Abdessamad El Abbassi / mbed-src-temp

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targets/cmsis/TARGET_STM/TARGET_DISCO_F051R8/stm32f0xx_dac.c@130:1dec54e4aec3, 2014-03-21 (annotated)

Committer:
mbed_official
Date:
Fri Mar 21 11:45:09 2014 +0000
Revision:
130:1dec54e4aec3
Synchronized with git revision e5c9ff6781a4e277a5a454e5a0b037f76e31739d



Full URL: https://github.com/mbedmicro/mbed/commit/e5c9ff6781a4e277a5a454e5a0b037f76e31739d/



STM32F0-Discovery (STM32F051R8) initial port

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 130:1dec54e4aec3 1 /**
mbed_official 130:1dec54e4aec3 2 ******************************************************************************
mbed_official 130:1dec54e4aec3 3 * @file stm32f0xx_dac.c
mbed_official 130:1dec54e4aec3 4 * @author MCD Application Team
mbed_official 130:1dec54e4aec3 5 * @version V1.3.0
mbed_official 130:1dec54e4aec3 6 * @date 16-January-2014
mbed_official 130:1dec54e4aec3 7 * @brief This file provides firmware functions to manage the following
mbed_official 130:1dec54e4aec3 8 * functionalities of the Digital-to-Analog Converter (DAC) peripheral
mbed_official 130:1dec54e4aec3 9 * applicable only on STM32F051 and STM32F072 devices:
mbed_official 130:1dec54e4aec3 10 * + DAC channel configuration: trigger, output buffer, data format
mbed_official 130:1dec54e4aec3 11 * + DMA management
mbed_official 130:1dec54e4aec3 12 * + Interrupts and flags management
mbed_official 130:1dec54e4aec3 13 *
mbed_official 130:1dec54e4aec3 14 * @verbatim
mbed_official 130:1dec54e4aec3 15 *
mbed_official 130:1dec54e4aec3 16 ===============================================================================
mbed_official 130:1dec54e4aec3 17 ##### DAC Peripheral features #####
mbed_official 130:1dec54e4aec3 18 ===============================================================================
mbed_official 130:1dec54e4aec3 19 [..] The device integrates two 12-bit Digital Analog Converters refered as
mbed_official 130:1dec54e4aec3 20 DAC channel1 with DAC_OUT1 (PA4) and DAC_OUT2 (PA5) as outputs.
mbed_official 130:1dec54e4aec3 21
mbed_official 130:1dec54e4aec3 22 [..] Digital to Analog conversion can be non-triggered using DAC_Trigger_None
mbed_official 130:1dec54e4aec3 23 and DAC_OUTx is available once writing to DHRx register using
mbed_official 130:1dec54e4aec3 24 DAC_SetChannel1Data() or DAC_SetChannel2Data()
mbed_official 130:1dec54e4aec3 25
mbed_official 130:1dec54e4aec3 26 [..] Digital to Analog conversion can be triggered by:
mbed_official 130:1dec54e4aec3 27 (#) External event: EXTI Line 9 (any GPIOx_Pin9) using DAC_Trigger_Ext_IT9.
mbed_official 130:1dec54e4aec3 28 The used pin (GPIOx_Pin9) must be configured in input mode.
mbed_official 130:1dec54e4aec3 29
mbed_official 130:1dec54e4aec3 30 (#) Timers TRGO: TIM2, TIM3,TIM7, TIM6 and TIM15
mbed_official 130:1dec54e4aec3 31 (DAC_Trigger_T2_TRGO, DAC_Trigger_T3_TRGO...)
mbed_official 130:1dec54e4aec3 32 The timer TRGO event should be selected using TIM_SelectOutputTrigger()
mbed_official 130:1dec54e4aec3 33
mbed_official 130:1dec54e4aec3 34 (#) Software using DAC_Trigger_Software
mbed_official 130:1dec54e4aec3 35
mbed_official 130:1dec54e4aec3 36 [..] Each DAC integrates an output buffer that can be used to
mbed_official 130:1dec54e4aec3 37 reduce the output impedance, and to drive external loads directly
mbed_official 130:1dec54e4aec3 38 without having to add an external operational amplifier.
mbed_official 130:1dec54e4aec3 39 To enable the output buffer use
mbed_official 130:1dec54e4aec3 40 DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Enable;
mbed_official 130:1dec54e4aec3 41
mbed_official 130:1dec54e4aec3 42 [..] Refer to the device datasheet for more details about output impedance
mbed_official 130:1dec54e4aec3 43 value with and without output buffer.
mbed_official 130:1dec54e4aec3 44
mbed_official 130:1dec54e4aec3 45 [..] DAC wave generation feature
mbed_official 130:1dec54e4aec3 46 Both DAC channels can be used to generate
mbed_official 130:1dec54e4aec3 47 1- Noise wave using DAC_WaveGeneration_Noise
mbed_official 130:1dec54e4aec3 48 2- Triangle wave using DAC_WaveGeneration_Triangle
mbed_official 130:1dec54e4aec3 49
mbed_official 130:1dec54e4aec3 50 [..] The DAC data format can be:
mbed_official 130:1dec54e4aec3 51 (#) 8-bit right alignment using DAC_Align_8b_R
mbed_official 130:1dec54e4aec3 52 (#) 12-bit left alignment using DAC_Align_12b_L
mbed_official 130:1dec54e4aec3 53 (#) 12-bit right alignment using DAC_Align_12b_R
mbed_official 130:1dec54e4aec3 54
mbed_official 130:1dec54e4aec3 55 [..] The analog output voltage on each DAC channel pin is determined
mbed_official 130:1dec54e4aec3 56 by the following equation: DAC_OUTx = VREF+ * DOR / 4095
mbed_official 130:1dec54e4aec3 57 with DOR is the Data Output Register
mbed_official 130:1dec54e4aec3 58 VEF+ is the input voltage reference (refer to the device datasheet)
mbed_official 130:1dec54e4aec3 59 e.g. To set DAC_OUT1 to 0.7V, use
mbed_official 130:1dec54e4aec3 60 DAC_SetChannel1Data(DAC_Align_12b_R, 868);
mbed_official 130:1dec54e4aec3 61 Assuming that VREF+ = 3.3, DAC_OUT1 = (3.3 * 868) / 4095 = 0.7V
mbed_official 130:1dec54e4aec3 62
mbed_official 130:1dec54e4aec3 63 [..] A DMA1 request can be generated when an external trigger (but not
mbed_official 130:1dec54e4aec3 64 a software trigger) occurs if DMA1 requests are enabled using
mbed_official 130:1dec54e4aec3 65 DAC_DMACmd()
mbed_official 130:1dec54e4aec3 66 DMA1 requests are mapped as following:
mbed_official 130:1dec54e4aec3 67 (+) DAC channel1 is mapped on DMA1 channel3 which must be already
mbed_official 130:1dec54e4aec3 68 configured
mbed_official 130:1dec54e4aec3 69 (+) DAC channel2 is mapped on DMA1 channel4 which must be already
mbed_official 130:1dec54e4aec3 70 configured
mbed_official 130:1dec54e4aec3 71
mbed_official 130:1dec54e4aec3 72 ##### How to use this driver #####
mbed_official 130:1dec54e4aec3 73 ===============================================================================
mbed_official 130:1dec54e4aec3 74 [..]
