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HAL_L476/stm32l4xx_hal_opamp_ex.c@1:d0dfbce63a89, 2017-02-24 (annotated)
- Committer:
- elmot
- Date:
- Fri Feb 24 21:13:56 2017 +0000
- Revision:
- 1:d0dfbce63a89
Ready-to-copy
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| elmot | 1:d0dfbce63a89 | 1 | /** |
| elmot | 1:d0dfbce63a89 | 2 | ****************************************************************************** |
| elmot | 1:d0dfbce63a89 | 3 | * @file stm32l4xx_hal_opamp_ex.c |
| elmot | 1:d0dfbce63a89 | 4 | * @author MCD Application Team |
| elmot | 1:d0dfbce63a89 | 5 | * @version V1.5.1 |
| elmot | 1:d0dfbce63a89 | 6 | * @date 31-May-2016 |
| elmot | 1:d0dfbce63a89 | 7 | * @brief Extended OPAMP HAL module driver. |
| elmot | 1:d0dfbce63a89 | 8 | * This file provides firmware functions to manage the following |
| elmot | 1:d0dfbce63a89 | 9 | * functionalities of the operational amplifier(s)(OPAMP1, OPAMP2 etc) |
| elmot | 1:d0dfbce63a89 | 10 | * peripheral: |
| elmot | 1:d0dfbce63a89 | 11 | * + Extended Initialization and de-initialization functions |
| elmot | 1:d0dfbce63a89 | 12 | * + Extended Peripheral Control functions |
| elmot | 1:d0dfbce63a89 | 13 | * |
| elmot | 1:d0dfbce63a89 | 14 | @verbatim |
| elmot | 1:d0dfbce63a89 | 15 | ****************************************************************************** |
| elmot | 1:d0dfbce63a89 | 16 | * @attention |
| elmot | 1:d0dfbce63a89 | 17 | * |
| elmot | 1:d0dfbce63a89 | 18 | * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2> |
| elmot | 1:d0dfbce63a89 | 19 | * |
| elmot | 1:d0dfbce63a89 | 20 | * Redistribution and use in source and binary forms, with or without modification, |
| elmot | 1:d0dfbce63a89 | 21 | * are permitted provided that the following conditions are met: |
| elmot | 1:d0dfbce63a89 | 22 | * 1. Redistributions of source code must retain the above copyright notice, |
| elmot | 1:d0dfbce63a89 | 23 | * this list of conditions and the following disclaimer. |
| elmot | 1:d0dfbce63a89 | 24 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| elmot | 1:d0dfbce63a89 | 25 | * this list of conditions and the following disclaimer in the documentation |
| elmot | 1:d0dfbce63a89 | 26 | * and/or other materials provided with the distribution. |
| elmot | 1:d0dfbce63a89 | 27 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
| elmot | 1:d0dfbce63a89 | 28 | * may be used to endorse or promote products derived from this software |
| elmot | 1:d0dfbce63a89 | 29 | * without specific prior written permission. |
| elmot | 1:d0dfbce63a89 | 30 | * |
| elmot | 1:d0dfbce63a89 | 31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| elmot | 1:d0dfbce63a89 | 32 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| elmot | 1:d0dfbce63a89 | 33 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| elmot | 1:d0dfbce63a89 | 34 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
| elmot | 1:d0dfbce63a89 | 35 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| elmot | 1:d0dfbce63a89 | 36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| elmot | 1:d0dfbce63a89 | 37 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| elmot | 1:d0dfbce63a89 | 38 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| elmot | 1:d0dfbce63a89 | 39 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| elmot | 1:d0dfbce63a89 | 40 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| elmot | 1:d0dfbce63a89 | 41 | * |
| elmot | 1:d0dfbce63a89 | 42 | ****************************************************************************** |
| elmot | 1:d0dfbce63a89 | 43 | */ |
| elmot | 1:d0dfbce63a89 | 44 | |
| elmot | 1:d0dfbce63a89 | 45 | /* Includes ------------------------------------------------------------------*/ |
