/**
******************************************************************************
* @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 */