siva surendar / mbed-dev

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Fork of mbed-dev by mbed official

targets/TARGET_STM/TARGET_STM32L4/device/stm32l4xx_ll_opamp.c@149:156823d33999, 2016-10-28 (annotated)

Committer:
<>
Date:
Fri Oct 28 11:17:30 2016 +0100
Revision:
149:156823d33999
Parent:
targets/cmsis/TARGET_STM/TARGET_STM32L4/stm32l4xx_ll_opamp.c@144:ef7eb2e8f9f7 
This updates the lib to the mbed lib v128



NOTE: This release includes a restructuring of the file and directory locations and thus some

include paths in your code may need updating accordingly.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /**
<> 144:ef7eb2e8f9f7 2 ******************************************************************************
<> 144:ef7eb2e8f9f7 3 * @file stm32l4xx_ll_opamp.c
<> 144:ef7eb2e8f9f7 4 * @author MCD Application Team
<> 144:ef7eb2e8f9f7 5 * @version V1.5.1
<> 144:ef7eb2e8f9f7 6 * @date 31-May-2016
<> 144:ef7eb2e8f9f7 7 * @brief OPAMP LL module driver
<> 144:ef7eb2e8f9f7 8 ******************************************************************************
<> 144:ef7eb2e8f9f7 9 * @attention
<> 144:ef7eb2e8f9f7 10 *
<> 144:ef7eb2e8f9f7 11 * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
<> 144:ef7eb2e8f9f7 12 *
<> 144:ef7eb2e8f9f7 13 * Redistribution and use in source and binary forms, with or without modification,
<> 144:ef7eb2e8f9f7 14 * are permitted provided that the following conditions are met:
<> 144:ef7eb2e8f9f7 15 * 1. Redistributions of source code must retain the above copyright notice,
<> 144:ef7eb2e8f9f7 16 * this list of conditions and the following disclaimer.
<> 144:ef7eb2e8f9f7 17 * 2. Redistributions in binary form must reproduce the above copyright notice,
<> 144:ef7eb2e8f9f7 18 * this list of conditions and the following disclaimer in the documentation
<> 144:ef7eb2e8f9f7 19 * and/or other materials provided with the distribution.
<> 144:ef7eb2e8f9f7 20 * 3. Neither the name of STMicroelectronics nor the names of its contributors
<> 144:ef7eb2e8f9f7 21 * may be used to endorse or promote products derived from this software
<> 144:ef7eb2e8f9f7 22 * without specific prior written permission.
<> 144:ef7eb2e8f9f7 23 *
<> 144:ef7eb2e8f9f7 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
<> 144:ef7eb2e8f9f7 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
<> 144:ef7eb2e8f9f7 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 144:ef7eb2e8f9f7 27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
<> 144:ef7eb2e8f9f7 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
<> 144:ef7eb2e8f9f7 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
<> 144:ef7eb2e8f9f7 30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
<> 144:ef7eb2e8f9f7 31 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
<> 144:ef7eb2e8f9f7 32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
<> 144:ef7eb2e8f9f7 33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 144:ef7eb2e8f9f7 34 *
