shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src by mbed official

targets/cmsis/TARGET_STM/TARGET_DISCO_F303VC/stm32f30x_dac.c@157:90e3acc479a2, 2014-04-11 (annotated)

Committer:
mbed_official
Date:
Fri Apr 11 17:15:06 2014 +0100
Revision:
157:90e3acc479a2
Synchronized with git revision 6e20ca17847dceb62132bf3d8519876411e175bf



Full URL: https://github.com/mbedmicro/mbed/commit/6e20ca17847dceb62132bf3d8519876411e175bf/



[STM32F3-Discovery][DISCO_F303VC] initial port.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 157:90e3acc479a2 1 /**
mbed_official 157:90e3acc479a2 2 ******************************************************************************
mbed_official 157:90e3acc479a2 3 * @file stm32f30x_dac.c
mbed_official 157:90e3acc479a2 4 * @author MCD Application Team
mbed_official 157:90e3acc479a2 5 * @version V1.1.0
mbed_official 157:90e3acc479a2 6 * @date 27-February-2014
mbed_official 157:90e3acc479a2 7 * @brief This file provides firmware functions to manage the following
mbed_official 157:90e3acc479a2 8 * functionalities of the Digital-to-Analog Converter (DAC) peripheral:
mbed_official 157:90e3acc479a2 9 * + DAC channels configuration: trigger, output buffer, data format
mbed_official 157:90e3acc479a2 10 * + DMA management
mbed_official 157:90e3acc479a2 11 * + Interrupts and flags management
mbed_official 157:90e3acc479a2 12 *
mbed_official 157:90e3acc479a2 13 @verbatim
mbed_official 157:90e3acc479a2 14
mbed_official 157:90e3acc479a2 15 ===============================================================================
mbed_official 157:90e3acc479a2 16 ##### DAC Peripheral features #####
mbed_official 157:90e3acc479a2 17 ===============================================================================
mbed_official 157:90e3acc479a2 18 [..] The device integrates two 12-bit Digital Analog Converters that can
mbed_official 157:90e3acc479a2 19 be used independently or simultaneously (dual mode):
mbed_official 157:90e3acc479a2 20 (#) DAC1 integrates two DAC channels:
mbed_official 157:90e3acc479a2 21 (++) DAC1 channel 1 with DAC1_OUT1 as output
mbed_official 157:90e3acc479a2 22 (++) DAC1 channel 2 with DAC1_OUT2 as output
mbed_official 157:90e3acc479a2 23 (++) The two channels can be used independently or simultaneously (dual mode)
mbed_official 157:90e3acc479a2 24
mbed_official 157:90e3acc479a2 25 (#) DAC2 integrates only one channel DAC2 channel 1 with DAC2_OUT1 as output
mbed_official 157:90e3acc479a2 26
mbed_official 157:90e3acc479a2 27 [..] Digital to Analog conversion can be non-triggered using DAC_Trigger_None
mbed_official 157:90e3acc479a2 28 and DAC_OUT1/DAC_OUT2 is available once writing to DHRx register using
mbed_official 157:90e3acc479a2 29 DAC_SetChannel1Data()/DAC_SetChannel2Data.
mbed_official 157:90e3acc479a2 30
mbed_official 157:90e3acc479a2 31 [..] Digital to Analog conversion can be triggered by:
mbed_official 157:90e3acc479a2 32 (#) External event: EXTI Line 9 (any GPIOx_Pin9) using DAC_Trigger_Ext_IT9.
mbed_official 157:90e3acc479a2 33 The used pin (GPIOx_Pin9) must be configured in input mode.
mbed_official 157:90e3acc479a2 34
mbed_official 157:90e3acc479a2 35 (#) Timers TRGO: TIM2, TIM8/TIM3, TIM4, TIM6, TIM7, and TIM15
mbed_official 157:90e3acc479a2 36 (DAC_Trigger_T2_TRGO, DAC_Trigger_T4_TRGO...)
mbed_official 157:90e3acc479a2 37 The timer TRGO event should be selected using TIM_SelectOutputTrigger()
mbed_official 157:90e3acc479a2 38 (++) To trigger DAC conversions by TIM3 instead of TIM8 follow
mbed_official 157:90e3acc479a2 39 this sequence:
mbed_official 157:90e3acc479a2 40 (+++) Enable SYSCFG APB clock by calling
mbed_official 157:90e3acc479a2 41 RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
mbed_official 157:90e3acc479a2 42 (+++) Select DAC_Trigger_T3_TRGO when calling DAC_Init()
mbed_official 157:90e3acc479a2 43 (+++) Remap the DAC trigger from TIM8 to TIM3 by calling
mbed_official 157:90e3acc479a2 44 SYSCFG_TriggerRemapConfig(SYSCFG_TriggerRemap_DACTIM3, ENABLE)
mbed_official 157:90e3acc479a2 45 (#) Software using DAC_Trigger_Software
mbed_official 157:90e3acc479a2 46
mbed_official 157:90e3acc479a2 47 [..] Each DAC channel integrates an output buffer that can be used to
mbed_official 157:90e3acc479a2 48 reduce the output impedance, and to drive external loads directly
mbed_official 157:90e3acc479a2 49 without having to add an external operational amplifier.
mbed_official 157:90e3acc479a2 50 To enable, the output buffer use
mbed_official 157:90e3acc479a2 51 DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Enable;
mbed_official 157:90e3acc479a2 52
mbed_official 157:90e3acc479a2 53 [..] Refer to the device datasheet for more details about output impedance
mbed_official 157:90e3acc479a2 54 value with and without output buffer.
mbed_official 157:90e3acc479a2 55
mbed_official 157:90e3acc479a2 56 [..] Both DAC channels can be used to generate:
mbed_official 157:90e3acc479a2 57 (+) Noise wave using DAC_WaveGeneration_Noise
mbed_official 157:90e3acc479a2 58 (+) Triangle wave using DAC_WaveGeneration_Triangle
mbed_official 157:90e3acc479a2 59
mbed_official 157:90e3acc479a2 60 [..] Wave generation can be disabled using DAC_WaveGeneration_None
mbed_official 157:90e3acc479a2 61
mbed_official 157:90e3acc479a2 62 [..] The DAC data format can be:
mbed_official 157:90e3acc479a2 63 (+) 8-bit right alignment using DAC_Align_8b_R
mbed_official 157:90e3acc479a2 64 (+) 12-bit left alignment using DAC_Align_12b_L
mbed_official 157:90e3acc479a2 65 (+) 12-bit right alignment using DAC_Align_12b_R
mbed_official 157:90e3acc479a2 66
mbed_official 157:90e3acc479a2 67 [..] The analog output voltage on each DAC channel pin is determined
mbed_official 157:90e3acc479a2 68 by the following equation:
mbed_official 157:90e3acc479a2 69 (+) DAC_OUTx = VREF+ * DOR / 4095 with DOR is the Data Output Register.
mbed_official 157:90e3acc479a2 70 VREF+ is the input voltage reference (refer to the device datasheet)
mbed_official 157:90e3acc479a2 71 e.g. To set DAC_OUT1 to 0.7V, use DAC_SetChannel1Data(DAC_Align_12b_R, 868);
mbed_official 157:90e3acc479a2 72 Assuming that VREF+ = 3.3, DAC_OUT1 = (3.3 * 868) / 4095 = 0.7V
mbed_official 157:90e3acc479a2 73
mbed_official 157:90e3acc479a2 74 [..] A DMA1 request can be generated when an external trigger (but not
mbed_official 157:90e3acc479a2 75 a software trigger) occurs if DMA1 requests are enabled using
mbed_official 157:90e3acc479a2 76 DAC_DMACmd()
mbed_official 157:90e3acc479a2 77 DMA1 requests are mapped as following:
mbed_official 157:90e3acc479a2 78 (+) DAC channel1 is mapped on DMA1 channel3 which must be already
mbed_official 157:90e3acc479a2 79 configured
mbed_official 157:90e3acc479a2 80 (+) DAC channel2 is mapped on DMA1 channel4 which must be already
mbed_official 157:90e3acc479a2 81 configured
mbed_official 157:90e3acc479a2 82
mbed_official 157:90e3acc479a2 83 ##### How to use this driver #####
mbed_official 157:90e3acc479a2 84 ===============================================================================
mbed_official 157:90e3acc479a2 85 [..]
