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targets/cmsis/TARGET_STM/TARGET_STM32F3XX/stm32f30x_opamp.c@637:ed69428d4850, 2015-12-22 (annotated)

Committer:
jaerts
Date:
Tue Dec 22 13:22:16 2015 +0000
Revision:
637:ed69428d4850
Parent:
155:8435094ec241 
Add very shady LPC1768 CAN Filter implementation

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UserRevisionLine numberNew contents of line
mbed_official 155:8435094ec241 1 /**
mbed_official 155:8435094ec241 2 ******************************************************************************
mbed_official 155:8435094ec241 3 * @file stm32f30x_opamp.c
mbed_official 155:8435094ec241 4 * @author MCD Application Team
mbed_official 155:8435094ec241 5 * @version V1.1.0
mbed_official 155:8435094ec241 6 * @date 27-February-2014
mbed_official 155:8435094ec241 7 * @brief This file provides firmware functions to manage the following
mbed_official 155:8435094ec241 8 * functionalities of the operational amplifiers (OPAMP1,...OPAMP4) peripheral:
mbed_official 155:8435094ec241 9 * + OPAMP Configuration
mbed_official 155:8435094ec241 10 * + OPAMP calibration
mbed_official 155:8435094ec241 11 *
mbed_official 155:8435094ec241 12 @verbatim
mbed_official 155:8435094ec241 13
mbed_official 155:8435094ec241 14 ==============================================================================
mbed_official 155:8435094ec241 15 ##### OPAMP Peripheral Features #####
mbed_official 155:8435094ec241 16 ==============================================================================
mbed_official 155:8435094ec241 17
mbed_official 155:8435094ec241 18 [..]
mbed_official 155:8435094ec241 19 The device integrates 4 operational amplifiers OPAMP1, OPAMP2, OPAMP3 and OPAMP4:
mbed_official 155:8435094ec241 20
mbed_official 155:8435094ec241 21 (+) The OPAMPs non inverting input can be selected among the list shown by
mbed_official 155:8435094ec241 22 table below.
mbed_official 155:8435094ec241 23
mbed_official 155:8435094ec241 24 (+) The OPAMPs inverting input can be selected among the list shown by
mbed_official 155:8435094ec241 25 table below.
mbed_official 155:8435094ec241 26
mbed_official 155:8435094ec241 27 (+) The OPAMPs outputs can be internally connected to the inverting input
mbed_official 155:8435094ec241 28 (follower mode)
mbed_official 155:8435094ec241 29 (+) The OPAMPs outputs can be internally connected to resistor feedback
mbed_official 155:8435094ec241 30 output (Programmable Gain Amplifier mode)
mbed_official 155:8435094ec241 31
mbed_official 155:8435094ec241 32 (+) The OPAMPs outputs can be internally connected to ADC
mbed_official 155:8435094ec241 33
mbed_official 155:8435094ec241 34 (+) The OPAMPs can be calibrated to compensate the offset compensation
mbed_official 155:8435094ec241 35
mbed_official 155:8435094ec241 36 (+) Timer-controlled Mux for automatic switch of inverting and
mbed_official 155:8435094ec241 37 non-inverting input
mbed_official 155:8435094ec241 38
mbed_official 155:8435094ec241 39 OPAMPs inverting/non-inverting inputs:
mbed_official 155:8435094ec241 40 +--------------------------------------------------------------+
mbed_official 155:8435094ec241 41 | | | OPAMP1 | OPAMP2 | OPAMP3 | OPAMP4 |
mbed_official 155:8435094ec241 42 |-----------------|--------|--------|--------|--------|--------|
mbed_official 155:8435094ec241 43 | | PGA | OK | OK | OK | OK |
mbed_official 155:8435094ec241 44 | Inverting Input | Vout | OK | OK | OK | OK |
mbed_official 155:8435094ec241 45 | | IO1 | PC5 | PC5 | PB10 | PB10 |
mbed_official 155:8435094ec241 46 | | IO2 | PA3 | PA5 | PB2 | PD8 |
mbed_official 155:8435094ec241 47 |-----------------|--------|--------|--------|--------|--------|
mbed_official 155:8435094ec241 48 | | IO1 | PA7 | PD14 | PB13 | PD11 |
mbed_official 155:8435094ec241 49 | Non Inverting | IO2 | PA5 | PB14 | PA5 | PB11 |
mbed_official 155:8435094ec241 50 | Input | IO3 | PA3 | PB0 | PA1 | PA4 |
mbed_official 155:8435094ec241 51 | | IO4 | PA1 | PA7 | PB0 | PB13 |
mbed_official 155:8435094ec241 52 +--------------------------------------------------------------+
mbed_official 155:8435094ec241 53
mbed_official 155:8435094ec241 54 ##### How to use this driver #####
mbed_official 155:8435094ec241 55 ==============================================================================
mbed_official 155:8435094ec241 56 [..]
mbed_official 155:8435094ec241 57 This driver provides functions to configure and program the OPAMP
mbed_official 155:8435094ec241 58 of all STM32F30x devices.