mbed_official 130:1dec54e4aec3 75 (+) Enable DAC APB1 clock to get write access to DAC registers
mbed_official 130:1dec54e4aec3 76 using RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE)
mbed_official 130:1dec54e4aec3 77
mbed_official 130:1dec54e4aec3 78 (+) Configure DAC_OUTx (DAC_OUT1: PA4, DAC_OUT2: PA5) in analog mode
mbed_official 130:1dec54e4aec3 79 using GPIO_Init() function
mbed_official 130:1dec54e4aec3 80
mbed_official 130:1dec54e4aec3 81 (+) Configure the DAC channel using DAC_Init()
mbed_official 130:1dec54e4aec3 82
mbed_official 130:1dec54e4aec3 83 (+) Enable the DAC channel using DAC_Cmd()
mbed_official 130:1dec54e4aec3 84
mbed_official 130:1dec54e4aec3 85 @endverbatim
mbed_official 130:1dec54e4aec3 86 *
mbed_official 130:1dec54e4aec3 87 ******************************************************************************
mbed_official 130:1dec54e4aec3 88 * @attention
mbed_official 130:1dec54e4aec3 89 *
mbed_official 130:1dec54e4aec3 90 * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
mbed_official 130:1dec54e4aec3 91 *
mbed_official 130:1dec54e4aec3 92 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 130:1dec54e4aec3 93 * are permitted provided that the following conditions are met:
mbed_official 130:1dec54e4aec3 94 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 130:1dec54e4aec3 95 * this list of conditions and the following disclaimer.
mbed_official 130:1dec54e4aec3 96 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 130:1dec54e4aec3 97 * this list of conditions and the following disclaimer in the documentation
mbed_official 130:1dec54e4aec3 98 * and/or other materials provided with the distribution.
mbed_official 130:1dec54e4aec3 99 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 130:1dec54e4aec3 100 * may be used to endorse or promote products derived from this software
mbed_official 130:1dec54e4aec3 101 * without specific prior written permission.
mbed_official 130:1dec54e4aec3 102 *
mbed_official 130:1dec54e4aec3 103 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 130:1dec54e4aec3 104 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 130:1dec54e4aec3 105 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 130:1dec54e4aec3 106 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 130:1dec54e4aec3 107 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 130:1dec54e4aec3 108 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 130:1dec54e4aec3 109 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 130:1dec54e4aec3 110 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 130:1dec54e4aec3 111 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 130:1dec54e4aec3 112 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 130:1dec54e4aec3 113 *
mbed_official 130:1dec54e4aec3 114 ******************************************************************************
mbed_official 130:1dec54e4aec3 115 */
mbed_official 130:1dec54e4aec3 116
mbed_official 130:1dec54e4aec3 117 /* Includes ------------------------------------------------------------------*/
mbed_official 130:1dec54e4aec3 118 #include "stm32f0xx_dac.h"
mbed_official 130:1dec54e4aec3 119
mbed_official 130:1dec54e4aec3 120 /** @addtogroup STM32F0xx_StdPeriph_Driver
mbed_official 130:1dec54e4aec3 121 * @{
mbed_official 130:1dec54e4aec3 122 */
mbed_official 130:1dec54e4aec3 123
mbed_official 130:1dec54e4aec3 124 /** @defgroup DAC
mbed_official 130:1dec54e4aec3 125 * @brief DAC driver modules
mbed_official 130:1dec54e4aec3 126 * @{
mbed_official 130:1dec54e4aec3 127 */
mbed_official 130:1dec54e4aec3 128
mbed_official 130:1dec54e4aec3 129 /* Private typedef -----------------------------------------------------------*/
mbed_official 130:1dec54e4aec3 130 /* Private define ------------------------------------------------------------*/
mbed_official 130:1dec54e4aec3 131 /* CR register Mask */
mbed_official 130:1dec54e4aec3 132 #define CR_CLEAR_MASK ((uint32_t)0x00000FFE) /* check the value of the mask */
mbed_official 130:1dec54e4aec3 133
mbed_official 130:1dec54e4aec3 134 /* DAC Dual Channels SWTRIG masks */
mbed_official 130:1dec54e4aec3 135 #define DUAL_SWTRIG_SET ((uint32_t)0x00000003) /*!< Only applicable for STM32F072 devices */
mbed_official 130:1dec54e4aec3 136 #define DUAL_SWTRIG_RESET ((uint32_t)0xFFFFFFFC) /*!< Only applicable for STM32F072 devices */
mbed_official 130:1dec54e4aec3 137
mbed_official 130:1dec54e4aec3 138 /* DHR registers offsets */
mbed_official 130:1dec54e4aec3 139 #define DHR12R1_OFFSET ((uint32_t)0x00000008)
mbed_official 130:1dec54e4aec3 140 #define DHR12R2_OFFSET ((uint32_t)0x00000014) /*!< Only applicable for STM32F072 devices */
mbed_official 130:1dec54e4aec3 141 #define DHR12RD_OFFSET ((uint32_t)0x00000020) /*!< Only applicable for STM32F072 devices */
mbed_official 130:1dec54e4aec3 142
mbed_official 130:1dec54e4aec3 143 /* DOR register offset */
mbed_official 130:1dec54e4aec3 144 #define DOR_OFFSET ((uint32_t)0x0000002C)
mbed_official 130:1dec54e4aec3 145
mbed_official 130:1dec54e4aec3 146 /* Private macro -------------------------------------------------------------*/
mbed_official 130:1dec54e4aec3 147 /* Private variables ---------------------------------------------------------*/
mbed_official 130:1dec54e4aec3 148 /* Private function prototypes -----------------------------------------------*/
mbed_official 130:1dec54e4aec3 149 /* Private functions ---------------------------------------------------------*/
mbed_official 130:1dec54e4aec3 150
mbed_official 130:1dec54e4aec3 151 /** @defgroup DAC_Private_Functions
mbed_official 130:1dec54e4aec3 152 * @{
mbed_official 130:1dec54e4aec3 153 */
mbed_official 130:1dec54e4aec3 154
mbed_official 130:1dec54e4aec3 155 /** @defgroup DAC_Group1 DAC channels configuration
mbed_official 130:1dec54e4aec3 156 * @brief DAC channels configuration: trigger, output buffer, data format
mbed_official 130:1dec54e4aec3 157 *
mbed_official 130:1dec54e4aec3 158 @verbatim
mbed_official 130:1dec54e4aec3 159 ===============================================================================
mbed_official 130:1dec54e4aec3 160 ##### DAC channels configuration: trigger, output buffer, data format #####
mbed_official 130:1dec54e4aec3 161 ===============================================================================
mbed_official 130:1dec54e4aec3 162
mbed_official 130:1dec54e4aec3 163 @endverbatim
mbed_official 130:1dec54e4aec3 164 * @{
mbed_official 130:1dec54e4aec3 165 */
mbed_official 130:1dec54e4aec3 166
mbed_official 130:1dec54e4aec3 167 /**
mbed_official 130:1dec54e4aec3 168 * @brief Deinitializes the DAC peripheral registers to their default reset values.
