diff options
Diffstat (limited to 'Drivers/STM32U0xx_HAL_Driver/Src/stm32u0xx_ll_opamp.c')
| -rw-r--r-- | Drivers/STM32U0xx_HAL_Driver/Src/stm32u0xx_ll_opamp.c | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/Drivers/STM32U0xx_HAL_Driver/Src/stm32u0xx_ll_opamp.c b/Drivers/STM32U0xx_HAL_Driver/Src/stm32u0xx_ll_opamp.c new file mode 100644 index 0000000..f49365e --- /dev/null +++ b/Drivers/STM32U0xx_HAL_Driver/Src/stm32u0xx_ll_opamp.c @@ -0,0 +1,226 @@ +/** + ****************************************************************************** + * @file stm32u0xx_ll_opamp.c + * @author MCD Application Team + * @brief OPAMP LL module driver + ****************************************************************************** + * @attention + * + * Copyright (c) 2021 STMicroelectronics. + * All rights reserved. + * + * This software is licensed under terms that can be found in the LICENSE file + * in the root directory of this software component. + * If no LICENSE file comes with this software, it is provided AS-IS. + * + ****************************************************************************** + */ +#if defined(USE_FULL_LL_DRIVER) + +/* Includes ------------------------------------------------------------------*/ +#include "stm32u0xx_ll_opamp.h" + +#ifdef USE_FULL_ASSERT +#include "stm32_assert.h" +#else +#define assert_param(expr) ((void)0U) +#endif /* USE_FULL_ASSERT */ + +/** @addtogroup STM32U0xx_LL_Driver + * @{ + */ + +#if defined (OPAMP1) + +/** @addtogroup OPAMP_LL OPAMP + * @{ + */ + +/* Private types -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private constants ---------------------------------------------------------*/ +/* Private macros ------------------------------------------------------------*/ + +/** @addtogroup OPAMP_LL_Private_Macros + * @{ + */ + +/* Check of parameters for configuration of OPAMP hierarchical scope: */ +/* OPAMP instance. */ + +#define IS_LL_OPAMP_POWER_MODE(__POWER_MODE__) (((__POWER_MODE__) == LL_OPAMP_POWERMODE_NORMALPOWER_NORMALSPEED) ||\ + ((__POWER_MODE__) == LL_OPAMP_POWERMODE_LOWPOWER_NORMALSPEED)) + + +#define IS_LL_OPAMP_FUNCTIONAL_MODE(__FUNCTIONAL_MODE__) (((__FUNCTIONAL_MODE__) == LL_OPAMP_MODE_STANDALONE) ||\ + ((__FUNCTIONAL_MODE__) == LL_OPAMP_MODE_FOLLOWER) ||\ + ((__FUNCTIONAL_MODE__) == LL_OPAMP_MODE_PGA)) + +/* Note: Comparator non-inverting inputs parameters are the same on all */ +/* OPAMP instances. */ +/* However, comparator instance kept as macro parameter for */ +/* compatibility with other STM32 families. */ +#define IS_LL_OPAMP_INPUT_NONINVERTING(__OPAMPX__, __INPUT_NONINVERTING__) \ + ( ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINVERT_IO0) \ + || ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINV_DAC1_CH1) \ + ) + +/* Note: Comparator non-inverting inputs parameters are the same on all */ +/* OPAMP instances. */ +/* However, comparator instance kept as macro parameter for */ +/* compatibility with other STM32 families. */ +#define IS_LL_OPAMP_INPUT_INVERTING(__OPAMPX__, __INPUT_INVERTING__) \ + ( ((__INPUT_INVERTING__) == LL_OPAMP_INPUT_INVERT_IO0) \ + || ((__INPUT_INVERTING__) == LL_OPAMP_INPUT_INVERT_CONNECT_NO) \ + ) + +/** + * @} + */ + + +/* Private function prototypes -----------------------------------------------*/ + +/* Exported functions --------------------------------------------------------*/ +/** @addtogroup OPAMP_LL_Exported_Functions + * @{ + */ + +/** @addtogroup OPAMP_LL_EF_Init + * @{ + */ + +/** + * @brief De-initialize registers of the selected OPAMP instance + * to their default reset values. + * @param OPAMPx OPAMP instance + * @retval An ErrorStatus enumeration value: + * - SUCCESS: OPAMP registers are de-initialized + * - ERROR: OPAMP registers are not de-initialized + */ +ErrorStatus LL_OPAMP_DeInit(OPAMP_TypeDef *OPAMPx) +{ + ErrorStatus status = SUCCESS; + + /* Check the parameters */ + assert_param(IS_OPAMP_ALL_INSTANCE(OPAMPx)); + + LL_OPAMP_WriteReg(OPAMPx, CSR, 0x00000000U); + + return status; +} + +/** + * @brief Initialize some features of OPAMP instance. + * @note This function reset bit of calibration mode to ensure + * to be in functional mode, in order to have OPAMP parameters + * (inputs selection, ...) set with the corresponding OPAMP mode + * to be effective. + * @note This function configures features of the selected OPAMP instance. + * Some features are also available at scope OPAMP common instance + * (common to several OPAMP instances). + * @param OPAMPx OPAMP instance + * @param OPAMP_InitStruct Pointer to a @ref LL_OPAMP_InitTypeDef structure + * @retval An ErrorStatus enumeration value: + * - SUCCESS: OPAMP registers are initialized + * - ERROR: OPAMP registers are not initialized + */ +ErrorStatus LL_OPAMP_Init(OPAMP_TypeDef *OPAMPx, const LL_OPAMP_InitTypeDef *OPAMP_InitStruct) +{ + /* Check the parameters */ + assert_param(IS_OPAMP_ALL_INSTANCE(OPAMPx)); + assert_param(IS_LL_OPAMP_POWER_MODE(OPAMP_InitStruct->PowerMode)); + assert_param(IS_LL_OPAMP_FUNCTIONAL_MODE(OPAMP_InitStruct->FunctionalMode)); + assert_param(IS_LL_OPAMP_INPUT_NONINVERTING(OPAMPx, OPAMP_InitStruct->InputNonInverting)); + + /* Note: OPAMP inverting input can be used with OPAMP in mode standalone */ + /* or PGA with external capacitors for filtering circuit. */ + /* Otherwise (OPAMP in mode follower), OPAMP inverting input is */ + /* not used (not connected to GPIO pin). */ + if (OPAMP_InitStruct->FunctionalMode != LL_OPAMP_MODE_FOLLOWER) + { + assert_param(IS_LL_OPAMP_INPUT_INVERTING(OPAMPx, OPAMP_InitStruct->InputInverting)); + } + + /* Configuration of OPAMP instance : */ + /* - PowerMode */ + /* - Functional mode */ + /* - Input non-inverting */ + /* - Input inverting */ + /* Note: Bit OPAMP_CSR_CALON reset to ensure to be in functional mode. */ + if (OPAMP_InitStruct->FunctionalMode != LL_OPAMP_MODE_FOLLOWER) + { + MODIFY_REG(OPAMPx->CSR, + OPAMP_CSR_OPALPM + | OPAMP_CSR_OPAMODE + | OPAMP_CSR_CALON + | OPAMP_CSR_VM_SEL + | OPAMP_CSR_VP_SEL + , + OPAMP_InitStruct->PowerMode + | OPAMP_InitStruct->FunctionalMode + | OPAMP_InitStruct->InputNonInverting + | OPAMP_InitStruct->InputInverting + ); + } + else + { + MODIFY_REG(OPAMPx->CSR, + OPAMP_CSR_OPALPM + | OPAMP_CSR_OPAMODE + | OPAMP_CSR_CALON + | OPAMP_CSR_VM_SEL + | OPAMP_CSR_VP_SEL + , + OPAMP_InitStruct->PowerMode + | LL_OPAMP_MODE_FOLLOWER + | OPAMP_InitStruct->InputNonInverting + | LL_OPAMP_INPUT_INVERT_CONNECT_NO + ); + } + + /* Set the power supply range to high for performance purpose */ + /* The OPAMP_CSR_OPARANGE is common configuration for all OPAMPs */ + /* bit OPAMP_CSR_OPARANGE applies for both OPAMPs */ + MODIFY_REG(OPAMP1->CSR, OPAMP_CSR_OPARANGE, OPAMP_CSR_OPARANGE); + + return SUCCESS; +} + +/** + * @brief Set each @ref LL_OPAMP_InitTypeDef field to default value. + * @param OPAMP_InitStruct pointer to a @ref LL_OPAMP_InitTypeDef structure + * whose fields will be set to default values. + * @retval None + */ +void LL_OPAMP_StructInit(LL_OPAMP_InitTypeDef *OPAMP_InitStruct) +{ + /* Set OPAMP_InitStruct fields to default values */ + OPAMP_InitStruct->PowerMode = LL_OPAMP_POWERMODE_NORMALPOWER_NORMALSPEED; + OPAMP_InitStruct->FunctionalMode = LL_OPAMP_MODE_FOLLOWER; + OPAMP_InitStruct->InputNonInverting = LL_OPAMP_INPUT_NONINVERT_IO0; + /* Note: Parameter discarded if OPAMP in functional mode follower, */ + /* set anyway to its default value. */ + OPAMP_InitStruct->InputInverting = LL_OPAMP_INPUT_INVERT_CONNECT_NO; +} + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +#endif /* OPAMP1 */ + +/** + * @} + */ + +#endif /* USE_FULL_LL_DRIVER */ + |