| elmot | 1:d0dfbce63a89 | 46 | #include "stm32l4xx_hal.h" |
| elmot | 1:d0dfbce63a89 | 47 | |
| elmot | 1:d0dfbce63a89 | 48 | /** @addtogroup STM32L4xx_HAL_Driver |
| elmot | 1:d0dfbce63a89 | 49 | * @{ |
| elmot | 1:d0dfbce63a89 | 50 | */ |
| elmot | 1:d0dfbce63a89 | 51 | |
| elmot | 1:d0dfbce63a89 | 52 | /** @defgroup OPAMPEx OPAMPEx |
| elmot | 1:d0dfbce63a89 | 53 | * @brief OPAMP Extended HAL module driver |
| elmot | 1:d0dfbce63a89 | 54 | * @{ |
| elmot | 1:d0dfbce63a89 | 55 | */ |
| elmot | 1:d0dfbce63a89 | 56 | |
| elmot | 1:d0dfbce63a89 | 57 | #ifdef HAL_OPAMP_MODULE_ENABLED |
| elmot | 1:d0dfbce63a89 | 58 | |
| elmot | 1:d0dfbce63a89 | 59 | /* Private typedef -----------------------------------------------------------*/ |
| elmot | 1:d0dfbce63a89 | 60 | /* Private define ------------------------------------------------------------*/ |
| elmot | 1:d0dfbce63a89 | 61 | /* Private macro -------------------------------------------------------------*/ |
| elmot | 1:d0dfbce63a89 | 62 | /* Private variables ---------------------------------------------------------*/ |
| elmot | 1:d0dfbce63a89 | 63 | /* Private function prototypes -----------------------------------------------*/ |
| elmot | 1:d0dfbce63a89 | 64 | /* Exported functions --------------------------------------------------------*/ |
| elmot | 1:d0dfbce63a89 | 65 | |
| elmot | 1:d0dfbce63a89 | 66 | /** @defgroup OPAMP_Exported_Functions OPAMP Exported Functions |
| elmot | 1:d0dfbce63a89 | 67 | * @{ |
| elmot | 1:d0dfbce63a89 | 68 | */ |
| elmot | 1:d0dfbce63a89 | 69 | |
| elmot | 1:d0dfbce63a89 | 70 | #if defined (STM32L471xx) || defined (STM32L475xx) || defined (STM32L476xx) || defined (STM32L485xx) || defined (STM32L486xx) |
| elmot | 1:d0dfbce63a89 | 71 | |
| elmot | 1:d0dfbce63a89 | 72 | /** @addtogroup OPAMPEx_Exported_Functions_Group1 |
| elmot | 1:d0dfbce63a89 | 73 | * @brief Extended operation functions |
| elmot | 1:d0dfbce63a89 | 74 | * |
| elmot | 1:d0dfbce63a89 | 75 | @verbatim |
| elmot | 1:d0dfbce63a89 | 76 | =============================================================================== |
| elmot | 1:d0dfbce63a89 | 77 | ##### Extended IO operation functions ##### |
| elmot | 1:d0dfbce63a89 | 78 | =============================================================================== |
| elmot | 1:d0dfbce63a89 | 79 | [..] |
| elmot | 1:d0dfbce63a89 | 80 | (+) OPAMP Self calibration. |
| elmot | 1:d0dfbce63a89 | 81 | |
| elmot | 1:d0dfbce63a89 | 82 | @endverbatim |
| elmot | 1:d0dfbce63a89 | 83 | * @{ |
| elmot | 1:d0dfbce63a89 | 84 | */ |
| elmot | 1:d0dfbce63a89 | 85 | |
| elmot | 1:d0dfbce63a89 | 86 | /* 2 OPAMPS available */ |
| elmot | 1:d0dfbce63a89 | 87 | /* 2 OPAMPS can be calibrated in parallel */ |
| elmot | 1:d0dfbce63a89 | 88 | /* Not available on STM32L43x/STM32L44x where only one OPAMP available */ |
| elmot | 1:d0dfbce63a89 | 89 | |
| elmot | 1:d0dfbce63a89 | 90 | /** |
| elmot | 1:d0dfbce63a89 | 91 | * @brief Run the self calibration of the 2 OPAMPs in parallel. |
| elmot | 1:d0dfbce63a89 | 92 | * @note Trimming values (PMOS & NMOS) are updated and user trimming is |
| elmot | 1:d0dfbce63a89 | 93 | * enabled is calibration is successful. |
| elmot | 1:d0dfbce63a89 | 94 | * @note Calibration is performed in the mode specified in OPAMP init |
| elmot | 1:d0dfbce63a89 | 95 | * structure (mode normal or low-power). To perform calibration for |
| elmot | 1:d0dfbce63a89 | 96 | * both modes, repeat this function twice after OPAMP init structure |
| elmot | 1:d0dfbce63a89 | 97 | * accordingly updated. |
| elmot | 1:d0dfbce63a89 | 98 | * @note Calibration runs about 10 ms (5 dichotomy steps, repeated for P |
| elmot | 1:d0dfbce63a89 | 99 | * and N transistors: 10 steps with 1 ms for each step). |