<> 144:ef7eb2e8f9f7 35 ******************************************************************************
<> 144:ef7eb2e8f9f7 36 */
<> 144:ef7eb2e8f9f7 37 #if defined(USE_FULL_LL_DRIVER)
<> 144:ef7eb2e8f9f7 38
<> 144:ef7eb2e8f9f7 39 /* Includes ------------------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 40 #include "stm32l4xx_ll_opamp.h"
<> 144:ef7eb2e8f9f7 41
<> 144:ef7eb2e8f9f7 42 #ifdef USE_FULL_ASSERT
<> 144:ef7eb2e8f9f7 43 #include "stm32_assert.h"
<> 144:ef7eb2e8f9f7 44 #else
<> 144:ef7eb2e8f9f7 45 #define assert_param(expr) ((void)0U)
<> 144:ef7eb2e8f9f7 46 #endif
<> 144:ef7eb2e8f9f7 47
<> 144:ef7eb2e8f9f7 48 /** @addtogroup STM32L4xx_LL_Driver
<> 144:ef7eb2e8f9f7 49 * @{
<> 144:ef7eb2e8f9f7 50 */
<> 144:ef7eb2e8f9f7 51
<> 144:ef7eb2e8f9f7 52 #if defined (OPAMP1) || defined (OPAMP2)
<> 144:ef7eb2e8f9f7 53
<> 144:ef7eb2e8f9f7 54 /** @addtogroup OPAMP_LL OPAMP
<> 144:ef7eb2e8f9f7 55 * @{
<> 144:ef7eb2e8f9f7 56 */
<> 144:ef7eb2e8f9f7 57
<> 144:ef7eb2e8f9f7 58 /* Private types -------------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 59 /* Private variables ---------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 60 /* Private constants ---------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 61 /* Private macros ------------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 62
<> 144:ef7eb2e8f9f7 63 /** @addtogroup OPAMP_LL_Private_Macros
<> 144:ef7eb2e8f9f7 64 * @{
<> 144:ef7eb2e8f9f7 65 */
<> 144:ef7eb2e8f9f7 66
<> 144:ef7eb2e8f9f7 67 /* Check of parameters for configuration of OPAMP hierarchical scope: */
<> 144:ef7eb2e8f9f7 68 /* OPAMP instance. */
<> 144:ef7eb2e8f9f7 69
<> 144:ef7eb2e8f9f7 70 #define IS_LL_OPAMP_POWER_MODE(__POWER_MODE__) \
<> 144:ef7eb2e8f9f7 71 ( ((__POWER_MODE__) == LL_OPAMP_POWERMODE_NORMAL) \
<> 144:ef7eb2e8f9f7 72 || ((__POWER_MODE__) == LL_OPAMP_POWERMODE_LOWPOWER))
<> 144:ef7eb2e8f9f7 73
<> 144:ef7eb2e8f9f7 74 #define IS_LL_OPAMP_FUNCTIONAL_MODE(__FUNCTIONAL_MODE__) \
<> 144:ef7eb2e8f9f7 75 ( ((__FUNCTIONAL_MODE__) == LL_OPAMP_MODE_STANDALONE) \
<> 144:ef7eb2e8f9f7 76 || ((__FUNCTIONAL_MODE__) == LL_OPAMP_MODE_FOLLOWER) \
<> 144:ef7eb2e8f9f7 77 || ((__FUNCTIONAL_MODE__) == LL_OPAMP_MODE_PGA) \
<> 144:ef7eb2e8f9f7 78 )
<> 144:ef7eb2e8f9f7 79
<> 144:ef7eb2e8f9f7 80 /* Note: Comparator non-inverting inputs parameters are the same on all */
<> 144:ef7eb2e8f9f7 81 /* OPAMP instances. */
<> 144:ef7eb2e8f9f7 82 /* However, comparator instance kept as macro parameter for */
<> 144:ef7eb2e8f9f7 83 /* compatibility with other STM32 families. */
<> 144:ef7eb2e8f9f7 84 #define IS_LL_OPAMP_INPUT_NONINVERTING(__OPAMPX__, __INPUT_NONINVERTING__) \
<> 144:ef7eb2e8f9f7 85 ( ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINVERT_IO0) \
<> 144:ef7eb2e8f9f7 86 || ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINVERT_DAC1_CH1) \
<> 144:ef7eb2e8f9f7 87 )
<> 144:ef7eb2e8f9f7 88
<> 144:ef7eb2e8f9f7 89 /* Note: Comparator non-inverting inputs parameters are the same on all */
