Data(uint32_t DAC_Align, uint16_t Data)
mbed_official 76:aeb1df146756 385 {
mbed_official 76:aeb1df146756 386 __IO uint32_t tmp = 0;
mbed_official 76:aeb1df146756 387
mbed_official 76:aeb1df146756 388 /* Check the parameters */
mbed_official 76:aeb1df146756 389 assert_param(IS_DAC_ALIGN(DAC_Align));
mbed_official 76:aeb1df146756 390 assert_param(IS_DAC_DATA(Data));
mbed_official 76:aeb1df146756 391
mbed_official 76:aeb1df146756 392 tmp = (uint32_t)DAC_BASE;
mbed_official 76:aeb1df146756 393 tmp += DHR12R2_OFFSET + DAC_Align;
mbed_official 76:aeb1df146756 394
mbed_official 76:aeb1df146756 395 /* Set the DAC channel2 selected data holding register */
mbed_official 76:aeb1df146756 396 *(__IO uint32_t *)tmp = Data;
mbed_official 76:aeb1df146756 397 }
mbed_official 76:aeb1df146756 398
mbed_official 76:aeb1df146756 399 /**
mbed_official 76:aeb1df146756 400 * @brief Sets the specified data holding register value for dual channel DAC.
mbed_official 76:aeb1df146756 401 * This function is applicable only for STM32F072 devices.
mbed_official 76:aeb1df146756 402 * @param DAC_Align: Specifies the data alignment for dual channel DAC.
mbed_official 76:aeb1df146756 403 * This parameter can be:
mbed_official 76:aeb1df146756 404 * @arg DAC_Align_8b_R: 8bit right data alignment selected
mbed_official 76:aeb1df146756 405 * @arg DAC_Align_12b_L: 12bit left data alignment selected
mbed_official 76:aeb1df146756 406 * @arg DAC_Align_12b_R: 12bit right data alignment selected
mbed_official 76:aeb1df146756 407 * @param Data2: Data for DAC Channel2 to be loaded in the selected data holding register.
mbed_official 76:aeb1df146756 408 * @param Data1: Data for DAC Channel1 to be loaded in the selected data holding register.
mbed_official 76:aeb1df146756 409 * @note In dual mode, a unique register access is required to write in both
mbed_official 76:aeb1df146756 410 * DAC channels at the same time.
mbed_official 76:aeb1df146756 411 * @retval None
mbed_official 76:aeb1df146756 412 */
mbed_official 76:aeb1df146756 413 void DAC_SetDualChannelData(uint32_t DAC_Align, uint16_t Data2, uint16_t Data1)
mbed_official 76:aeb1df146756 414 {
mbed_official 76:aeb1df146756 415 uint32_t data = 0, tmp = 0;
mbed_official 76:aeb1df146756 416
mbed_official 76:aeb1df146756 417 /* Check the parameters */
mbed_official 76:aeb1df146756 418 assert_param(IS_DAC_ALIGN(DAC_Align));
mbed_official 76:aeb1df146756 419 assert_param(IS_DAC_DATA(Data1));
mbed_official 76:aeb1df146756 420 assert_param(IS_DAC_DATA(Data2));
mbed_official 76:aeb1df146756 421
mbed_official 76:aeb1df146756 422 /* Calculate and set dual DAC data holding register value */
mbed_official 76:aeb1df146756 423 if (DAC_Align == DAC_Align_8b_R)
mbed_official 76:aeb1df146756 424 {
mbed_official 76:aeb1df146756 425 data = ((uint32_t)Data2 << 8) | Data1;
mbed_official 76:aeb1df146756 426 }
mbed_official 76:aeb1df146756 427 else
mbed_official 76:aeb1df146756 428 {
mbed_official 76:aeb1df146756 429 data = ((uint32_t)Data2 << 16) | Data1;
mbed_official 76:aeb1df146756 430 }
mbed_official 76:aeb1df146756 431
mbed_official 76:aeb1df146756 432 tmp = (uint32_t)DAC_BASE;
mbed_official 76:aeb1df146756 433 tmp += DHR12RD_OFFSET + DAC_Align;
mbed_official 76:aeb1df146756 434
mbed_official 76:aeb1df146756 435 /* Set the dual DAC selected data holding register */
mbed_official 76:aeb1df146756 436 *(__IO uint32_t *)tmp = data;
mbed_official 76:aeb1df146756 437 }
mbed_official 76:aeb1df146756 438
mbed_official 76:aeb1df146756 439 /**
mbed_official 76:aeb1df146756 440 * @brief Returns the last data output value of the selected DAC channel.
