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Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_comp.c@80:66393a7b209d, 2014-01-30 (annotated)

Committer:
mbed_official
Date:
Thu Jan 30 12:15:05 2014 +0000
Revision:
80:66393a7b209d
Parent:
76:aeb1df146756 
Synchronized with git revision dba523f83fe09b7fce11fc1299dd1216e9776359



Full URL: https://github.com/mbedmicro/mbed/commit/dba523f83fe09b7fce11fc1299dd1216e9776359/



Update of I2C, SPI, SLEEP for NUCLEO_F103RB and L152RE

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 76:aeb1df146756 1 /**
mbed_official 76:aeb1df146756 2 ******************************************************************************
mbed_official 76:aeb1df146756 3 * @file stm32l1xx_comp.c
mbed_official 76:aeb1df146756 4 * @author MCD Application Team
mbed_official 80:66393a7b209d 5 * @version V1.3.0
mbed_official 80:66393a7b209d 6 * @date 31-January-2014
mbed_official 76:aeb1df146756 7 * @brief This file provides firmware functions to manage the following
mbed_official 76:aeb1df146756 8 * functionalities of the comparators (COMP1 and COMP2) peripheral:
mbed_official 76:aeb1df146756 9 * + Comparators configuration
mbed_official 76:aeb1df146756 10 * + Window mode control
mbed_official 76:aeb1df146756 11 * + Internal Reference Voltage (VREFINT) output
mbed_official 76:aeb1df146756 12 *
mbed_official 76:aeb1df146756 13 * @verbatim
mbed_official 76:aeb1df146756 14 ===============================================================================
mbed_official 76:aeb1df146756 15 ##### How to use this driver #####
mbed_official 76:aeb1df146756 16 ===============================================================================
mbed_official 76:aeb1df146756 17 [..] The device integrates two analog comparators COMP1 and COMP2:
mbed_official 76:aeb1df146756 18 (+) COMP1 is a fixed threshold (VREFINT) that shares the non inverting
mbed_official 76:aeb1df146756 19 input with the ADC channels.
mbed_official 76:aeb1df146756 20 (+) COMP2 is a rail-to-rail comparator whose the inverting input can be
mbed_official 76:aeb1df146756 21 selected among: DAC_OUT1, DAC_OUT2, 1/4 VREFINT, 1/2 VERFINT, 3/4
mbed_official 76:aeb1df146756 22 VREFINT, VREFINT, PB3 and whose the output can be redirected to
mbed_official 76:aeb1df146756 23 embedded timers: TIM2, TIM3, TIM4, TIM10.
mbed_official 76:aeb1df146756 24
mbed_official 76:aeb1df146756 25 (+) The two comparators COMP1 and COMP2 can be combined in window mode.
mbed_official 76:aeb1df146756 26
mbed_official 76:aeb1df146756 27 -@-
mbed_official 76:aeb1df146756 28 (#@) Comparator APB clock must be enabled to get write access
mbed_official 76:aeb1df146756 29 to comparator register using
mbed_official 76:aeb1df146756 30 RCC_APB1PeriphClockCmd(RCC_APB1Periph_COMP, ENABLE).
mbed_official 76:aeb1df146756 31
mbed_official 76:aeb1df146756 32 (#@) COMP1 comparator and ADC can't be used at the same time since
mbed_official 76:aeb1df146756 33 they share the same ADC switch matrix (analog switches).
mbed_official 76:aeb1df146756 34
mbed_official 76:aeb1df146756 35 (#@) When an I/O is used as comparator input, the corresponding GPIO
mbed_official 76:aeb1df146756 36 registers should be configured in analog mode.
mbed_official 76:aeb1df146756 37
mbed_official 76:aeb1df146756 38 (#@) Comparators outputs (CMP1OUT and CMP2OUT) are not mapped on
mbed_official 76:aeb1df146756 39 GPIO pin. They are only internal.
mbed_official 76:aeb1df146756 40 To get the comparator output level, use COMP_GetOutputLevel().
mbed_official 76:aeb1df146756 41
mbed_official 76:aeb1df146756 42 (#@) COMP1 and COMP2 outputs are internally connected to EXTI Line 21
mbed_official 76:aeb1df146756 43 and EXTI Line 22 respectively.
