361 lines
9.8 KiB
C
361 lines
9.8 KiB
C
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/**
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******************************************************************************
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* @file ft32f0xx_opa.c
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* @author FMD AE
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* @brief This file provides firmware functions to manage the following
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* functionalities of the comparators (OPA1 and OPA2) peripheral
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* applicable only on FT32F030 devices:
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* + Comparators configuration
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* + Window mode control
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* @version V1.0.0
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* @data 2021-07-01
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "ft32f0xx_comp.h"
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#include "ft32f0xx_opa.h"
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/* CSR register Mask */
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#define OPA_CR_CLEAR_MASK ((uint32_t)0x0003FFC1)
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/* Clear PRMAP BIT*/
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#define OPA_OP2_CLEAR_PRMAP ((uint32_t)0x00020000)
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/**
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* @brief Deinitializes OPA peripheral registers to their default reset values.
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* @note Deinitialization can't be performed if the OPA configuration is locked.
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* To unlock the configuration, perform a system reset.
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* @param OPAx: the selected comparator.
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* This parameter can be one of the following values:
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* @arg OPA: OPA1 selected
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* @arg OPA2: OPA2 selected
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* @retval None
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*/
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void OPA_DeInit(OPA_TypeDef* OPAx)
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{
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/* Check the parameters */
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assert_param(IS_OPA_ALL_PERIPH(OPAx));
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OPAx->CR = ((uint32_t)0x00000000); /*!< Set OPA_CSR register to reset value */
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}
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/**
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* @brief Initializes the OPA peripheral according to the specified parameters
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* in OPA_InitStruct
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* @note If the selected comparator is locked, initialization can't be performed.
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* To unlock the configuration, perform a system reset.
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* @note To correctly run this function, the OPA_Cali() function must be called before.
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* @param OPAx: the selected comparator.
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* This parameter can be one of the following values:
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* @arg OPA: OPA1 selected
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* @arg OPA2: OPA2 selected
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* @param OPA_InitStruct: pointer to an OPA_InitTypeDef structure that contains
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* the configuration information for the specified OPA peripheral.
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* @retval None
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*/
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void OPA_Init(OPA_TypeDef* OPAx, OPA_InitTypeDef* OPA_InitStruct)
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{
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uint32_t tmpreg = 0;
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/* Check the parameters */
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assert_param(IS_OPA_VIP_SEL(OPA_InitStruct->OPA_OP0PSel));
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assert_param(IS_OPA_VIN_SEL(OPA_InitStruct->OPA_OP0NSel));
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assert_param(IS_OPA_FR_SEL(OPA_InitStruct->OPA_OP0FR));
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assert_param(IS_OPA_FCAP_SEL(OPA_InitStruct->OPA_OP0FCAPE));
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assert_param(IS_OPA_ODIG_SEL(OPA_InitStruct->OPA_OPTODIG));
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assert_param(IS_OPA_OIO_SEL(OPA_InitStruct->OPA_OPTOIO));
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/*!< Get the OPA_CR register value */
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tmpreg = OPAx->CR;
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/*!< Clear the bits */
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tmpreg &= (uint32_t) ~(OPA_CR_CLEAR_MASK);
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/*!< Configure OPA: OPA_VipSel, OPA_VinSel, OPA_OutputSel value and OPA_Pol */
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tmpreg |= (uint32_t)((OPA_InitStruct->OPA_OP0PSel | OPA_InitStruct->OPA_OP0NSel|
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OPA_InitStruct->OPA_OP0FR | OPA_InitStruct->OPA_OP0FCAPE | OPA_InitStruct->OPA_OPTODIG |OPA_InitStruct->OPA_OPTOIO));
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/*!< Write to OPA_CR register */
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OPAx->CR = tmpreg;
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}
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/**
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* @brief Fills each OPA_InitStruct member with its default value.
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* @param OPA_InitStruct: pointer to an OPA_InitTypeDef structure which will
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* be initialized.