mbed_official 76:aeb1df146756 441 * @param DAC_Channel: The selected DAC channel.
mbed_official 76:aeb1df146756 442 * This parameter can be one of the following values:
mbed_official 76:aeb1df146756 443 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 76:aeb1df146756 444 * @arg DAC_Channel_2: DAC Channel2 selected, applicable only for STM32F072 devices
mbed_official 76:aeb1df146756 445 * @retval The selected DAC channel data output value.
mbed_official 76:aeb1df146756 446 */
mbed_official 76:aeb1df146756 447 uint16_t DAC_GetDataOutputValue(uint32_t DAC_Channel)
mbed_official 76:aeb1df146756 448 {
mbed_official 76:aeb1df146756 449 __IO uint32_t tmp = 0;
mbed_official 76:aeb1df146756 450
mbed_official 76:aeb1df146756 451 /* Check the parameters */
mbed_official 76:aeb1df146756 452 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 76:aeb1df146756 453
mbed_official 76:aeb1df146756 454 tmp = (uint32_t) DAC_BASE ;
mbed_official 76:aeb1df146756 455 tmp += DOR_OFFSET + ((uint32_t)DAC_Channel >> 2);
mbed_official 76:aeb1df146756 456
mbed_official 76:aeb1df146756 457 /* Returns the DAC channel data output register value */
mbed_official 76:aeb1df146756 458 return (uint16_t) (*(__IO uint32_t*) tmp);
mbed_official 76:aeb1df146756 459 }
mbed_official 76:aeb1df146756 460
mbed_official 76:aeb1df146756 461 /**
mbed_official 76:aeb1df146756 462 * @}
mbed_official 76:aeb1df146756 463 */
mbed_official 76:aeb1df146756 464
mbed_official 76:aeb1df146756 465 /** @defgroup DAC_Group2 DMA management functions
mbed_official 76:aeb1df146756 466 * @brief DMA management functions
mbed_official 76:aeb1df146756 467 *
mbed_official 76:aeb1df146756 468 @verbatim
mbed_official 76:aeb1df146756 469 ===============================================================================
mbed_official 76:aeb1df146756 470 ##### DMA management functions #####
mbed_official 76:aeb1df146756 471 ===============================================================================
mbed_official 76:aeb1df146756 472
mbed_official 76:aeb1df146756 473 @endverbatim
mbed_official 76:aeb1df146756 474 * @{
mbed_official 76:aeb1df146756 475 */
mbed_official 76:aeb1df146756 476
mbed_official 76:aeb1df146756 477 /**
mbed_official 76:aeb1df146756 478 * @brief Enables or disables the specified DAC channel DMA request.
mbed_official 76:aeb1df146756 479 * When enabled DMA1 is generated when an external trigger (EXTI Line9,
mbed_official 76:aeb1df146756 480 * TIM2, TIM3, TIM6 or TIM15 but not a software trigger) occurs
mbed_official 76:aeb1df146756 481 * @param DAC_Channel: the selected DAC channel.
mbed_official 76:aeb1df146756 482 * This parameter can be one of the following values:
mbed_official 76:aeb1df146756 483 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 76:aeb1df146756 484 * @arg DAC_Channel_2: DAC Channel2 selected, applicable only for STM32F072 devices
mbed_official 76:aeb1df146756 485 * @param NewState: new state of the selected DAC channel DMA request.
