| /** |
| ****************************************************************************** |
| * @file stm32l1xx_ll_comp.c |
| * @author MCD Application Team |
| * @brief COMP LL module driver |
| ****************************************************************************** |
| * @attention |
| * |
| * Copyright (c) 2017 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 "stm32l1xx_ll_comp.h" |
| |
| #ifdef USE_FULL_ASSERT |
| #include "stm32_assert.h" |
| #else |
| #define assert_param(expr) ((void)0U) |
| #endif |
| |
| /** @addtogroup STM32L1xx_LL_Driver |
| * @{ |
| */ |
| |
| #if defined (COMP1) || defined (COMP2) |
| |
| /** @addtogroup COMP_LL COMP |
| * @{ |
| */ |
| |
| /* Private types -------------------------------------------------------------*/ |
| /* Private variables ---------------------------------------------------------*/ |
| /* Private constants ---------------------------------------------------------*/ |
| /* Private macros ------------------------------------------------------------*/ |
| |
| /** @addtogroup COMP_LL_Private_Macros |
| * @{ |
| */ |
| |
| /* Check of parameters for configuration of COMP hierarchical scope: */ |
| /* COMP instance. */ |
| |
| #define IS_LL_COMP_POWER_MODE(__POWER_MODE__) \ |
| ( ((__POWER_MODE__) == LL_COMP_POWERMODE_MEDIUMSPEED) \ |
| || ((__POWER_MODE__) == LL_COMP_POWERMODE_ULTRALOWPOWER) \ |
| ) |
| |
| /* Note: On this STM32 series, comparator input plus parameters are */ |
| /* the different depending on COMP instances. */ |
| #if defined(RI_ASCR1_CH_31) |
| #define IS_LL_COMP_INPUT_PLUS(__COMP_INSTANCE__, __INPUT_PLUS__) \ |
| (((__COMP_INSTANCE__) == COMP1) \ |
| ? ( \ |
| ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO5) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO6) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO7) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO8) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO9) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO10) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO11) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO12) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO13) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO14) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO15) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO16) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO17) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO18) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO19) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO20) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO21) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO22) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO23) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO24) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO25) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO26) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO27) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO28) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO29) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO30) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO31) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO32) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO33) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_NONE) \ |
| ) \ |
| : \ |
| ( \ |
| ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO1) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO2) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO3) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO4) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_NONE) \ |
| ) \ |
| ) |
| #else |
| #define IS_LL_COMP_INPUT_PLUS(__COMP_INSTANCE__, __INPUT_PLUS__) \ |
| (((__COMP_INSTANCE__) == COMP1) \ |
| ? ( \ |
| ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO5) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO6) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO7) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO8) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO9) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO10) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO11) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO12) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO13) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO14) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO15) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO16) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO17) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO18) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO19) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO20) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO21) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO22) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO23) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO24) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO25) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO26) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO27) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO28) \ |
| ) \ |
| : \ |
| ( \ |
| ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO1) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO2) \ |
| ) \ |
| ) |
| #endif |
| |
| /* Note: On this STM32 series, comparator input minus parameters are */ |
| /* the different depending on COMP instances. */ |
| #define IS_LL_COMP_INPUT_MINUS(__COMP_INSTANCE__, __INPUT_MINUS__) \ |
| (((__COMP_INSTANCE__) == COMP1) \ |
| ? ( \ |
| ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_VREFINT) \ |
| ) \ |
| : \ |
| ( \ |
| ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_1_4VREFINT) \ |
| || ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_1_2VREFINT) \ |
| || ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_3_4VREFINT) \ |
| || ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_VREFINT) \ |
| || ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC1_CH1) \ |
| || ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC1_CH2) \ |
| || ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_IO1) \ |
| ) \ |
| ) |
| |
| #define IS_LL_COMP_OUTPUT_SELECTION(__OUTPUT_SELECTION__) \ |
| ( ((__OUTPUT_SELECTION__) == LL_COMP_OUTPUT_NONE) \ |
| || ((__OUTPUT_SELECTION__) == LL_COMP_OUTPUT_TIM2_IC4) \ |
| || ((__OUTPUT_SELECTION__) == LL_COMP_OUTPUT_TIM2_OCREFCLR) \ |
| || ((__OUTPUT_SELECTION__) == LL_COMP_OUTPUT_TIM3_IC4) \ |
| || ((__OUTPUT_SELECTION__) == LL_COMP_OUTPUT_TIM3_OCREFCLR) \ |
| || ((__OUTPUT_SELECTION__) == LL_COMP_OUTPUT_TIM4_IC4) \ |
| || ((__OUTPUT_SELECTION__) == LL_COMP_OUTPUT_TIM4_OCREFCLR) \ |
| || ((__OUTPUT_SELECTION__) == LL_COMP_OUTPUT_TIM10_IC1) \ |
| ) |
| |
| /** |
| * @} |
| */ |
| |
| |
| /* Private function prototypes -----------------------------------------------*/ |
| |
| /* Exported functions --------------------------------------------------------*/ |
| /** @addtogroup COMP_LL_Exported_Functions |
| * @{ |
| */ |
| |
| /** @addtogroup COMP_LL_EF_Init |
| * @{ |
| */ |
| |
| /** |
| * @brief De-initialize registers of the selected COMP instance |
| * to their default reset values. |
| * @note If comparator is locked, de-initialization by software is |
| * not possible. |
| * The only way to unlock the comparator is a device hardware reset. |
| * @param COMPx COMP instance |
| * @retval An ErrorStatus enumeration value: |
| * - SUCCESS: COMP registers are de-initialized |
| * - ERROR: COMP registers are not de-initialized |
| */ |
| ErrorStatus LL_COMP_DeInit(COMP_TypeDef *COMPx) |
| { |
| ErrorStatus status = SUCCESS; |
| |
| /* Check the parameters */ |
| assert_param(IS_COMP_ALL_INSTANCE(COMPx)); |
| |
| /* Note: On this STM32 series, only COMP instance COMP2 has */ |
| /* features settables: power mode, input minus selection */ |
| /* and output selection. */ |
| /* Note: On this STM32 series, setting COMP instance COMP2 input minus */ |
| /* is enabling the comparator. */ |
| /* Reset COMP2 input minus also disable the comparator. */ |
| /* Note: In case of de-initialization of COMP instance COMP1: */ |
| /* Switch COMP_CSR_SW1 is not modified because can be used */ |
| /* to connect OPAMP3 to ADC. */ |
| /* Switches RI_ASCR1_VCOMP, RI_ASCR1_SCM are reset: let routing */ |
| /* interface under control of ADC. */ |
| if(COMPx == COMP1) |
| { |
| CLEAR_BIT(COMP->CSR, |
| ( COMP_CSR_CMP1EN |
| | COMP_CSR_10KPU |
| | COMP_CSR_400KPU |
| | COMP_CSR_10KPD |
| | COMP_CSR_400KPD |
| ) |
| ); |
| } |
| else |
| { |
| CLEAR_BIT(COMP->CSR, |
| ( COMP_CSR_SPEED |
| | COMP_CSR_INSEL |
| | COMP_CSR_OUTSEL |
| ) |
| ); |
| } |
| |
| /* Set comparator input plus */ |
| LL_COMP_SetInputPlus(COMPx, LL_COMP_INPUT_PLUS_NONE); |
| |
| return status; |
| } |
| |
| /** |
| * @brief Initialize some features of COMP instance. |
| * @note This function configures features of the selected COMP instance. |
| * Some features are also available at scope COMP common instance |
| * (common to several COMP instances). |
| * Refer to functions having argument "COMPxy_COMMON" as parameter. |
| * @param COMPx COMP instance |
| * @param COMP_InitStruct Pointer to a @ref LL_COMP_InitTypeDef structure |
| * @retval An ErrorStatus enumeration value: |
| * - SUCCESS: COMP registers are initialized |
| * - ERROR: COMP registers are not initialized |
| */ |
| ErrorStatus LL_COMP_Init(COMP_TypeDef *COMPx, LL_COMP_InitTypeDef *COMP_InitStruct) |
| { |
| ErrorStatus status = SUCCESS; |
| |
| /* Check the parameters */ |
| assert_param(IS_COMP_ALL_INSTANCE(COMPx)); |
| if(COMPx == COMP2) |
| { |
| assert_param(IS_LL_COMP_POWER_MODE(COMP_InitStruct->PowerMode)); |
| assert_param(IS_LL_COMP_INPUT_MINUS(COMPx, COMP_InitStruct->InputMinus)); |
| assert_param(IS_LL_COMP_OUTPUT_SELECTION(COMP_InitStruct->OutputSelection)); |
| } |
| assert_param(IS_LL_COMP_INPUT_PLUS(COMPx, COMP_InitStruct->InputPlus)); |
| |
| /* Configuration of comparator instance : */ |
| /* - PowerMode */ |
| /* - InputPlus */ |
| /* - InputMinus */ |
| /* - OutputSelection */ |
| /* Note: On this STM32 series, only COMP instance COMP2 has */ |
| /* features settables: power mode, input minus selection */ |
| /* and output selection. */ |
| /* Note: On this STM32 series, setting COMP instance COMP2 input minus */ |
| /* is enabling the comparator. */ |
| if(COMPx == COMP2) |
| { |
| MODIFY_REG(COMP->CSR, |
| COMP_CSR_SPEED |
| | COMP_CSR_INSEL |
| | COMP_CSR_OUTSEL |
| , |
| COMP_InitStruct->PowerMode |
| | COMP_InitStruct->InputMinus |
| | COMP_InitStruct->OutputSelection |
| ); |
| |
| /* Set comparator input plus */ |
| LL_COMP_SetInputPlus(COMPx, COMP_InitStruct->InputPlus); |
| } |
| else /* COMPx == COMP1 */ |
| { |
| /* If window mode is enabled, COMP1 input plus is not used and therefore |
| not modified */ |
| if(READ_BIT(COMP12_COMMON->CSR, COMP_CSR_WNDWE) == COMP_CSR_WNDWE) |
| { |
| /* Set comparator input plus */ |
| LL_COMP_SetInputPlus(COMPx, COMP_InitStruct->InputPlus); |
| } |
| } |
| |
| return status; |
| } |
| |
| /** |
| * @brief Set each @ref LL_COMP_InitTypeDef field to default value. |
| * @param COMP_InitStruct: pointer to a @ref LL_COMP_InitTypeDef structure |
| * whose fields will be set to default values. |
| * @retval None |
| */ |
| void LL_COMP_StructInit(LL_COMP_InitTypeDef *COMP_InitStruct) |
| { |
| /* Set COMP_InitStruct fields to default values */ |
| COMP_InitStruct->PowerMode = LL_COMP_POWERMODE_ULTRALOWPOWER; |
| COMP_InitStruct->InputPlus = LL_COMP_INPUT_PLUS_IO1; |
| COMP_InitStruct->InputMinus = LL_COMP_INPUT_MINUS_VREFINT; |
| COMP_InitStruct->OutputSelection = LL_COMP_OUTPUT_NONE; |
| } |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| #endif /* COMP1 || COMP2 */ |
| |
| /** |
| * @} |
| */ |
| |
| #endif /* USE_FULL_LL_DRIVER */ |
| |