mbed_official 155:8435094ec241 59
mbed_official 155:8435094ec241 60 To use the OPAMP, perform the following steps:
mbed_official 155:8435094ec241 61
mbed_official 155:8435094ec241 62 (#) Enable the SYSCFG APB clock to get write access to OPAMP
mbed_official 155:8435094ec241 63 register using RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
mbed_official 155:8435094ec241 64
mbed_official 155:8435094ec241 65 (#) Configure the OPAMP input in analog mode using GPIO_Init()
mbed_official 155:8435094ec241 66
mbed_official 155:8435094ec241 67 (#) Configure the OPAMP using OPAMP_Init() function:
mbed_official 155:8435094ec241 68 (++) Select the inverting input
mbed_official 155:8435094ec241 69 (++) Select the non-inverting inverting input
mbed_official 155:8435094ec241 70
mbed_official 155:8435094ec241 71 (#) Enable the OPAMP using OPAMP_Cmd() function
mbed_official 155:8435094ec241 72
mbed_official 155:8435094ec241 73 @endverbatim
mbed_official 155:8435094ec241 74
mbed_official 155:8435094ec241 75 ******************************************************************************
mbed_official 155:8435094ec241 76 * @attention
mbed_official 155:8435094ec241 77 *
mbed_official 155:8435094ec241 78 * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
mbed_official 155:8435094ec241 79 *
mbed_official 155:8435094ec241 80 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 155:8435094ec241 81 * are permitted provided that the following conditions are met:
mbed_official 155:8435094ec241 82 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 155:8435094ec241 83 * this list of conditions and the following disclaimer.
mbed_official 155:8435094ec241 84 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 155:8435094ec241 85 * this list of conditions and the following disclaimer in the documentation
mbed_official 155:8435094ec241 86 * and/or other materials provided with the distribution.
mbed_official 155:8435094ec241 87 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 155:8435094ec241 88 * may be used to endorse or promote products derived from this software
mbed_official 155:8435094ec241 89 * without specific prior written permission.
mbed_official 155:8435094ec241 90 *
mbed_official 155:8435094ec241 91 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 155:8435094ec241 92 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 155:8435094ec241 93 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 155:8435094ec241 94 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 155:8435094ec241 95 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 155:8435094ec241 96 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 155:8435094ec241 97 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 155:8435094ec241 98 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 155:8435094ec241 99 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 155:8435094ec241 100 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 155:8435094ec241 101 *
mbed_official 155:8435094ec241 102 ******************************************************************************
mbed_official 155:8435094ec241 103 */
mbed_official 155:8435094ec241 104
mbed_official 155:8435094ec241 105 /* Includes ------------------------------------------------------------------*/
mbed_official 155:8435094ec241 106 #include "stm32f30x_opamp.h"
mbed_official 155:8435094ec241 107
mbed_official 155:8435094ec241 108 /** @addtogroup STM32F30x_StdPeriph_Driver
mbed_official 155:8435094ec241 109 * @{
mbed_official 155:8435094ec241 110 */
mbed_official 155:8435094ec241 111
mbed_official 155:8435094ec241 112 /** @defgroup OPAMP
mbed_official 155:8435094ec241 113 * @brief OPAMP driver modules
mbed_official 155:8435094ec241 114 * @{
mbed_official 155:8435094ec241 115 */
mbed_official 155:8435094ec241 116
mbed_official 155:8435094ec241 117 /* Private typedef -----------------------------------------------------------*/
mbed_official 155:8435094ec241 118 /* Private define ------------------------------------------------------------*/
mbed_official 155:8435094ec241 119 #define OPAMP_CSR_DEFAULT_MASK ((uint32_t)0xFFFFFF93)
mbed_official 155:8435094ec241 120 #define OPAMP_CSR_TIMERMUX_MASK ((uint32_t)0xFFFFF8FF)
mbed_official 155:8435094ec241 121 #define OPAMP_CSR_TRIMMING_MASK ((uint32_t)0x0000001F)
mbed_official 155:8435094ec241 122
mbed_official 155:8435094ec241 123 /* Private macro -------------------------------------------------------------*/
mbed_official 155:8435094ec241 124 /* Private variables ---------------------------------------------------------*/
mbed_official 155:8435094ec241 125 /* Private function prototypes -----------------------------------------------*/
mbed_official 155:8435094ec241 126 /* Private functions ---------------------------------------------------------*/
mbed_official 155:8435094ec241 127
mbed_official 155:8435094ec241 128 /** @defgroup OPAMP_Private_Functions
mbed_official 155:8435094ec241 129 * @{
mbed_official 155:8435094ec241 130 */
mbed_official 155:8435094ec241 131
mbed_official 155:8435094ec241 132 /** @defgroup OPAMP_Group1 Initialization and Configuration functions
mbed_official 155:8435094ec241 133 * @brief Initialization and Configuration functions
mbed_official 155:8435094ec241 134 *
mbed_official 155:8435094ec241 135 @verbatim
mbed_official 155:8435094ec241 136 ===============================================================================
mbed_official 155:8435094ec241 137 ##### Initialization and Configuration functions #####
mbed_official 155:8435094ec241 138 ===============================================================================
mbed_official 155:8435094ec241 139
mbed_official 155:8435094ec241 140 @endverbatim
mbed_official 155:8435094ec241 141 * @{
mbed_official 155:8435094ec241 142 */
mbed_official 155:8435094ec241 143
mbed_official 155:8435094ec241 144 /**
mbed_official 155:8435094ec241 145 * @brief Deinitializes OPAMP peripheral registers to their default reset values.
mbed_official 155:8435094ec241 146 * @note Deinitialization can't be performed if the OPAMP configuration is locked.
mbed_official 155:8435094ec241 147 * To unlock the configuration, perform a system reset.
mbed_official 155:8435094ec241 148 * @param OPAMP_Selection: the selected OPAMP.
mbed_official 155:8435094ec241 149 * This parameter can be OPAMP_Selection_OPAMPx where x can be 1 to 4
mbed_official 155:8435094ec241 150 * to select the OPAMP peripheral.