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* @retval None
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*/
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void OPA_StructInit(OPA_InitTypeDef* OPA_InitStruct)
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{
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OPA_InitStruct->OPA_OP0PSel = 0x00000000;
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OPA_InitStruct->OPA_OP0NSel = 0x00002000;
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OPA_InitStruct->OPA_OP0FR = 0x00000000;
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OPA_InitStruct->OPA_OP0FCAPE = 0x00000000;
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OPA_InitStruct->OPA_OPTODIG = 0x00000080;
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OPA_InitStruct->OPA_OPTOIO = 0x00000040;
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}
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/**
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* @brief Enable or disable the OPA peripheral.
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* @note If the selected comparator is locked, enable/disable can't be performed.
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* To unlock the configuration, perform a system reset.
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* @param OPAx: the selected comparator.
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* This parameter can be one of the following values:
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* @arg OPA: OPA1 selected
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* @arg OPA2: OPA2 selected
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* @param NewState: new state of the OPA peripheral.
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* This parameter can be: ENABLE or DISABLE.
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* @note When enabled, the comparator compares the non inverting input with
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* the inverting input and the comparison result is available on comparator output.
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* @note When disabled, the comparator doesn't perform comparison and the
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* output level is low.
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* @retval None
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*/
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void OPA_Cmd(OPA_TypeDef* OPAx, FunctionalState NewState)
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{
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/* Check the parameters */
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assert_param(IS_OPA_ALL_PERIPH(OPAx));
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assert_param(IS_FUNCTIONAL_STATE(NewState));
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if (NewState != DISABLE)
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{
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/* Enable the selected OPA peripheral */
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OPAx->CR |= OPA_OP1_ON;
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}
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else
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{
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/* Disable the selected OPA peripheral */
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OPAx->CR &= ~OPA_OP1_ON;
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}
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}
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/**
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* @brief Return the output level (high or low) of the selected comparator.
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* @note The output level depends on the selected polarity.
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* @note If the polarity is not inverted:
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* - Comparator output is low when the non-inverting input is at a lower
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* voltage than the inverting input
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* - Comparator output is high when the non-inverting input is at a higher
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* voltage than the inverting input
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* @note If the polarity is inverted:
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* - Comparator output is high when the non-inverting input is at a lower
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* voltage than the inverting input
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* - Comparator output is low when the non-inverting input is at a higher
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* voltage than the inverting input
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* @param OPAx: the selected comparator.
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* This parameter can be one of the following values:
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* @arg OPA: OPA1 selected
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* @arg OPA2: OPA2 selected
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* @param OPA_OutLevel:
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* This parameter can be one of the following values:
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* @arg OPA_OutputLevel_High
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* @arg OPA_OutputLevel_Low
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* @retval Returns the selected comparator output level: low or high.
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*
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*/
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uint32_t OPA_GetOutputLevel(OPA_TypeDef* OPAx, uint32_t OPA_OutLevel)
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{
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uint32_t compout = 0x0;
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/* Check the parameters */
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assert_param(IS_OPA_ALL_PERIPH(OPAx));
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assert_param(IS_OPA_OUTPUT_LEVEL(OPA_OutLevel));
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/* Check if selected comparator output is high */
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if ((OPAx->CR & OPA_OutLevel) != 0)
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{
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compout = OPA_OutLevel;
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}
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else
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{
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compout = OPA_OutputLevel_Low;
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}
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/* Return the comparator output level */
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return (uint32_t)(compout);
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}
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/**
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* @brief Return the output level (high or low) of the selected comparator.
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* @note The output level depends on the selected polarity.
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* @param OPAx: the selected comparator.
