Peter Drescher / mbed-F401

mbed library with additional peripherals for ST F401 board

Fork of mbed-src by mbed official

This mbed LIB has additional peripherals for ST F401 board

  • UART2 : PA_3 rx, PA_2 tx
  • UART3 : PC_7 rx, PC_6 tx
  • I2C2 : PB_3 SDA, PB_10 SCL
  • I2C3 : PB_4 SDA, PA_8 SCL

targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_comp.c@106:ced8cbb51063, 2014-02-26 (annotated)

Committer:
mbed_official
Date:
Wed Feb 26 09:45:12 2014 +0000
Revision:
106:ced8cbb51063
Parent:
80:66393a7b209d 
Synchronized with git revision 4222735eff5868389433f0e9271976b39c8115cd



Full URL: https://github.com/mbedmicro/mbed/commit/4222735eff5868389433f0e9271976b39c8115cd/



[NUCLEO_xxx] Update STM32CubeF4 driver V1.0.0 + update license

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 106:ced8cbb51063 59 * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
mbed_official 76:aeb1df146756 60 *
mbed_official 106:ced8cbb51063 61 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 106:ced8cbb51063 62 * are permitted provided that the following conditions are met:
mbed_official 106:ced8cbb51063 63 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 106:ced8cbb51063 64 * this list of conditions and the following disclaimer.
mbed_official 106:ced8cbb51063 65 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 106:ced8cbb51063 66 * this list of conditions and the following disclaimer in the documentation
mbed_official 106:ced8cbb51063 67 * and/or other materials provided with the distribution.
mbed_official 106:ced8cbb51063 68 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 106:ced8cbb51063 69 * may be used to endorse or promote products derived from this software
mbed_official 106:ced8cbb51063 70 * without specific prior written permission.
mbed_official 76:aeb1df146756 71 *
mbed_official 106:ced8cbb51063 72 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 106:ced8cbb51063 73 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 106:ced8cbb51063 74 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 106:ced8cbb51063 75 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 106:ced8cbb51063 76 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 106:ced8cbb51063 77 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 106:ced8cbb51063 78 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 106:ced8cbb51063 79 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 106:ced8cbb51063 80 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 106:ced8cbb51063 81 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 76:aeb1df146756 82 *
mbed_official 76:aeb1df146756 83 ******************************************************************************
mbed_official 76:aeb1df146756 84 */
mbed_official 76:aeb1df146756 85
mbed_official 76:aeb1df146756 86 /* Includes ------------------------------------------------------------------*/
mbed_official 76:aeb1df146756 87 #include "stm32l1xx_comp.h"
mbed_official 76:aeb1df146756 88
mbed_official 76:aeb1df146756 89 /** @addtogroup STM32L1xx_StdPeriph_Driver
mbed_official 76:aeb1df146756 90 * @{
mbed_official 76:aeb1df146756 91 */
mbed_official 76:aeb1df146756 92
mbed_official 76:aeb1df146756 93 /** @defgroup COMP
mbed_official 76:aeb1df146756 94 * @brief COMP driver modules.
mbed_official 76:aeb1df146756 95 * @{
mbed_official 76:aeb1df146756 96 */
mbed_official 76:aeb1df146756 97
mbed_official 76:aeb1df146756 98 /* Private typedef -----------------------------------------------------------*/
mbed_official 76:aeb1df146756 99 /* Private define ------------------------------------------------------------*/
mbed_official 76:aeb1df146756 100 /* Private macro -------------------------------------------------------------*/
mbed_official 76:aeb1df146756 101 /* Private variables ---------------------------------------------------------*/
mbed_official 76:aeb1df146756 102 /* Private function prototypes -----------------------------------------------*/
mbed_official 76:aeb1df146756 103 /* Private functions ---------------------------------------------------------*/
mbed_official 76:aeb1df146756 104
mbed_official 76:aeb1df146756 105 /** @defgroup COMP_Private_Functions
mbed_official 76:aeb1df146756 106 * @{
mbed_official 76:aeb1df146756 107 */
mbed_official 76:aeb1df146756 108
mbed_official 76:aeb1df146756 109 /** @defgroup COMP_Group1 Initialization and Configuration functions
mbed_official 76:aeb1df146756 110 * @brief Initialization and Configuration functions.