mbed_official 76:aeb1df146756 44 Interrupts can be used by configuring the EXTI Line using the
mbed_official 76:aeb1df146756 45 EXTI peripheral driver.
mbed_official 76:aeb1df146756 46
mbed_official 76:aeb1df146756 47 (#@) After enabling the comparator (COMP1 or COMP2), user should wait
mbed_official 76:aeb1df146756 48 for start-up time (tSTART) to get right output levels.
mbed_official 76:aeb1df146756 49 Please refer to product datasheet for more information on tSTART.
mbed_official 76:aeb1df146756 50
mbed_official 76:aeb1df146756 51 (#@) Comparators cannot be used to exit the device from Sleep or Stop
mbed_official 76:aeb1df146756 52 mode when the internal reference voltage is switched off using
mbed_official 76:aeb1df146756 53 the PWR_UltraLowPowerCmd() function (ULP bit in the PWR_CR register).
mbed_official 76:aeb1df146756 54
mbed_official 76:aeb1df146756 55 @endverbatim
mbed_official 76:aeb1df146756 56 ******************************************************************************
mbed_official 76:aeb1df146756 57 * @attention
mbed_official 76:aeb1df146756 58 *
mbed_official 80:66393a7b209d 59 * <h2><center>&copy; COPYRIGHT 2014 STMicroelectronics</center></h2>
mbed_official 76:aeb1df146756 60 *
mbed_official 76:aeb1df146756 61 * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
mbed_official 76:aeb1df146756 62 * You may not use this file except in compliance with the License.
mbed_official 76:aeb1df146756 63 * You may obtain a copy of the License at:
mbed_official 76:aeb1df146756 64 *
mbed_official 76:aeb1df146756 65 * http://www.st.com/software_license_agreement_liberty_v2
mbed_official 76:aeb1df146756 66 *
mbed_official 76:aeb1df146756 67 * Unless required by applicable law or agreed to in writing, software
mbed_official 76:aeb1df146756 68 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 76:aeb1df146756 69 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 76:aeb1df146756 70 * See the License for the specific language governing permissions and
mbed_official 76:aeb1df146756 71 * limitations under the License.
mbed_official 76:aeb1df146756 72 *
mbed_official 76:aeb1df146756 73 ******************************************************************************
mbed_official 76:aeb1df146756 74 */
mbed_official 76:aeb1df146756 75
mbed_official 76:aeb1df146756 76 /* Includes ------------------------------------------------------------------*/
mbed_official 76:aeb1df146756 77 #include "stm32l1xx_comp.h"
mbed_official 76:aeb1df146756 78
mbed_official 76:aeb1df146756 79 /** @addtogroup STM32L1xx_StdPeriph_Driver
mbed_official 76:aeb1df146756 80 * @{
mbed_official 76:aeb1df146756 81 */
mbed_official 76:aeb1df146756 82
mbed_official 76:aeb1df146756 83 /** @defgroup COMP
mbed_official 76:aeb1df146756 84 * @brief COMP driver modules.
mbed_official 76:aeb1df146756 85 * @{
mbed_official 76:aeb1df146756 86 */
mbed_official 76:aeb1df146756 87
mbed_official 76:aeb1df146756 88 /* Private typedef -----------------------------------------------------------*/
mbed_official 76:aeb1df146756 89 /* Private define ------------------------------------------------------------*/
mbed_official 76:aeb1df146756 90 /* Private macro -------------------------------------------------------------*/
mbed_official 76:aeb1df146756 91 /* Private variables ---------------------------------------------------------*/
mbed_official 76:aeb1df146756 92 /* Private function prototypes -----------------------------------------------*/
mbed_official 76:aeb1df146756 93 /* Private functions ---------------------------------------------------------*/
mbed_official 76:aeb1df146756 94
mbed_official 76:aeb1df146756 95 /** @defgroup COMP_Private_Functions
mbed_official 76:aeb1df146756 96 * @{
mbed_official 76:aeb1df146756 97 */
mbed_official 76:aeb1df146756 98
mbed_official 76:aeb1df146756 99 /** @defgroup COMP_Group1 Initialization and Configuration functions
mbed_official 76:aeb1df146756 100 * @brief Initialization and Configuration functions.