<> 144:ef7eb2e8f9f7 90 /* OPAMP instances. */
<> 144:ef7eb2e8f9f7 91 /* However, comparator instance kept as macro parameter for */
<> 144:ef7eb2e8f9f7 92 /* compatibility with other STM32 families. */
<> 144:ef7eb2e8f9f7 93 #define IS_LL_OPAMP_INPUT_INVERTING(__OPAMPX__, __INPUT_INVERTING__) \
<> 144:ef7eb2e8f9f7 94 ( ((__INPUT_INVERTING__) == LL_OPAMP_INPUT_INVERT_IO0) \
<> 144:ef7eb2e8f9f7 95 || ((__INPUT_INVERTING__) == LL_OPAMP_INPUT_INVERT_IO1) \
<> 144:ef7eb2e8f9f7 96 || ((__INPUT_INVERTING__) == LL_OPAMP_INPUT_INVERT_CONNECT_NO) \
<> 144:ef7eb2e8f9f7 97 )
<> 144:ef7eb2e8f9f7 98
<> 144:ef7eb2e8f9f7 99 /**
<> 144:ef7eb2e8f9f7 100 * @}
<> 144:ef7eb2e8f9f7 101 */
<> 144:ef7eb2e8f9f7 102
<> 144:ef7eb2e8f9f7 103
<> 144:ef7eb2e8f9f7 104 /* Private function prototypes -----------------------------------------------*/
<> 144:ef7eb2e8f9f7 105
<> 144:ef7eb2e8f9f7 106 /* Exported functions --------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 107 /** @addtogroup OPAMP_LL_Exported_Functions
<> 144:ef7eb2e8f9f7 108 * @{
<> 144:ef7eb2e8f9f7 109 */
<> 144:ef7eb2e8f9f7 110
<> 144:ef7eb2e8f9f7 111 /** @addtogroup OPAMP_LL_EF_Init
<> 144:ef7eb2e8f9f7 112 * @{
<> 144:ef7eb2e8f9f7 113 */
<> 144:ef7eb2e8f9f7 114
<> 144:ef7eb2e8f9f7 115 /**
<> 144:ef7eb2e8f9f7 116 * @brief De-initialize registers of the selected OPAMP instance
<> 144:ef7eb2e8f9f7 117 * to their default reset values.
<> 144:ef7eb2e8f9f7 118 * @param OPAMPx OPAMP instance
<> 144:ef7eb2e8f9f7 119 * @retval An ErrorStatus enumeration value:
<> 144:ef7eb2e8f9f7 120 * - SUCCESS: OPAMP registers are de-initialized
<> 144:ef7eb2e8f9f7 121 * - ERROR: OPAMP registers are not de-initialized
<> 144:ef7eb2e8f9f7 122 */
<> 144:ef7eb2e8f9f7 123 ErrorStatus LL_OPAMP_DeInit(OPAMP_TypeDef* OPAMPx)
<> 144:ef7eb2e8f9f7 124 {
<> 144:ef7eb2e8f9f7 125 ErrorStatus status = SUCCESS;
<> 144:ef7eb2e8f9f7 126
<> 144:ef7eb2e8f9f7 127 /* Check the parameters */
<> 144:ef7eb2e8f9f7 128 assert_param(IS_OPAMP_ALL_INSTANCE(OPAMPx));
<> 144:ef7eb2e8f9f7 129
<> 144:ef7eb2e8f9f7 130 LL_OPAMP_WriteReg(OPAMPx, CSR, 0x00000000U);
<> 144:ef7eb2e8f9f7 131
<> 144:ef7eb2e8f9f7 132 return status;
<> 144:ef7eb2e8f9f7 133 }
<> 144:ef7eb2e8f9f7 134
<> 144:ef7eb2e8f9f7 135 /**
<> 144:ef7eb2e8f9f7 136 * @brief Initialize some features of OPAMP instance.
<> 144:ef7eb2e8f9f7 137 * @note This function reset bit of calibration mode to ensure
<> 144:ef7eb2e8f9f7 138 * to be in functional mode, in order to have OPAMP parameters
<> 144:ef7eb2e8f9f7 139 * (inputs selection, ...) set with the corresponding OPAMP mode
<> 144:ef7eb2e8f9f7 140 * to be effective.
<> 144:ef7eb2e8f9f7 141 * @note This function configures features of the selected OPAMP instance.
<> 144:ef7eb2e8f9f7 142 * Some features are also available at scope OPAMP common instance
<> 144:ef7eb2e8f9f7 143 * (common to several OPAMP instances).
<> 144:ef7eb2e8f9f7 144 * Refer to functions having argument "OPAMPxy_COMMON" as parameter.