mbed_official 76:aeb1df146756 111 *
mbed_official 76:aeb1df146756 112 @verbatim
mbed_official 76:aeb1df146756 113 ===============================================================================
mbed_official 76:aeb1df146756 114 ##### Initialization and Configuration functions #####
mbed_official 76:aeb1df146756 115 ===============================================================================
mbed_official 76:aeb1df146756 116
mbed_official 76:aeb1df146756 117 @endverbatim
mbed_official 76:aeb1df146756 118 * @{
mbed_official 76:aeb1df146756 119 */
mbed_official 76:aeb1df146756 120
mbed_official 76:aeb1df146756 121 /**
mbed_official 76:aeb1df146756 122 * @brief Deinitializes COMP peripheral registers to their default reset values.
mbed_official 76:aeb1df146756 123 * @param None
mbed_official 76:aeb1df146756 124 * @retval None
mbed_official 76:aeb1df146756 125 */
mbed_official 76:aeb1df146756 126 void COMP_DeInit(void)
mbed_official 76:aeb1df146756 127 {
mbed_official 76:aeb1df146756 128 COMP->CSR = ((uint32_t)0x00000000); /*!< Set COMP->CSR to reset value */
mbed_official 76:aeb1df146756 129 }
mbed_official 76:aeb1df146756 130
mbed_official 76:aeb1df146756 131 /**
mbed_official 76:aeb1df146756 132 * @brief Initializes the COMP2 peripheral according to the specified parameters
mbed_official 76:aeb1df146756 133 * in the COMP_InitStruct.
mbed_official 76:aeb1df146756 134 * @note This function configures only COMP2.
mbed_official 76:aeb1df146756 135 * @note COMP2 comparator is enabled as soon as the INSEL[2:0] bits are
mbed_official 76:aeb1df146756 136 * different from "000".
mbed_official 76:aeb1df146756 137 * @param COMP_InitStruct: pointer to an COMP_InitTypeDef structure that contains
mbed_official 76:aeb1df146756 138 * the configuration information for the specified COMP peripheral.
mbed_official 76:aeb1df146756 139 * @retval None
mbed_official 76:aeb1df146756 140 */
mbed_official 76:aeb1df146756 141 void COMP_Init(COMP_InitTypeDef* COMP_InitStruct)
mbed_official 76:aeb1df146756 142 {
mbed_official 76:aeb1df146756 143 uint32_t tmpreg = 0;
mbed_official 76:aeb1df146756 144
mbed_official 76:aeb1df146756 145 /* Check the parameters */
mbed_official 76:aeb1df146756 146 assert_param(IS_COMP_INVERTING_INPUT(COMP_InitStruct->COMP_InvertingInput));
mbed_official 76:aeb1df146756 147 assert_param(IS_COMP_OUTPUT(COMP_InitStruct->COMP_OutputSelect));
mbed_official 76:aeb1df146756 148 assert_param(IS_COMP_SPEED(COMP_InitStruct->COMP_Speed));
mbed_official 76:aeb1df146756 149
mbed_official 76:aeb1df146756 150 /*!< Get the COMP CSR value */
mbed_official 76:aeb1df146756 151 tmpreg = COMP->CSR;
mbed_official 76:aeb1df146756 152
mbed_official 76:aeb1df146756 153 /*!< Clear the INSEL[2:0], OUTSEL[1:0] and SPEED bits */
mbed_official 76:aeb1df146756 154 tmpreg &= (uint32_t) (~(uint32_t) (COMP_CSR_OUTSEL | COMP_CSR_INSEL | COMP_CSR_SPEED));
mbed_official 76:aeb1df146756 155
mbed_official 76:aeb1df146756 156 /*!< Configure COMP: speed, inversion input selection and output redirection */
mbed_official 76:aeb1df146756 157 /*!< Set SPEED bit according to COMP_InitStruct->COMP_Speed value */
mbed_official 76:aeb1df146756 158 /*!< Set INSEL bits according to COMP_InitStruct->COMP_InvertingInput value */
mbed_official 76:aeb1df146756 159 /*!< Set OUTSEL bits according to COMP_InitStruct->COMP_OutputSelect value */
mbed_official 76:aeb1df146756 160 tmpreg |= (uint32_t)((COMP_InitStruct->COMP_Speed | COMP_InitStruct->COMP_InvertingInput
mbed_official 76:aeb1df146756 161 | COMP_InitStruct->COMP_OutputSelect));
mbed_official 76:aeb1df146756 162
mbed_official 76:aeb1df146756 163 /*!< The COMP2 comparator is enabled as soon as the INSEL[2:0] bits value are
mbed_official 76:aeb1df146756 164 different from "000" */
mbed_official 76:aeb1df146756 165 /*!< Write to COMP_CSR register */
mbed_official 76:aeb1df146756 166 COMP->CSR = tmpreg;
mbed_official 76:aeb1df146756 167 }
mbed_official 76:aeb1df146756 168
mbed_official 76:aeb1df146756 169 /**
mbed_official 76:aeb1df146756 170 * @brief Enable or disable the COMP1 peripheral.