| elmot | 1:d0dfbce63a89 | 100 | * @param hopamp1 handle |
| elmot | 1:d0dfbce63a89 | 101 | * @param hopamp2 handle |
| elmot | 1:d0dfbce63a89 | 102 | * @retval HAL status |
| elmot | 1:d0dfbce63a89 | 103 | */ |
| elmot | 1:d0dfbce63a89 | 104 | |
| elmot | 1:d0dfbce63a89 | 105 | HAL_StatusTypeDef HAL_OPAMPEx_SelfCalibrateAll(OPAMP_HandleTypeDef *hopamp1, OPAMP_HandleTypeDef *hopamp2) |
| elmot | 1:d0dfbce63a89 | 106 | { |
| elmot | 1:d0dfbce63a89 | 107 | HAL_StatusTypeDef status = HAL_OK; |
| elmot | 1:d0dfbce63a89 | 108 | |
| elmot | 1:d0dfbce63a89 | 109 | uint32_t trimmingvaluen1 = 0; |
| elmot | 1:d0dfbce63a89 | 110 | uint32_t trimmingvaluep1 = 0; |
| elmot | 1:d0dfbce63a89 | 111 | uint32_t trimmingvaluen2 = 0; |
| elmot | 1:d0dfbce63a89 | 112 | uint32_t trimmingvaluep2 = 0; |
| elmot | 1:d0dfbce63a89 | 113 | |
| elmot | 1:d0dfbce63a89 | 114 | /* Selection of register of trimming depending on power mode: OTR or LPOTR */ |
| elmot | 1:d0dfbce63a89 | 115 | __IO uint32_t* tmp_opamp1_reg_trimming; |
| elmot | 1:d0dfbce63a89 | 116 | __IO uint32_t* tmp_opamp2_reg_trimming; |
| elmot | 1:d0dfbce63a89 | 117 | |
| elmot | 1:d0dfbce63a89 | 118 | uint32_t delta; |
| elmot | 1:d0dfbce63a89 | 119 | uint32_t opampmode1; |
| elmot | 1:d0dfbce63a89 | 120 | uint32_t opampmode2; |
| elmot | 1:d0dfbce63a89 | 121 | |
| elmot | 1:d0dfbce63a89 | 122 | if((hopamp1 == NULL) || (hopamp1->State == HAL_OPAMP_STATE_BUSYLOCKED) || \ |
| elmot | 1:d0dfbce63a89 | 123 | (hopamp2 == NULL) || (hopamp2->State == HAL_OPAMP_STATE_BUSYLOCKED)) |
| elmot | 1:d0dfbce63a89 | 124 | { |
| elmot | 1:d0dfbce63a89 | 125 | status = HAL_ERROR; |
| elmot | 1:d0dfbce63a89 | 126 | } |
| elmot | 1:d0dfbce63a89 | 127 | else |
| elmot | 1:d0dfbce63a89 | 128 | { |
| elmot | 1:d0dfbce63a89 | 129 | /* Check if OPAMP in calibration mode and calibration not yet enable */ |
| elmot | 1:d0dfbce63a89 | 130 | if((hopamp1->State == HAL_OPAMP_STATE_READY) && (hopamp2->State == HAL_OPAMP_STATE_READY)) |
| elmot | 1:d0dfbce63a89 | 131 | { |
| elmot | 1:d0dfbce63a89 | 132 | /* Check the parameter */ |
| elmot | 1:d0dfbce63a89 | 133 | assert_param(IS_OPAMP_ALL_INSTANCE(hopamp1->Instance)); |
| elmot | 1:d0dfbce63a89 | 134 | assert_param(IS_OPAMP_ALL_INSTANCE(hopamp2->Instance)); |
| elmot | 1:d0dfbce63a89 | 135 | |
| elmot | 1:d0dfbce63a89 | 136 | assert_param(IS_OPAMP_POWERMODE(hopamp1->Init.PowerMode)); |
| elmot | 1:d0dfbce63a89 | 137 | assert_param(IS_OPAMP_POWERMODE(hopamp2->Init.PowerMode)); |
| elmot | 1:d0dfbce63a89 | 138 | |
| elmot | 1:d0dfbce63a89 | 139 | /* Save OPAMP mode as in */ |
| elmot | 1:d0dfbce63a89 | 140 | /* STM32L471xx STM32L475xx STM32L476xx STM32L485xx STM32L486xx */ |
| elmot | 1:d0dfbce63a89 | 141 | /* the calibration is not working in PGA mode */ |
| elmot | 1:d0dfbce63a89 | 142 | opampmode1 = READ_BIT(hopamp1->Instance->CSR,OPAMP_CSR_OPAMODE); |
| elmot | 1:d0dfbce63a89 | 143 | opampmode2 = READ_BIT(hopamp2->Instance->CSR,OPAMP_CSR_OPAMODE); |
| elmot | 1:d0dfbce63a89 | 144 | |
| elmot | 1:d0dfbce63a89 | 145 | /* Use of standalone mode */ |
| elmot | 1:d0dfbce63a89 | 146 | MODIFY_REG(hopamp1->Instance->CSR, OPAMP_CSR_OPAMODE, OPAMP_STANDALONE_MODE); |
| elmot | 1:d0dfbce63a89 | 147 | MODIFY_REG(hopamp2->Instance->CSR, OPAMP_CSR_OPAMODE, OPAMP_STANDALONE_MODE); |
| elmot | 1:d0dfbce63a89 | 148 | |
| elmot | 1:d0dfbce63a89 | 149 | /* user trimming values are used for offset calibration */ |
| elmot | 1:d0dfbce63a89 | 150 | SET_BIT(hopamp1->Instance->CSR, OPAMP_CSR_USERTRIM); |
| elmot | 1:d0dfbce63a89 | 151 | SET_BIT(hopamp2->Instance->CSR, OPAMP_CSR_USERTRIM); |
| elmot | 1:d0dfbce63a89 | 152 | |
| elmot | 1:d0dfbce63a89 | 153 | /* Select trimming settings depending on power mode */ |
| elmot | 1:d0dfbce63a89 | 154 | if (hopamp1->Init.PowerMode == OPAMP_POWERMODE_NORMAL) |