<> 144:ef7eb2e8f9f7 145 * @param OPAMPx OPAMP instance
<> 144:ef7eb2e8f9f7 146 * @param OPAMP_InitStruct Pointer to a @ref LL_OPAMP_InitTypeDef structure
<> 144:ef7eb2e8f9f7 147 * @retval An ErrorStatus enumeration value:
<> 144:ef7eb2e8f9f7 148 * - SUCCESS: OPAMP registers are initialized
<> 144:ef7eb2e8f9f7 149 * - ERROR: OPAMP registers are not initialized
<> 144:ef7eb2e8f9f7 150 */
<> 144:ef7eb2e8f9f7 151 ErrorStatus LL_OPAMP_Init(OPAMP_TypeDef *OPAMPx, LL_OPAMP_InitTypeDef *OPAMP_InitStruct)
<> 144:ef7eb2e8f9f7 152 {
<> 144:ef7eb2e8f9f7 153 /* Check the parameters */
<> 144:ef7eb2e8f9f7 154 assert_param(IS_OPAMP_ALL_INSTANCE(OPAMPx));
<> 144:ef7eb2e8f9f7 155 assert_param(IS_LL_OPAMP_POWER_MODE(OPAMP_InitStruct->PowerMode));
<> 144:ef7eb2e8f9f7 156 assert_param(IS_LL_OPAMP_FUNCTIONAL_MODE(OPAMP_InitStruct->FunctionalMode));
<> 144:ef7eb2e8f9f7 157 assert_param(IS_LL_OPAMP_INPUT_NONINVERTING(OPAMPx, OPAMP_InitStruct->InputNonInverting));
<> 144:ef7eb2e8f9f7 158
<> 144:ef7eb2e8f9f7 159 /* Note: OPAMP inverting input can be used with OPAMP in mode standalone */
<> 144:ef7eb2e8f9f7 160 /* or PGA with external capacitors for filtering circuit. */
<> 144:ef7eb2e8f9f7 161 /* Otherwise (OPAMP in mode follower), OPAMP inverting input is */
<> 144:ef7eb2e8f9f7 162 /* not used (not connected to GPIO pin). */
<> 144:ef7eb2e8f9f7 163 if(OPAMP_InitStruct->FunctionalMode != LL_OPAMP_MODE_FOLLOWER)
<> 144:ef7eb2e8f9f7 164 {
<> 144:ef7eb2e8f9f7 165 assert_param(IS_LL_OPAMP_INPUT_INVERTING(OPAMPx, OPAMP_InitStruct->InputInverting));
<> 144:ef7eb2e8f9f7 166 }
<> 144:ef7eb2e8f9f7 167
<> 144:ef7eb2e8f9f7 168 /* Configuration of OPAMP instance : */
<> 144:ef7eb2e8f9f7 169 /* - PowerMode */
<> 144:ef7eb2e8f9f7 170 /* - Functional mode */
<> 144:ef7eb2e8f9f7 171 /* - Input non-inverting */
<> 144:ef7eb2e8f9f7 172 /* - Input inverting */
<> 144:ef7eb2e8f9f7 173 /* Note: Bit OPAMP_CSR_CALON reset to ensure to be in functional mode. */
<> 144:ef7eb2e8f9f7 174 if(OPAMP_InitStruct->FunctionalMode != LL_OPAMP_MODE_FOLLOWER)
<> 144:ef7eb2e8f9f7 175 {
<> 144:ef7eb2e8f9f7 176 MODIFY_REG(OPAMPx->CSR,
<> 144:ef7eb2e8f9f7 177 OPAMP_CSR_OPALPM
<> 144:ef7eb2e8f9f7 178 | OPAMP_CSR_OPAMODE
<> 144:ef7eb2e8f9f7 179 | OPAMP_CSR_CALON
<> 144:ef7eb2e8f9f7 180 | OPAMP_CSR_VMSEL
<> 144:ef7eb2e8f9f7 181 | OPAMP_CSR_VPSEL
<> 144:ef7eb2e8f9f7 182 ,
<> 144:ef7eb2e8f9f7 183 (OPAMP_InitStruct->PowerMode & OPAMP_POWERMODE_CSR_BIT_MASK)
<> 144:ef7eb2e8f9f7 184 | OPAMP_InitStruct->FunctionalMode
<> 144:ef7eb2e8f9f7 185 | OPAMP_InitStruct->InputNonInverting
<> 144:ef7eb2e8f9f7 186 | OPAMP_InitStruct->InputInverting