mbed_official 76:aeb1df146756 171 * @note After enabling COMP1, the following functions should be called to
mbed_official 76:aeb1df146756 172 * connect the selected GPIO input to COMP1 non inverting input:
mbed_official 76:aeb1df146756 173 * @note Enable switch control mode using SYSCFG_RISwitchControlModeCmd()
mbed_official 76:aeb1df146756 174 * @note Close VCOMP switch using SYSCFG_RIIOSwitchConfig()
mbed_official 76:aeb1df146756 175 * @note Close the I/O switch number n corresponding to the I/O
mbed_official 76:aeb1df146756 176 * using SYSCFG_RIIOSwitchConfig()
mbed_official 76:aeb1df146756 177 * @param NewState: new state of the COMP1 peripheral.
mbed_official 76:aeb1df146756 178 * This parameter can be: ENABLE or DISABLE.
mbed_official 76:aeb1df146756 179 * @note This function enables/disables only the COMP1.
mbed_official 76:aeb1df146756 180 * @retval None
mbed_official 76:aeb1df146756 181 */
mbed_official 76:aeb1df146756 182 void COMP_Cmd(FunctionalState NewState)
mbed_official 76:aeb1df146756 183 {
mbed_official 76:aeb1df146756 184 /* Check the parameter */
mbed_official 76:aeb1df146756 185 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 76:aeb1df146756 186
mbed_official 76:aeb1df146756 187 if (NewState != DISABLE)
mbed_official 76:aeb1df146756 188 {
mbed_official 76:aeb1df146756 189 /* Enable the COMP1 */
mbed_official 76:aeb1df146756 190 COMP->CSR |= (uint32_t) COMP_CSR_CMP1EN;
mbed_official 76:aeb1df146756 191 }
mbed_official 76:aeb1df146756 192 else
mbed_official 76:aeb1df146756 193 {
mbed_official 76:aeb1df146756 194 /* Disable the COMP1 */
mbed_official 76:aeb1df146756 195 COMP->CSR &= (uint32_t)(~COMP_CSR_CMP1EN);
mbed_official 76:aeb1df146756 196 }
mbed_official 76:aeb1df146756 197 }
mbed_official 76:aeb1df146756 198
mbed_official 76:aeb1df146756 199 /**
mbed_official 76:aeb1df146756 200 * @brief Return the output level (high or low) of the selected comparator.
mbed_official 76:aeb1df146756 201 * @note Comparator output is low when the noninverting input is at a lower
mbed_official 76:aeb1df146756 202 * voltage than the inverting input.
mbed_official 76:aeb1df146756 203 * @note Comparator output is high when the noninverting input is at a higher
mbed_official 76:aeb1df146756 204 * voltage than the inverting input.
mbed_official 76:aeb1df146756 205 * @note Comparators outputs aren't available on GPIO (outputs levels are
mbed_official 76:aeb1df146756 206 * only internal). The COMP1 and COMP2 outputs are connected internally
mbed_official 76:aeb1df146756 207 * to the EXTI Line 21 and Line 22 respectively.