mbed_official 157:90e3acc479a2 86 (+) Enable DAC APB1 clock to get write access to DAC registers
mbed_official 157:90e3acc479a2 87 using RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE)
mbed_official 157:90e3acc479a2 88
mbed_official 157:90e3acc479a2 89 (+) Configure DACx_OUTy (DAC1_OUT1: PA4, DAC1_OUT2: PA5, DAC2_OUT1: PA6)
mbed_official 157:90e3acc479a2 90 in analog mode.
mbed_official 157:90e3acc479a2 91
mbed_official 157:90e3acc479a2 92 (+) Configure the DAC channel using DAC_Init()
mbed_official 157:90e3acc479a2 93
mbed_official 157:90e3acc479a2 94 (+) Enable the DAC channel using DAC_Cmd()
mbed_official 157:90e3acc479a2 95
mbed_official 157:90e3acc479a2 96 @endverbatim
mbed_official 157:90e3acc479a2 97
mbed_official 157:90e3acc479a2 98 ******************************************************************************
mbed_official 157:90e3acc479a2 99 * @attention
mbed_official 157:90e3acc479a2 100 *
mbed_official 157:90e3acc479a2 101 * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
mbed_official 157:90e3acc479a2 102 *
mbed_official 157:90e3acc479a2 103 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 157:90e3acc479a2 104 * are permitted provided that the following conditions are met:
mbed_official 157:90e3acc479a2 105 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 157:90e3acc479a2 106 * this list of conditions and the following disclaimer.
mbed_official 157:90e3acc479a2 107 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 157:90e3acc479a2 108 * this list of conditions and the following disclaimer in the documentation
mbed_official 157:90e3acc479a2 109 * and/or other materials provided with the distribution.
mbed_official 157:90e3acc479a2 110 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 157:90e3acc479a2 111 * may be used to endorse or promote products derived from this software
mbed_official 157:90e3acc479a2 112 * without specific prior written permission.
mbed_official 157:90e3acc479a2 113 *
mbed_official 157:90e3acc479a2 114 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 157:90e3acc479a2 115 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 157:90e3acc479a2 116 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 157:90e3acc479a2 117 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 157:90e3acc479a2 118 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 157:90e3acc479a2 119 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 157:90e3acc479a2 120 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 157:90e3acc479a2 121 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 157:90e3acc479a2 122 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 157:90e3acc479a2 123 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 157:90e3acc479a2 124 *
mbed_official 157:90e3acc479a2 125 ******************************************************************************
mbed_official 157:90e3acc479a2 126 */
mbed_official 157:90e3acc479a2 127
mbed_official 157:90e3acc479a2 128
mbed_official 157:90e3acc479a2 129 /* Includes ------------------------------------------------------------------*/
mbed_official 157:90e3acc479a2 130 #include "stm32f30x_dac.h"
mbed_official 157:90e3acc479a2 131 #include "stm32f30x_rcc.h"
mbed_official 157:90e3acc479a2 132
mbed_official 157:90e3acc479a2 133 /** @addtogroup STM32F30x_StdPeriph_Driver
mbed_official 157:90e3acc479a2 134 * @{
mbed_official 157:90e3acc479a2 135 */
mbed_official 157:90e3acc479a2 136
mbed_official 157:90e3acc479a2 137 /** @defgroup DAC
mbed_official 157:90e3acc479a2 138 * @brief DAC driver modules
mbed_official 157:90e3acc479a2 139 * @{
mbed_official 157:90e3acc479a2 140 */
mbed_official 157:90e3acc479a2 141
mbed_official 157:90e3acc479a2 142 /* Private typedef -----------------------------------------------------------*/
mbed_official 157:90e3acc479a2 143 /* Private define ------------------------------------------------------------*/
mbed_official 157:90e3acc479a2 144
mbed_official 157:90e3acc479a2 145 /* CR register Mask */
mbed_official 157:90e3acc479a2 146 #define CR_CLEAR_MASK ((uint32_t)0x00000FFE)
mbed_official 157:90e3acc479a2 147
mbed_official 157:90e3acc479a2 148 /* DAC Dual Channels SWTRIG masks */
mbed_official 157:90e3acc479a2 149 #define DUAL_SWTRIG_SET ((uint32_t)0x00000003)
mbed_official 157:90e3acc479a2 150 #define DUAL_SWTRIG_RESET ((uint32_t)0xFFFFFFFC)
mbed_official 157:90e3acc479a2 151
mbed_official 157:90e3acc479a2 152 /* DHR registers offsets */
mbed_official 157:90e3acc479a2 153 #define DHR12R1_OFFSET ((uint32_t)0x00000008)
mbed_official 157:90e3acc479a2 154 #define DHR12R2_OFFSET ((uint32_t)0x00000014)
mbed_official 157:90e3acc479a2 155 #define DHR12RD_OFFSET ((uint32_t)0x00000020)
mbed_official 157:90e3acc479a2 156
mbed_official 157:90e3acc479a2 157 /* DOR register offset */
mbed_official 157:90e3acc479a2 158 #define DOR_OFFSET ((uint32_t)0x0000002C)
mbed_official 157:90e3acc479a2 159
mbed_official 157:90e3acc479a2 160 /* Private macro -------------------------------------------------------------*/
mbed_official 157:90e3acc479a2 161 /* Private variables ---------------------------------------------------------*/
mbed_official 157:90e3acc479a2 162 /* Private function prototypes -----------------------------------------------*/
mbed_official 157:90e3acc479a2 163 /* Private functions ---------------------------------------------------------*/
mbed_official 157:90e3acc479a2 164
mbed_official 157:90e3acc479a2 165 /** @defgroup DAC_Private_Functions
mbed_official 157:90e3acc479a2 166 * @{
mbed_official 157:90e3acc479a2 167 */
mbed_official 157:90e3acc479a2 168
mbed_official 157:90e3acc479a2 169 /** @defgroup DAC_Group1 DAC channels configuration
mbed_official 157:90e3acc479a2 170 * @brief DAC channels configuration: trigger, output buffer, data format
mbed_official 157:90e3acc479a2 171 *
mbed_official 157:90e3acc479a2 172 @verbatim
mbed_official 157:90e3acc479a2 173 ===============================================================================
mbed_official 157:90e3acc479a2 174 ##### DAC channels configuration: trigger, output buffer, data format #####
mbed_official 157:90e3acc479a2 175 ===============================================================================
mbed_official 157:90e3acc479a2 176
mbed_official 157:90e3acc479a2 177 @endverbatim
mbed_official 157:90e3acc479a2 178 * @{
mbed_official 157:90e3acc479a2 179 */
mbed_official 157:90e3acc479a2 180
mbed_official 157:90e3acc479a2 181 /**
mbed_official 157:90e3acc479a2 182 * @brief Deinitializes the DAC peripheral registers to their default reset values.
mbed_official 157:90e3acc479a2 183 * @param DACx: where x can be 1 or 2 to select the DAC peripheral.