| elmot | 1:d0dfbce63a89 | 155 | { |
| elmot | 1:d0dfbce63a89 | 156 | tmp_opamp1_reg_trimming = &OPAMP1->OTR; |
| elmot | 1:d0dfbce63a89 | 157 | } |
| elmot | 1:d0dfbce63a89 | 158 | else |
| elmot | 1:d0dfbce63a89 | 159 | { |
| elmot | 1:d0dfbce63a89 | 160 | tmp_opamp1_reg_trimming = &OPAMP1->LPOTR; |
| elmot | 1:d0dfbce63a89 | 161 | } |
| elmot | 1:d0dfbce63a89 | 162 | |
| elmot | 1:d0dfbce63a89 | 163 | if (hopamp2->Init.PowerMode == OPAMP_POWERMODE_NORMAL) |
| elmot | 1:d0dfbce63a89 | 164 | { |
| elmot | 1:d0dfbce63a89 | 165 | tmp_opamp2_reg_trimming = &OPAMP2->OTR; |
| elmot | 1:d0dfbce63a89 | 166 | } |
| elmot | 1:d0dfbce63a89 | 167 | else |
| elmot | 1:d0dfbce63a89 | 168 | { |
| elmot | 1:d0dfbce63a89 | 169 | tmp_opamp2_reg_trimming = &OPAMP2->LPOTR; |
| elmot | 1:d0dfbce63a89 | 170 | } |
| elmot | 1:d0dfbce63a89 | 171 | |
| elmot | 1:d0dfbce63a89 | 172 | /* Enable calibration */ |
| elmot | 1:d0dfbce63a89 | 173 | SET_BIT (hopamp1->Instance->CSR, OPAMP_CSR_CALON); |
| elmot | 1:d0dfbce63a89 | 174 | SET_BIT (hopamp2->Instance->CSR, OPAMP_CSR_CALON); |
| elmot | 1:d0dfbce63a89 | 175 | |
| elmot | 1:d0dfbce63a89 | 176 | /* 1st calibration - N */ |
| elmot | 1:d0dfbce63a89 | 177 | CLEAR_BIT (hopamp1->Instance->CSR, OPAMP_CSR_CALSEL); |
| elmot | 1:d0dfbce63a89 | 178 | CLEAR_BIT (hopamp2->Instance->CSR, OPAMP_CSR_CALSEL); |
| elmot | 1:d0dfbce63a89 | 179 | |
| elmot | 1:d0dfbce63a89 | 180 | /* Enable the selected opamp */ |
| elmot | 1:d0dfbce63a89 | 181 | SET_BIT (hopamp1->Instance->CSR, OPAMP_CSR_OPAMPxEN); |
| elmot | 1:d0dfbce63a89 | 182 | SET_BIT (hopamp2->Instance->CSR, OPAMP_CSR_OPAMPxEN); |
| elmot | 1:d0dfbce63a89 | 183 | |
| elmot | 1:d0dfbce63a89 | 184 | /* Init trimming counter */ |
| elmot | 1:d0dfbce63a89 | 185 | /* Medium value */ |
| elmot | 1:d0dfbce63a89 | 186 | trimmingvaluen1 = 16; |
| elmot | 1:d0dfbce63a89 | 187 | trimmingvaluen2 = 16; |
| elmot | 1:d0dfbce63a89 | 188 | delta = 8; |
| elmot | 1:d0dfbce63a89 | 189 | |
| elmot | 1:d0dfbce63a89 | 190 | while (delta != 0) |
| elmot | 1:d0dfbce63a89 | 191 | { |
| elmot | 1:d0dfbce63a89 | 192 | /* Set candidate trimming */ |
| elmot | 1:d0dfbce63a89 | 193 | /* OPAMP_POWERMODE_NORMAL */ |
| elmot | 1:d0dfbce63a89 | 194 | MODIFY_REG(*tmp_opamp1_reg_trimming, OPAMP_OTR_TRIMOFFSETN, trimmingvaluen1); |
| elmot | 1:d0dfbce63a89 | 195 | MODIFY_REG(*tmp_opamp2_reg_trimming, OPAMP_OTR_TRIMOFFSETN, trimmingvaluen2); |
| elmot | 1:d0dfbce63a89 | 196 | |
| elmot | 1:d0dfbce63a89 | 197 | /* OFFTRIMmax delay 1 ms as per datasheet (electrical characteristics */ |
| elmot | 1:d0dfbce63a89 | 198 | /* Offset trim time: during calibration, minimum time needed between */ |
| elmot | 1:d0dfbce63a89 | 199 | /* two steps to have 1 mV accuracy */ |
| elmot | 1:d0dfbce63a89 | 200 | HAL_Delay(OPAMP_TRIMMING_DELAY); |
| elmot | 1:d0dfbce63a89 | 201 | |
| elmot | 1:d0dfbce63a89 | 202 | if (READ_BIT(hopamp1->Instance->CSR, OPAMP_CSR_CALOUT) != RESET) |
| elmot | 1:d0dfbce63a89 | 203 | { |
| elmot | 1:d0dfbce63a89 | 204 | /* OPAMP_CSR_CALOUT is HIGH try lower trimming */ |
| elmot | 1:d0dfbce63a89 | 205 | trimmingvaluen1 -= delta; |
| elmot | 1:d0dfbce63a89 | 206 | } |
| elmot | 1:d0dfbce63a89 | 207 | else |
| elmot | 1:d0dfbce63a89 | 208 | { |
| elmot | 1:d0dfbce63a89 | 209 | /* OPAMP_CSR_CALOUT is LOW try higher trimming */ |
| elmot | 1:d0dfbce63a89 | 210 | trimmingvaluen1 += delta; |
| elmot | 1:d0dfbce63a89 | 211 | } |
| elmot | 1:d0dfbce63a89 | 212 | |
| elmot | 1:d0dfbce63a89 | 213 | if (READ_BIT(hopamp2->Instance->CSR, OPAMP_CSR_CALOUT) != RESET) |
| elmot | 1:d0dfbce63a89 | 214 | { |
| elmot | 1:d0dfbce63a89 | 215 | /* OPAMP_CSR_CALOUT is HIGH try lower trimming */ |
| elmot | 1:d0dfbce63a89 | 216 | trimmingvaluen2 -= delta; |