<> 144:ef7eb2e8f9f7 187 );
<> 144:ef7eb2e8f9f7 188 }
<> 144:ef7eb2e8f9f7 189 else
<> 144:ef7eb2e8f9f7 190 {
<> 144:ef7eb2e8f9f7 191 MODIFY_REG(OPAMPx->CSR,
<> 144:ef7eb2e8f9f7 192 OPAMP_CSR_OPALPM
<> 144:ef7eb2e8f9f7 193 | OPAMP_CSR_OPAMODE
<> 144:ef7eb2e8f9f7 194 | OPAMP_CSR_CALON
<> 144:ef7eb2e8f9f7 195 | OPAMP_CSR_VMSEL
<> 144:ef7eb2e8f9f7 196 | OPAMP_CSR_VPSEL
<> 144:ef7eb2e8f9f7 197 ,
<> 144:ef7eb2e8f9f7 198 (OPAMP_InitStruct->PowerMode & OPAMP_POWERMODE_CSR_BIT_MASK)
<> 144:ef7eb2e8f9f7 199 | LL_OPAMP_MODE_FOLLOWER
<> 144:ef7eb2e8f9f7 200 | OPAMP_InitStruct->InputNonInverting
<> 144:ef7eb2e8f9f7 201 | LL_OPAMP_INPUT_INVERT_CONNECT_NO
<> 144:ef7eb2e8f9f7 202 );
<> 144:ef7eb2e8f9f7 203 }
<> 144:ef7eb2e8f9f7 204
<> 144:ef7eb2e8f9f7 205 return SUCCESS;
<> 144:ef7eb2e8f9f7 206 }
<> 144:ef7eb2e8f9f7 207
<> 144:ef7eb2e8f9f7 208 /**
<> 144:ef7eb2e8f9f7 209 * @brief Set each @ref LL_OPAMP_InitTypeDef field to default value.
<> 144:ef7eb2e8f9f7 210 * @param OPAMP_InitStruct pointer to a @ref LL_OPAMP_InitTypeDef structure
<> 144:ef7eb2e8f9f7 211 * whose fields will be set to default values.
<> 144:ef7eb2e8f9f7 212 * @retval None
<> 144:ef7eb2e8f9f7 213 */
<> 144:ef7eb2e8f9f7 214 void LL_OPAMP_StructInit(LL_OPAMP_InitTypeDef *OPAMP_InitStruct)
<> 144:ef7eb2e8f9f7 215 {
<> 144:ef7eb2e8f9f7 216 /* Set OPAMP_InitStruct fields to default values */
<> 144:ef7eb2e8f9f7 217 OPAMP_InitStruct->PowerMode = LL_OPAMP_POWERMODE_NORMAL;
<> 144:ef7eb2e8f9f7 218 OPAMP_InitStruct->FunctionalMode = LL_OPAMP_MODE_FOLLOWER;
<> 144:ef7eb2e8f9f7 219 OPAMP_InitStruct->InputNonInverting = LL_OPAMP_INPUT_NONINVERT_IO0;
<> 144:ef7eb2e8f9f7 220 /* Note: Parameter discarded if OPAMP in functional mode follower, */
<> 144:ef7eb2e8f9f7 221 /* set anyway to its default value. */
<> 144:ef7eb2e8f9f7 222 OPAMP_InitStruct->InputInverting = LL_OPAMP_INPUT_INVERT_CONNECT_NO;
<> 144:ef7eb2e8f9f7 223 }
<> 144:ef7eb2e8f9f7 224
<> 144:ef7eb2e8f9f7 225 /**
<> 144:ef7eb2e8f9f7 226 * @}
<> 144:ef7eb2e8f9f7 227 */
<> 144:ef7eb2e8f9f7 228
<> 144:ef7eb2e8f9f7 229 /**
<> 144:ef7eb2e8f9f7 230 * @}
<> 144:ef7eb2e8f9f7 231 */
<> 144:ef7eb2e8f9f7 232
<> 144:ef7eb2e8f9f7 233 /**
<> 144:ef7eb2e8f9f7 234 * @}
<> 144:ef7eb2e8f9f7 235 */
<> 144:ef7eb2e8f9f7 236
<> 144:ef7eb2e8f9f7 237 #endif /* OPAMP1 || OPAMP2 */
<> 144:ef7eb2e8f9f7 238
<> 144:ef7eb2e8f9f7 239 /**
<> 144:ef7eb2e8f9f7 240 * @}
<> 144:ef7eb2e8f9f7 241 */
<> 144:ef7eb2e8f9f7 242
<> 144:ef7eb2e8f9f7 243 #endif /* USE_FULL_LL_DRIVER */
<> 144:ef7eb2e8f9f7 244
<> 144:ef7eb2e8f9f7 245 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/