mbed_official 130:1dec54e4aec3 169 * @param None
mbed_official 130:1dec54e4aec3 170 * @retval None
mbed_official 130:1dec54e4aec3 171 */
mbed_official 130:1dec54e4aec3 172 void DAC_DeInit(void)
mbed_official 130:1dec54e4aec3 173 {
mbed_official 130:1dec54e4aec3 174 /* Enable DAC reset state */
mbed_official 130:1dec54e4aec3 175 RCC_APB1PeriphResetCmd(RCC_APB1Periph_DAC, ENABLE);
mbed_official 130:1dec54e4aec3 176 /* Release DAC from reset state */
mbed_official 130:1dec54e4aec3 177 RCC_APB1PeriphResetCmd(RCC_APB1Periph_DAC, DISABLE);
mbed_official 130:1dec54e4aec3 178 }
mbed_official 130:1dec54e4aec3 179
mbed_official 130:1dec54e4aec3 180 /**
mbed_official 130:1dec54e4aec3 181 * @brief Initializes the DAC peripheral according to the specified parameters
mbed_official 130:1dec54e4aec3 182 * in the DAC_InitStruct.
mbed_official 130:1dec54e4aec3 183 * @param DAC_Channel: the selected DAC channel.
mbed_official 130:1dec54e4aec3 184 * This parameter can be:
mbed_official 130:1dec54e4aec3 185 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 130:1dec54e4aec3 186 * @arg DAC_Channel_2: DAC Channel2 selected, applicable only for STM32F072 devices
mbed_official 130:1dec54e4aec3 187 * @param DAC_InitStruct: pointer to a DAC_InitTypeDef structure that contains
mbed_official 130:1dec54e4aec3 188 * the configuration information for the specified DAC channel.
mbed_official 130:1dec54e4aec3 189 * @retval None
mbed_official 130:1dec54e4aec3 190 */
mbed_official 130:1dec54e4aec3 191 void DAC_Init(uint32_t DAC_Channel, DAC_InitTypeDef* DAC_InitStruct)
mbed_official 130:1dec54e4aec3 192 {
mbed_official 130:1dec54e4aec3 193 uint32_t tmpreg1 = 0, tmpreg2 = 0;
mbed_official 130:1dec54e4aec3 194
mbed_official 130:1dec54e4aec3 195 /* Check the DAC parameters */
mbed_official 130:1dec54e4aec3 196 assert_param(IS_DAC_TRIGGER(DAC_InitStruct->DAC_Trigger));
mbed_official 130:1dec54e4aec3 197 assert_param(IS_DAC_GENERATE_WAVE(DAC_InitStruct->DAC_WaveGeneration));
mbed_official 130:1dec54e4aec3 198 assert_param(IS_DAC_LFSR_UNMASK_TRIANGLE_AMPLITUDE(DAC_InitStruct->DAC_LFSRUnmask_TriangleAmplitude));
mbed_official 130:1dec54e4aec3 199 assert_param(IS_DAC_OUTPUT_BUFFER_STATE(DAC_InitStruct->DAC_OutputBuffer));
mbed_official 130:1dec54e4aec3 200
mbed_official 130:1dec54e4aec3 201 /*---------------------------- DAC CR Configuration --------------------------*/
mbed_official 130:1dec54e4aec3 202 /* Get the DAC CR value */
mbed_official 130:1dec54e4aec3 203 tmpreg1 = DAC->CR;
mbed_official 130:1dec54e4aec3 204 /* Clear BOFFx, TENx, TSELx, WAVEx and MAMPx bits */
mbed_official 130:1dec54e4aec3 205 tmpreg1 &= ~(CR_CLEAR_MASK << DAC_Channel);
mbed_official 130:1dec54e4aec3 206 /* Configure for the selected DAC channel: buffer output, trigger,
mbed_official 130:1dec54e4aec3 207 wave generation, mask/amplitude for wave generation */
mbed_official 130:1dec54e4aec3 208 /* Set TSELx and TENx bits according to DAC_Trigger value */
mbed_official 130:1dec54e4aec3 209 /* Set WAVEx bits according to DAC_WaveGeneration value */
mbed_official 130:1dec54e4aec3 210 /* Set MAMPx bits according to DAC_LFSRUnmask_TriangleAmplitude value */
mbed_official 130:1dec54e4aec3 211 /* Set BOFFx bit according to DAC_OutputBuffer value */
mbed_official 130:1dec54e4aec3 212 tmpreg2 = (DAC_InitStruct->DAC_Trigger | DAC_InitStruct->DAC_WaveGeneration |
mbed_official 130:1dec54e4aec3 213 DAC_InitStruct->DAC_LFSRUnmask_TriangleAmplitude | \
mbed_official 130:1dec54e4aec3 214 DAC_InitStruct->DAC_OutputBuffer);
mbed_official 130:1dec54e4aec3 215 /* Calculate CR register value depending on DAC_Channel */
mbed_official 130:1dec54e4aec3 216 tmpreg1 |= tmpreg2 << DAC_Channel;
mbed_official 130:1dec54e4aec3 217 /* Write to DAC CR */
mbed_official 130:1dec54e4aec3 218 DAC->CR = tmpreg1;
mbed_official 130:1dec54e4aec3 219 }
mbed_official 130:1dec54e4aec3 220
mbed_official 130:1dec54e4aec3 221 /**
mbed_official 130:1dec54e4aec3 222 * @brief Fills each DAC_InitStruct member with its default value.
mbed_official 130:1dec54e4aec3 223 * @param DAC_InitStruct: pointer to a DAC_InitTypeDef structure which will
mbed_official 130:1dec54e4aec3 224 * be initialized.
mbed_official 130:1dec54e4aec3 225 * @retval None
mbed_official 130:1dec54e4aec3 226 */
mbed_official 130:1dec54e4aec3 227 void DAC_StructInit(DAC_InitTypeDef* DAC_InitStruct)
mbed_official 130:1dec54e4aec3 228 {
mbed_official 130:1dec54e4aec3 229 /*--------------- Reset DAC init structure parameters values -----------------*/
mbed_official 130:1dec54e4aec3 230 /* Initialize the DAC_Trigger member */
mbed_official 130:1dec54e4aec3 231 DAC_InitStruct->DAC_Trigger = DAC_Trigger_None;
mbed_official 130:1dec54e4aec3 232
mbed_official 130:1dec54e4aec3 233 /* Initialize the DAC_WaveGeneration member */
mbed_official 130:1dec54e4aec3 234 DAC_InitStruct->DAC_WaveGeneration = DAC_WaveGeneration_None;
mbed_official 130:1dec54e4aec3 235
mbed_official 130:1dec54e4aec3 236 /* Initialize the DAC_LFSRUnmask_TriangleAmplitude member */
mbed_official 130:1dec54e4aec3 237 DAC_InitStruct->DAC_LFSRUnmask_TriangleAmplitude = DAC_LFSRUnmask_Bit0;
mbed_official 130:1dec54e4aec3 238
mbed_official 130:1dec54e4aec3 239 /* Initialize the DAC_OutputBuffer member */
mbed_official 130:1dec54e4aec3 240 DAC_InitStruct->DAC_OutputBuffer = DAC_OutputBuffer_Enable;
mbed_official 130:1dec54e4aec3 241 }
mbed_official 130:1dec54e4aec3 242
mbed_official 130:1dec54e4aec3 243 /**
mbed_official 130:1dec54e4aec3 244 * @brief Enables or disables the specified DAC channel.
mbed_official 130:1dec54e4aec3 245 * @param DAC_Channel: The selected DAC channel.