mbed_official 76:aeb1df146756 486 * This parameter can be: ENABLE or DISABLE.
mbed_official 76:aeb1df146756 487 * @note The DAC channel1 is mapped on DMA1 channel3 which must be already configured.
mbed_official 76:aeb1df146756 488 * @note The DAC channel2 is mapped on DMA1 channel4 which must be already configured.
mbed_official 76:aeb1df146756 489 * @retval None
mbed_official 76:aeb1df146756 490 */
mbed_official 76:aeb1df146756 491 void DAC_DMACmd(uint32_t DAC_Channel, FunctionalState NewState)
mbed_official 76:aeb1df146756 492 {
mbed_official 76:aeb1df146756 493 /* Check the parameters */
mbed_official 76:aeb1df146756 494 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 76:aeb1df146756 495 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 76:aeb1df146756 496
mbed_official 76:aeb1df146756 497 if (NewState != DISABLE)
mbed_official 76:aeb1df146756 498 {
mbed_official 76:aeb1df146756 499 /* Enable the selected DAC channel DMA request */
mbed_official 76:aeb1df146756 500 DAC->CR |= (DAC_CR_DMAEN1 << DAC_Channel);
mbed_official 76:aeb1df146756 501 }
mbed_official 76:aeb1df146756 502 else
mbed_official 76:aeb1df146756 503 {
mbed_official 76:aeb1df146756 504 /* Disable the selected DAC channel DMA request */
mbed_official 76:aeb1df146756 505 DAC->CR &= (~(DAC_CR_DMAEN1 << DAC_Channel));
mbed_official 76:aeb1df146756 506 }
mbed_official 76:aeb1df146756 507 }
mbed_official 76:aeb1df146756 508
mbed_official 76:aeb1df146756 509 /**
mbed_official 76:aeb1df146756 510 * @}
mbed_official 76:aeb1df146756 511 */
mbed_official 76:aeb1df146756 512
mbed_official 76:aeb1df146756 513 /** @defgroup DAC_Group3 Interrupts and flags management functions
mbed_official 76:aeb1df146756 514 * @brief Interrupts and flags management functions
mbed_official 76:aeb1df146756 515 *
mbed_official 76:aeb1df146756 516 @verbatim
mbed_official 76:aeb1df146756 517 ===============================================================================
mbed_official 76:aeb1df146756 518 ##### Interrupts and flags management functions #####
mbed_official 76:aeb1df146756 519 ===============================================================================
mbed_official 76:aeb1df146756 520
mbed_official 76:aeb1df146756 521 @endverbatim
mbed_official 76:aeb1df146756 522 * @{
mbed_official 76:aeb1df146756 523 */
mbed_official 76:aeb1df146756 524
mbed_official 76:aeb1df146756 525 /**
mbed_official 76:aeb1df146756 526 * @brief Enables or disables the specified DAC interrupts.
mbed_official 76:aeb1df146756 527 * @param DAC_Channel: The selected DAC channel.
mbed_official 76:aeb1df146756 528 * This parameter can be:
mbed_official 76:aeb1df146756 529 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 76:aeb1df146756 530 * @arg DAC_Channel_2: DAC Channel2 selected, applicable only for STM32F072 devices
mbed_official 76:aeb1df146756 531 * @param DAC_IT: specifies the DAC interrupt sources to be enabled or disabled.
mbed_official 76:aeb1df146756 532 * This parameter can be the following values:
mbed_official 76:aeb1df146756 533 * @arg DAC_IT_DMAUDR: DMA underrun interrupt mask
mbed_official 76:aeb1df146756 534 * @note The DMA underrun occurs when a second external trigger arrives before the
mbed_official 76:aeb1df146756 535 * acknowledgement for the first external trigger is received (first request).
mbed_official 76:aeb1df146756 536 * @param NewState: new state of the specified DAC interrupts.