mbed_official 76:aeb1df146756 101 *
mbed_official 76:aeb1df146756 102 @verbatim
mbed_official 76:aeb1df146756 103 ===============================================================================
mbed_official 76:aeb1df146756 104 ##### Initialization and Configuration functions #####
mbed_official 76:aeb1df146756 105 ===============================================================================
mbed_official 76:aeb1df146756 106
mbed_official 76:aeb1df146756 107 @endverbatim
mbed_official 76:aeb1df146756 108 * @{
mbed_official 76:aeb1df146756 109 */
mbed_official 76:aeb1df146756 110
mbed_official 76:aeb1df146756 111 /**
mbed_official 76:aeb1df146756 112 * @brief Deinitializes COMP peripheral registers to their default reset values.
mbed_official 76:aeb1df146756 113 * @param None
mbed_official 76:aeb1df146756 114 * @retval None
mbed_official 76:aeb1df146756 115 */
mbed_official 76:aeb1df146756 116 void COMP_DeInit(void)
mbed_official 76:aeb1df146756 117 {
mbed_official 76:aeb1df146756 118 COMP->CSR = ((uint32_t)0x00000000); /*!< Set COMP->CSR to reset value */
mbed_official 76:aeb1df146756 119 }
mbed_official 76:aeb1df146756 120
mbed_official 76:aeb1df146756 121 /**
mbed_official 76:aeb1df146756 122 * @brief Initializes the COMP2 peripheral according to the specified parameters
mbed_official 76:aeb1df146756 123 * in the COMP_InitStruct.
mbed_official 76:aeb1df146756 124 * @note This function configures only COMP2.
mbed_official 76:aeb1df146756 125 * @note COMP2 comparator is enabled as soon as the INSEL[2:0] bits are
mbed_official 76:aeb1df146756 126 * different from "000".
mbed_official 76:aeb1df146756 127 * @param COMP_InitStruct: pointer to an COMP_InitTypeDef structure that contains
mbed_official 76:aeb1df146756 128 * the configuration information for the specified COMP peripheral.
mbed_official 76:aeb1df146756 129 * @retval None
mbed_official 76:aeb1df146756 130 */
mbed_official 76:aeb1df146756 131 void COMP_Init(COMP_InitTypeDef* COMP_InitStruct)
mbed_official 76:aeb1df146756 132 {
mbed_official 76:aeb1df146756 133 uint32_t tmpreg = 0;
mbed_official 76:aeb1df146756 134
mbed_official 76:aeb1df146756 135 /* Check the parameters */
mbed_official 76:aeb1df146756 136 assert_param(IS_COMP_INVERTING_INPUT(COMP_InitStruct->COMP_InvertingInput));
mbed_official 76:aeb1df146756 137 assert_param(IS_COMP_OUTPUT(COMP_InitStruct->COMP_OutputSelect));
mbed_official 76:aeb1df146756 138 assert_param(IS_COMP_SPEED(COMP_InitStruct->COMP_Speed));
mbed_official 76:aeb1df146756 139
mbed_official 76:aeb1df146756 140 /*!< Get the COMP CSR value */
mbed_official 76:aeb1df146756 141 tmpreg = COMP->CSR;
mbed_official 76:aeb1df146756 142
mbed_official 76:aeb1df146756 143 /*!< Clear the INSEL[2:0], OUTSEL[1:0] and SPEED bits */
mbed_official 76:aeb1df146756 144 tmpreg &= (uint32_t) (~(uint32_t) (COMP_CSR_OUTSEL | COMP_CSR_INSEL | COMP_CSR_SPEED));
mbed_official 76:aeb1df146756 145
mbed_official 76:aeb1df146756 146 /*!< Configure COMP: speed, inversion input selection and output redirection */
mbed_official 76:aeb1df146756 147 /*!< Set SPEED bit according to COMP_InitStruct->COMP_Speed value */
mbed_official 76:aeb1df146756 148 /*!< Set INSEL bits according to COMP_InitStruct->COMP_InvertingInput value */
mbed_official 76:aeb1df146756 149 /*!< Set OUTSEL bits according to COMP_InitStruct->COMP_OutputSelect value */
mbed_official 76:aeb1df146756 150 tmpreg |= (uint32_t)((COMP_InitStruct->COMP_Speed | COMP_InitStruct->COMP_InvertingInput
mbed_official 76:aeb1df146756 151 | COMP_InitStruct->COMP_OutputSelect));
mbed_official 76:aeb1df146756 152
mbed_official 76:aeb1df146756 153 /*!< The COMP2 comparator is enabled as soon as the INSEL[2:0] bits value are
mbed_official 76:aeb1df146756 154 different from "000" */
mbed_official 76:aeb1df146756 155 /*!< Write to COMP_CSR register */
mbed_official 76:aeb1df146756 156 COMP->CSR = tmpreg;
mbed_official 76:aeb1df146756 157 }
mbed_official 76:aeb1df146756 158
mbed_official 76:aeb1df146756 159 /**
mbed_official 76:aeb1df146756 160 * @brief Enable or disable the COMP1 peripheral.