| elmot | 1:d0dfbce63a89 | 217 | } |
| elmot | 1:d0dfbce63a89 | 218 | else |
| elmot | 1:d0dfbce63a89 | 219 | { |
| elmot | 1:d0dfbce63a89 | 220 | /* OPAMP_CSR_CALOUT is LOW try higher trimming */ |
| elmot | 1:d0dfbce63a89 | 221 | trimmingvaluen2 += delta; |
| elmot | 1:d0dfbce63a89 | 222 | } |
| elmot | 1:d0dfbce63a89 | 223 | /* Divide range by 2 to continue dichotomy sweep */ |
| elmot | 1:d0dfbce63a89 | 224 | delta >>= 1; |
| elmot | 1:d0dfbce63a89 | 225 | } |
| elmot | 1:d0dfbce63a89 | 226 | |
| elmot | 1:d0dfbce63a89 | 227 | /* Still need to check if right calibration is current value or one step below */ |
| elmot | 1:d0dfbce63a89 | 228 | /* Indeed the first value that causes the OUTCAL bit to change from 0 to 1 */ |
| elmot | 1:d0dfbce63a89 | 229 | /* Set candidate trimming */ |
| elmot | 1:d0dfbce63a89 | 230 | MODIFY_REG(*tmp_opamp1_reg_trimming, OPAMP_OTR_TRIMOFFSETN, trimmingvaluen1); |
| elmot | 1:d0dfbce63a89 | 231 | MODIFY_REG(*tmp_opamp2_reg_trimming, OPAMP_OTR_TRIMOFFSETN, trimmingvaluen2); |
| elmot | 1:d0dfbce63a89 | 232 | |
| elmot | 1:d0dfbce63a89 | 233 | /* OFFTRIMmax delay 1 ms as per datasheet (electrical characteristics */ |
| elmot | 1:d0dfbce63a89 | 234 | /* Offset trim time: during calibration, minimum time needed between */ |
| elmot | 1:d0dfbce63a89 | 235 | /* two steps to have 1 mV accuracy */ |
| elmot | 1:d0dfbce63a89 | 236 | HAL_Delay(OPAMP_TRIMMING_DELAY); |
| elmot | 1:d0dfbce63a89 | 237 | |
| elmot | 1:d0dfbce63a89 | 238 | if ((READ_BIT(hopamp1->Instance->CSR, OPAMP_CSR_CALOUT)) == 0) |
| elmot | 1:d0dfbce63a89 | 239 | { |
| elmot | 1:d0dfbce63a89 | 240 | /* Trimming value is actually one value more */ |
| elmot | 1:d0dfbce63a89 | 241 | trimmingvaluen1++; |
| elmot | 1:d0dfbce63a89 | 242 | MODIFY_REG(*tmp_opamp1_reg_trimming, OPAMP_OTR_TRIMOFFSETN, trimmingvaluen1); |
| elmot | 1:d0dfbce63a89 | 243 | } |
| elmot | 1:d0dfbce63a89 | 244 | |
| elmot | 1:d0dfbce63a89 | 245 | if ((READ_BIT(hopamp2->Instance->CSR, OPAMP_CSR_CALOUT)) == 0) |
| elmot | 1:d0dfbce63a89 | 246 | { |
| elmot | 1:d0dfbce63a89 | 247 | /* Trimming value is actually one value more */ |
| elmot | 1:d0dfbce63a89 | 248 | trimmingvaluen2++; |
| elmot | 1:d0dfbce63a89 | 249 | MODIFY_REG(*tmp_opamp2_reg_trimming, OPAMP_OTR_TRIMOFFSETN, trimmingvaluen2); |
| elmot | 1:d0dfbce63a89 | 250 | } |
| elmot | 1:d0dfbce63a89 | 251 | |
| elmot | 1:d0dfbce63a89 | 252 | /* 2nd calibration - P */ |
| elmot | 1:d0dfbce63a89 | 253 | SET_BIT (hopamp1->Instance->CSR, OPAMP_CSR_CALSEL); |
| elmot | 1:d0dfbce63a89 | 254 | SET_BIT (hopamp2->Instance->CSR, OPAMP_CSR_CALSEL); |
| elmot | 1:d0dfbce63a89 | 255 | |
| elmot | 1:d0dfbce63a89 | 256 | /* Init trimming counter */ |
| elmot | 1:d0dfbce63a89 | 257 | /* Medium value */ |
| elmot | 1:d0dfbce63a89 | 258 | trimmingvaluep1 = 16; |
| elmot | 1:d0dfbce63a89 | 259 | trimmingvaluep2 = 16; |
| elmot | 1:d0dfbce63a89 | 260 | delta = 8; |
| elmot | 1:d0dfbce63a89 | 261 | |
| elmot | 1:d0dfbce63a89 | 262 | while (delta != 0) |
| elmot | 1:d0dfbce63a89 | 263 | { |
| elmot | 1:d0dfbce63a89 | 264 | /* Set candidate trimming */ |
| elmot | 1:d0dfbce63a89 | 265 | /* OPAMP_POWERMODE_NORMAL */ |
| elmot | 1:d0dfbce63a89 | 266 | MODIFY_REG(*tmp_opamp1_reg_trimming, OPAMP_OTR_TRIMOFFSETP, (trimmingvaluep1<<OPAMP_INPUT_NONINVERTING)); |
| elmot | 1:d0dfbce63a89 | 267 | MODIFY_REG(*tmp_opamp2_reg_trimming, OPAMP_OTR_TRIMOFFSETP, (trimmingvaluep2<<OPAMP_INPUT_NONINVERTING)); |
| elmot | 1:d0dfbce63a89 | 268 | |
| elmot | 1:d0dfbce63a89 | 269 | /* OFFTRIMmax delay 1 ms as per datasheet (electrical characteristics */ |
| elmot | 1:d0dfbce63a89 | 270 | /* Offset trim time: during calibration, minimum time needed between */ |