mbed_official 155:8435094ec241 151 * @param None
mbed_official 155:8435094ec241 152 * @retval None
mbed_official 155:8435094ec241 153 */
mbed_official 155:8435094ec241 154 void OPAMP_DeInit(uint32_t OPAMP_Selection)
mbed_official 155:8435094ec241 155 {
mbed_official 155:8435094ec241 156 /*!< Set OPAMP_CSR register to reset value */
mbed_official 155:8435094ec241 157 *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) = ((uint32_t)0x00000000);
mbed_official 155:8435094ec241 158 }
mbed_official 155:8435094ec241 159
mbed_official 155:8435094ec241 160 /**
mbed_official 155:8435094ec241 161 * @brief Initializes the OPAMP peripheral according to the specified parameters
mbed_official 155:8435094ec241 162 * in OPAMP_InitStruct
mbed_official 155:8435094ec241 163 * @note If the selected OPAMP is locked, initialization can't be performed.
mbed_official 155:8435094ec241 164 * To unlock the configuration, perform a system reset.
mbed_official 155:8435094ec241 165 * @param OPAMP_Selection: the selected OPAMP.
mbed_official 155:8435094ec241 166 * This parameter can be OPAMP_Selection_OPAMPx where x can be 1 to 4
mbed_official 155:8435094ec241 167 * to select the OPAMP peripheral.
mbed_official 155:8435094ec241 168 * @param OPAMP_InitStruct: pointer to an OPAMP_InitTypeDef structure that contains
mbed_official 155:8435094ec241 169 * the configuration information for the specified OPAMP peripheral.
mbed_official 155:8435094ec241 170 * - OPAMP_InvertingInput specifies the inverting input of OPAMP
mbed_official 155:8435094ec241 171 * - OPAMP_NonInvertingInput specifies the non inverting input of OPAMP
mbed_official 155:8435094ec241 172 * @retval None
mbed_official 155:8435094ec241 173 */
mbed_official 155:8435094ec241 174 void OPAMP_Init(uint32_t OPAMP_Selection, OPAMP_InitTypeDef* OPAMP_InitStruct)
mbed_official 155:8435094ec241 175 {
mbed_official 155:8435094ec241 176 uint32_t tmpreg = 0;
mbed_official 155:8435094ec241 177
mbed_official 155:8435094ec241 178 /* Check the parameters */
mbed_official 155:8435094ec241 179 assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
mbed_official 155:8435094ec241 180 assert_param(IS_OPAMP_INVERTING_INPUT(OPAMP_InitStruct->OPAMP_InvertingInput));
mbed_official 155:8435094ec241 181 assert_param(IS_OPAMP_NONINVERTING_INPUT(OPAMP_InitStruct->OPAMP_NonInvertingInput));
mbed_official 155:8435094ec241 182
mbed_official 155:8435094ec241 183 /*!< Get the OPAMPx_CSR register value */
mbed_official 155:8435094ec241 184 tmpreg = *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection);
mbed_official 155:8435094ec241 185
mbed_official 155:8435094ec241 186 /*!< Clear the inverting and non inverting bits selection bits */
mbed_official 155:8435094ec241 187 tmpreg &= (uint32_t) (OPAMP_CSR_DEFAULT_MASK);
mbed_official 155:8435094ec241 188
mbed_official 155:8435094ec241 189 /*!< Configure OPAMP: inverting and non inverting inputs */
mbed_official 155:8435094ec241 190 tmpreg |= (uint32_t)(OPAMP_InitStruct->OPAMP_InvertingInput | OPAMP_InitStruct->OPAMP_NonInvertingInput);
mbed_official 155:8435094ec241 191
mbed_official 155:8435094ec241 192 /*!< Write to OPAMPx_CSR register */
mbed_official 155:8435094ec241 193 *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) = tmpreg;
mbed_official 155:8435094ec241 194 }
mbed_official 155:8435094ec241 195
mbed_official 155:8435094ec241 196 /**
mbed_official 155:8435094ec241 197 * @brief Fills each OPAMP_InitStruct member with its default value.
mbed_official 155:8435094ec241 198 * @param OPAMP_InitStruct: pointer to an OPAMP_InitTypeDef structure which will
mbed_official 155:8435094ec241 199 * be initialized.
mbed_official 155:8435094ec241 200 * @retval None
mbed_official 155:8435094ec241 201 */
mbed_official 155:8435094ec241 202 void OPAMP_StructInit(OPAMP_InitTypeDef* OPAMP_InitStruct)
mbed_official 155:8435094ec241 203 {
mbed_official 155:8435094ec241 204 OPAMP_InitStruct->OPAMP_NonInvertingInput = OPAMP_NonInvertingInput_IO1;
mbed_official 155:8435094ec241 205 OPAMP_InitStruct->OPAMP_InvertingInput = OPAMP_InvertingInput_IO1;
mbed_official 155:8435094ec241 206 }
mbed_official 155:8435094ec241 207
mbed_official 155:8435094ec241 208 /**
mbed_official 155:8435094ec241 209 * @brief Configure the feedback resistor gain.
mbed_official 155:8435094ec241 210 * @note If the selected OPAMP is locked, gain configuration can't be performed.
mbed_official 155:8435094ec241 211 * To unlock the configuration, perform a system reset.
mbed_official 155:8435094ec241 212 * @param OPAMP_Selection: the selected OPAMP.
mbed_official 155:8435094ec241 213 * This parameter can be OPAMP_Selection_OPAMPx where x can be 1 to 4
mbed_official 155:8435094ec241 214 * to select the OPAMP peripheral.
mbed_official 155:8435094ec241 215 * @param NewState: new state of the OPAMP peripheral.
mbed_official 155:8435094ec241 216 * This parameter can be: ENABLE or DISABLE.