mbed_official 76:aeb1df146756 537 * This parameter can be: ENABLE or DISABLE.
mbed_official 76:aeb1df146756 538 * @retval None
mbed_official 76:aeb1df146756 539 */
mbed_official 76:aeb1df146756 540 void DAC_ITConfig(uint32_t DAC_Channel, uint32_t DAC_IT, FunctionalState NewState)
mbed_official 76:aeb1df146756 541 {
mbed_official 76:aeb1df146756 542 /* Check the parameters */
mbed_official 76:aeb1df146756 543 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 76:aeb1df146756 544 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 76:aeb1df146756 545 assert_param(IS_DAC_IT(DAC_IT));
mbed_official 76:aeb1df146756 546
mbed_official 76:aeb1df146756 547 if (NewState != DISABLE)
mbed_official 76:aeb1df146756 548 {
mbed_official 76:aeb1df146756 549 /* Enable the selected DAC interrupts */
mbed_official 76:aeb1df146756 550 DAC->CR |= (DAC_IT << DAC_Channel);
mbed_official 76:aeb1df146756 551 }
mbed_official 76:aeb1df146756 552 else
mbed_official 76:aeb1df146756 553 {
mbed_official 76:aeb1df146756 554 /* Disable the selected DAC interrupts */
mbed_official 76:aeb1df146756 555 DAC->CR &= (~(uint32_t)(DAC_IT << DAC_Channel));
mbed_official 76:aeb1df146756 556 }
mbed_official 76:aeb1df146756 557 }
mbed_official 76:aeb1df146756 558
mbed_official 76:aeb1df146756 559 /**
mbed_official 76:aeb1df146756 560 * @brief Checks whether the specified DAC flag is set or not.
mbed_official 76:aeb1df146756 561 * @param DAC_Channel: The selected DAC channel.
mbed_official 76:aeb1df146756 562 * This parameter can be one of the following values:
mbed_official 76:aeb1df146756 563 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 76:aeb1df146756 564 * @arg DAC_Channel_2: DAC Channel2 selected, applicable only for STM32F072 devices
mbed_official 76:aeb1df146756 565 * @param DAC_FLAG: specifies the flag to check.
mbed_official 76:aeb1df146756 566 * This parameter can be only of the following value:
mbed_official 76:aeb1df146756 567 * @arg DAC_FLAG_DMAUDR: DMA underrun flag
mbed_official 76:aeb1df146756 568 * @note The DMA underrun occurs when a second external trigger arrives before the
mbed_official 76:aeb1df146756 569 * acknowledgement for the first external trigger is received (first request).
mbed_official 76:aeb1df146756 570 * @retval The new state of DAC_FLAG (SET or RESET).
mbed_official 76:aeb1df146756 571 */
mbed_official 76:aeb1df146756 572 FlagStatus DAC_GetFlagStatus(uint32_t DAC_Channel, uint32_t DAC_FLAG)
mbed_official 76:aeb1df146756 573 {
mbed_official 76:aeb1df146756 574 FlagStatus bitstatus = RESET;
mbed_official 76:aeb1df146756 575 /* Check the parameters */
mbed_official 76:aeb1df146756 576 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 76:aeb1df146756 577 assert_param(IS_DAC_FLAG(DAC_FLAG));
mbed_official 76:aeb1df146756 578
mbed_official 76:aeb1df146756 579 /* Check the status of the specified DAC flag */
mbed_official 76:aeb1df146756 580 if ((DAC->SR & (DAC_FLAG << DAC_Channel)) != (uint8_t)RESET)
mbed_official 76:aeb1df146756 581 {
mbed_official 76:aeb1df146756 582 /* DAC_FLAG is set */
mbed_official 76:aeb1df146756 583 bitstatus = SET;
mbed_official 76:aeb1df146756 584 }
mbed_official 76:aeb1df146756 585 else
mbed_official 76:aeb1df146756 586 {
mbed_official 76:aeb1df146756 587 /* DAC_FLAG is reset */
mbed_official 76:aeb1df146756 588 bitstatus = RESET;
mbed_official 76:aeb1df146756 589 }
mbed_official 76:aeb1df146756 590 /* Return the DAC_FLAG status */
mbed_official 76:aeb1df146756 591 return bitstatus;
mbed_official 76:aeb1df146756 592 }
mbed_official 76:aeb1df146756 593
mbed_official 76:aeb1df146756 594 /**
mbed_official 76:aeb1df146756 595 * @brief Clears the DAC channel's pending flags.