| elmot | 1:d0dfbce63a89 | 271 | /* two steps to have 1 mV accuracy */ |
| elmot | 1:d0dfbce63a89 | 272 | HAL_Delay(OPAMP_TRIMMING_DELAY); |
| elmot | 1:d0dfbce63a89 | 273 | |
| elmot | 1:d0dfbce63a89 | 274 | if (READ_BIT(hopamp1->Instance->CSR, OPAMP_CSR_CALOUT) != RESET) |
| elmot | 1:d0dfbce63a89 | 275 | { |
| elmot | 1:d0dfbce63a89 | 276 | /* OPAMP_CSR_CALOUT is HIGH try higher trimming */ |
| elmot | 1:d0dfbce63a89 | 277 | trimmingvaluep1 += delta; |
| elmot | 1:d0dfbce63a89 | 278 | } |
| elmot | 1:d0dfbce63a89 | 279 | else |
| elmot | 1:d0dfbce63a89 | 280 | { |
| elmot | 1:d0dfbce63a89 | 281 | /* OPAMP_CSR_CALOUT is HIGH try lower trimming */ |
| elmot | 1:d0dfbce63a89 | 282 | trimmingvaluep1 -= delta; |
| elmot | 1:d0dfbce63a89 | 283 | } |
| elmot | 1:d0dfbce63a89 | 284 | |
| elmot | 1:d0dfbce63a89 | 285 | if (READ_BIT(hopamp2->Instance->CSR, OPAMP_CSR_CALOUT) != RESET) |
| elmot | 1:d0dfbce63a89 | 286 | { |
| elmot | 1:d0dfbce63a89 | 287 | /* OPAMP_CSR_CALOUT is HIGH try higher trimming */ |
| elmot | 1:d0dfbce63a89 | 288 | trimmingvaluep2 += delta; |
| elmot | 1:d0dfbce63a89 | 289 | } |
| elmot | 1:d0dfbce63a89 | 290 | else |
| elmot | 1:d0dfbce63a89 | 291 | { |
| elmot | 1:d0dfbce63a89 | 292 | /* OPAMP_CSR_CALOUT is LOW try lower trimming */ |
| elmot | 1:d0dfbce63a89 | 293 | trimmingvaluep2 -= delta; |
| elmot | 1:d0dfbce63a89 | 294 | } |
| elmot | 1:d0dfbce63a89 | 295 | /* Divide range by 2 to continue dichotomy sweep */ |
| elmot | 1:d0dfbce63a89 | 296 | delta >>= 1; |
| elmot | 1:d0dfbce63a89 | 297 | } |
| elmot | 1:d0dfbce63a89 | 298 | |
| elmot | 1:d0dfbce63a89 | 299 | /* Still need to check if right calibration is current value or one step below */ |
| elmot | 1:d0dfbce63a89 | 300 | /* Indeed the first value that causes the OUTCAL bit to change from 1 to 0 */ |
| elmot | 1:d0dfbce63a89 | 301 | /* Set candidate trimming */ |
| elmot | 1:d0dfbce63a89 | 302 | MODIFY_REG(*tmp_opamp1_reg_trimming, OPAMP_OTR_TRIMOFFSETP, (trimmingvaluep1<<OPAMP_INPUT_NONINVERTING)); |
| elmot | 1:d0dfbce63a89 | 303 | MODIFY_REG(*tmp_opamp2_reg_trimming, OPAMP_OTR_TRIMOFFSETP, (trimmingvaluep2<<OPAMP_INPUT_NONINVERTING)); |
| elmot | 1:d0dfbce63a89 | 304 | |
| elmot | 1:d0dfbce63a89 | 305 | /* OFFTRIMmax delay 1 ms as per datasheet (electrical characteristics */ |
| elmot | 1:d0dfbce63a89 | 306 | /* Offset trim time: during calibration, minimum time needed between */ |
| elmot | 1:d0dfbce63a89 | 307 | /* two steps to have 1 mV accuracy */ |
| elmot | 1:d0dfbce63a89 | 308 | HAL_Delay(OPAMP_TRIMMING_DELAY); |
| elmot | 1:d0dfbce63a89 | 309 | |
| elmot | 1:d0dfbce63a89 | 310 | if (READ_BIT(hopamp1->Instance->CSR, OPAMP_CSR_CALOUT) != RESET) |
| elmot | 1:d0dfbce63a89 | 311 | { |
| elmot | 1:d0dfbce63a89 | 312 | /* Trimming value is actually one value more */ |
| elmot | 1:d0dfbce63a89 | 313 | trimmingvaluep1++; |
| elmot | 1:d0dfbce63a89 | 314 | MODIFY_REG(*tmp_opamp1_reg_trimming, OPAMP_OTR_TRIMOFFSETP, (trimmingvaluep1<<OPAMP_INPUT_NONINVERTING)); |
| elmot | 1:d0dfbce63a89 | 315 | } |
| elmot | 1:d0dfbce63a89 | 316 | |
| elmot | 1:d0dfbce63a89 | 317 | if (READ_BIT(hopamp2->Instance->CSR, OPAMP_CSR_CALOUT) != RESET) |
| elmot | 1:d0dfbce63a89 | 318 | { |
| elmot | 1:d0dfbce63a89 | 319 | /* Trimming value is actually one value more */ |
| elmot | 1:d0dfbce63a89 | 320 | trimmingvaluep2++; |
| elmot | 1:d0dfbce63a89 | 321 | MODIFY_REG(*tmp_opamp2_reg_trimming, OPAMP_OTR_TRIMOFFSETP, (trimmingvaluep2<<OPAMP_INPUT_NONINVERTING)); |
| elmot | 1:d0dfbce63a89 | 322 | } |
| elmot | 1:d0dfbce63a89 | 323 | |
| elmot | 1:d0dfbce63a89 | 324 | /* Disable the OPAMPs */ |
| elmot | 1:d0dfbce63a89 | 325 | CLEAR_BIT (hopamp1->Instance->CSR, OPAMP_CSR_OPAMPxEN); |
| elmot | 1:d0dfbce63a89 | 326 | CLEAR_BIT (hopamp2->Instance->CSR, OPAMP_CSR_OPAMPxEN); |