mbed_official 130:1dec54e4aec3 246 * This parameter can be one of the following values:
mbed_official 130:1dec54e4aec3 247 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 130:1dec54e4aec3 248 * @arg DAC_Channel_2: DAC Channel2 selected, applicable only for STM32F072 devices
mbed_official 130:1dec54e4aec3 249 * @param NewState: new state of the DAC channel.
mbed_official 130:1dec54e4aec3 250 * This parameter can be: ENABLE or DISABLE.
mbed_official 130:1dec54e4aec3 251 * @note When the DAC channel is enabled the trigger source can no more be modified.
mbed_official 130:1dec54e4aec3 252 * @retval None
mbed_official 130:1dec54e4aec3 253 */
mbed_official 130:1dec54e4aec3 254 void DAC_Cmd(uint32_t DAC_Channel, FunctionalState NewState)
mbed_official 130:1dec54e4aec3 255 {
mbed_official 130:1dec54e4aec3 256 /* Check the parameters */
mbed_official 130:1dec54e4aec3 257 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 130:1dec54e4aec3 258 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 130:1dec54e4aec3 259
mbed_official 130:1dec54e4aec3 260 if (NewState != DISABLE)
mbed_official 130:1dec54e4aec3 261 {
mbed_official 130:1dec54e4aec3 262 /* Enable the selected DAC channel */
mbed_official 130:1dec54e4aec3 263 DAC->CR |= (DAC_CR_EN1 << DAC_Channel);
mbed_official 130:1dec54e4aec3 264 }
mbed_official 130:1dec54e4aec3 265 else
mbed_official 130:1dec54e4aec3 266 {
mbed_official 130:1dec54e4aec3 267 /* Disable the selected DAC channel */
mbed_official 130:1dec54e4aec3 268 DAC->CR &= (~(DAC_CR_EN1 << DAC_Channel));
mbed_official 130:1dec54e4aec3 269 }
mbed_official 130:1dec54e4aec3 270 }
mbed_official 130:1dec54e4aec3 271
mbed_official 130:1dec54e4aec3 272 /**
mbed_official 130:1dec54e4aec3 273 * @brief Enables or disables the selected DAC channel software trigger.
mbed_official 130:1dec54e4aec3 274 * @param DAC_Channel: The selected DAC channel.
mbed_official 130:1dec54e4aec3 275 * This parameter can be one of the following values:
mbed_official 130:1dec54e4aec3 276 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 130:1dec54e4aec3 277 * @arg DAC_Channel_2: DAC Channel2 selected, applicable only for STM32F072 devices
mbed_official 130:1dec54e4aec3 278 * @param NewState: new state of the selected DAC channel software trigger.
mbed_official 130:1dec54e4aec3 279 * This parameter can be: ENABLE or DISABLE.
mbed_official 130:1dec54e4aec3 280 * @retval None
mbed_official 130:1dec54e4aec3 281 */
mbed_official 130:1dec54e4aec3 282 void DAC_SoftwareTriggerCmd(uint32_t DAC_Channel, FunctionalState NewState)
mbed_official 130:1dec54e4aec3 283 {
mbed_official 130:1dec54e4aec3 284 /* Check the parameters */
mbed_official 130:1dec54e4aec3 285 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 130:1dec54e4aec3 286 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 130:1dec54e4aec3 287
mbed_official 130:1dec54e4aec3 288 if (NewState != DISABLE)
mbed_official 130:1dec54e4aec3 289 {
mbed_official 130:1dec54e4aec3 290 /* Enable software trigger for the selected DAC channel */
mbed_official 130:1dec54e4aec3 291 DAC->SWTRIGR |= (uint32_t)DAC_SWTRIGR_SWTRIG1 << (DAC_Channel >> 4);
mbed_official 130:1dec54e4aec3 292 }
mbed_official 130:1dec54e4aec3 293 else
mbed_official 130:1dec54e4aec3 294 {
mbed_official 130:1dec54e4aec3 295 /* Disable software trigger for the selected DAC channel */
mbed_official 130:1dec54e4aec3 296 DAC->SWTRIGR &= ~((uint32_t)DAC_SWTRIGR_SWTRIG1 << (DAC_Channel >> 4));
mbed_official 130:1dec54e4aec3 297 }
mbed_official 130:1dec54e4aec3 298 }
mbed_official 130:1dec54e4aec3 299
mbed_official 130:1dec54e4aec3 300 /**
mbed_official 130:1dec54e4aec3 301 * @brief Enables or disables simultaneously the two DAC channels software triggers.
mbed_official 130:1dec54e4aec3 302 * This function is applicable only for STM32F072 devices.
mbed_official 130:1dec54e4aec3 303 * @param NewState: new state of the DAC channels software triggers.
mbed_official 130:1dec54e4aec3 304 * This parameter can be: ENABLE or DISABLE.
mbed_official 130:1dec54e4aec3 305 * @retval None
mbed_official 130:1dec54e4aec3 306 */
mbed_official 130:1dec54e4aec3 307 void DAC_DualSoftwareTriggerCmd(FunctionalState NewState)
mbed_official 130:1dec54e4aec3 308 {
mbed_official 130:1dec54e4aec3 309 /* Check the parameters */
mbed_official 130:1dec54e4aec3 310 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 130:1dec54e4aec3 311
mbed_official 130:1dec54e4aec3 312 if (NewState != DISABLE)
mbed_official 130:1dec54e4aec3 313 {
mbed_official 130:1dec54e4aec3 314 /* Enable software trigger for both DAC channels */
mbed_official 130:1dec54e4aec3 315 DAC->SWTRIGR |= DUAL_SWTRIG_SET;
mbed_official 130:1dec54e4aec3 316 }
mbed_official 130:1dec54e4aec3 317 else
mbed_official 130:1dec54e4aec3 318 {
mbed_official 130:1dec54e4aec3 319 /* Disable software trigger for both DAC channels */
mbed_official 130:1dec54e4aec3 320 DAC->SWTRIGR &= DUAL_SWTRIG_RESET;
mbed_official 130:1dec54e4aec3 321 }
mbed_official 130:1dec54e4aec3 322 }
mbed_official 130:1dec54e4aec3 323
mbed_official 130:1dec54e4aec3 324 /**
mbed_official 130:1dec54e4aec3 325 * @brief Enables or disables the selected DAC channel wave generation.
mbed_official 130:1dec54e4aec3 326 * This function is applicable only for STM32F072 devices.
mbed_official 130:1dec54e4aec3 327 * @param DAC_Channel: The selected DAC channel.
mbed_official 130:1dec54e4aec3 328 * This parameter can be:
mbed_official 130:1dec54e4aec3 329 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 130:1dec54e4aec3 330 * @arg DAC_Channel_2: DAC Channel2 selected
mbed_official 130:1dec54e4aec3 331 * @param DAC_Wave: specifies the wave type to enable or disable.
mbed_official 130:1dec54e4aec3 332 * This parameter can be:
mbed_official 130:1dec54e4aec3 333 * @arg DAC_Wave_Noise: noise wave generation
mbed_official 130:1dec54e4aec3 334 * @arg DAC_Wave_Triangle: triangle wave generation
mbed_official 130:1dec54e4aec3 335 * @param NewState: new state of the selected DAC channel wave generation.
mbed_official 130:1dec54e4aec3 336 * This parameter can be: ENABLE or DISABLE.