mbed_official 155:8435094ec241 217 * @retval None
mbed_official 155:8435094ec241 218 */
mbed_official 155:8435094ec241 219 void OPAMP_PGAConfig(uint32_t OPAMP_Selection, uint32_t OPAMP_PGAGain, uint32_t OPAMP_PGAConnect)
mbed_official 155:8435094ec241 220 {
mbed_official 155:8435094ec241 221 /* Check the parameters */
mbed_official 155:8435094ec241 222 assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
mbed_official 155:8435094ec241 223 assert_param(IS_OPAMP_PGAGAIN(OPAMP_PGAGain));
mbed_official 155:8435094ec241 224 assert_param(IS_OPAMP_PGACONNECT(OPAMP_PGAConnect));
mbed_official 155:8435094ec241 225
mbed_official 155:8435094ec241 226 /* Reset the configuration bits */
mbed_official 155:8435094ec241 227 *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) &= (uint32_t)(~OPAMP_CSR_PGGAIN);
mbed_official 155:8435094ec241 228
mbed_official 155:8435094ec241 229 /* Set the new configuration */
mbed_official 155:8435094ec241 230 *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) |= (uint32_t) (OPAMP_PGAGain | OPAMP_PGAConnect);
mbed_official 155:8435094ec241 231 }
mbed_official 155:8435094ec241 232
mbed_official 155:8435094ec241 233 /**
mbed_official 155:8435094ec241 234 * @brief Configure the OPAMP's internal reference.
mbed_official 155:8435094ec241 235 * @note This feature is used when calibration enabled or OPAMP's reference
mbed_official 155:8435094ec241 236 * connected to the non inverting input.
mbed_official 155:8435094ec241 237 * @note If the selected OPAMP is locked, Vref configuration can't be performed.
mbed_official 155:8435094ec241 238 * To unlock the configuration, perform a system reset.
mbed_official 155:8435094ec241 239 * @param OPAMP_Selection: the selected OPAMP.
mbed_official 155:8435094ec241 240 * This parameter can be OPAMP_Selection_OPAMPx where x can be 1 to 4
mbed_official 155:8435094ec241 241 * to select the OPAMP peripheral.
mbed_official 155:8435094ec241 242 * @param OPAMP_Vref: This parameter can be:
mbed_official 155:8435094ec241 243 * OPAMP_Vref_3VDDA: OPMAP Vref = 3.3% VDDA
mbed_official 155:8435094ec241 244 * OPAMP_Vref_10VDDA: OPMAP Vref = 10% VDDA
mbed_official 155:8435094ec241 245 * OPAMP_Vref_50VDDA: OPMAP Vref = 50% VDDA
mbed_official 155:8435094ec241 246 * OPAMP_Vref_90VDDA: OPMAP Vref = 90% VDDA
mbed_official 155:8435094ec241 247 * @retval None
mbed_official 155:8435094ec241 248 */
mbed_official 155:8435094ec241 249 void OPAMP_VrefConfig(uint32_t OPAMP_Selection, uint32_t OPAMP_Vref)
mbed_official 155:8435094ec241 250 {
mbed_official 155:8435094ec241 251 uint32_t tmpreg = 0;
mbed_official 155:8435094ec241 252
mbed_official 155:8435094ec241 253 /* Check the parameters */
mbed_official 155:8435094ec241 254 assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
mbed_official 155:8435094ec241 255 assert_param(IS_OPAMP_VREF(OPAMP_Vref));
mbed_official 155:8435094ec241 256
mbed_official 155:8435094ec241 257 /*!< Get the OPAMPx_CSR register value */
mbed_official 155:8435094ec241 258 tmpreg = *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection);
mbed_official 155:8435094ec241 259
mbed_official 155:8435094ec241 260 /*!< Clear the CALSEL bits */
mbed_official 155:8435094ec241 261 tmpreg &= (uint32_t) (~OPAMP_CSR_CALSEL);
mbed_official 155:8435094ec241 262
mbed_official 155:8435094ec241 263 /*!< Configure OPAMP reference */
mbed_official 155:8435094ec241 264 tmpreg |= (uint32_t)(OPAMP_Vref);
mbed_official 155:8435094ec241 265
mbed_official 155:8435094ec241 266 /*!< Write to OPAMPx_CSR register */
mbed_official 155:8435094ec241 267 *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) = tmpreg;
mbed_official 155:8435094ec241 268 }
mbed_official 155:8435094ec241 269
mbed_official 155:8435094ec241 270 /**
mbed_official 155:8435094ec241 271 * @brief Connnect the internal reference to the OPAMP's non inverting input.
mbed_official 155:8435094ec241 272 * @note If the selected OPAMP is locked, Vref configuration can't be performed.
mbed_official 155:8435094ec241 273 * To unlock the configuration, perform a system reset.
mbed_official 155:8435094ec241 274 * @param OPAMP_Selection: the selected OPAMP.
mbed_official 155:8435094ec241 275 * This parameter can be OPAMP_Selection_OPAMPx where x can be 1 to 4
mbed_official 155:8435094ec241 276 * to select the OPAMP peripheral.
mbed_official 155:8435094ec241 277 * @param NewState: new state of the OPAMP peripheral.
mbed_official 155:8435094ec241 278 * This parameter can be: ENABLE or DISABLE.
mbed_official 155:8435094ec241 279 * @retval None
mbed_official 155:8435094ec241 280 */
mbed_official 155:8435094ec241 281 void OPAMP_VrefConnectNonInvertingInput(uint32_t OPAMP_Selection, FunctionalState NewState)
mbed_official 155:8435094ec241 282 {
mbed_official 155:8435094ec241 283 /* Check the parameters */
mbed_official 155:8435094ec241 284 assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
mbed_official 155:8435094ec241 285 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 155:8435094ec241 286
mbed_official 155:8435094ec241 287 if (NewState != DISABLE)
mbed_official 155:8435094ec241 288 {
mbed_official 155:8435094ec241 289 /* Connnect the internal reference to the OPAMP's non inverting input */
mbed_official 155:8435094ec241 290 *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) |= (uint32_t) (OPAMP_CSR_FORCEVP);
mbed_official 155:8435094ec241 291 }
mbed_official 155:8435094ec241 292 else
mbed_official 155:8435094ec241 293 {
mbed_official 155:8435094ec241 294 /* Disconnnect the internal reference to the OPAMP's non inverting input */
mbed_official 155:8435094ec241 295 *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) &= (uint32_t)(~OPAMP_CSR_FORCEVP);
mbed_official 155:8435094ec241 296 }
mbed_official 155:8435094ec241 297 }
mbed_official 155:8435094ec241 298
mbed_official 155:8435094ec241 299 /**
mbed_official 155:8435094ec241 300 * @brief Enables or disables connecting the OPAMP's internal reference to ADC.