| elmot | 1:d0dfbce63a89 | 327 | |
| elmot | 1:d0dfbce63a89 | 328 | /* Disable calibration & set normal mode (operating mode) */ |
| elmot | 1:d0dfbce63a89 | 329 | CLEAR_BIT (hopamp1->Instance->CSR, OPAMP_CSR_CALON); |
| elmot | 1:d0dfbce63a89 | 330 | CLEAR_BIT (hopamp2->Instance->CSR, OPAMP_CSR_CALON); |
| elmot | 1:d0dfbce63a89 | 331 | |
| elmot | 1:d0dfbce63a89 | 332 | /* Self calibration is successful */ |
| elmot | 1:d0dfbce63a89 | 333 | /* Store calibration (user trimming) results in init structure. */ |
| elmot | 1:d0dfbce63a89 | 334 | |
| elmot | 1:d0dfbce63a89 | 335 | /* Set user trimming mode */ |
| elmot | 1:d0dfbce63a89 | 336 | hopamp1->Init.UserTrimming = OPAMP_TRIMMING_USER; |
| elmot | 1:d0dfbce63a89 | 337 | hopamp2->Init.UserTrimming = OPAMP_TRIMMING_USER; |
| elmot | 1:d0dfbce63a89 | 338 | |
| elmot | 1:d0dfbce63a89 | 339 | /* Affect calibration parameters depending on mode normal/low power */ |
| elmot | 1:d0dfbce63a89 | 340 | if (hopamp1->Init.PowerMode != OPAMP_POWERMODE_LOWPOWER) |
| elmot | 1:d0dfbce63a89 | 341 | { |
| elmot | 1:d0dfbce63a89 | 342 | /* Write calibration result N */ |
| elmot | 1:d0dfbce63a89 | 343 | hopamp1->Init.TrimmingValueN = trimmingvaluen1; |
| elmot | 1:d0dfbce63a89 | 344 | /* Write calibration result P */ |
| elmot | 1:d0dfbce63a89 | 345 | hopamp1->Init.TrimmingValueP = trimmingvaluep1; |
| elmot | 1:d0dfbce63a89 | 346 | } |
| elmot | 1:d0dfbce63a89 | 347 | else |
| elmot | 1:d0dfbce63a89 | 348 | { |
| elmot | 1:d0dfbce63a89 | 349 | /* Write calibration result N */ |
| elmot | 1:d0dfbce63a89 | 350 | hopamp1->Init.TrimmingValueNLowPower = trimmingvaluen1; |
| elmot | 1:d0dfbce63a89 | 351 | /* Write calibration result P */ |
| elmot | 1:d0dfbce63a89 | 352 | hopamp1->Init.TrimmingValuePLowPower = trimmingvaluep1; |
| elmot | 1:d0dfbce63a89 | 353 | } |
| elmot | 1:d0dfbce63a89 | 354 | |
| elmot | 1:d0dfbce63a89 | 355 | if (hopamp2->Init.PowerMode != OPAMP_POWERMODE_LOWPOWER) |
| elmot | 1:d0dfbce63a89 | 356 | { |
| elmot | 1:d0dfbce63a89 | 357 | /* Write calibration result N */ |
| elmot | 1:d0dfbce63a89 | 358 | hopamp2->Init.TrimmingValueN = trimmingvaluen2; |
| elmot | 1:d0dfbce63a89 | 359 | /* Write calibration result P */ |
| elmot | 1:d0dfbce63a89 | 360 | hopamp2->Init.TrimmingValueP = trimmingvaluep2; |
| elmot | 1:d0dfbce63a89 | 361 | } |
| elmot | 1:d0dfbce63a89 | 362 | else |
| elmot | 1:d0dfbce63a89 | 363 | { |
| elmot | 1:d0dfbce63a89 | 364 | /* Write calibration result N */ |
| elmot | 1:d0dfbce63a89 | 365 | hopamp2->Init.TrimmingValueNLowPower = trimmingvaluen2; |
| elmot | 1:d0dfbce63a89 | 366 | /* Write calibration result P */ |
| elmot | 1:d0dfbce63a89 | 367 | hopamp2->Init.TrimmingValuePLowPower = trimmingvaluep2; |
| elmot | 1:d0dfbce63a89 | 368 | } |
| elmot | 1:d0dfbce63a89 | 369 | |
| elmot | 1:d0dfbce63a89 | 370 | /* Update OPAMP state */ |
| elmot | 1:d0dfbce63a89 | 371 | hopamp1->State = HAL_OPAMP_STATE_READY; |
| elmot | 1:d0dfbce63a89 | 372 | hopamp2->State = HAL_OPAMP_STATE_READY; |
| elmot | 1:d0dfbce63a89 | 373 | |
| elmot | 1:d0dfbce63a89 | 374 | /* Restore OPAMP mode after calibration */ |
| elmot | 1:d0dfbce63a89 | 375 | MODIFY_REG(hopamp1->Instance->CSR, OPAMP_CSR_OPAMODE, opampmode1); |
| elmot | 1:d0dfbce63a89 | 376 | MODIFY_REG(hopamp2->Instance->CSR, OPAMP_CSR_OPAMODE, opampmode2); |
| elmot | 1:d0dfbce63a89 | 377 | } |
| elmot | 1:d0dfbce63a89 | 378 | else |
| elmot | 1:d0dfbce63a89 | 379 | { |
| elmot | 1:d0dfbce63a89 | 380 | /* At least one OPAMP can not be calibrated */ |
| elmot | 1:d0dfbce63a89 | 381 | status = HAL_ERROR; |
| elmot | 1:d0dfbce63a89 | 382 | } |
| elmot | 1:d0dfbce63a89 | 383 | } |
| elmot | 1:d0dfbce63a89 | 384 | return status; |
| elmot | 1:d0dfbce63a89 | 385 | } |