mbed_official 130:1dec54e4aec3 337 * @retval None
mbed_official 130:1dec54e4aec3 338 */
mbed_official 130:1dec54e4aec3 339 void DAC_WaveGenerationCmd(uint32_t DAC_Channel, uint32_t DAC_Wave, FunctionalState NewState)
mbed_official 130:1dec54e4aec3 340 {
mbed_official 130:1dec54e4aec3 341 /* Check the parameters */
mbed_official 130:1dec54e4aec3 342 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 130:1dec54e4aec3 343 assert_param(IS_DAC_WAVE(DAC_Wave));
mbed_official 130:1dec54e4aec3 344 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 130:1dec54e4aec3 345
mbed_official 130:1dec54e4aec3 346 if (NewState != DISABLE)
mbed_official 130:1dec54e4aec3 347 {
mbed_official 130:1dec54e4aec3 348 /* Enable the selected wave generation for the selected DAC channel */
mbed_official 130:1dec54e4aec3 349 DAC->CR |= DAC_Wave << DAC_Channel;
mbed_official 130:1dec54e4aec3 350 }
mbed_official 130:1dec54e4aec3 351 else
mbed_official 130:1dec54e4aec3 352 {
mbed_official 130:1dec54e4aec3 353 /* Disable the selected wave generation for the selected DAC channel */
mbed_official 130:1dec54e4aec3 354 DAC->CR &= ~(DAC_Wave << DAC_Channel);
mbed_official 130:1dec54e4aec3 355 }
mbed_official 130:1dec54e4aec3 356 }
mbed_official 130:1dec54e4aec3 357
mbed_official 130:1dec54e4aec3 358 /**
mbed_official 130:1dec54e4aec3 359 * @brief Set the specified data holding register value for DAC channel1.
mbed_official 130:1dec54e4aec3 360 * @param DAC_Align: Specifies the data alignment for DAC channel1.
mbed_official 130:1dec54e4aec3 361 * This parameter can be one of the following values:
mbed_official 130:1dec54e4aec3 362 * @arg DAC_Align_8b_R: 8bit right data alignment selected
mbed_official 130:1dec54e4aec3 363 * @arg DAC_Align_12b_L: 12bit left data alignment selected
mbed_official 130:1dec54e4aec3 364 * @arg DAC_Align_12b_R: 12bit right data alignment selected
mbed_official 130:1dec54e4aec3 365 * @param Data: Data to be loaded in the selected data holding register.
mbed_official 130:1dec54e4aec3 366 * @retval None
mbed_official 130:1dec54e4aec3 367 */
mbed_official 130:1dec54e4aec3 368 void DAC_SetChannel1Data(uint32_t DAC_Align, uint16_t Data)
mbed_official 130:1dec54e4aec3 369 {
mbed_official 130:1dec54e4aec3 370 __IO uint32_t tmp = 0;
mbed_official 130:1dec54e4aec3 371
mbed_official 130:1dec54e4aec3 372 /* Check the parameters */
mbed_official 130:1dec54e4aec3 373 assert_param(IS_DAC_ALIGN(DAC_Align));
mbed_official 130:1dec54e4aec3 374 assert_param(IS_DAC_DATA(Data));
mbed_official 130:1dec54e4aec3 375
mbed_official 130:1dec54e4aec3 376 tmp = (uint32_t)DAC_BASE;
mbed_official 130:1dec54e4aec3 377 tmp += DHR12R1_OFFSET + DAC_Align;
mbed_official 130:1dec54e4aec3 378
mbed_official 130:1dec54e4aec3 379 /* Set the DAC channel1 selected data holding register */
mbed_official 130:1dec54e4aec3 380 *(__IO uint32_t *) tmp = Data;
mbed_official 130:1dec54e4aec3 381 }
mbed_official 130:1dec54e4aec3 382
mbed_official 130:1dec54e4aec3 383 /**
mbed_official 130:1dec54e4aec3 384 * @brief Sets the specified data holding register value for DAC channel2.
mbed_official 130:1dec54e4aec3 385 * This function is applicable only for STM32F072 devices.
mbed_official 130:1dec54e4aec3 386 * @param DAC_Align: Specifies the data alignment for DAC channel2.
mbed_official 130:1dec54e4aec3 387 * This parameter can be:
mbed_official 130:1dec54e4aec3 388 * @arg DAC_Align_8b_R: 8bit right data alignment selected
mbed_official 130:1dec54e4aec3 389 * @arg DAC_Align_12b_L: 12bit left data alignment selected
mbed_official 130:1dec54e4aec3 390 * @arg DAC_Align_12b_R: 12bit right data alignment selected
mbed_official 130:1dec54e4aec3 391 * @param Data: Data to be loaded in the selected data holding register.
mbed_official 130:1dec54e4aec3 392 * @retval None
mbed_official 130:1dec54e4aec3 393 */
mbed_official 130:1dec54e4aec3 394 void DAC_SetChannel2Data(uint32_t DAC_Align, uint16_t Data)
mbed_official 130:1dec54e4aec3 395 {
mbed_official 130:1dec54e4aec3 396 __IO uint32_t tmp = 0;
mbed_official 130:1dec54e4aec3 397
mbed_official 130:1dec54e4aec3 398 /* Check the parameters */
mbed_official 130:1dec54e4aec3 399 assert_param(IS_DAC_ALIGN(DAC_Align));
mbed_official 130:1dec54e4aec3 400 assert_param(IS_DAC_DATA(Data));
mbed_official 130:1dec54e4aec3 401
mbed_official 130:1dec54e4aec3 402 tmp = (uint32_t)DAC_BASE;
mbed_official 130:1dec54e4aec3 403 tmp += DHR12R2_OFFSET + DAC_Align;
mbed_official 130:1dec54e4aec3 404
mbed_official 130:1dec54e4aec3 405 /* Set the DAC channel2 selected data holding register */
mbed_official 130:1dec54e4aec3 406 *(__IO uint32_t *)tmp = Data;
mbed_official 130:1dec54e4aec3 407 }
mbed_official 130:1dec54e4aec3 408
mbed_official 130:1dec54e4aec3 409 /**
mbed_official 130:1dec54e4aec3 410 * @brief Sets the specified data holding register value for dual channel DAC.
mbed_official 130:1dec54e4aec3 411 * This function is applicable only for STM32F072 devices.
mbed_official 130:1dec54e4aec3 412 * @param DAC_Align: Specifies the data alignment for dual channel DAC.
mbed_official 130:1dec54e4aec3 413 * This parameter can be:
mbed_official 130:1dec54e4aec3 414 * @arg DAC_Align_8b_R: 8bit right data alignment selected
mbed_official 130:1dec54e4aec3 415 * @arg DAC_Align_12b_L: 12bit left data alignment selected
mbed_official 130:1dec54e4aec3 416 * @arg DAC_Align_12b_R: 12bit right data alignment selected
mbed_official 130:1dec54e4aec3 417 * @param Data2: Data for DAC Channel2 to be loaded in the selected data holding register.
mbed_official 130:1dec54e4aec3 418 * @param Data1: Data for DAC Channel1 to be loaded in the selected data holding register.
mbed_official 130:1dec54e4aec3 419 * @note In dual mode, a unique register access is required to write in both
mbed_official 130:1dec54e4aec3 420 * DAC channels at the same time.