mbed_official 157:90e3acc479a2 184 * @retval None
mbed_official 157:90e3acc479a2 185 */
mbed_official 157:90e3acc479a2 186 void DAC_DeInit(DAC_TypeDef* DACx)
mbed_official 157:90e3acc479a2 187 {
mbed_official 157:90e3acc479a2 188 /* Check the parameters */
mbed_official 157:90e3acc479a2 189 assert_param(IS_DAC_ALL_PERIPH(DACx));
mbed_official 157:90e3acc479a2 190
mbed_official 157:90e3acc479a2 191 if (DACx == DAC1)
mbed_official 157:90e3acc479a2 192 {
mbed_official 157:90e3acc479a2 193 /* Enable DAC1 reset state */
mbed_official 157:90e3acc479a2 194 RCC_APB1PeriphResetCmd(RCC_APB1Periph_DAC1, ENABLE);
mbed_official 157:90e3acc479a2 195 /* Release DAC1 from reset state */
mbed_official 157:90e3acc479a2 196 RCC_APB1PeriphResetCmd(RCC_APB1Periph_DAC1, DISABLE);
mbed_official 157:90e3acc479a2 197 }
mbed_official 157:90e3acc479a2 198 else
mbed_official 157:90e3acc479a2 199 {
mbed_official 157:90e3acc479a2 200 /* Enable DAC2 reset state */
mbed_official 157:90e3acc479a2 201 RCC_APB1PeriphResetCmd(RCC_APB1Periph_DAC2, ENABLE);
mbed_official 157:90e3acc479a2 202 /* Release DAC2 from reset state */
mbed_official 157:90e3acc479a2 203 RCC_APB1PeriphResetCmd(RCC_APB1Periph_DAC2, DISABLE);
mbed_official 157:90e3acc479a2 204 }
mbed_official 157:90e3acc479a2 205 }
mbed_official 157:90e3acc479a2 206
mbed_official 157:90e3acc479a2 207 /**
mbed_official 157:90e3acc479a2 208 * @brief Initializes the DAC peripheral according to the specified
mbed_official 157:90e3acc479a2 209 * parameters in the DAC_InitStruct.
mbed_official 157:90e3acc479a2 210 * @param DACx: where x can be 1 or 2 to select the DAC peripheral.
mbed_official 157:90e3acc479a2 211 * @param DAC_Channel: the selected DAC channel.
mbed_official 157:90e3acc479a2 212 * This parameter can be one of the following values:
mbed_official 157:90e3acc479a2 213 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 157:90e3acc479a2 214 * @arg DAC_Channel_2: DAC Channel2 selected
mbed_official 157:90e3acc479a2 215 * @param DAC_InitStruct: pointer to a DAC_InitTypeDef structure that
mbed_official 157:90e3acc479a2 216 * contains the configuration information for the specified DAC channel.
mbed_official 157:90e3acc479a2 217 * @retval None
mbed_official 157:90e3acc479a2 218 */
mbed_official 157:90e3acc479a2 219 void DAC_Init(DAC_TypeDef* DACx, uint32_t DAC_Channel, DAC_InitTypeDef* DAC_InitStruct)
mbed_official 157:90e3acc479a2 220 {
mbed_official 157:90e3acc479a2 221 uint32_t tmpreg1 = 0, tmpreg2 = 0;
mbed_official 157:90e3acc479a2 222
mbed_official 157:90e3acc479a2 223 /* Check the DAC parameters */
mbed_official 157:90e3acc479a2 224 assert_param(IS_DAC_ALL_PERIPH(DACx));
mbed_official 157:90e3acc479a2 225 assert_param(IS_DAC_TRIGGER(DAC_InitStruct->DAC_Trigger));
mbed_official 157:90e3acc479a2 226 assert_param(IS_DAC_GENERATE_WAVE(DAC_InitStruct->DAC_WaveGeneration));
mbed_official 157:90e3acc479a2 227 assert_param(IS_DAC_LFSR_UNMASK_TRIANGLE_AMPLITUDE(DAC_InitStruct->DAC_LFSRUnmask_TriangleAmplitude));
mbed_official 157:90e3acc479a2 228 assert_param(IS_DAC_BUFFER_SWITCH_STATE(DAC_InitStruct->DAC_Buffer_Switch));
mbed_official 157:90e3acc479a2 229
mbed_official 157:90e3acc479a2 230 /*---------------------------- DAC CR Configuration --------------------------*/
mbed_official 157:90e3acc479a2 231 /* Get the DAC CR value */
mbed_official 157:90e3acc479a2 232 tmpreg1 = DACx->CR;
mbed_official 157:90e3acc479a2 233 /* Clear BOFFx, TENx, TSELx, WAVEx and MAMPx bits */
mbed_official 157:90e3acc479a2 234 tmpreg1 &= ~(CR_CLEAR_MASK << DAC_Channel);
mbed_official 157:90e3acc479a2 235 /* Configure for the selected DAC channel: buffer output, trigger, wave generation,
mbed_official 157:90e3acc479a2 236 mask/amplitude for wave generation */
mbed_official 157:90e3acc479a2 237
mbed_official 157:90e3acc479a2 238 /* Set TSELx and TENx bits according to DAC_Trigger value */
mbed_official 157:90e3acc479a2 239 /* Set WAVEx bits according to DAC_WaveGeneration value */
mbed_official 157:90e3acc479a2 240 /* Set MAMPx bits according to DAC_LFSRUnmask_TriangleAmplitude value */
mbed_official 157:90e3acc479a2 241 /* Set BOFFx OUTENx bit according to DAC_Buffer_Switch value */
mbed_official 157:90e3acc479a2 242 tmpreg2 = (DAC_InitStruct->DAC_Trigger | DAC_InitStruct->DAC_WaveGeneration |
mbed_official 157:90e3acc479a2 243 DAC_InitStruct->DAC_LFSRUnmask_TriangleAmplitude | DAC_InitStruct->DAC_Buffer_Switch);
mbed_official 157:90e3acc479a2 244
mbed_official 157:90e3acc479a2 245 /* Calculate CR register value depending on DAC_Channel */
mbed_official 157:90e3acc479a2 246 tmpreg1 |= tmpreg2 << DAC_Channel;
mbed_official 157:90e3acc479a2 247 /* Write to DAC CR */
mbed_official 157:90e3acc479a2 248 DACx->CR = tmpreg1;
mbed_official 157:90e3acc479a2 249 }
mbed_official 157:90e3acc479a2 250
mbed_official 157:90e3acc479a2 251 /**
mbed_official 157:90e3acc479a2 252 * @brief Fills each DAC_InitStruct member with its default value.
mbed_official 157:90e3acc479a2 253 * @param DAC_InitStruct: pointer to a DAC_InitTypeDef structure which will
mbed_official 157:90e3acc479a2 254 * be initialized.
mbed_official 157:90e3acc479a2 255 * @retval None
mbed_official 157:90e3acc479a2 256 */
mbed_official 157:90e3acc479a2 257 void DAC_StructInit(DAC_InitTypeDef* DAC_InitStruct)
mbed_official 157:90e3acc479a2 258 {
mbed_official 157:90e3acc479a2 259 /*--------------- Reset DAC init structure parameters values -----------------*/
mbed_official 157:90e3acc479a2 260 /* Initialize the DAC_Trigger member */
mbed_official 157:90e3acc479a2 261 DAC_InitStruct->DAC_Trigger = DAC_Trigger_None;
mbed_official 157:90e3acc479a2 262 /* Initialize the DAC_WaveGeneration member */
mbed_official 157:90e3acc479a2 263 DAC_InitStruct->DAC_WaveGeneration = DAC_WaveGeneration_None;
mbed_official 157:90e3acc479a2 264 /* Initialize the DAC_LFSRUnmask_TriangleAmplitude member */
mbed_official 157:90e3acc479a2 265 DAC_InitStruct->DAC_LFSRUnmask_TriangleAmplitude = DAC_LFSRUnmask_Bit0;
mbed_official 157:90e3acc479a2 266 /* Initialize the DAC_Buffer_Switch member */
mbed_official 157:90e3acc479a2 267 DAC_InitStruct->DAC_Buffer_Switch = DAC_BufferSwitch_Enable;
mbed_official 157:90e3acc479a2 268 }
mbed_official 157:90e3acc479a2 269
mbed_official 157:90e3acc479a2 270 /**
mbed_official 157:90e3acc479a2 271 * @brief Enables or disables the specified DAC channel.
mbed_official 157:90e3acc479a2 272 * @param DACx: where x can be 1 or 2 to select the DAC peripheral.