mbed_official 76:aeb1df146756 161 * @note After enabling COMP1, the following functions should be called to
mbed_official 76:aeb1df146756 162 * connect the selected GPIO input to COMP1 non inverting input:
mbed_official 76:aeb1df146756 163 * @note Enable switch control mode using SYSCFG_RISwitchControlModeCmd()
mbed_official 76:aeb1df146756 164 * @note Close VCOMP switch using SYSCFG_RIIOSwitchConfig()
mbed_official 76:aeb1df146756 165 * @note Close the I/O switch number n corresponding to the I/O
mbed_official 76:aeb1df146756 166 * using SYSCFG_RIIOSwitchConfig()
mbed_official 76:aeb1df146756 167 * @param NewState: new state of the COMP1 peripheral.
mbed_official 76:aeb1df146756 168 * This parameter can be: ENABLE or DISABLE.
mbed_official 76:aeb1df146756 169 * @note This function enables/disables only the COMP1.
mbed_official 76:aeb1df146756 170 * @retval None
mbed_official 76:aeb1df146756 171 */
mbed_official 76:aeb1df146756 172 void COMP_Cmd(FunctionalState NewState)
mbed_official 76:aeb1df146756 173 {
mbed_official 76:aeb1df146756 174 /* Check the parameter */
mbed_official 76:aeb1df146756 175 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 76:aeb1df146756 176
mbed_official 76:aeb1df146756 177 if (NewState != DISABLE)
mbed_official 76:aeb1df146756 178 {
mbed_official 76:aeb1df146756 179 /* Enable the COMP1 */
mbed_official 76:aeb1df146756 180 COMP->CSR |= (uint32_t) COMP_CSR_CMP1EN;
mbed_official 76:aeb1df146756 181 }
mbed_official 76:aeb1df146756 182 else
mbed_official 76:aeb1df146756 183 {
mbed_official 76:aeb1df146756 184 /* Disable the COMP1 */
mbed_official 76:aeb1df146756 185 COMP->CSR &= (uint32_t)(~COMP_CSR_CMP1EN);
mbed_official 76:aeb1df146756 186 }
mbed_official 76:aeb1df146756 187 }
mbed_official 76:aeb1df146756 188
mbed_official 76:aeb1df146756 189 /**
mbed_official 76:aeb1df146756 190 * @brief Return the output level (high or low) of the selected comparator.
mbed_official 76:aeb1df146756 191 * @note Comparator output is low when the noninverting input is at a lower
mbed_official 76:aeb1df146756 192 * voltage than the inverting input.
mbed_official 76:aeb1df146756 193 * @note Comparator output is high when the noninverting input is at a higher
mbed_official 76:aeb1df146756 194 * voltage than the inverting input.
mbed_official 76:aeb1df146756 195 * @note Comparators outputs aren't available on GPIO (outputs levels are
mbed_official 76:aeb1df146756 196 * only internal). The COMP1 and COMP2 outputs are connected internally
mbed_official 76:aeb1df146756 197 * to the EXTI Line 21 and Line 22 respectively.
mbed_official 76:aeb1df146756 198 * @param COMP_Selection: the selected comparator.
mbed_official 76:aeb1df146756 199 * This parameter can be one of the following values:
mbed_official 76:aeb1df146756 200 * @arg COMP_Selection_COMP1: COMP1 selected
mbed_official 76:aeb1df146756 201 * @arg COMP_Selection_COMP2: COMP2 selected
mbed_official 76:aeb1df146756 202 * @retval Returns the selected comparator output level.
mbed_official 76:aeb1df146756 203 */
mbed_official 76:aeb1df146756 204 uint8_t COMP_GetOutputLevel(uint32_t COMP_Selection)
mbed_official 76:aeb1df146756 205 {
mbed_official 76:aeb1df146756 206 uint8_t compout = 0x0;
mbed_official 76:aeb1df146756 207
mbed_official 76:aeb1df146756 208 /* Check the parameters */
mbed_official 76:aeb1df146756 209 assert_param(IS_COMP_ALL_PERIPH(COMP_Selection));
mbed_official 76:aeb1df146756 210
mbed_official 76:aeb1df146756 211 /* Check if Comparator 1 is selected */
mbed_official 76:aeb1df146756 212 if(COMP_Selection == COMP_Selection_COMP1)
mbed_official 76:aeb1df146756 213 {
mbed_official 76:aeb1df146756 214 /* Check if comparator 1 output level is high */
mbed_official 76:aeb1df146756 215 if((COMP->CSR & COMP_CSR_CMP1OUT) != (uint8_t) RESET)
mbed_official 76:aeb1df146756 216 {
mbed_official 76:aeb1df146756 217 /* Get Comparator 1 output level */
mbed_official 76:aeb1df146756 218 compout = (uint8_t) COMP_OutputLevel_High;
mbed_official 76:aeb1df146756 219 }
mbed_official 76:aeb1df146756 220 /* comparator 1 output level is low */
mbed_official 76:aeb1df146756 221 else
mbed_official 76:aeb1df146756 222 {
mbed_official 76:aeb1df146756 223 /* Get Comparator 1 output level */
mbed_official 76:aeb1df146756 224 compout = (uint8_t) COMP_OutputLevel_Low;
mbed_official 76:aeb1df146756 225 }
mbed_official 76:aeb1df146756 226 }
mbed_official 76:aeb1df146756 227 /* Comparator 2 is selected */
mbed_official 76:aeb1df146756 228 else
mbed_official 76:aeb1df146756 229 {
mbed_official 76:aeb1df146756 230 /* Check if comparator 2 output level is high */
mbed_official 76:aeb1df146756 231 if((COMP->CSR & COMP_CSR_CMP2OUT) != (uint8_t) RESET)
mbed_official 76:aeb1df146756 232 {
mbed_official 76:aeb1df146756 233 /* Get Comparator output level */
mbed_official 76:aeb1df146756 234 compout = (uint8_t) COMP_OutputLevel_High;
mbed_official 76:aeb1df146756 235 }
mbed_official 76:aeb1df146756 236 /* comparator 2 output level is low */
mbed_official 76:aeb1df146756 237 else
mbed_official 76:aeb1df146756 238 {
mbed_official 76:aeb1df146756 239 /* Get Comparator 2 output level */
mbed_official 76:aeb1df146756 240 compout = (uint8_t) COMP_OutputLevel_Low;
mbed_official 76:aeb1df146756 241 }
mbed_official 76:aeb1df146756 242 }
mbed_official 76:aeb1df146756 243 /* Return the comparator output level */
mbed_official 76:aeb1df146756 244 return (uint8_t)(compout);
mbed_official 76:aeb1df146756 245 }
mbed_official 76:aeb1df146756 246
mbed_official 76:aeb1df146756 247 /**
mbed_official 76:aeb1df146756 248 * @brief Close or Open the SW1 switch.
mbed_official 76:aeb1df146756 249 * @param NewState: new state of the SW1 switch.
mbed_official 76:aeb1df146756 250 * This parameter can be: ENABLE or DISABLE.
mbed_official 76:aeb1df146756 251 * @note ENABLE to close the SW1 switch
mbed_official 76:aeb1df146756 252 * @note DISABLE to open the SW1 switch
mbed_official 76:aeb1df146756 253 * @retval None.