mbed_official 76:aeb1df146756 208 * @param COMP_Selection: the selected comparator.
mbed_official 76:aeb1df146756 209 * This parameter can be one of the following values:
mbed_official 76:aeb1df146756 210 * @arg COMP_Selection_COMP1: COMP1 selected
mbed_official 76:aeb1df146756 211 * @arg COMP_Selection_COMP2: COMP2 selected
mbed_official 76:aeb1df146756 212 * @retval Returns the selected comparator output level.
mbed_official 76:aeb1df146756 213 */
mbed_official 76:aeb1df146756 214 uint8_t COMP_GetOutputLevel(uint32_t COMP_Selection)
mbed_official 76:aeb1df146756 215 {
mbed_official 76:aeb1df146756 216 uint8_t compout = 0x0;
mbed_official 76:aeb1df146756 217
mbed_official 76:aeb1df146756 218 /* Check the parameters */
mbed_official 76:aeb1df146756 219 assert_param(IS_COMP_ALL_PERIPH(COMP_Selection));
mbed_official 76:aeb1df146756 220
mbed_official 76:aeb1df146756 221 /* Check if Comparator 1 is selected */
mbed_official 76:aeb1df146756 222 if(COMP_Selection == COMP_Selection_COMP1)
mbed_official 76:aeb1df146756 223 {
mbed_official 76:aeb1df146756 224 /* Check if comparator 1 output level is high */
mbed_official 76:aeb1df146756 225 if((COMP->CSR & COMP_CSR_CMP1OUT) != (uint8_t) RESET)
mbed_official 76:aeb1df146756 226 {
mbed_official 76:aeb1df146756 227 /* Get Comparator 1 output level */
mbed_official 76:aeb1df146756 228 compout = (uint8_t) COMP_OutputLevel_High;
mbed_official 76:aeb1df146756 229 }
mbed_official 76:aeb1df146756 230 /* comparator 1 output level is low */
mbed_official 76:aeb1df146756 231 else
mbed_official 76:aeb1df146756 232 {
mbed_official 76:aeb1df146756 233 /* Get Comparator 1 output level */
mbed_official 76:aeb1df146756 234 compout = (uint8_t) COMP_OutputLevel_Low;
mbed_official 76:aeb1df146756 235 }
mbed_official 76:aeb1df146756 236 }
mbed_official 76:aeb1df146756 237 /* Comparator 2 is selected */
mbed_official 76:aeb1df146756 238 else
mbed_official 76:aeb1df146756 239 {
mbed_official 76:aeb1df146756 240 /* Check if comparator 2 output level is high */
mbed_official 76:aeb1df146756 241 if((COMP->CSR & COMP_CSR_CMP2OUT) != (uint8_t) RESET)
mbed_official 76:aeb1df146756 242 {
mbed_official 76:aeb1df146756 243 /* Get Comparator output level */
mbed_official 76:aeb1df146756 244 compout = (uint8_t) COMP_OutputLevel_High;
mbed_official 76:aeb1df146756 245 }
mbed_official 76:aeb1df146756 246 /* comparator 2 output level is low */
mbed_official 76:aeb1df146756 247 else
mbed_official 76:aeb1df146756 248 {
mbed_official 76:aeb1df146756 249 /* Get Comparator 2 output level */
mbed_official 76:aeb1df146756 250 compout = (uint8_t) COMP_OutputLevel_Low;
mbed_official 76:aeb1df146756 251 }
mbed_official 76:aeb1df146756 252 }
mbed_official 76:aeb1df146756 253 /* Return the comparator output level */
mbed_official 76:aeb1df146756 254 return (uint8_t)(compout);
mbed_official 76:aeb1df146756 255 }
mbed_official 76:aeb1df146756 256
mbed_official 76:aeb1df146756 257 /**
mbed_official 76:aeb1df146756 258 * @brief Close or Open the SW1 switch.
mbed_official 76:aeb1df146756 259 * @param NewState: new state of the SW1 switch.