mbed_official 76:aeb1df146756 596 * @param DAC_Channel: The selected DAC channel.
mbed_official 76:aeb1df146756 597 * This parameter can be one of the following values:
mbed_official 76:aeb1df146756 598 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 76:aeb1df146756 599 * @arg DAC_Channel_2: DAC Channel2 selected, applicable only for STM32F072 devices
mbed_official 76:aeb1df146756 600 * @param DAC_FLAG: specifies the flag to clear.
mbed_official 76:aeb1df146756 601 * This parameter can be of the following value:
mbed_official 76:aeb1df146756 602 * @arg DAC_FLAG_DMAUDR: DMA underrun flag
mbed_official 76:aeb1df146756 603 * @retval None
mbed_official 76:aeb1df146756 604 */
mbed_official 76:aeb1df146756 605 void DAC_ClearFlag(uint32_t DAC_Channel, uint32_t DAC_FLAG)
mbed_official 76:aeb1df146756 606 {
mbed_official 76:aeb1df146756 607 /* Check the parameters */
mbed_official 76:aeb1df146756 608 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 76:aeb1df146756 609 assert_param(IS_DAC_FLAG(DAC_FLAG));
mbed_official 76:aeb1df146756 610
mbed_official 76:aeb1df146756 611 /* Clear the selected DAC flags */
mbed_official 76:aeb1df146756 612 DAC->SR = (DAC_FLAG << DAC_Channel);
mbed_official 76:aeb1df146756 613 }
mbed_official 76:aeb1df146756 614
mbed_official 76:aeb1df146756 615 /**
mbed_official 76:aeb1df146756 616 * @brief Checks whether the specified DAC interrupt has occurred or not.
mbed_official 76:aeb1df146756 617 * @param DAC_Channel: The selected DAC channel.
mbed_official 76:aeb1df146756 618 * This parameter can be one of the following values:
mbed_official 76:aeb1df146756 619 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 76:aeb1df146756 620 * @arg DAC_Channel_2: DAC Channel2 selected, applicable only for STM32F072 devices
mbed_official 76:aeb1df146756 621 * @param DAC_IT: specifies the DAC interrupt source to check.
mbed_official 76:aeb1df146756 622 * This parameter can be the following values:
mbed_official 76:aeb1df146756 623 * @arg DAC_IT_DMAUDR: DMA underrun interrupt mask
mbed_official 76:aeb1df146756 624 * @note The DMA underrun occurs when a second external trigger arrives before the
mbed_official 76:aeb1df146756 625 * acknowledgement for the first external trigger is received (first request).
mbed_official 76:aeb1df146756 626 * @retval The new state of DAC_IT (SET or RESET).