mbed_official 157:90e3acc479a2 273 * @param DAC_Channel: The selected DAC channel.
mbed_official 157:90e3acc479a2 274 * This parameter can be one of the following values:
mbed_official 157:90e3acc479a2 275 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 157:90e3acc479a2 276 * @arg DAC_Channel_2: DAC Channel2 selected
mbed_official 157:90e3acc479a2 277 * @param NewState: new state of the DAC channel.
mbed_official 157:90e3acc479a2 278 * This parameter can be: ENABLE or DISABLE.
mbed_official 157:90e3acc479a2 279 * @note When the DAC channel is enabled the trigger source can no more
mbed_official 157:90e3acc479a2 280 * be modified.
mbed_official 157:90e3acc479a2 281 * @retval None
mbed_official 157:90e3acc479a2 282 */
mbed_official 157:90e3acc479a2 283 void DAC_Cmd(DAC_TypeDef* DACx, uint32_t DAC_Channel, FunctionalState NewState)
mbed_official 157:90e3acc479a2 284 {
mbed_official 157:90e3acc479a2 285 /* Check the parameters */
mbed_official 157:90e3acc479a2 286 assert_param(IS_DAC_ALL_PERIPH(DACx));
mbed_official 157:90e3acc479a2 287 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 157:90e3acc479a2 288 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 157:90e3acc479a2 289
mbed_official 157:90e3acc479a2 290 if (NewState != DISABLE)
mbed_official 157:90e3acc479a2 291 {
mbed_official 157:90e3acc479a2 292 /* Enable the selected DAC channel */
mbed_official 157:90e3acc479a2 293 DACx->CR |= (DAC_CR_EN1 << DAC_Channel);
mbed_official 157:90e3acc479a2 294 }
mbed_official 157:90e3acc479a2 295 else
mbed_official 157:90e3acc479a2 296 {
mbed_official 157:90e3acc479a2 297 /* Disable the selected DAC channel */
mbed_official 157:90e3acc479a2 298 DACx->CR &= (~(DAC_CR_EN1 << DAC_Channel));
mbed_official 157:90e3acc479a2 299 }
mbed_official 157:90e3acc479a2 300 }
mbed_official 157:90e3acc479a2 301
mbed_official 157:90e3acc479a2 302 /**
mbed_official 157:90e3acc479a2 303 * @brief Enables or disables the selected DAC channel software trigger.
mbed_official 157:90e3acc479a2 304 * @param DACx: where x can be 1 or 2 to select the DAC peripheral.
mbed_official 157:90e3acc479a2 305 * @param DAC_Channel: the selected DAC channel.
mbed_official 157:90e3acc479a2 306 * This parameter can be one of the following values:
mbed_official 157:90e3acc479a2 307 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 157:90e3acc479a2 308 * @arg DAC_Channel_2: DAC Channel2 selected
mbed_official 157:90e3acc479a2 309 * @param NewState: new state of the selected DAC channel software trigger.
mbed_official 157:90e3acc479a2 310 * This parameter can be: ENABLE or DISABLE.
mbed_official 157:90e3acc479a2 311 * @retval None
mbed_official 157:90e3acc479a2 312 */
mbed_official 157:90e3acc479a2 313 void DAC_SoftwareTriggerCmd(DAC_TypeDef* DACx, uint32_t DAC_Channel, FunctionalState NewState)
mbed_official 157:90e3acc479a2 314 {
mbed_official 157:90e3acc479a2 315 /* Check the parameters */
mbed_official 157:90e3acc479a2 316 assert_param(IS_DAC_ALL_PERIPH(DACx));
mbed_official 157:90e3acc479a2 317 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 157:90e3acc479a2 318 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 157:90e3acc479a2 319
mbed_official 157:90e3acc479a2 320 if (NewState != DISABLE)
mbed_official 157:90e3acc479a2 321 {
mbed_official 157:90e3acc479a2 322 /* Enable software trigger for the selected DAC channel */
mbed_official 157:90e3acc479a2 323 DACx->SWTRIGR |= (uint32_t)DAC_SWTRIGR_SWTRIG1 << (DAC_Channel >> 4);
mbed_official 157:90e3acc479a2 324 }
mbed_official 157:90e3acc479a2 325 else
mbed_official 157:90e3acc479a2 326 {
mbed_official 157:90e3acc479a2 327 /* Disable software trigger for the selected DAC channel */
mbed_official 157:90e3acc479a2 328 DACx->SWTRIGR &= ~((uint32_t)DAC_SWTRIGR_SWTRIG1 << (DAC_Channel >> 4));
mbed_official 157:90e3acc479a2 329 }
mbed_official 157:90e3acc479a2 330 }
mbed_official 157:90e3acc479a2 331
mbed_official 157:90e3acc479a2 332 /**
mbed_official 157:90e3acc479a2 333 * @brief Enables or disables simultaneously the two DAC channels software
mbed_official 157:90e3acc479a2 334 * triggers.
mbed_official 157:90e3acc479a2 335 * @param DACx: where x can be 1 to select the DAC1 peripheral.
mbed_official 157:90e3acc479a2 336 * @note Dual trigger is not applicable for DAC2 (DAC2 integrates one channel).
mbed_official 157:90e3acc479a2 337 * @param NewState: new state of the DAC channels software triggers.
mbed_official 157:90e3acc479a2 338 * This parameter can be: ENABLE or DISABLE.
mbed_official 157:90e3acc479a2 339 * @retval None
mbed_official 157:90e3acc479a2 340 */
mbed_official 157:90e3acc479a2 341 void DAC_DualSoftwareTriggerCmd(DAC_TypeDef* DACx, FunctionalState NewState)
mbed_official 157:90e3acc479a2 342 {
mbed_official 157:90e3acc479a2 343 /* Check the parameters */
mbed_official 157:90e3acc479a2 344 assert_param(IS_DAC_LIST1_PERIPH(DACx));
mbed_official 157:90e3acc479a2 345 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 157:90e3acc479a2 346
mbed_official 157:90e3acc479a2 347 if (NewState != DISABLE)
mbed_official 157:90e3acc479a2 348 {
mbed_official 157:90e3acc479a2 349 /* Enable software trigger for both DAC channels */
mbed_official 157:90e3acc479a2 350 DACx->SWTRIGR |= DUAL_SWTRIG_SET;
mbed_official 157:90e3acc479a2 351 }
mbed_official 157:90e3acc479a2 352 else
mbed_official 157:90e3acc479a2 353 {
mbed_official 157:90e3acc479a2 354 /* Disable software trigger for both DAC channels */
mbed_official 157:90e3acc479a2 355 DACx->SWTRIGR &= DUAL_SWTRIG_RESET;
mbed_official 157:90e3acc479a2 356 }
mbed_official 157:90e3acc479a2 357 }
mbed_official 157:90e3acc479a2 358
mbed_official 157:90e3acc479a2 359 /**
mbed_official 157:90e3acc479a2 360 * @brief Enables or disables the selected DAC channel wave generation.
mbed_official 157:90e3acc479a2 361 * @param DACx: where x can be 1 to select the DAC1 peripheral.
mbed_official 157:90e3acc479a2 362 * @note Wave generation is not available in DAC2.
mbed_official 157:90e3acc479a2 363 * @param DAC_Channel: the selected DAC channel.
mbed_official 157:90e3acc479a2 364 * This parameter can be one of the following values:
mbed_official 157:90e3acc479a2 365 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 157:90e3acc479a2 366 * @arg DAC_Channel_2: DAC Channel2 selected
mbed_official 157:90e3acc479a2 367 * @param DAC_Wave: Specifies the wave type to enable or disable.
mbed_official 157:90e3acc479a2 368 * This parameter can be one of the following values:
mbed_official 157:90e3acc479a2 369 * @arg DAC_Wave_Noise: noise wave generation
mbed_official 157:90e3acc479a2 370 * @arg DAC_Wave_Triangle: triangle wave generation
mbed_official 157:90e3acc479a2 371 * @param NewState: new state of the selected DAC channel wave generation.