mbed_official 155:8435094ec241 301 * @note If the selected OPAMP is locked, Vref connection can't be performed.
mbed_official 155:8435094ec241 302 * To unlock the configuration, perform a system reset.
mbed_official 155:8435094ec241 303 * @param NewState: new state of the Vrefint output.
mbed_official 155:8435094ec241 304 * This parameter can be: ENABLE or DISABLE.
mbed_official 155:8435094ec241 305 * @retval None
mbed_official 155:8435094ec241 306 */
mbed_official 155:8435094ec241 307 void OPAMP_VrefConnectADCCmd(uint32_t OPAMP_Selection, FunctionalState NewState)
mbed_official 155:8435094ec241 308 {
mbed_official 155:8435094ec241 309 /* Check the parameters */
mbed_official 155:8435094ec241 310 assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
mbed_official 155:8435094ec241 311 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 155:8435094ec241 312
mbed_official 155:8435094ec241 313 if (NewState != DISABLE)
mbed_official 155:8435094ec241 314 {
mbed_official 155:8435094ec241 315 /* Enable output internal reference */
mbed_official 155:8435094ec241 316 *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) |= (uint32_t) (OPAMP_CSR_TSTREF);
mbed_official 155:8435094ec241 317 }
mbed_official 155:8435094ec241 318 else
mbed_official 155:8435094ec241 319 {
mbed_official 155:8435094ec241 320 /* Disable output internal reference */
mbed_official 155:8435094ec241 321 *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) &= (uint32_t)(~OPAMP_CSR_TSTREF);
mbed_official 155:8435094ec241 322 }
mbed_official 155:8435094ec241 323 }
mbed_official 155:8435094ec241 324
mbed_official 155:8435094ec241 325 /**
mbed_official 155:8435094ec241 326 * @brief Configure the OPAMP peripheral (secondary inputs) for timer-controlled
mbed_official 155:8435094ec241 327 * mux mode according to the specified parameters in OPAMP_InitStruct.
mbed_official 155:8435094ec241 328 * @note If the selected OPAMP is locked, timer-controlled mux configuration
mbed_official 155:8435094ec241 329 * can't be performed.
mbed_official 155:8435094ec241 330 * To unlock the configuration, perform a system reset.
mbed_official 155:8435094ec241 331 * @param OPAMP_Selection: the selected OPAMP.
mbed_official 155:8435094ec241 332 * This parameter can be OPAMP_Selection_OPAMPx where x can be 1 to 4
mbed_official 155:8435094ec241 333 * to select the OPAMP peripheral.
mbed_official 155:8435094ec241 334 * @param OPAMP_InitStruct: pointer to an OPAMP_InitTypeDef structure that contains
mbed_official 155:8435094ec241 335 * the configuration information for the specified OPAMP peripheral.
mbed_official 155:8435094ec241 336 * - OPAMP_InvertingInput specifies the inverting input of OPAMP
mbed_official 155:8435094ec241 337 * - OPAMP_NonInvertingInput specifies the non inverting input of OPAMP
mbed_official 155:8435094ec241 338 * @note PGA and Vout can't be selected as seconadry inverting input.
mbed_official 155:8435094ec241 339 * @retval None
mbed_official 155:8435094ec241 340 */
mbed_official 155:8435094ec241 341 void OPAMP_TimerControlledMuxConfig(uint32_t OPAMP_Selection, OPAMP_InitTypeDef* OPAMP_InitStruct)
mbed_official 155:8435094ec241 342 {
mbed_official 155:8435094ec241 343 uint32_t tmpreg = 0;
mbed_official 155:8435094ec241 344
mbed_official 155:8435094ec241 345 /* Check the parameters */
mbed_official 155:8435094ec241 346 assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
mbed_official 155:8435094ec241 347 assert_param(IS_OPAMP_SECONDARY_INVINPUT(OPAMP_InitStruct->OPAMP_InvertingInput));
mbed_official 155:8435094ec241 348 assert_param(IS_OPAMP_NONINVERTING_INPUT(OPAMP_InitStruct->OPAMP_NonInvertingInput));
mbed_official 155:8435094ec241 349
mbed_official 155:8435094ec241 350 /*!< Get the OPAMPx_CSR register value */
mbed_official 155:8435094ec241 351 tmpreg = *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection);
mbed_official 155:8435094ec241 352
mbed_official 155:8435094ec241 353 /*!< Clear the secondary inverting bit, secondary non inverting bit and TCMEN bits */
mbed_official 155:8435094ec241 354 tmpreg &= (uint32_t) (OPAMP_CSR_TIMERMUX_MASK);
mbed_official 155:8435094ec241 355
mbed_official 155:8435094ec241 356 /*!< Configure OPAMP: secondary inverting and non inverting inputs */
mbed_official 155:8435094ec241 357 tmpreg |= (uint32_t)((uint32_t)(OPAMP_InitStruct->OPAMP_InvertingInput<<3) | (uint32_t)(OPAMP_InitStruct->OPAMP_NonInvertingInput<<7));
mbed_official 155:8435094ec241 358
mbed_official 155:8435094ec241 359 /*!< Write to OPAMPx_CSR register */
mbed_official 155:8435094ec241 360 *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) = tmpreg;
mbed_official 155:8435094ec241 361 }
mbed_official 155:8435094ec241 362
mbed_official 155:8435094ec241 363 /**
mbed_official 155:8435094ec241 364 * @brief Enable or disable the timer-controlled mux mode.