mbed_official 76:aeb1df146756 627 */
mbed_official 76:aeb1df146756 628 ITStatus DAC_GetITStatus(uint32_t DAC_Channel, uint32_t DAC_IT)
mbed_official 76:aeb1df146756 629 {
mbed_official 76:aeb1df146756 630 ITStatus bitstatus = RESET;
mbed_official 76:aeb1df146756 631 uint32_t enablestatus = 0;
mbed_official 76:aeb1df146756 632
mbed_official 76:aeb1df146756 633 /* Check the parameters */
mbed_official 76:aeb1df146756 634 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 76:aeb1df146756 635 assert_param(IS_DAC_IT(DAC_IT));
mbed_official 76:aeb1df146756 636
mbed_official 76:aeb1df146756 637 /* Get the DAC_IT enable bit status */
mbed_official 76:aeb1df146756 638 enablestatus = (DAC->CR & (DAC_IT << DAC_Channel)) ;
mbed_official 76:aeb1df146756 639
mbed_official 76:aeb1df146756 640 /* Check the status of the specified DAC interrupt */
mbed_official 76:aeb1df146756 641 if (((DAC->SR & (DAC_IT << DAC_Channel)) != (uint32_t)RESET) && enablestatus)
mbed_official 76:aeb1df146756 642 {
mbed_official 76:aeb1df146756 643 /* DAC_IT is set */
mbed_official 76:aeb1df146756 644 bitstatus = SET;
mbed_official 76:aeb1df146756 645 }
mbed_official 76:aeb1df146756 646 else
mbed_official 76:aeb1df146756 647 {
mbed_official 76:aeb1df146756 648 /* DAC_IT is reset */
mbed_official 76:aeb1df146756 649 bitstatus = RESET;
mbed_official 76:aeb1df146756 650 }
mbed_official 76:aeb1df146756 651 /* Return the DAC_IT status */
mbed_official 76:aeb1df146756 652 return bitstatus;
mbed_official 76:aeb1df146756 653 }
mbed_official 76:aeb1df146756 654
mbed_official 76:aeb1df146756 655 /**
mbed_official 76:aeb1df146756 656 * @brief Clears the DAC channel's interrupt pending bits.
mbed_official 76:aeb1df146756 657 * @param DAC_Channel: The selected DAC channel.
mbed_official 76:aeb1df146756 658 * This parameter can be one of the following values:
mbed_official 76:aeb1df146756 659 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 76:aeb1df146756 660 * @arg DAC_Channel_2: DAC Channel2 selected, applicable only for STM32F072 devices
mbed_official 76:aeb1df146756 661 * @param DAC_IT: specifies the DAC interrupt pending bit to clear.
mbed_official 76:aeb1df146756 662 * This parameter can be the following values:
mbed_official 76:aeb1df146756 663 * @arg DAC_IT_DMAUDR: DMA underrun interrupt mask
mbed_official 76:aeb1df146756 664 * @retval None
mbed_official 76:aeb1df146756 665 */
mbed_official 76:aeb1df146756 666 void DAC_ClearITPendingBit(uint32_t DAC_Channel, uint32_t DAC_IT)
mbed_official 76:aeb1df146756 667 {
mbed_official 76:aeb1df146756 668 /* Check the parameters */
mbed_official 76:aeb1df146756 669 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 76:aeb1df146756 670 assert_param(IS_DAC_IT(DAC_IT));
mbed_official 76:aeb1df146756 671
mbed_official 76:aeb1df146756 672 /* Clear the selected DAC interrupt pending bits */
mbed_official 76:aeb1df146756 673 DAC->SR = (DAC_IT << DAC_Channel);
mbed_official 76:aeb1df146756 674 }
mbed_official 76:aeb1df146756 675
mbed_official 76:aeb1df146756 676 /**
mbed_official 76:aeb1df146756 677 * @}
mbed_official 76:aeb1df146756 678 */
mbed_official 76:aeb1df146756 679
mbed_official 76:aeb1df146756 680 /**
mbed_official 76:aeb1df146756 681 * @}
mbed_official 76:aeb1df146756 682 */
mbed_official 76:aeb1df146756 683
mbed_official 76:aeb1df146756 684 /**
mbed_official 76:aeb1df146756 685 * @}
mbed_official 76:aeb1df146756 686 */
mbed_official 76:aeb1df146756 687
mbed_official 76:aeb1df146756 688 /**
mbed_official 76:aeb1df146756 689 * @}
mbed_official 76:aeb1df146756 690 */
mbed_official 76:aeb1df146756 691
mbed_official 76:aeb1df146756 692 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/