mbed_official 157:90e3acc479a2 372 * This parameter can be: ENABLE or DISABLE.
mbed_official 157:90e3acc479a2 373 * @note
mbed_official 157:90e3acc479a2 374 * @retval None
mbed_official 157:90e3acc479a2 375 */
mbed_official 157:90e3acc479a2 376 void DAC_WaveGenerationCmd(DAC_TypeDef* DACx, uint32_t DAC_Channel, uint32_t DAC_Wave, FunctionalState NewState)
mbed_official 157:90e3acc479a2 377 {
mbed_official 157:90e3acc479a2 378 /* Check the parameters */
mbed_official 157:90e3acc479a2 379 assert_param(IS_DAC_LIST1_PERIPH(DACx));
mbed_official 157:90e3acc479a2 380 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 157:90e3acc479a2 381 assert_param(IS_DAC_WAVE(DAC_Wave));
mbed_official 157:90e3acc479a2 382 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 157:90e3acc479a2 383
mbed_official 157:90e3acc479a2 384 if (NewState != DISABLE)
mbed_official 157:90e3acc479a2 385 {
mbed_official 157:90e3acc479a2 386 /* Enable the selected wave generation for the selected DAC channel */
mbed_official 157:90e3acc479a2 387 DACx->CR |= DAC_Wave << DAC_Channel;
mbed_official 157:90e3acc479a2 388 }
mbed_official 157:90e3acc479a2 389 else
mbed_official 157:90e3acc479a2 390 {
mbed_official 157:90e3acc479a2 391 /* Disable the selected wave generation for the selected DAC channel */
mbed_official 157:90e3acc479a2 392 DACx->CR &= ~(DAC_Wave << DAC_Channel);
mbed_official 157:90e3acc479a2 393 }
mbed_official 157:90e3acc479a2 394 }
mbed_official 157:90e3acc479a2 395
mbed_official 157:90e3acc479a2 396 /**
mbed_official 157:90e3acc479a2 397 * @brief Set the specified data holding register value for DAC channel1.
mbed_official 157:90e3acc479a2 398 * @param DACx: where x can be 1 or 2 to select the DAC peripheral.
mbed_official 157:90e3acc479a2 399 * @param DAC_Align: Specifies the data alignment for DAC channel1.
mbed_official 157:90e3acc479a2 400 * This parameter can be one of the following values:
mbed_official 157:90e3acc479a2 401 * @arg DAC_Align_8b_R: 8bit right data alignment selected
mbed_official 157:90e3acc479a2 402 * @arg DAC_Align_12b_L: 12bit left data alignment selected
mbed_official 157:90e3acc479a2 403 * @arg DAC_Align_12b_R: 12bit right data alignment selected
mbed_official 157:90e3acc479a2 404 * @param Data: Data to be loaded in the selected data holding register.
mbed_official 157:90e3acc479a2 405 * @retval None
mbed_official 157:90e3acc479a2 406 */
mbed_official 157:90e3acc479a2 407 void DAC_SetChannel1Data(DAC_TypeDef* DACx, uint32_t DAC_Align, uint16_t Data)
mbed_official 157:90e3acc479a2 408 {
mbed_official 157:90e3acc479a2 409 __IO uint32_t tmp = 0;
mbed_official 157:90e3acc479a2 410
mbed_official 157:90e3acc479a2 411 /* Check the parameters */
mbed_official 157:90e3acc479a2 412 assert_param(IS_DAC_ALL_PERIPH(DACx));
mbed_official 157:90e3acc479a2 413 assert_param(IS_DAC_ALIGN(DAC_Align));
mbed_official 157:90e3acc479a2 414 assert_param(IS_DAC_DATA(Data));
mbed_official 157:90e3acc479a2 415
mbed_official 157:90e3acc479a2 416 tmp = (uint32_t)DACx;
mbed_official 157:90e3acc479a2 417 tmp += DHR12R1_OFFSET + DAC_Align;
mbed_official 157:90e3acc479a2 418
mbed_official 157:90e3acc479a2 419 /* Set the DAC channel1 selected data holding register */
mbed_official 157:90e3acc479a2 420 *(__IO uint32_t *) tmp = Data;
mbed_official 157:90e3acc479a2 421 }
mbed_official 157:90e3acc479a2 422
mbed_official 157:90e3acc479a2 423 /**
mbed_official 157:90e3acc479a2 424 * @brief Set the specified data holding register value for DAC channel2.
mbed_official 157:90e3acc479a2 425 * @param DACx: where x can be 1 to select the DAC peripheral.
mbed_official 157:90e3acc479a2 426 * @note This function is available only for DAC1.
mbed_official 157:90e3acc479a2 427 * @param DAC_Align: Specifies the data alignment for DAC channel2.
mbed_official 157:90e3acc479a2 428 * This parameter can be one of the following values:
mbed_official 157:90e3acc479a2 429 * @arg DAC_Align_8b_R: 8bit right data alignment selected
mbed_official 157:90e3acc479a2 430 * @arg DAC_Align_12b_L: 12bit left data alignment selected
mbed_official 157:90e3acc479a2 431 * @arg DAC_Align_12b_R: 12bit right data alignment selected
mbed_official 157:90e3acc479a2 432 * @param Data : Data to be loaded in the selected data holding register.
mbed_official 157:90e3acc479a2 433 * @retval None
mbed_official 157:90e3acc479a2 434 */
mbed_official 157:90e3acc479a2 435 void DAC_SetChannel2Data(DAC_TypeDef* DACx, uint32_t DAC_Align, uint16_t Data)
mbed_official 157:90e3acc479a2 436 {
mbed_official 157:90e3acc479a2 437 __IO uint32_t tmp = 0;
mbed_official 157:90e3acc479a2 438
mbed_official 157:90e3acc479a2 439 /* Check the parameters */
mbed_official 157:90e3acc479a2 440 assert_param(IS_DAC_LIST1_PERIPH(DACx));
mbed_official 157:90e3acc479a2 441 assert_param(IS_DAC_ALIGN(DAC_Align));
mbed_official 157:90e3acc479a2 442 assert_param(IS_DAC_DATA(Data));
mbed_official 157:90e3acc479a2 443
mbed_official 157:90e3acc479a2 444 tmp = (uint32_t)DACx;
mbed_official 157:90e3acc479a2 445 tmp += DHR12R2_OFFSET + DAC_Align;
mbed_official 157:90e3acc479a2 446
mbed_official 157:90e3acc479a2 447 /* Set the DAC channel2 selected data holding register */
mbed_official 157:90e3acc479a2 448 *(__IO uint32_t *)tmp = Data;
mbed_official 157:90e3acc479a2 449 }
mbed_official 157:90e3acc479a2 450
mbed_official 157:90e3acc479a2 451 /**
mbed_official 157:90e3acc479a2 452 * @brief Set the specified data holding register value for dual channel DAC.
mbed_official 157:90e3acc479a2 453 * @param DACx: where x can be 1 to select the DAC peripheral.
mbed_official 157:90e3acc479a2 454 * @note This function isn't applicable for DAC2.
mbed_official 157:90e3acc479a2 455 * @param DAC_Align: Specifies the data alignment for dual channel DAC.
mbed_official 157:90e3acc479a2 456 * This parameter can be one of the following values:
mbed_official 157:90e3acc479a2 457 * @arg DAC_Align_8b_R: 8bit right data alignment selected
mbed_official 157:90e3acc479a2 458 * @arg DAC_Align_12b_L: 12bit left data alignment selected
mbed_official 157:90e3acc479a2 459 * @arg DAC_Align_12b_R: 12bit right data alignment selected
mbed_official 157:90e3acc479a2 460 * @param Data2: Data for DAC Channel2 to be loaded in the selected data
mbed_official 157:90e3acc479a2 461 * holding register.
mbed_official 157:90e3acc479a2 462 * @param Data1: Data for DAC Channel1 to be loaded in the selected data
mbed_official 157:90e3acc479a2 463 * holding register.