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* This parameter can be one of the following values:
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* @arg OPA: OPA1 selected
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* @arg OPA2: OPA2 selected
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* @retval Returns: 0：fail others：The calibration value
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*
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*/
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uint8_t OPA_Cali(OPA_TypeDef* OPAx)
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{
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uint32_t opadelay;
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uint32_t outstate;
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uint8_t CalDA, CalDB;
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uint32_t opatmp32;
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uint32_t delay_time = 0x1fff;
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/* Check the parameters */
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assert_param(IS_OPA_ALL_PERIPH(OPAx));
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/* Enable the selected OPA peripheral */
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OPAx->CR |= OPA_OP1_ON;
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/* Enable OP0TM */
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OPAx->CR |= OPA_OP1_TM;
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/* OP0NSEL = 00 , SET TO GND */
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OPAx->CR &= ~OPA_OP1_NSEL;
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/* OP0PSEL = 1 , SET TO GND */
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OPAx->CR |= OPA_OP1_PSEL;
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/* OP0FCAPE = 0 */
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OPAx->CR &= ~OPA_OP1_FCAPE;
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/* OPTODIG = 1 */
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OPAx->CR |= OPA_OP1_TODIG;
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/* OP0FR = 000 */
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OPAx->CR &= ~OPA_OP1_FR;
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if (OPAx == OPA)
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{
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/* PA2 TO FLOAT */
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GPIOA ->PUPDR &= ~(GPIO_PUPDR_PUPDR0 << ((uint32_t)2 * 2));
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}
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else
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{
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/* Clear PRMAP */
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OPAx->CR &= (~OPA_OP2_CLEAR_PRMAP);
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/* PF4 TO FLOAT */
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GPIOF ->PUPDR &= ~(GPIO_PUPDR_PUPDR0 << ((uint32_t)4 * 2));
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}
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#if defined (FT32F072xB)
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/* OP0COF = 00000 */
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OPAx->CR &= ~OPA_OP1_COF;
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CalDA = 0;
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opadelay = delay_time;
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while(opadelay--);
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outstate = OPAx->CR; // save
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for(;;)
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{
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CalDA++;
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if(CalDA >= 0x1F)
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return 0; //fail
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opatmp32 = OPAx->CR & (~OPA_OP1_COF);
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OPAx->CR = opatmp32 | (CalDA << 1);
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opadelay = delay_time;
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while(opadelay--);
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if( (outstate ^ OPAx->CR) & OPA_OP1_OUT)
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break;
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}
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OPAx->CR |= OPA_OP1_COF; //0x1F
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CalDB = 0x1F;
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opadelay = delay_time;
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while(opadelay--);
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outstate = OPAx->CR; // save
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for(;;)
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{
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if(0 == CalDB)
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return 0;
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CalDB--;
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opatmp32 = OPAx->CR & (~OPA_OP1_COF);
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OPAx->CR = opatmp32 | (CalDB << 1);
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opadelay = delay_time;
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while(opadelay--);
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if( (outstate ^ OPAx->CR) & OPA_OP1_OUT )
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break;
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}
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CalDA+= CalDB;
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CalDA/= 2;
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opatmp32 = OPAx->CR & (~OPA_OP1_COF);
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OPAx->CR = opatmp32 | (CalDA << 1);
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#else
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/* OP0COF = 10000 */
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OPAx->CR &= ~OPA_OP1_COF;
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OPAx->CR |= OPA_OP1_COF_4;
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CalDA = 0;
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opadelay = delay_time;
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while(opadelay--);
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outstate = OPAx->CR; // save
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for(;;)
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{
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CalDA++;
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if(CalDA >= 0x0F)
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return 0;
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opatmp32 = OPAx->CR & (~OPA_OP1_COF);
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OPAx->CR = opatmp32 | (CalDA << 1);
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opadelay = delay_time;
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while(opadelay--);
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if((outstate^OPAx->CR) & OPA_OP1_OUT)
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break;
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}
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OPAx->CR &= ~OPA_OP1_COF;
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OPAx->CR |= OPA_OP1_COF_0 | OPA_OP1_COF_1 | OPA_OP1_COF_2 | OPA_OP1_COF_3; //0x0F
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CalDB = 0x0F;
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opadelay = delay_time;
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while(opadelay--);
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outstate = OPAx->CR; // save
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for(;;)
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{
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if(0 == CalDB)
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return 0;
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CalDB--;
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opatmp32 = OPAx->CR & (~OPA_OP1_COF);
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OPAx->CR = opatmp32 | (CalDB << 1);
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opadelay = delay_time;
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while(opadelay--);
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if( (outstate^OPAx->CR) & OPA_OP1_OUT )
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break;
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}
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CalDA+= CalDB;
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CalDA/= 2;
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opatmp32 = OPAx->CR & (~OPA_OP1_COF);
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OPAx->CR = opatmp32 | (CalDA << 1);
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#endif
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return CalDA;
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}
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/**
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* @}
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*/
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/**
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* @}
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*/
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/**
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* @}
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*/
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/**
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* @}
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*/
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/************************ (C) COPYRIGHT FMD *****END OF FILE****/
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