mbed_official 130:1dec54e4aec3 421 * @retval None
mbed_official 130:1dec54e4aec3 422 */
mbed_official 130:1dec54e4aec3 423 void DAC_SetDualChannelData(uint32_t DAC_Align, uint16_t Data2, uint16_t Data1)
mbed_official 130:1dec54e4aec3 424 {
mbed_official 130:1dec54e4aec3 425 uint32_t data = 0, tmp = 0;
mbed_official 130:1dec54e4aec3 426
mbed_official 130:1dec54e4aec3 427 /* Check the parameters */
mbed_official 130:1dec54e4aec3 428 assert_param(IS_DAC_ALIGN(DAC_Align));
mbed_official 130:1dec54e4aec3 429 assert_param(IS_DAC_DATA(Data1));
mbed_official 130:1dec54e4aec3 430 assert_param(IS_DAC_DATA(Data2));
mbed_official 130:1dec54e4aec3 431
mbed_official 130:1dec54e4aec3 432 /* Calculate and set dual DAC data holding register value */
mbed_official 130:1dec54e4aec3 433 if (DAC_Align == DAC_Align_8b_R)
mbed_official 130:1dec54e4aec3 434 {
mbed_official 130:1dec54e4aec3 435 data = ((uint32_t)Data2 << 8) | Data1;
mbed_official 130:1dec54e4aec3 436 }
mbed_official 130:1dec54e4aec3 437 else
mbed_official 130:1dec54e4aec3 438 {
mbed_official 130:1dec54e4aec3 439 data = ((uint32_t)Data2 << 16) | Data1;
mbed_official 130:1dec54e4aec3 440 }
mbed_official 130:1dec54e4aec3 441
mbed_official 130:1dec54e4aec3 442 tmp = (uint32_t)DAC_BASE;
mbed_official 130:1dec54e4aec3 443 tmp += DHR12RD_OFFSET + DAC_Align;
mbed_official 130:1dec54e4aec3 444
mbed_official 130:1dec54e4aec3 445 /* Set the dual DAC selected data holding register */
mbed_official 130:1dec54e4aec3 446 *(__IO uint32_t *)tmp = data;
mbed_official 130:1dec54e4aec3 447 }
mbed_official 130:1dec54e4aec3 448
mbed_official 130:1dec54e4aec3 449 /**
mbed_official 130:1dec54e4aec3 450 * @brief Returns the last data output value of the selected DAC channel.
mbed_official 130:1dec54e4aec3 451 * @param DAC_Channel: The selected DAC channel.
mbed_official 130:1dec54e4aec3 452 * This parameter can be one of the following values:
mbed_official 130:1dec54e4aec3 453 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 130:1dec54e4aec3 454 * @arg DAC_Channel_2: DAC Channel2 selected, applicable only for STM32F072 devices
mbed_official 130:1dec54e4aec3 455 * @retval The selected DAC channel data output value.
mbed_official 130:1dec54e4aec3 456 */
mbed_official 130:1dec54e4aec3 457 uint16_t DAC_GetDataOutputValue(uint32_t DAC_Channel)
mbed_official 130:1dec54e4aec3 458 {
mbed_official 130:1dec54e4aec3 459 __IO uint32_t tmp = 0;
mbed_official 130:1dec54e4aec3 460
mbed_official 130:1dec54e4aec3 461 /* Check the parameters */
mbed_official 130:1dec54e4aec3 462 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 130:1dec54e4aec3 463
mbed_official 130:1dec54e4aec3 464 tmp = (uint32_t) DAC_BASE ;
mbed_official 130:1dec54e4aec3 465 tmp += DOR_OFFSET + ((uint32_t)DAC_Channel >> 2);
mbed_official 130:1dec54e4aec3 466
mbed_official 130:1dec54e4aec3 467 /* Returns the DAC channel data output register value */
mbed_official 130:1dec54e4aec3 468 return (uint16_t) (*(__IO uint32_t*) tmp);
mbed_official 130:1dec54e4aec3 469 }
mbed_official 130:1dec54e4aec3 470
mbed_official 130:1dec54e4aec3 471 /**
mbed_official 130:1dec54e4aec3 472 * @}
mbed_official 130:1dec54e4aec3 473 */
mbed_official 130:1dec54e4aec3 474
mbed_official 130:1dec54e4aec3 475 /** @defgroup DAC_Group2 DMA management functions
mbed_official 130:1dec54e4aec3 476 * @brief DMA management functions
mbed_official 130:1dec54e4aec3 477 *
mbed_official 130:1dec54e4aec3 478 @verbatim
mbed_official 130:1dec54e4aec3 479 ===============================================================================
mbed_official 130:1dec54e4aec3 480 ##### DMA management functions #####
mbed_official 130:1dec54e4aec3 481 ===============================================================================
mbed_official 130:1dec54e4aec3 482
mbed_official 130:1dec54e4aec3 483 @endverbatim
mbed_official 130:1dec54e4aec3 484 * @{
mbed_official 130:1dec54e4aec3 485 */
mbed_official 130:1dec54e4aec3 486
mbed_official 130:1dec54e4aec3 487 /**
mbed_official 130:1dec54e4aec3 488 * @brief Enables or disables the specified DAC channel DMA request.
mbed_official 130:1dec54e4aec3 489 * When enabled DMA1 is generated when an external trigger (EXTI Line9,
mbed_official 130:1dec54e4aec3 490 * TIM2, TIM3, TIM6 or TIM15 but not a software trigger) occurs
mbed_official 130:1dec54e4aec3 491 * @param DAC_Channel: the selected DAC channel.
mbed_official 130:1dec54e4aec3 492 * This parameter can be one of the following values:
mbed_official 130:1dec54e4aec3 493 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 130:1dec54e4aec3 494 * @arg DAC_Channel_2: DAC Channel2 selected, applicable only for STM32F072 devices
mbed_official 130:1dec54e4aec3 495 * @param NewState: new state of the selected DAC channel DMA request.
mbed_official 130:1dec54e4aec3 496 * This parameter can be: ENABLE or DISABLE.
mbed_official 130:1dec54e4aec3 497 * @note The DAC channel1 is mapped on DMA1 channel3 which must be already configured.
mbed_official 130:1dec54e4aec3 498 * @note The DAC channel2 is mapped on DMA1 channel4 which must be already configured.