mbed_official 76:aeb1df146756 260 * This parameter can be: ENABLE or DISABLE.
mbed_official 76:aeb1df146756 261 * @note ENABLE to close the SW1 switch
mbed_official 76:aeb1df146756 262 * @note DISABLE to open the SW1 switch
mbed_official 76:aeb1df146756 263 * @retval None.
mbed_official 76:aeb1df146756 264 */
mbed_official 76:aeb1df146756 265 void COMP_SW1SwitchConfig(FunctionalState NewState)
mbed_official 76:aeb1df146756 266 {
mbed_official 76:aeb1df146756 267 /* Check the parameters */
mbed_official 76:aeb1df146756 268 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 76:aeb1df146756 269
mbed_official 76:aeb1df146756 270 if (NewState != DISABLE)
mbed_official 76:aeb1df146756 271 {
mbed_official 76:aeb1df146756 272 /* Close SW1 switch */
mbed_official 76:aeb1df146756 273 COMP->CSR |= (uint32_t) COMP_CSR_SW1;
mbed_official 76:aeb1df146756 274 }
mbed_official 76:aeb1df146756 275 else
mbed_official 76:aeb1df146756 276 {
mbed_official 76:aeb1df146756 277 /* Open SW1 switch */
mbed_official 76:aeb1df146756 278 COMP->CSR &= (uint32_t)(~COMP_CSR_SW1);
mbed_official 76:aeb1df146756 279 }
mbed_official 76:aeb1df146756 280 }
mbed_official 76:aeb1df146756 281
mbed_official 76:aeb1df146756 282 /**
mbed_official 76:aeb1df146756 283 * @}
mbed_official 76:aeb1df146756 284 */
mbed_official 76:aeb1df146756 285
mbed_official 76:aeb1df146756 286 /** @defgroup COMP_Group2 Window mode control function
mbed_official 76:aeb1df146756 287 * @brief Window mode control function.
mbed_official 76:aeb1df146756 288 *
mbed_official 76:aeb1df146756 289 @verbatim
mbed_official 76:aeb1df146756 290 ===============================================================================
mbed_official 76:aeb1df146756 291 ##### Window mode control function #####
mbed_official 76:aeb1df146756 292 ===============================================================================
mbed_official 76:aeb1df146756 293
mbed_official 76:aeb1df146756 294 @endverbatim
mbed_official 76:aeb1df146756 295 * @{
mbed_official 76:aeb1df146756 296 */
mbed_official 76:aeb1df146756 297
mbed_official 76:aeb1df146756 298 /**
mbed_official 76:aeb1df146756 299 * @brief Enables or disables the window mode.
mbed_official 76:aeb1df146756 300 * In window mode:
mbed_official 76:aeb1df146756 301 * @note COMP1 inverting input is fixed to VREFINT defining the first
mbed_official 76:aeb1df146756 302 * threshold.
mbed_official 76:aeb1df146756 303 * @note COMP2 inverting input is configurable (DAC_OUT1, DAC_OUT2, VREFINT
mbed_official 76:aeb1df146756 304 * sub-multiples, PB3) defining the second threshold.
mbed_official 76:aeb1df146756 305 * @note COMP1 and COMP2 non inverting inputs are connected together.
mbed_official 76:aeb1df146756 306 * @note In window mode, only the Group 6 (PB4 or PB5) can be used as
mbed_official 76:aeb1df146756 307 * noninverting inputs.
mbed_official 76:aeb1df146756 308 * @param NewState: new state of the window mode.
mbed_official 76:aeb1df146756 309 * This parameter can be ENABLE or DISABLE.