mbed_official 157:90e3acc479a2 464 * @note In dual mode, a unique register access is required to write in both
mbed_official 157:90e3acc479a2 465 * DAC channels at the same time.
mbed_official 157:90e3acc479a2 466 * @retval None
mbed_official 157:90e3acc479a2 467 */
mbed_official 157:90e3acc479a2 468 void DAC_SetDualChannelData(DAC_TypeDef* DACx, uint32_t DAC_Align, uint16_t Data2, uint16_t Data1)
mbed_official 157:90e3acc479a2 469 {
mbed_official 157:90e3acc479a2 470 uint32_t data = 0, tmp = 0;
mbed_official 157:90e3acc479a2 471
mbed_official 157:90e3acc479a2 472 /* Check the parameters */
mbed_official 157:90e3acc479a2 473 assert_param(IS_DAC_LIST1_PERIPH(DACx));
mbed_official 157:90e3acc479a2 474 assert_param(IS_DAC_ALIGN(DAC_Align));
mbed_official 157:90e3acc479a2 475 assert_param(IS_DAC_DATA(Data1));
mbed_official 157:90e3acc479a2 476 assert_param(IS_DAC_DATA(Data2));
mbed_official 157:90e3acc479a2 477
mbed_official 157:90e3acc479a2 478 /* Calculate and set dual DAC data holding register value */
mbed_official 157:90e3acc479a2 479 if (DAC_Align == DAC_Align_8b_R)
mbed_official 157:90e3acc479a2 480 {
mbed_official 157:90e3acc479a2 481 data = ((uint32_t)Data2 << 8) | Data1;
mbed_official 157:90e3acc479a2 482 }
mbed_official 157:90e3acc479a2 483 else
mbed_official 157:90e3acc479a2 484 {
mbed_official 157:90e3acc479a2 485 data = ((uint32_t)Data2 << 16) | Data1;
mbed_official 157:90e3acc479a2 486 }
mbed_official 157:90e3acc479a2 487
mbed_official 157:90e3acc479a2 488 tmp = (uint32_t)DACx;
mbed_official 157:90e3acc479a2 489 tmp += DHR12RD_OFFSET + DAC_Align;
mbed_official 157:90e3acc479a2 490
mbed_official 157:90e3acc479a2 491 /* Set the dual DAC selected data holding register */
mbed_official 157:90e3acc479a2 492 *(__IO uint32_t *)tmp = data;
mbed_official 157:90e3acc479a2 493 }
mbed_official 157:90e3acc479a2 494
mbed_official 157:90e3acc479a2 495 /**
mbed_official 157:90e3acc479a2 496 * @brief Returns the last data output value of the selected DAC channel.
mbed_official 157:90e3acc479a2 497 * @param DACx: where x can be 1 or 2 to select the DAC peripheral.
mbed_official 157:90e3acc479a2 498 * @param DAC_Channel: the selected DAC channel.
mbed_official 157:90e3acc479a2 499 * This parameter can be one of the following values:
mbed_official 157:90e3acc479a2 500 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 157:90e3acc479a2 501 * @arg DAC_Channel_2: DAC Channel2 selected
mbed_official 157:90e3acc479a2 502 * @retval The selected DAC channel data output value.
mbed_official 157:90e3acc479a2 503 */
mbed_official 157:90e3acc479a2 504 uint16_t DAC_GetDataOutputValue(DAC_TypeDef* DACx, uint32_t DAC_Channel)
mbed_official 157:90e3acc479a2 505 {
mbed_official 157:90e3acc479a2 506 __IO uint32_t tmp = 0;
mbed_official 157:90e3acc479a2 507
mbed_official 157:90e3acc479a2 508 /* Check the parameters */
mbed_official 157:90e3acc479a2 509 assert_param(IS_DAC_ALL_PERIPH(DACx));
mbed_official 157:90e3acc479a2 510 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 157:90e3acc479a2 511
mbed_official 157:90e3acc479a2 512 tmp = (uint32_t) DACx;
mbed_official 157:90e3acc479a2 513 tmp += DOR_OFFSET + ((uint32_t)DAC_Channel >> 2);
mbed_official 157:90e3acc479a2 514
mbed_official 157:90e3acc479a2 515 /* Returns the DAC channel data output register value */
mbed_official 157:90e3acc479a2 516 return (uint16_t) (*(__IO uint32_t*) tmp);
mbed_official 157:90e3acc479a2 517 }
mbed_official 157:90e3acc479a2 518
mbed_official 157:90e3acc479a2 519 /**
mbed_official 157:90e3acc479a2 520 * @}
mbed_official 157:90e3acc479a2 521 */
mbed_official 157:90e3acc479a2 522
mbed_official 157:90e3acc479a2 523 /** @defgroup DAC_Group2 DMA management functions
mbed_official 157:90e3acc479a2 524 * @brief DMA management functions
mbed_official 157:90e3acc479a2 525 *
mbed_official 157:90e3acc479a2 526 @verbatim
mbed_official 157:90e3acc479a2 527 ===============================================================================
mbed_official 157:90e3acc479a2 528 ##### DMA management functions #####
mbed_official 157:90e3acc479a2 529 ===============================================================================
mbed_official 157:90e3acc479a2 530
mbed_official 157:90e3acc479a2 531 @endverbatim
mbed_official 157:90e3acc479a2 532 * @{
mbed_official 157:90e3acc479a2 533 */
mbed_official 157:90e3acc479a2 534
mbed_official 157:90e3acc479a2 535 /**
mbed_official 157:90e3acc479a2 536 * @brief Enables or disables the specified DAC channel DMA request.
mbed_official 157:90e3acc479a2 537 * When enabled DMA1 is generated when an external trigger (EXTI Line9,
mbed_official 157:90e3acc479a2 538 * TIM2, TIM4, TIM6, TIM7 or TIM9 but not a software trigger) occurs
mbed_official 157:90e3acc479a2 539 * @param DACx: where x can be 1 or 2 to select the DAC peripheral.
mbed_official 157:90e3acc479a2 540 * @param DAC_Channel: the selected DAC channel.
mbed_official 157:90e3acc479a2 541 * This parameter can be one of the following values:
mbed_official 157:90e3acc479a2 542 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 157:90e3acc479a2 543 * @arg DAC_Channel_2: DAC Channel2 selected
mbed_official 157:90e3acc479a2 544 * @param NewState: new state of the selected DAC channel DMA request.
mbed_official 157:90e3acc479a2 545 * This parameter can be: ENABLE or DISABLE.
mbed_official 157:90e3acc479a2 546 * @note The DAC channel1 (channel2) is mapped on DMA1 channel3 (channel4) which
mbed_official 157:90e3acc479a2 547 * must be already configured.