mbed_official 130:1dec54e4aec3 499 * @retval None
mbed_official 130:1dec54e4aec3 500 */
mbed_official 130:1dec54e4aec3 501 void DAC_DMACmd(uint32_t DAC_Channel, FunctionalState NewState)
mbed_official 130:1dec54e4aec3 502 {
mbed_official 130:1dec54e4aec3 503 /* Check the parameters */
mbed_official 130:1dec54e4aec3 504 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 130:1dec54e4aec3 505 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 130:1dec54e4aec3 506
mbed_official 130:1dec54e4aec3 507 if (NewState != DISABLE)
mbed_official 130:1dec54e4aec3 508 {
mbed_official 130:1dec54e4aec3 509 /* Enable the selected DAC channel DMA request */
mbed_official 130:1dec54e4aec3 510 DAC->CR |= (DAC_CR_DMAEN1 << DAC_Channel);
mbed_official 130:1dec54e4aec3 511 }
mbed_official 130:1dec54e4aec3 512 else
mbed_official 130:1dec54e4aec3 513 {
mbed_official 130:1dec54e4aec3 514 /* Disable the selected DAC channel DMA request */
mbed_official 130:1dec54e4aec3 515 DAC->CR &= (~(DAC_CR_DMAEN1 << DAC_Channel));
mbed_official 130:1dec54e4aec3 516 }
mbed_official 130:1dec54e4aec3 517 }
mbed_official 130:1dec54e4aec3 518
mbed_official 130:1dec54e4aec3 519 /**
mbed_official 130:1dec54e4aec3 520 * @}
mbed_official 130:1dec54e4aec3 521 */
mbed_official 130:1dec54e4aec3 522
mbed_official 130:1dec54e4aec3 523 /** @defgroup DAC_Group3 Interrupts and flags management functions
mbed_official 130:1dec54e4aec3 524 * @brief Interrupts and flags management functions
mbed_official 130:1dec54e4aec3 525 *
mbed_official 130:1dec54e4aec3 526 @verbatim
mbed_official 130:1dec54e4aec3 527 ===============================================================================
mbed_official 130:1dec54e4aec3 528 ##### Interrupts and flags management functions #####
mbed_official 130:1dec54e4aec3 529 ===============================================================================
mbed_official 130:1dec54e4aec3 530
mbed_official 130:1dec54e4aec3 531 @endverbatim
mbed_official 130:1dec54e4aec3 532 * @{
mbed_official 130:1dec54e4aec3 533 */
mbed_official 130:1dec54e4aec3 534
mbed_official 130:1dec54e4aec3 535 /**
mbed_official 130:1dec54e4aec3 536 * @brief Enables or disables the specified DAC interrupts.
mbed_official 130:1dec54e4aec3 537 * @param DAC_Channel: The selected DAC channel.
mbed_official 130:1dec54e4aec3 538 * This parameter can be:
mbed_official 130:1dec54e4aec3 539 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 130:1dec54e4aec3 540 * @arg DAC_Channel_2: DAC Channel2 selected, applicable only for STM32F072 devices
mbed_official 130:1dec54e4aec3 541 * @param DAC_IT: specifies the DAC interrupt sources to be enabled or disabled.
mbed_official 130:1dec54e4aec3 542 * This parameter can be the following values:
mbed_official 130:1dec54e4aec3 543 * @arg DAC_IT_DMAUDR: DMA underrun interrupt mask
mbed_official 130:1dec54e4aec3 544 * @note The DMA underrun occurs when a second external trigger arrives before the
mbed_official 130:1dec54e4aec3 545 * acknowledgement for the first external trigger is received (first request).
mbed_official 130:1dec54e4aec3 546 * @param NewState: new state of the specified DAC interrupts.
mbed_official 130:1dec54e4aec3 547 * This parameter can be: ENABLE or DISABLE.
mbed_official 130:1dec54e4aec3 548 * @retval None
mbed_official 130:1dec54e4aec3 549 */
mbed_official 130:1dec54e4aec3 550 void DAC_ITConfig(uint32_t DAC_Channel, uint32_t DAC_IT, FunctionalState NewState)
mbed_official 130:1dec54e4aec3 551 {
mbed_official 130:1dec54e4aec3 552 /* Check the parameters */
mbed_official 130:1dec54e4aec3 553 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 130:1dec54e4aec3 554 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 130:1dec54e4aec3 555 assert_param(IS_DAC_IT(DAC_IT));
mbed_official 130:1dec54e4aec3 556
mbed_official 130:1dec54e4aec3 557 if (NewState != DISABLE)
mbed_official 130:1dec54e4aec3 558 {
mbed_official 130:1dec54e4aec3 559 /* Enable the selected DAC interrupts */
mbed_official 130:1dec54e4aec3 560 DAC->CR |= (DAC_IT << DAC_Channel);
mbed_official 130:1dec54e4aec3 561 }
mbed_official 130:1dec54e4aec3 562 else
mbed_official 130:1dec54e4aec3 563 {
mbed_official 130:1dec54e4aec3 564 /* Disable the selected DAC interrupts */
mbed_official 130:1dec54e4aec3 565 DAC->CR &= (~(uint32_t)(DAC_IT << DAC_Channel));
mbed_official 130:1dec54e4aec3 566 }
mbed_official 130:1dec54e4aec3 567 }
mbed_official 130:1dec54e4aec3 568
mbed_official 130:1dec54e4aec3 569 /**
mbed_official 130:1dec54e4aec3 570 * @brief Checks whether the specified DAC flag is set or not.
mbed_official 130:1dec54e4aec3 571 * @param DAC_Channel: The selected DAC channel.
mbed_official 130:1dec54e4aec3 572 * This parameter can be one of the following values:
mbed_official 130:1dec54e4aec3 573 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 130:1dec54e4aec3 574 * @arg DAC_Channel_2: DAC Channel2 selected, applicable only for STM32F072 devices
mbed_official 130:1dec54e4aec3 575 * @param DAC_FLAG: specifies the flag to check.
mbed_official 130:1dec54e4aec3 576 * This parameter can be only of the following value:
mbed_official 130:1dec54e4aec3 577 * @arg DAC_FLAG_DMAUDR: DMA underrun flag
mbed_official 130:1dec54e4aec3 578 * @note The DMA underrun occurs when a second external trigger arrives before the
mbed_official 130:1dec54e4aec3 579 * acknowledgement for the first external trigger is received (first request).
mbed_official 130:1dec54e4aec3 580 * @retval The new state of DAC_FLAG (SET or RESET).
mbed_official 130:1dec54e4aec3 581 */
mbed_official 130:1dec54e4aec3 582 FlagStatus DAC_GetFlagStatus(uint32_t DAC_Channel, uint32_t DAC_FLAG)
mbed_official 130:1dec54e4aec3 583 {
mbed_official 130:1dec54e4aec3 584 FlagStatus bitstatus = RESET;
mbed_official 130:1dec54e4aec3 585 /* Check the parameters */
mbed_official 130:1dec54e4aec3 586 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 130:1dec54e4aec3 587 assert_param(IS_DAC_FLAG(DAC_FLAG));
mbed_official 130:1dec54e4aec3 588
mbed_official 130:1dec54e4aec3 589 /* Check the status of the specified DAC flag */
mbed_official 130:1dec54e4aec3 590 if ((DAC->SR & (DAC_FLAG << DAC_Channel)) != (uint8_t)RESET)
mbed_official 130:1dec54e4aec3 591 {
mbed_official 130:1dec54e4aec3 592 /* DAC_FLAG is set */
mbed_official 130:1dec54e4aec3 593 bitstatus = SET;
mbed_official 130:1dec54e4aec3 594 }
mbed_official 130:1dec54e4aec3 595 else
mbed_official 130:1dec54e4aec3 596 {
mbed_official 130:1dec54e4aec3 597 /* DAC_FLAG is reset */
mbed_official 130:1dec54e4aec3 598 bitstatus = RESET;
mbed_official 130:1dec54e4aec3 599 }
mbed_official 130:1dec54e4aec3 600 /* Return the DAC_FLAG status */
mbed_official 130:1dec54e4aec3 601 return bitstatus;
mbed_official 130:1dec54e4aec3 602 }
mbed_official 130:1dec54e4aec3 603
mbed_official 130:1dec54e4aec3 604 /**
mbed_official 130:1dec54e4aec3 605 * @brief Clears the DAC channel's pending flags.
mbed_official 130:1dec54e4aec3 606 * @param DAC_Channel: The selected DAC channel.