mbed_official 76:aeb1df146756 254 */
mbed_official 76:aeb1df146756 255 void COMP_SW1SwitchConfig(FunctionalState NewState)
mbed_official 76:aeb1df146756 256 {
mbed_official 76:aeb1df146756 257 /* Check the parameters */
mbed_official 76:aeb1df146756 258 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 76:aeb1df146756 259
mbed_official 76:aeb1df146756 260 if (NewState != DISABLE)
mbed_official 76:aeb1df146756 261 {
mbed_official 76:aeb1df146756 262 /* Close SW1 switch */
mbed_official 76:aeb1df146756 263 COMP->CSR |= (uint32_t) COMP_CSR_SW1;
mbed_official 76:aeb1df146756 264 }
mbed_official 76:aeb1df146756 265 else
mbed_official 76:aeb1df146756 266 {
mbed_official 76:aeb1df146756 267 /* Open SW1 switch */
mbed_official 76:aeb1df146756 268 COMP->CSR &= (uint32_t)(~COMP_CSR_SW1);
mbed_official 76:aeb1df146756 269 }
mbed_official 76:aeb1df146756 270 }
mbed_official 76:aeb1df146756 271
mbed_official 76:aeb1df146756 272 /**
mbed_official 76:aeb1df146756 273 * @}
mbed_official 76:aeb1df146756 274 */
mbed_official 76:aeb1df146756 275
mbed_official 76:aeb1df146756 276 /** @defgroup COMP_Group2 Window mode control function
mbed_official 76:aeb1df146756 277 * @brief Window mode control function.
mbed_official 76:aeb1df146756 278 *
mbed_official 76:aeb1df146756 279 @verbatim
mbed_official 76:aeb1df146756 280 ===============================================================================
mbed_official 76:aeb1df146756 281 ##### Window mode control function #####
mbed_official 76:aeb1df146756 282 ===============================================================================
mbed_official 76:aeb1df146756 283
mbed_official 76:aeb1df146756 284 @endverbatim
mbed_official 76:aeb1df146756 285 * @{
mbed_official 76:aeb1df146756 286 */
mbed_official 76:aeb1df146756 287
mbed_official 76:aeb1df146756 288 /**
mbed_official 76:aeb1df146756 289 * @brief Enables or disables the window mode.
mbed_official 76:aeb1df146756 290 * In window mode:
mbed_official 76:aeb1df146756 291 * @note COMP1 inverting input is fixed to VREFINT defining the first
mbed_official 76:aeb1df146756 292 * threshold.
mbed_official 76:aeb1df146756 293 * @note COMP2 inverting input is configurable (DAC_OUT1, DAC_OUT2, VREFINT
mbed_official 76:aeb1df146756 294 * sub-multiples, PB3) defining the second threshold.
mbed_official 76:aeb1df146756 295 * @note COMP1 and COMP2 non inverting inputs are connected together.
mbed_official 76:aeb1df146756 296 * @note In window mode, only the Group 6 (PB4 or PB5) can be used as
mbed_official 76:aeb1df146756 297 * noninverting inputs.
mbed_official 76:aeb1df146756 298 * @param NewState: new state of the window mode.
mbed_official 76:aeb1df146756 299 * This parameter can be ENABLE or DISABLE.
mbed_official 76:aeb1df146756 300 * @retval None
mbed_official 76:aeb1df146756 301 */
mbed_official 76:aeb1df146756 302 void COMP_WindowCmd(FunctionalState NewState)
mbed_official 76:aeb1df146756 303 {
mbed_official 76:aeb1df146756 304 /* Check the parameters */
mbed_official 76:aeb1df146756 305 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 76:aeb1df146756 306
mbed_official 76:aeb1df146756 307 if (NewState != DISABLE)
mbed_official 76:aeb1df146756 308 {
mbed_official 76:aeb1df146756 309 /* Enable the window mode */
mbed_official 76:aeb1df146756 310 COMP->CSR |= (uint32_t) COMP_CSR_WNDWE;
mbed_official 76:aeb1df146756 311 }
mbed_official 76:aeb1df146756 312 else
mbed_official 76:aeb1df146756 313 {
mbed_official 76:aeb1df146756 314 /* Disable the window mode */
mbed_official 76:aeb1df146756 315 COMP->CSR &= (uint32_t)(~COMP_CSR_WNDWE);
mbed_official 76:aeb1df146756 316 }
mbed_official 76:aeb1df146756 317 }
mbed_official 76:aeb1df146756 318
mbed_official 76:aeb1df146756 319 /**
mbed_official 76:aeb1df146756 320 * @}
mbed_official 76:aeb1df146756 321 */
mbed_official 76:aeb1df146756 322
mbed_official 76:aeb1df146756 323 /** @defgroup COMP_Group3 Internal Reference Voltage output function
mbed_official 76:aeb1df146756 324 * @brief Internal Reference Voltage (VREFINT) output function.