mbed_official 155:8435094ec241 365 * @note If the selected OPAMP is locked, enable/disable can't be performed.
mbed_official 155:8435094ec241 366 * To unlock the configuration, perform a system reset.
mbed_official 155:8435094ec241 367 * @param OPAMP_Selection: the selected OPAMP.
mbed_official 155:8435094ec241 368 * This parameter can be OPAMP_Selection_OPAMPx where x can be 1 to 4
mbed_official 155:8435094ec241 369 * to select the OPAMP peripheral.
mbed_official 155:8435094ec241 370 * @param NewState: new state of the OPAMP peripheral.
mbed_official 155:8435094ec241 371 * This parameter can be: ENABLE or DISABLE.
mbed_official 155:8435094ec241 372 * @retval None
mbed_official 155:8435094ec241 373 */
mbed_official 155:8435094ec241 374 void OPAMP_TimerControlledMuxCmd(uint32_t OPAMP_Selection, FunctionalState NewState)
mbed_official 155:8435094ec241 375 {
mbed_official 155:8435094ec241 376 /* Check the parameters */
mbed_official 155:8435094ec241 377 assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
mbed_official 155:8435094ec241 378 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 155:8435094ec241 379
mbed_official 155:8435094ec241 380 if (NewState != DISABLE)
mbed_official 155:8435094ec241 381 {
mbed_official 155:8435094ec241 382 /* Enable the timer-controlled Mux mode */
mbed_official 155:8435094ec241 383 *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) |= (uint32_t) (OPAMP_CSR_TCMEN);
mbed_official 155:8435094ec241 384 }
mbed_official 155:8435094ec241 385 else
mbed_official 155:8435094ec241 386 {
mbed_official 155:8435094ec241 387 /* Disable the timer-controlled Mux mode */
mbed_official 155:8435094ec241 388 *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) &= (uint32_t)(~OPAMP_CSR_TCMEN);
mbed_official 155:8435094ec241 389 }
mbed_official 155:8435094ec241 390 }
mbed_official 155:8435094ec241 391
mbed_official 155:8435094ec241 392 /**
mbed_official 155:8435094ec241 393 * @brief Enable or disable the OPAMP peripheral.
mbed_official 155:8435094ec241 394 * @note If the selected OPAMP is locked, enable/disable can't be performed.
mbed_official 155:8435094ec241 395 * To unlock the configuration, perform a system reset.
mbed_official 155:8435094ec241 396 * @param OPAMP_Selection: the selected OPAMP.
mbed_official 155:8435094ec241 397 * This parameter can be OPAMP_Selection_OPAMPx where x can be 1 to 4
mbed_official 155:8435094ec241 398 * to select the OPAMP peripheral.
mbed_official 155:8435094ec241 399 * @param NewState: new state of the OPAMP peripheral.
mbed_official 155:8435094ec241 400 * This parameter can be: ENABLE or DISABLE.
mbed_official 155:8435094ec241 401 * @retval None
mbed_official 155:8435094ec241 402 */
mbed_official 155:8435094ec241 403 void OPAMP_Cmd(uint32_t OPAMP_Selection, FunctionalState NewState)
mbed_official 155:8435094ec241 404 {
mbed_official 155:8435094ec241 405 /* Check the parameters */
mbed_official 155:8435094ec241 406 assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
mbed_official 155:8435094ec241 407 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 155:8435094ec241 408
mbed_official 155:8435094ec241 409 if (NewState != DISABLE)
mbed_official 155:8435094ec241 410 {
mbed_official 155:8435094ec241 411 /* Enable the selected OPAMPx peripheral */
mbed_official 155:8435094ec241 412 *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) |= (uint32_t) (OPAMP_CSR_OPAMPxEN);
mbed_official 155:8435094ec241 413 }
mbed_official 155:8435094ec241 414 else
mbed_official 155:8435094ec241 415 {
mbed_official 155:8435094ec241 416 /* Disable the selected OPAMPx peripheral */
mbed_official 155:8435094ec241 417 *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) &= (uint32_t)(~OPAMP_CSR_OPAMPxEN);
mbed_official 155:8435094ec241 418 }
mbed_official 155:8435094ec241 419 }
mbed_official 155:8435094ec241 420
mbed_official 155:8435094ec241 421 /**
mbed_official 155:8435094ec241 422 * @brief Return the output level (high or low) during calibration of the selected OPAMP.
mbed_official 155:8435094ec241 423 * @param OPAMP_Selection: the selected OPAMP.
mbed_official 155:8435094ec241 424 * This parameter can be OPAMP_Selection_OPAMPx where x can be 1 to 4
mbed_official 155:8435094ec241 425 * to select the OPAMP peripheral.
mbed_official 155:8435094ec241 426 * - OPAMP output is low when the non-inverting input is at a lower
mbed_official 155:8435094ec241 427 * voltage than the inverting input
mbed_official 155:8435094ec241 428 * - OPAMP output is high when the non-inverting input is at a higher
mbed_official 155:8435094ec241 429 * voltage than the inverting input
mbed_official 155:8435094ec241 430 * @note OPAMP ouput level is provided only during calibration phase.
mbed_official 155:8435094ec241 431 * @retval Returns the selected OPAMP output level: low or high.