mbed_official 157:90e3acc479a2 548 * @retval None
mbed_official 157:90e3acc479a2 549 */
mbed_official 157:90e3acc479a2 550 void DAC_DMACmd(DAC_TypeDef* DACx, uint32_t DAC_Channel, FunctionalState NewState)
mbed_official 157:90e3acc479a2 551 {
mbed_official 157:90e3acc479a2 552 /* Check the parameters */
mbed_official 157:90e3acc479a2 553 assert_param(IS_DAC_ALL_PERIPH(DACx));
mbed_official 157:90e3acc479a2 554 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 157:90e3acc479a2 555 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 157:90e3acc479a2 556
mbed_official 157:90e3acc479a2 557 if (NewState != DISABLE)
mbed_official 157:90e3acc479a2 558 {
mbed_official 157:90e3acc479a2 559 /* Enable the selected DAC channel DMA request */
mbed_official 157:90e3acc479a2 560 DACx->CR |= (DAC_CR_DMAEN1 << DAC_Channel);
mbed_official 157:90e3acc479a2 561 }
mbed_official 157:90e3acc479a2 562 else
mbed_official 157:90e3acc479a2 563 {
mbed_official 157:90e3acc479a2 564 /* Disable the selected DAC channel DMA request */
mbed_official 157:90e3acc479a2 565 DACx->CR &= (~(DAC_CR_DMAEN1 << DAC_Channel));
mbed_official 157:90e3acc479a2 566 }
mbed_official 157:90e3acc479a2 567 }
mbed_official 157:90e3acc479a2 568
mbed_official 157:90e3acc479a2 569 /**
mbed_official 157:90e3acc479a2 570 * @}
mbed_official 157:90e3acc479a2 571 */
mbed_official 157:90e3acc479a2 572
mbed_official 157:90e3acc479a2 573 /** @defgroup DAC_Group3 Interrupts and flags management functions
mbed_official 157:90e3acc479a2 574 * @brief Interrupts and flags management functions
mbed_official 157:90e3acc479a2 575 *
mbed_official 157:90e3acc479a2 576 @verbatim
mbed_official 157:90e3acc479a2 577 ===============================================================================
mbed_official 157:90e3acc479a2 578 ##### Interrupts and flags management functions #####
mbed_official 157:90e3acc479a2 579 ===============================================================================
mbed_official 157:90e3acc479a2 580
mbed_official 157:90e3acc479a2 581 @endverbatim
mbed_official 157:90e3acc479a2 582 * @{
mbed_official 157:90e3acc479a2 583 */
mbed_official 157:90e3acc479a2 584
mbed_official 157:90e3acc479a2 585 /**
mbed_official 157:90e3acc479a2 586 * @brief Enables or disables the specified DAC interrupts.
mbed_official 157:90e3acc479a2 587 * @param DACx: where x can be 1 or 2 to select the DAC peripheral.
mbed_official 157:90e3acc479a2 588 * @param DAC_Channel: the selected DAC channel.
mbed_official 157:90e3acc479a2 589 * This parameter can be one of the following values:
mbed_official 157:90e3acc479a2 590 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 157:90e3acc479a2 591 * @arg DAC_Channel_2: DAC Channel2 selected
mbed_official 157:90e3acc479a2 592 * @param DAC_IT: specifies the DAC interrupt sources to be enabled or disabled.
mbed_official 157:90e3acc479a2 593 * This parameter can be:
mbed_official 157:90e3acc479a2 594 * @arg DAC_IT_DMAUDR: DMA underrun interrupt mask
mbed_official 157:90e3acc479a2 595 * @note The DMA underrun occurs when a second external trigger arrives before
mbed_official 157:90e3acc479a2 596 * the acknowledgement for the first external trigger is received (first request).
mbed_official 157:90e3acc479a2 597 * @param NewState: new state of the specified DAC interrupts.
mbed_official 157:90e3acc479a2 598 * This parameter can be: ENABLE or DISABLE.
mbed_official 157:90e3acc479a2 599 * @retval None
mbed_official 157:90e3acc479a2 600 */
mbed_official 157:90e3acc479a2 601 void DAC_ITConfig(DAC_TypeDef* DACx, uint32_t DAC_Channel, uint32_t DAC_IT, FunctionalState NewState)
mbed_official 157:90e3acc479a2 602 {
mbed_official 157:90e3acc479a2 603 /* Check the parameters */
mbed_official 157:90e3acc479a2 604 assert_param(IS_DAC_ALL_PERIPH(DACx));
mbed_official 157:90e3acc479a2 605 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 157:90e3acc479a2 606 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 157:90e3acc479a2 607 assert_param(IS_DAC_IT(DAC_IT));
mbed_official 157:90e3acc479a2 608
mbed_official 157:90e3acc479a2 609 if (NewState != DISABLE)
mbed_official 157:90e3acc479a2 610 {
mbed_official 157:90e3acc479a2 611 /* Enable the selected DAC interrupts */
mbed_official 157:90e3acc479a2 612 DACx->CR |= (DAC_IT << DAC_Channel);
mbed_official 157:90e3acc479a2 613 }
mbed_official 157:90e3acc479a2 614 else
mbed_official 157:90e3acc479a2 615 {
mbed_official 157:90e3acc479a2 616 /* Disable the selected DAC interrupts */
mbed_official 157:90e3acc479a2 617 DACx->CR &= (~(uint32_t)(DAC_IT << DAC_Channel));
mbed_official 157:90e3acc479a2 618 }
mbed_official 157:90e3acc479a2 619 }
mbed_official 157:90e3acc479a2 620
mbed_official 157:90e3acc479a2 621 /**
mbed_official 157:90e3acc479a2 622 * @brief Checks whether the specified DAC flag is set or not.
mbed_official 157:90e3acc479a2 623 * @param DACx: where x can be 1 or 2 to select the DAC peripheral.
mbed_official 157:90e3acc479a2 624 * @param DAC_Channel: thee selected DAC channel.
mbed_official 157:90e3acc479a2 625 * This parameter can be one of the following values:
mbed_official 157:90e3acc479a2 626 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 157:90e3acc479a2 627 * @arg DAC_Channel_2: DAC Channel2 selected
mbed_official 157:90e3acc479a2 628 * @param DAC_FLAG: specifies the flag to check.
mbed_official 157:90e3acc479a2 629 * This parameter can be:
mbed_official 157:90e3acc479a2 630 * @arg DAC_FLAG_DMAUDR: DMA underrun flag
mbed_official 157:90e3acc479a2 631 * @note The DMA underrun occurs when a second external trigger arrives before
mbed_official 157:90e3acc479a2 632 * the acknowledgement for the first external trigger is received (first request).
mbed_official 157:90e3acc479a2 633 * @retval The new state of DAC_FLAG (SET or RESET).
mbed_official 157:90e3acc479a2 634 */
mbed_official 157:90e3acc479a2 635 FlagStatus DAC_GetFlagStatus(DAC_TypeDef* DACx, uint32_t DAC_Channel, uint32_t DAC_FLAG)
mbed_official 157:90e3acc479a2 636 {
mbed_official 157:90e3acc479a2 637 FlagStatus bitstatus = RESET;
mbed_official 157:90e3acc479a2 638
mbed_official 157:90e3acc479a2 639 /* Check the parameters */
mbed_official 157:90e3acc479a2 640 assert_param(IS_DAC_ALL_PERIPH(DACx));
mbed_official 157:90e3acc479a2 641 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 157:90e3acc479a2 642 assert_param(IS_DAC_FLAG(DAC_FLAG));
mbed_official 157:90e3acc479a2 643
mbed_official 157:90e3acc479a2 644 /* Check the status of the specified DAC flag */
mbed_official 157:90e3acc479a2 645 if ((DACx->SR & (DAC_FLAG << DAC_Channel)) != (uint8_t)RESET)
mbed_official 157:90e3acc479a2 646 {
mbed_official 157:90e3acc479a2 647 /* DAC_FLAG is set */
mbed_official 157:90e3acc479a2 648 bitstatus = SET;
mbed_official 157:90e3acc479a2 649 }
mbed_official 157:90e3acc479a2 650 else
mbed_official 157:90e3acc479a2 651 {
mbed_official 157:90e3acc479a2 652 /* DAC_FLAG is reset */
mbed_official 157:90e3acc479a2 653 bitstatus = RESET;
mbed_official 157:90e3acc479a2 654 }
mbed_official 157:90e3acc479a2 655 /* Return the DAC_FLAG status */
mbed_official 157:90e3acc479a2 656 return bitstatus;
mbed_official 157:90e3acc479a2 657 }
mbed_official 157:90e3acc479a2 658
mbed_official 157:90e3acc479a2 659 /**
mbed_official 157:90e3acc479a2 660 * @brief Clears the DAC channel's pending flags.
mbed_official 157:90e3acc479a2 661 * @param DACx: where x can be 1 or 2 to select the DAC peripheral.
mbed_official 157:90e3acc479a2 662 * @param DAC_Channel: the selected DAC channel.