mbed_official 76:aeb1df146756 325 *
mbed_official 76:aeb1df146756 326 @verbatim
mbed_official 76:aeb1df146756 327 ===============================================================================
mbed_official 76:aeb1df146756 328 ##### Internal Reference Voltage (VREFINT) output function #####
mbed_official 76:aeb1df146756 329 ===============================================================================
mbed_official 76:aeb1df146756 330
mbed_official 76:aeb1df146756 331 @endverbatim
mbed_official 76:aeb1df146756 332 * @{
mbed_official 76:aeb1df146756 333 */
mbed_official 76:aeb1df146756 334
mbed_official 76:aeb1df146756 335 /**
mbed_official 76:aeb1df146756 336 * @brief Enables or disables the output of internal reference voltage (VREFINT).
mbed_official 76:aeb1df146756 337 * The VREFINT output can be routed to any I/O in group 3: CH8 (PB0) or
mbed_official 76:aeb1df146756 338 * CH9 (PB1).
mbed_official 76:aeb1df146756 339 * To correctly use this function, the SYSCFG_RIIOSwitchConfig() function
mbed_official 76:aeb1df146756 340 * should be called after.
mbed_official 76:aeb1df146756 341 * @param NewState: new state of the Vrefint output.
mbed_official 76:aeb1df146756 342 * This parameter can be: ENABLE or DISABLE.
mbed_official 76:aeb1df146756 343 * @retval None
mbed_official 76:aeb1df146756 344 */
mbed_official 76:aeb1df146756 345 void COMP_VrefintOutputCmd(FunctionalState NewState)
mbed_official 76:aeb1df146756 346 {
mbed_official 76:aeb1df146756 347 /* Check the parameters */
mbed_official 76:aeb1df146756 348 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 76:aeb1df146756 349
mbed_official 76:aeb1df146756 350 if (NewState != DISABLE)
mbed_official 76:aeb1df146756 351 {
mbed_official 76:aeb1df146756 352 /* Enable the output of internal reference voltage */
mbed_official 76:aeb1df146756 353 COMP->CSR |= (uint32_t) COMP_CSR_VREFOUTEN;
mbed_official 76:aeb1df146756 354 }
mbed_official 76:aeb1df146756 355 else
mbed_official 76:aeb1df146756 356 {
mbed_official 76:aeb1df146756 357 /* Disable the output of internal reference voltage */
mbed_official 76:aeb1df146756 358 COMP->CSR &= (uint32_t) (~COMP_CSR_VREFOUTEN);
mbed_official 76:aeb1df146756 359 }
mbed_official 76:aeb1df146756 360 }
mbed_official 76:aeb1df146756 361
mbed_official 76:aeb1df146756 362 /**
mbed_official 76:aeb1df146756 363 * @}
mbed_official 76:aeb1df146756 364 */
mbed_official 76:aeb1df146756 365
mbed_official 76:aeb1df146756 366 /**
mbed_official 76:aeb1df146756 367 * @}
mbed_official 76:aeb1df146756 368 */
mbed_official 76:aeb1df146756 369
mbed_official 76:aeb1df146756 370 /**
mbed_official 76:aeb1df146756 371 * @}
mbed_official 76:aeb1df146756 372 */
mbed_official 76:aeb1df146756 373
mbed_official 76:aeb1df146756 374 /**
mbed_official 76:aeb1df146756 375 * @}
mbed_official 76:aeb1df146756 376 */
mbed_official 76:aeb1df146756 377
mbed_official 76:aeb1df146756 378 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/