mbed_official 155:8435094ec241 432 *
mbed_official 155:8435094ec241 433 */
mbed_official 155:8435094ec241 434 uint32_t OPAMP_GetOutputLevel(uint32_t OPAMP_Selection)
mbed_official 155:8435094ec241 435 {
mbed_official 155:8435094ec241 436 uint32_t opampout = 0x0;
mbed_official 155:8435094ec241 437
mbed_official 155:8435094ec241 438 /* Check the parameters */
mbed_official 155:8435094ec241 439 assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
mbed_official 155:8435094ec241 440
mbed_official 155:8435094ec241 441 /* Check if selected OPAMP output is high */
mbed_official 155:8435094ec241 442 if ((*(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) & (OPAMP_CSR_OUTCAL)) != 0)
mbed_official 155:8435094ec241 443 {
mbed_official 155:8435094ec241 444 opampout = OPAMP_OutputLevel_High;
mbed_official 155:8435094ec241 445 }
mbed_official 155:8435094ec241 446 else
mbed_official 155:8435094ec241 447 {
mbed_official 155:8435094ec241 448 opampout = OPAMP_OutputLevel_Low;
mbed_official 155:8435094ec241 449 }
mbed_official 155:8435094ec241 450
mbed_official 155:8435094ec241 451 /* Return the OPAMP output level */
mbed_official 155:8435094ec241 452 return (uint32_t)(opampout);
mbed_official 155:8435094ec241 453 }
mbed_official 155:8435094ec241 454
mbed_official 155:8435094ec241 455 /**
mbed_official 155:8435094ec241 456 * @brief Select the trimming mode.
mbed_official 155:8435094ec241 457 * @param OffsetTrimming: the selected offset trimming mode.
mbed_official 155:8435094ec241 458 * This parameter can be one of the following values:
mbed_official 155:8435094ec241 459 * @arg OPAMP_Trimming_Factory: factory trimming values are used for offset
mbed_official 155:8435094ec241 460 * calibration
mbed_official 155:8435094ec241 461 * @arg OPAMP_Trimming_User: user trimming values are used for offset
mbed_official 155:8435094ec241 462 * calibration
mbed_official 155:8435094ec241 463 * @note When OffsetTrimming_User is selected, use OPAMP_OffsetTrimConfig()
mbed_official 155:8435094ec241 464 * function or OPAMP_OffsetTrimLowPowerConfig() function to adjust
mbed_official 155:8435094ec241 465 * trimming value.
mbed_official 155:8435094ec241 466 * @retval None
mbed_official 155:8435094ec241 467 */
mbed_official 155:8435094ec241 468 void OPAMP_OffsetTrimModeSelect(uint32_t OPAMP_Selection, uint32_t OPAMP_Trimming)
mbed_official 155:8435094ec241 469 {
mbed_official 155:8435094ec241 470 /* Check the parameters */
mbed_official 155:8435094ec241 471 assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
mbed_official 155:8435094ec241 472 assert_param(IS_OPAMP_TRIMMING(OPAMP_Trimming));
mbed_official 155:8435094ec241 473
mbed_official 155:8435094ec241 474 /* Reset USERTRIM bit */
mbed_official 155:8435094ec241 475 *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) &= (~(uint32_t) (OPAMP_CSR_USERTRIM));
mbed_official 155:8435094ec241 476
mbed_official 155:8435094ec241 477 /* Select trimming mode */
mbed_official 155:8435094ec241 478 *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) |= OPAMP_Trimming;
mbed_official 155:8435094ec241 479 }
mbed_official 155:8435094ec241 480
mbed_official 155:8435094ec241 481 /**
mbed_official 155:8435094ec241 482 * @brief Configure the trimming value of the OPAMP.
mbed_official 155:8435094ec241 483 * @param OPAMP_Selection: the selected OPAMP.
mbed_official 155:8435094ec241 484 * This parameter can be OPAMP_Selection_OPAMPx where x can be 1 to 4
mbed_official 155:8435094ec241 485 * to select the OPAMP peripheral.
mbed_official 155:8435094ec241 486 * @param OPAMP_Input: the selected OPAMP input.
mbed_official 155:8435094ec241 487 * This parameter can be one of the following values:
mbed_official 155:8435094ec241 488 * @arg OPAMP_Input_Inverting: Inverting input is selected to configure the trimming value
mbed_official 155:8435094ec241 489 * @arg OPAMP_Input_NonInverting: Non inverting input is selected to configure the trimming value
mbed_official 155:8435094ec241 490 * @param OPAMP_TrimValue: the trimming value. This parameter can be any value lower
mbed_official 155:8435094ec241 491 * or equal to 0x0000001F.
mbed_official 155:8435094ec241 492 * @retval None
mbed_official 155:8435094ec241 493 */
mbed_official 155:8435094ec241 494 void OPAMP_OffsetTrimConfig(uint32_t OPAMP_Selection, uint32_t OPAMP_Input, uint32_t OPAMP_TrimValue)
mbed_official 155:8435094ec241 495 {
mbed_official 155:8435094ec241 496 uint32_t tmpreg = 0;
mbed_official 155:8435094ec241 497
mbed_official 155:8435094ec241 498 /* Check the parameters */
mbed_official 155:8435094ec241 499 assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
mbed_official 155:8435094ec241 500 assert_param(IS_OPAMP_INPUT(OPAMP_Input));
mbed_official 155:8435094ec241 501 assert_param(IS_OPAMP_TRIMMINGVALUE(OPAMP_TrimValue));
mbed_official 155:8435094ec241 502
mbed_official 155:8435094ec241 503 /*!< Get the OPAMPx_CSR register value */
mbed_official 155:8435094ec241 504 tmpreg = *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection);
mbed_official 155:8435094ec241 505
mbed_official 155:8435094ec241 506 /*!< Clear the trimming bits */
mbed_official 155:8435094ec241 507 tmpreg &= ((uint32_t)~(OPAMP_CSR_TRIMMING_MASK<<OPAMP_Input));
mbed_official 155:8435094ec241 508
mbed_official 155:8435094ec241 509 /*!< Configure the new trimming value */
mbed_official 155:8435094ec241 510 tmpreg |= (uint32_t)(OPAMP_TrimValue<<OPAMP_Input);
mbed_official 155:8435094ec241 511
mbed_official 155:8435094ec241 512 /*!< Write to OPAMPx_CSR register */
mbed_official 155:8435094ec241 513 *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) = tmpreg;
mbed_official 155:8435094ec241 514 }
mbed_official 155:8435094ec241 515
mbed_official 155:8435094ec241 516 /**
mbed_official 155:8435094ec241 517 * @brief Start or stop the calibration of selected OPAMP peripheral.