mbed_official 157:90e3acc479a2 663 * This parameter can be one of the following values:
mbed_official 157:90e3acc479a2 664 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 157:90e3acc479a2 665 * @arg DAC_Channel_2: DAC Channel2 selected
mbed_official 157:90e3acc479a2 666 * @param DAC_FLAG: specifies the flag to clear.
mbed_official 157:90e3acc479a2 667 * This parameter can be:
mbed_official 157:90e3acc479a2 668 * @arg DAC_FLAG_DMAUDR: DMA underrun flag
mbed_official 157:90e3acc479a2 669 * @retval None
mbed_official 157:90e3acc479a2 670 */
mbed_official 157:90e3acc479a2 671 void DAC_ClearFlag(DAC_TypeDef* DACx, uint32_t DAC_Channel, uint32_t DAC_FLAG)
mbed_official 157:90e3acc479a2 672 {
mbed_official 157:90e3acc479a2 673 /* Check the parameters */
mbed_official 157:90e3acc479a2 674 assert_param(IS_DAC_ALL_PERIPH(DACx));
mbed_official 157:90e3acc479a2 675 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 157:90e3acc479a2 676 assert_param(IS_DAC_FLAG(DAC_FLAG));
mbed_official 157:90e3acc479a2 677
mbed_official 157:90e3acc479a2 678 /* Clear the selected DAC flags */
mbed_official 157:90e3acc479a2 679 DACx->SR = (DAC_FLAG << DAC_Channel);
mbed_official 157:90e3acc479a2 680 }
mbed_official 157:90e3acc479a2 681
mbed_official 157:90e3acc479a2 682 /**
mbed_official 157:90e3acc479a2 683 * @brief Checks whether the specified DAC interrupt has occurred or not.
mbed_official 157:90e3acc479a2 684 * @param DACx: where x can be 1 or 2 to select the DAC peripheral.
mbed_official 157:90e3acc479a2 685 * @param DAC_Channel: the selected DAC channel.
mbed_official 157:90e3acc479a2 686 * This parameter can be one of the following values:
mbed_official 157:90e3acc479a2 687 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 157:90e3acc479a2 688 * @arg DAC_Channel_2: DAC Channel2 selected
mbed_official 157:90e3acc479a2 689 * @param DAC_IT: specifies the DAC interrupt source to check.
mbed_official 157:90e3acc479a2 690 * This parameter can be:
mbed_official 157:90e3acc479a2 691 * @arg DAC_IT_DMAUDR: DMA underrun interrupt mask
mbed_official 157:90e3acc479a2 692 * @note The DMA underrun occurs when a second external trigger arrives before
mbed_official 157:90e3acc479a2 693 * the acknowledgement for the first external trigger is received (first request).
mbed_official 157:90e3acc479a2 694 * @retval The new state of DAC_IT (SET or RESET).
mbed_official 157:90e3acc479a2 695 */
mbed_official 157:90e3acc479a2 696 ITStatus DAC_GetITStatus(DAC_TypeDef* DACx, uint32_t DAC_Channel, uint32_t DAC_IT)
mbed_official 157:90e3acc479a2 697 {
mbed_official 157:90e3acc479a2 698 ITStatus bitstatus = RESET;
mbed_official 157:90e3acc479a2 699 uint32_t enablestatus = 0;
mbed_official 157:90e3acc479a2 700
mbed_official 157:90e3acc479a2 701 /* Check the parameters */
mbed_official 157:90e3acc479a2 702 assert_param(IS_DAC_ALL_PERIPH(DACx));
mbed_official 157:90e3acc479a2 703 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 157:90e3acc479a2 704 assert_param(IS_DAC_IT(DAC_IT));
mbed_official 157:90e3acc479a2 705
mbed_official 157:90e3acc479a2 706 /* Get the DAC_IT enable bit status */
mbed_official 157:90e3acc479a2 707 enablestatus = (DACx->CR & (DAC_IT << DAC_Channel)) ;
mbed_official 157:90e3acc479a2 708
mbed_official 157:90e3acc479a2 709 /* Check the status of the specified DAC interrupt */
mbed_official 157:90e3acc479a2 710 if (((DACx->SR & (DAC_IT << DAC_Channel)) != (uint32_t)RESET) && enablestatus)
mbed_official 157:90e3acc479a2 711 {
mbed_official 157:90e3acc479a2 712 /* DAC_IT is set */
mbed_official 157:90e3acc479a2 713 bitstatus = SET;
mbed_official 157:90e3acc479a2 714 }
mbed_official 157:90e3acc479a2 715 else
mbed_official 157:90e3acc479a2 716 {
mbed_official 157:90e3acc479a2 717 /* DAC_IT is reset */
mbed_official 157:90e3acc479a2 718 bitstatus = RESET;
mbed_official 157:90e3acc479a2 719 }
mbed_official 157:90e3acc479a2 720 /* Return the DAC_IT status */
mbed_official 157:90e3acc479a2 721 return bitstatus;
mbed_official 157:90e3acc479a2 722 }
mbed_official 157:90e3acc479a2 723
mbed_official 157:90e3acc479a2 724 /**
mbed_official 157:90e3acc479a2 725 * @brief Clears the DAC channel's interrupt pending bits.
mbed_official 157:90e3acc479a2 726 * @param DACx: where x can be 1 or 2 to select the DAC peripheral.
mbed_official 157:90e3acc479a2 727 * @param DAC_Channel: the selected DAC channel.
mbed_official 157:90e3acc479a2 728 * This parameter can be one of the following values:
mbed_official 157:90e3acc479a2 729 * @arg DAC_Channel_1: DAC Channel1 selected
mbed_official 157:90e3acc479a2 730 * @arg DAC_Channel_2: DAC Channel2 selected
mbed_official 157:90e3acc479a2 731 * @param DAC_IT: specifies the DAC interrupt pending bit to clear.
mbed_official 157:90e3acc479a2 732 * This parameter can be the following values:
mbed_official 157:90e3acc479a2 733 * @arg DAC_IT_DMAUDR: DMA underrun interrupt mask
mbed_official 157:90e3acc479a2 734 * @retval None
mbed_official 157:90e3acc479a2 735 */
mbed_official 157:90e3acc479a2 736 void DAC_ClearITPendingBit(DAC_TypeDef* DACx, uint32_t DAC_Channel, uint32_t DAC_IT)
mbed_official 157:90e3acc479a2 737 {
mbed_official 157:90e3acc479a2 738 /* Check the parameters */
mbed_official 157:90e3acc479a2 739 assert_param(IS_DAC_ALL_PERIPH(DACx));
mbed_official 157:90e3acc479a2 740 assert_param(IS_DAC_CHANNEL(DAC_Channel));
mbed_official 157:90e3acc479a2 741 assert_param(IS_DAC_IT(DAC_IT));
mbed_official 157:90e3acc479a2 742
mbed_official 157:90e3acc479a2 743 /* Clear the selected DAC interrupt pending bits */
mbed_official 157:90e3acc479a2 744 DACx->SR = (DAC_IT << DAC_Channel);
mbed_official 157:90e3acc479a2 745 }
mbed_official 157:90e3acc479a2 746
mbed_official 157:90e3acc479a2 747 /**
mbed_official 157:90e3acc479a2 748 * @}
mbed_official 157:90e3acc479a2 749 */
mbed_official 157:90e3acc479a2 750
mbed_official 157:90e3acc479a2 751 /**
mbed_official 157:90e3acc479a2 752 * @}
mbed_official 157:90e3acc479a2 753 */
mbed_official 157:90e3acc479a2 754
mbed_official 157:90e3acc479a2 755 /**
mbed_official 157:90e3acc479a2 756 * @}
mbed_official 157:90e3acc479a2 757 */
mbed_official 157:90e3acc479a2 758
mbed_official 157:90e3acc479a2 759 /**
mbed_official 157:90e3acc479a2 760 * @}
mbed_official 157:90e3acc479a2 761 */
mbed_official 157:90e3acc479a2 762
mbed_official 157:90e3acc479a2 763 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
mbed_official 157:90e3acc479a2 764