mbed_official 130:1dec54e4aec3 607 * This parameter can be one of the following values:
mbed_official 130:1dec54e4aec3 608 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 130:1dec54e4aec3 609 * @arg DAC_Channel_2: DAC Channel2 selected, applicable only for STM32F072 devices
mbed_official 130:1dec54e4aec3 610 * @param DAC_FLAG: specifies the flag to clear.
mbed_official 130:1dec54e4aec3 611 * This parameter can be of the following value:
mbed_official 130:1dec54e4aec3 612 * @arg DAC_FLAG_DMAUDR: DMA underrun flag
mbed_official 130:1dec54e4aec3 613 * @retval None
mbed_official 130:1dec54e4aec3 614 */
mbed_official 130:1dec54e4aec3 615 void DAC_ClearFlag(uint32_t DAC_Channel, uint32_t DAC_FLAG)
mbed_official 130:1dec54e4aec3 616 {
mbed_official 130:1dec54e4aec3 617 /* Check the parameters */
mbed_official 130:1dec54e4aec3 618 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 130:1dec54e4aec3 619 assert_param(IS_DAC_FLAG(DAC_FLAG));
mbed_official 130:1dec54e4aec3 620
mbed_official 130:1dec54e4aec3 621 /* Clear the selected DAC flags */
mbed_official 130:1dec54e4aec3 622 DAC->SR = (DAC_FLAG << DAC_Channel);
mbed_official 130:1dec54e4aec3 623 }
mbed_official 130:1dec54e4aec3 624
mbed_official 130:1dec54e4aec3 625 /**
mbed_official 130:1dec54e4aec3 626 * @brief Checks whether the specified DAC interrupt has occurred or not.
mbed_official 130:1dec54e4aec3 627 * @param DAC_Channel: The selected DAC channel.
mbed_official 130:1dec54e4aec3 628 * This parameter can be one of the following values:
mbed_official 130:1dec54e4aec3 629 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 130:1dec54e4aec3 630 * @arg DAC_Channel_2: DAC Channel2 selected, applicable only for STM32F072 devices
mbed_official 130:1dec54e4aec3 631 * @param DAC_IT: specifies the DAC interrupt source to check.
mbed_official 130:1dec54e4aec3 632 * This parameter can be the following values:
mbed_official 130:1dec54e4aec3 633 * @arg DAC_IT_DMAUDR: DMA underrun interrupt mask
mbed_official 130:1dec54e4aec3 634 * @note The DMA underrun occurs when a second external trigger arrives before the
mbed_official 130:1dec54e4aec3 635 * acknowledgement for the first external trigger is received (first request).
mbed_official 130:1dec54e4aec3 636 * @retval The new state of DAC_IT (SET or RESET).
mbed_official 130:1dec54e4aec3 637 */
mbed_official 130:1dec54e4aec3 638 ITStatus DAC_GetITStatus(uint32_t DAC_Channel, uint32_t DAC_IT)
mbed_official 130:1dec54e4aec3 639 {
mbed_official 130:1dec54e4aec3 640 ITStatus bitstatus = RESET;
mbed_official 130:1dec54e4aec3 641 uint32_t enablestatus = 0;
mbed_official 130:1dec54e4aec3 642
mbed_official 130:1dec54e4aec3 643 /* Check the parameters */
mbed_official 130:1dec54e4aec3 644 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 130:1dec54e4aec3 645 assert_param(IS_DAC_IT(DAC_IT));
mbed_official 130:1dec54e4aec3 646
mbed_official 130:1dec54e4aec3 647 /* Get the DAC_IT enable bit status */
mbed_official 130:1dec54e4aec3 648 enablestatus = (DAC->CR & (DAC_IT << DAC_Channel)) ;
mbed_official 130:1dec54e4aec3 649
mbed_official 130:1dec54e4aec3 650 /* Check the status of the specified DAC interrupt */
mbed_official 130:1dec54e4aec3 651 if (((DAC->SR & (DAC_IT << DAC_Channel)) != (uint32_t)RESET) && enablestatus)
mbed_official 130:1dec54e4aec3 652 {
mbed_official 130:1dec54e4aec3 653 /* DAC_IT is set */
mbed_official 130:1dec54e4aec3 654 bitstatus = SET;
mbed_official 130:1dec54e4aec3 655 }
mbed_official 130:1dec54e4aec3 656 else
mbed_official 130:1dec54e4aec3 657 {
mbed_official 130:1dec54e4aec3 658 /* DAC_IT is reset */
mbed_official 130:1dec54e4aec3 659 bitstatus = RESET;
mbed_official 130:1dec54e4aec3 660 }
mbed_official 130:1dec54e4aec3 661 /* Return the DAC_IT status */
mbed_official 130:1dec54e4aec3 662 return bitstatus;
mbed_official 130:1dec54e4aec3 663 }
mbed_official 130:1dec54e4aec3 664
mbed_official 130:1dec54e4aec3 665 /**
mbed_official 130:1dec54e4aec3 666 * @brief Clears the DAC channel's interrupt pending bits.
mbed_official 130:1dec54e4aec3 667 * @param DAC_Channel: The selected DAC channel.
mbed_official 130:1dec54e4aec3 668 * This parameter can be one of the following values:
mbed_official 130:1dec54e4aec3 669 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 130:1dec54e4aec3 670 * @arg DAC_Channel_2: DAC Channel2 selected, applicable only for STM32F072 devices
mbed_official 130:1dec54e4aec3 671 * @param DAC_IT: specifies the DAC interrupt pending bit to clear.
mbed_official 130:1dec54e4aec3 672 * This parameter can be the following values:
mbed_official 130:1dec54e4aec3 673 * @arg DAC_IT_DMAUDR: DMA underrun interrupt mask
mbed_official 130:1dec54e4aec3 674 * @retval None
mbed_official 130:1dec54e4aec3 675 */
mbed_official 130:1dec54e4aec3 676 void DAC_ClearITPendingBit(uint32_t DAC_Channel, uint32_t DAC_IT)
mbed_official 130:1dec54e4aec3 677 {
mbed_official 130:1dec54e4aec3 678 /* Check the parameters */
mbed_official 130:1dec54e4aec3 679 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 130:1dec54e4aec3 680 assert_param(IS_DAC_IT(DAC_IT));
mbed_official 130:1dec54e4aec3 681
mbed_official 130:1dec54e4aec3 682 /* Clear the selected DAC interrupt pending bits */
mbed_official 130:1dec54e4aec3 683 DAC->SR = (DAC_IT << DAC_Channel);
mbed_official 130:1dec54e4aec3 684 }
mbed_official 130:1dec54e4aec3 685
mbed_official 130:1dec54e4aec3 686 /**
mbed_official 130:1dec54e4aec3 687 * @}
mbed_official 130:1dec54e4aec3 688 */
mbed_official 130:1dec54e4aec3 689
mbed_official 130:1dec54e4aec3 690 /**
mbed_official 130:1dec54e4aec3 691 * @}
mbed_official 130:1dec54e4aec3 692 */
mbed_official 130:1dec54e4aec3 693
mbed_official 130:1dec54e4aec3 694 /**
mbed_official 130:1dec54e4aec3 695 * @}
mbed_official 130:1dec54e4aec3 696 */
mbed_official 130:1dec54e4aec3 697
mbed_official 130:1dec54e4aec3 698 /**
mbed_official 130:1dec54e4aec3 699 * @}
mbed_official 130:1dec54e4aec3 700 */
mbed_official 130:1dec54e4aec3 701
mbed_official 130:1dec54e4aec3 702 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/