mbed_official 155:8435094ec241 518 * @note If the selected OPAMP is locked, start/stop can't be performed.
mbed_official 155:8435094ec241 519 * To unlock the configuration, perform a system reset.
mbed_official 155:8435094ec241 520 * @param OPAMP_Selection: the selected OPAMP.
mbed_official 155:8435094ec241 521 * This parameter can be OPAMP_Selection_OPAMPx where x can be 1 to 4
mbed_official 155:8435094ec241 522 * to select the OPAMP peripheral.
mbed_official 155:8435094ec241 523 * @param NewState: new state of the OPAMP peripheral.
mbed_official 155:8435094ec241 524 * This parameter can be: ENABLE or DISABLE.
mbed_official 155:8435094ec241 525 * @retval None
mbed_official 155:8435094ec241 526 */
mbed_official 155:8435094ec241 527 void OPAMP_StartCalibration(uint32_t OPAMP_Selection, FunctionalState NewState)
mbed_official 155:8435094ec241 528 {
mbed_official 155:8435094ec241 529 /* Check the parameters */
mbed_official 155:8435094ec241 530 assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
mbed_official 155:8435094ec241 531 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 155:8435094ec241 532
mbed_official 155:8435094ec241 533 if (NewState != DISABLE)
mbed_official 155:8435094ec241 534 {
mbed_official 155:8435094ec241 535 /* Start the OPAMPx calibration */
mbed_official 155:8435094ec241 536 *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) |= (uint32_t) (OPAMP_CSR_CALON);
mbed_official 155:8435094ec241 537 }
mbed_official 155:8435094ec241 538 else
mbed_official 155:8435094ec241 539 {
mbed_official 155:8435094ec241 540 /* Stop the OPAMPx calibration */
mbed_official 155:8435094ec241 541 *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) &= (uint32_t)(~OPAMP_CSR_CALON);
mbed_official 155:8435094ec241 542 }
mbed_official 155:8435094ec241 543 }
mbed_official 155:8435094ec241 544
mbed_official 155:8435094ec241 545 /**
mbed_official 155:8435094ec241 546 * @}
mbed_official 155:8435094ec241 547 */
mbed_official 155:8435094ec241 548
mbed_official 155:8435094ec241 549 /** @defgroup OPAMP_Group2 OPAMP configuration locking function
mbed_official 155:8435094ec241 550 * @brief OPAMP1,...OPAMP4 configuration locking function
mbed_official 155:8435094ec241 551 * OPAMP1,...OPAMP4 configuration can be locked each separately.
mbed_official 155:8435094ec241 552 * Unlocking is performed by system reset.
mbed_official 155:8435094ec241 553 *
mbed_official 155:8435094ec241 554 @verbatim
mbed_official 155:8435094ec241 555 ===============================================================================
mbed_official 155:8435094ec241 556 ##### Configuration Lock function #####
mbed_official 155:8435094ec241 557 ===============================================================================
mbed_official 155:8435094ec241 558
mbed_official 155:8435094ec241 559 @endverbatim
mbed_official 155:8435094ec241 560 * @{
mbed_official 155:8435094ec241 561 */
mbed_official 155:8435094ec241 562
mbed_official 155:8435094ec241 563 /**
mbed_official 155:8435094ec241 564 * @brief Lock the selected OPAMP configuration.
mbed_official 155:8435094ec241 565 * @note Locking the configuration means that all control bits are read-only.
mbed_official 155:8435094ec241 566 * To unlock the OPAMP configuration, perform a system reset.
mbed_official 155:8435094ec241 567 * @param OPAMP_Selection: the selected OPAMP.
mbed_official 155:8435094ec241 568 * This parameter can be OPAMP_Selection_OPAMPx where x can be 1 to 4
mbed_official 155:8435094ec241 569 * to select the OPAMP peripheral.
mbed_official 155:8435094ec241 570 * @retval None
mbed_official 155:8435094ec241 571 */
mbed_official 155:8435094ec241 572 void OPAMP_LockConfig(uint32_t OPAMP_Selection)
mbed_official 155:8435094ec241 573 {
mbed_official 155:8435094ec241 574 /* Check the parameter */
mbed_official 155:8435094ec241 575 assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
mbed_official 155:8435094ec241 576
mbed_official 155:8435094ec241 577 /* Set the lock bit corresponding to selected OPAMP */
mbed_official 155:8435094ec241 578 *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) |= (uint32_t) (OPAMP_CSR_LOCK);
mbed_official 155:8435094ec241 579 }
mbed_official 155:8435094ec241 580
mbed_official 155:8435094ec241 581 /**
mbed_official 155:8435094ec241 582 * @}
mbed_official 155:8435094ec241 583 */
mbed_official 155:8435094ec241 584
mbed_official 155:8435094ec241 585 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/