mbed_official 76:aeb1df146756 310 * @retval None
mbed_official 76:aeb1df146756 311 */
mbed_official 76:aeb1df146756 312 void COMP_WindowCmd(FunctionalState NewState)
mbed_official 76:aeb1df146756 313 {
mbed_official 76:aeb1df146756 314 /* Check the parameters */
mbed_official 76:aeb1df146756 315 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 76:aeb1df146756 316
mbed_official 76:aeb1df146756 317 if (NewState != DISABLE)
mbed_official 76:aeb1df146756 318 {
mbed_official 76:aeb1df146756 319 /* Enable the window mode */
mbed_official 76:aeb1df146756 320 COMP->CSR |= (uint32_t) COMP_CSR_WNDWE;
mbed_official 76:aeb1df146756 321 }
mbed_official 76:aeb1df146756 322 else
mbed_official 76:aeb1df146756 323 {
mbed_official 76:aeb1df146756 324 /* Disable the window mode */
mbed_official 76:aeb1df146756 325 COMP->CSR &= (uint32_t)(~COMP_CSR_WNDWE);
mbed_official 76:aeb1df146756 326 }
mbed_official 76:aeb1df146756 327 }
mbed_official 76:aeb1df146756 328
mbed_official 76:aeb1df146756 329 /**
mbed_official 76:aeb1df146756 330 * @}
mbed_official 76:aeb1df146756 331 */
mbed_official 76:aeb1df146756 332
mbed_official 76:aeb1df146756 333 /** @defgroup COMP_Group3 Internal Reference Voltage output function
mbed_official 76:aeb1df146756 334 * @brief Internal Reference Voltage (VREFINT) output function.
mbed_official 76:aeb1df146756 335 *
mbed_official 76:aeb1df146756 336 @verbatim
mbed_official 76:aeb1df146756 337 ===============================================================================
mbed_official 76:aeb1df146756 338 ##### Internal Reference Voltage (VREFINT) output function #####
mbed_official 76:aeb1df146756 339 ===============================================================================
mbed_official 76:aeb1df146756 340
mbed_official 76:aeb1df146756 341 @endverbatim
mbed_official 76:aeb1df146756 342 * @{
mbed_official 76:aeb1df146756 343 */
mbed_official 76:aeb1df146756 344
mbed_official 76:aeb1df146756 345 /**
mbed_official 76:aeb1df146756 346 * @brief Enables or disables the output of internal reference voltage (VREFINT).
mbed_official 76:aeb1df146756 347 * The VREFINT output can be routed to any I/O in group 3: CH8 (PB0) or
mbed_official 76:aeb1df146756 348 * CH9 (PB1).
mbed_official 76:aeb1df146756 349 * To correctly use this function, the SYSCFG_RIIOSwitchConfig() function
mbed_official 76:aeb1df146756 350 * should be called after.
mbed_official 76:aeb1df146756 351 * @param NewState: new state of the Vrefint output.
mbed_official 76:aeb1df146756 352 * This parameter can be: ENABLE or DISABLE.
mbed_official 76:aeb1df146756 353 * @retval None
mbed_official 76:aeb1df146756 354 */
mbed_official 76:aeb1df146756 355 void COMP_VrefintOutputCmd(FunctionalState NewState)
mbed_official 76:aeb1df146756 356 {
mbed_official 76:aeb1df146756 357 /* Check the parameters */
mbed_official 76:aeb1df146756 358 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 76:aeb1df146756 359
mbed_official 76:aeb1df146756 360 if (NewState != DISABLE)
mbed_official 76:aeb1df146756 361 {
mbed_official 76:aeb1df146756 362 /* Enable the output of internal reference voltage */
mbed_official 76:aeb1df146756 363 COMP->CSR |= (uint32_t) COMP_CSR_VREFOUTEN;
mbed_official 76:aeb1df146756 364 }
mbed_official 76:aeb1df146756 365 else
mbed_official 76:aeb1df146756 366 {
mbed_official 76:aeb1df146756 367 /* Disable the output of internal reference voltage */
mbed_official 76:aeb1df146756 368 COMP->CSR &= (uint32_t) (~COMP_CSR_VREFOUTEN);
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 */
mbed_official 76:aeb1df146756 379
mbed_official 76:aeb1df146756 380 /**
mbed_official 76:aeb1df146756 381 * @}
mbed_official 76:aeb1df146756 382 */
mbed_official 76:aeb1df146756 383
mbed_official 76:aeb1df146756 384 /**
mbed_official 76:aeb1df146756 385 * @}
mbed_official 76:aeb1df146756 386 */
mbed_official 76:aeb1df146756 387
mbed_official 76:aeb1df146756 388 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/