| elmot | 1:d0dfbce63a89 | 386 | |
| elmot | 1:d0dfbce63a89 | 387 | /** |
| elmot | 1:d0dfbce63a89 | 388 | * @} |
| elmot | 1:d0dfbce63a89 | 389 | */ |
| elmot | 1:d0dfbce63a89 | 390 | |
| elmot | 1:d0dfbce63a89 | 391 | #endif |
| elmot | 1:d0dfbce63a89 | 392 | |
| elmot | 1:d0dfbce63a89 | 393 | /** @defgroup OPAMPEx_Exported_Functions_Group2 Peripheral Control functions |
| elmot | 1:d0dfbce63a89 | 394 | * @brief Peripheral Control functions |
| elmot | 1:d0dfbce63a89 | 395 | * |
| elmot | 1:d0dfbce63a89 | 396 | @verbatim |
| elmot | 1:d0dfbce63a89 | 397 | =============================================================================== |
| elmot | 1:d0dfbce63a89 | 398 | ##### Peripheral Control functions ##### |
| elmot | 1:d0dfbce63a89 | 399 | =============================================================================== |
| elmot | 1:d0dfbce63a89 | 400 | [..] |
| elmot | 1:d0dfbce63a89 | 401 | (+) OPAMP unlock. |
| elmot | 1:d0dfbce63a89 | 402 | |
| elmot | 1:d0dfbce63a89 | 403 | @endverbatim |
| elmot | 1:d0dfbce63a89 | 404 | * @{ |
| elmot | 1:d0dfbce63a89 | 405 | */ |
| elmot | 1:d0dfbce63a89 | 406 | |
| elmot | 1:d0dfbce63a89 | 407 | /** |
| elmot | 1:d0dfbce63a89 | 408 | * @brief Unlock the selected OPAMP configuration. |
| elmot | 1:d0dfbce63a89 | 409 | * @note This function must be called only when OPAMP is in state "locked". |
| elmot | 1:d0dfbce63a89 | 410 | * @param hopamp: OPAMP handle |
| elmot | 1:d0dfbce63a89 | 411 | * @retval HAL status |
| elmot | 1:d0dfbce63a89 | 412 | */ |
| elmot | 1:d0dfbce63a89 | 413 | HAL_StatusTypeDef HAL_OPAMPEx_Unlock(OPAMP_HandleTypeDef* hopamp) |
| elmot | 1:d0dfbce63a89 | 414 | { |
| elmot | 1:d0dfbce63a89 | 415 | HAL_StatusTypeDef status = HAL_OK; |
| elmot | 1:d0dfbce63a89 | 416 | |
| elmot | 1:d0dfbce63a89 | 417 | /* Check the OPAMP handle allocation */ |
| elmot | 1:d0dfbce63a89 | 418 | /* Check if OPAMP locked */ |
| elmot | 1:d0dfbce63a89 | 419 | if((hopamp == NULL) || (hopamp->State == HAL_OPAMP_STATE_RESET) |
| elmot | 1:d0dfbce63a89 | 420 | || (hopamp->State == HAL_OPAMP_STATE_READY) |
| elmot | 1:d0dfbce63a89 | 421 | || (hopamp->State == HAL_OPAMP_STATE_CALIBBUSY) |
| elmot | 1:d0dfbce63a89 | 422 | || (hopamp->State == HAL_OPAMP_STATE_BUSY)) |
| elmot | 1:d0dfbce63a89 | 423 | |
| elmot | 1:d0dfbce63a89 | 424 | { |
| elmot | 1:d0dfbce63a89 | 425 | status = HAL_ERROR; |
| elmot | 1:d0dfbce63a89 | 426 | } |
| elmot | 1:d0dfbce63a89 | 427 | else |
| elmot | 1:d0dfbce63a89 | 428 | { |
| elmot | 1:d0dfbce63a89 | 429 | /* Check the parameter */ |
| elmot | 1:d0dfbce63a89 | 430 | assert_param(IS_OPAMP_ALL_INSTANCE(hopamp->Instance)); |
| elmot | 1:d0dfbce63a89 | 431 | |
| elmot | 1:d0dfbce63a89 | 432 | /* OPAMP state changed to locked */ |
| elmot | 1:d0dfbce63a89 | 433 | hopamp->State = HAL_OPAMP_STATE_BUSY; |
| elmot | 1:d0dfbce63a89 | 434 | } |
| elmot | 1:d0dfbce63a89 | 435 | return status; |
| elmot | 1:d0dfbce63a89 | 436 | } |
| elmot | 1:d0dfbce63a89 | 437 | |
| elmot | 1:d0dfbce63a89 | 438 | /** |
| elmot | 1:d0dfbce63a89 | 439 | * @} |
| elmot | 1:d0dfbce63a89 | 440 | */ |
| elmot | 1:d0dfbce63a89 | 441 | |
| elmot | 1:d0dfbce63a89 | 442 | /** |
| elmot | 1:d0dfbce63a89 | 443 | * @} |
| elmot | 1:d0dfbce63a89 | 444 | */ |
| elmot | 1:d0dfbce63a89 | 445 | |
| elmot | 1:d0dfbce63a89 | 446 | #endif /* HAL_OPAMP_MODULE_ENABLED */ |
| elmot | 1:d0dfbce63a89 | 447 | /** |
| elmot | 1:d0dfbce63a89 | 448 | * @} |
| elmot | 1:d0dfbce63a89 | 449 | */ |
| elmot | 1:d0dfbce63a89 | 450 | |
| elmot | 1:d0dfbce63a89 | 451 | /** |
| elmot | 1:d0dfbce63a89 | 452 | * @} |
| elmot | 1:d0dfbce63a89 | 453 | */ |
| elmot | 1:d0dfbce63a89 | 454 | |
| elmot | 1:d0dfbce63a89 | 455 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |