diff options
Diffstat (limited to 'bsps/arm/imxrt/nxp/devices/MIMXRT1052/drivers/fsl_cmp.c')
| -rw-r--r-- | bsps/arm/imxrt/nxp/devices/MIMXRT1052/drivers/fsl_cmp.c | 371 |
1 files changed, 371 insertions, 0 deletions
diff --git a/bsps/arm/imxrt/nxp/devices/MIMXRT1052/drivers/fsl_cmp.c b/bsps/arm/imxrt/nxp/devices/MIMXRT1052/drivers/fsl_cmp.c new file mode 100644 index 0000000000..8f6bed69b4 --- /dev/null +++ b/bsps/arm/imxrt/nxp/devices/MIMXRT1052/drivers/fsl_cmp.c @@ -0,0 +1,371 @@ +/* + * Copyright (c) 2015, Freescale Semiconductor, Inc. + * Copyright 2016-2019 NXP + * All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include "fsl_cmp.h" + +/* Component ID definition, used by tools. */ +#ifndef FSL_COMPONENT_ID +#define FSL_COMPONENT_ID "platform.drivers.cmp" +#endif + +/******************************************************************************* + * Prototypes + ******************************************************************************/ +/*! + * @brief Get instance number for CMP module. + * + * @param base CMP peripheral base address + */ +static uint32_t CMP_GetInstance(CMP_Type *base); + +/******************************************************************************* + * Variables + ******************************************************************************/ +/*! @brief Pointers to CMP bases for each instance. */ +static CMP_Type *const s_cmpBases[] = CMP_BASE_PTRS; +#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) +/*! @brief Pointers to CMP clocks for each instance. */ +static const clock_ip_name_t s_cmpClocks[] = CMP_CLOCKS; +#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */ + +/******************************************************************************* + * Codes + ******************************************************************************/ +static uint32_t CMP_GetInstance(CMP_Type *base) +{ + uint32_t instance; + + /* Find the instance index from base address mappings. */ + for (instance = 0; instance < ARRAY_SIZE(s_cmpBases); instance++) + { + if (s_cmpBases[instance] == base) + { + break; + } + } + + assert(instance < ARRAY_SIZE(s_cmpBases)); + + return instance; +} + +/*! + * brief Initializes the CMP. + * + * This function initializes the CMP module. The operations included are as follows. + * - Enabling the clock for CMP module. + * - Configuring the comparator. + * - Enabling the CMP module. + * Note that for some devices, multiple CMP instances share the same clock gate. In this case, to enable the clock for + * any instance enables all CMPs. See the appropriate MCU reference manual for the clock assignment of the CMP. + * + * param base CMP peripheral base address. + * param config Pointer to the configuration structure. + */ +void CMP_Init(CMP_Type *base, const cmp_config_t *config) +{ + assert(NULL != config); + + uint8_t tmp8; + +#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) + /* Enable the clock. */ + CLOCK_EnableClock(s_cmpClocks[CMP_GetInstance(base)]); +#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */ + + /* Configure. */ + CMP_Enable(base, false); /* Disable the CMP module during configuring. */ + /* CMPx_CR1. */ + tmp8 = (uint8_t)(base->CR1 & ~(CMP_CR1_PMODE_MASK | CMP_CR1_INV_MASK | CMP_CR1_COS_MASK | CMP_CR1_OPE_MASK)); + if (true == config->enableHighSpeed) + { + tmp8 |= CMP_CR1_PMODE_MASK; + } + if (true == config->enableInvertOutput) + { + tmp8 |= CMP_CR1_INV_MASK; + } + if (true == config->useUnfilteredOutput) + { + tmp8 |= CMP_CR1_COS_MASK; + } + if (true == config->enablePinOut) + { + tmp8 |= CMP_CR1_OPE_MASK; + } +#if defined(FSL_FEATURE_CMP_HAS_TRIGGER_MODE) && FSL_FEATURE_CMP_HAS_TRIGGER_MODE + if (true == config->enableTriggerMode) + { + tmp8 |= CMP_CR1_TRIGM_MASK; + } + else + { + tmp8 &= ~(uint8_t)CMP_CR1_TRIGM_MASK; + } +#endif /* FSL_FEATURE_CMP_HAS_TRIGGER_MODE */ + base->CR1 = tmp8; + + /* CMPx_CR0. */ + tmp8 = base->CR0 & ~(uint8_t)CMP_CR0_HYSTCTR_MASK; + tmp8 |= CMP_CR0_HYSTCTR(config->hysteresisMode); + base->CR0 = tmp8; + + CMP_Enable(base, config->enableCmp); /* Enable the CMP module after configured or not. */ +} + +/*! + * brief De-initializes the CMP module. + * + * This function de-initializes the CMP module. The operations included are as follows. + * - Disabling the CMP module. + * - Disabling the clock for CMP module. + * + * This function disables the clock for the CMP. + * Note that for some devices, multiple CMP instances share the same clock gate. In this case, before disabling the + * clock for the CMP, ensure that all the CMP instances are not used. + * + * param base CMP peripheral base address. + */ +void CMP_Deinit(CMP_Type *base) +{ + /* Disable the CMP module. */ + CMP_Enable(base, false); + +#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) + /* Disable the clock. */ + CLOCK_DisableClock(s_cmpClocks[CMP_GetInstance(base)]); +#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */ +} + +/*! + * brief Initializes the CMP user configuration structure. + * + * This function initializes the user configuration structure to these default values. + * code + * config->enableCmp = true; + * config->hysteresisMode = kCMP_HysteresisLevel0; + * config->enableHighSpeed = false; + * config->enableInvertOutput = false; + * config->useUnfilteredOutput = false; + * config->enablePinOut = false; + * config->enableTriggerMode = false; + * endcode + * param config Pointer to the configuration structure. + */ +void CMP_GetDefaultConfig(cmp_config_t *config) +{ + assert(NULL != config); + + /* Initializes the configure structure to zero. */ + (void)memset(config, 0, sizeof(*config)); + + config->enableCmp = true; /* Enable the CMP module after initialization. */ + config->hysteresisMode = kCMP_HysteresisLevel0; + config->enableHighSpeed = false; + config->enableInvertOutput = false; + config->useUnfilteredOutput = false; + config->enablePinOut = false; +#if defined(FSL_FEATURE_CMP_HAS_TRIGGER_MODE) && FSL_FEATURE_CMP_HAS_TRIGGER_MODE + config->enableTriggerMode = false; +#endif /* FSL_FEATURE_CMP_HAS_TRIGGER_MODE */ +} + +/*! + * brief Sets the input channels for the comparator. + * + * This function sets the input channels for the comparator. + * Note that two input channels cannot be set the same way in the application. When the user selects the same input + * from the analog mux to the positive and negative port, the comparator is disabled automatically. + * + * param base CMP peripheral base address. + * param positiveChannel Positive side input channel number. Available range is 0-7. + * param negativeChannel Negative side input channel number. Available range is 0-7. + */ +void CMP_SetInputChannels(CMP_Type *base, uint8_t positiveChannel, uint8_t negativeChannel) +{ + uint8_t tmp8 = base->MUXCR; + + tmp8 &= ~(uint8_t)(CMP_MUXCR_PSEL_MASK | CMP_MUXCR_MSEL_MASK); + tmp8 |= CMP_MUXCR_PSEL(positiveChannel) | CMP_MUXCR_MSEL(negativeChannel); + base->MUXCR = tmp8; +} + +#if defined(FSL_FEATURE_CMP_HAS_DMA) && FSL_FEATURE_CMP_HAS_DMA +/*! + * brief Enables/disables the DMA request for rising/falling events. + * + * This function enables/disables the DMA request for rising/falling events. Either event triggers the generation of + * the DMA request from CMP if the DMA feature is enabled. Both events are ignored for generating the DMA request from + * the CMP + * if the DMA is disabled. + * + * param base CMP peripheral base address. + * param enable Enables or disables the feature. + */ +void CMP_EnableDMA(CMP_Type *base, bool enable) +{ + uint8_t tmp8 = (uint8_t)(base->SCR & ~(CMP_SCR_CFR_MASK | CMP_SCR_CFF_MASK)); /* To avoid change the w1c bits. */ + + if (enable) + { + tmp8 |= CMP_SCR_DMAEN_MASK; + } + else + { + tmp8 &= ~(uint8_t)CMP_SCR_DMAEN_MASK; + } + base->SCR = tmp8; +} +#endif /* FSL_FEATURE_CMP_HAS_DMA */ + +/*! + * brief Configures the filter. + * + * param base CMP peripheral base address. + * param config Pointer to the configuration structure. + */ +void CMP_SetFilterConfig(CMP_Type *base, const cmp_filter_config_t *config) +{ + assert(NULL != config); + + uint8_t tmp8; + +#if defined(FSL_FEATURE_CMP_HAS_EXTERNAL_SAMPLE_SUPPORT) && FSL_FEATURE_CMP_HAS_EXTERNAL_SAMPLE_SUPPORT + /* Choose the clock source for sampling. */ + if (config->enableSample) + { + base->CR1 |= CMP_CR1_SE_MASK; /* Choose the external SAMPLE clock. */ + } + else + { + base->CR1 &= (uint8_t)(~CMP_CR1_SE_MASK); /* Choose the internal divided bus clock. */ + } +#endif /* FSL_FEATURE_CMP_HAS_EXTERNAL_SAMPLE_SUPPORT */ + /* Set the filter count. */ + tmp8 = (uint8_t)(base->CR0 & ~CMP_CR0_FILTER_CNT_MASK); + tmp8 |= CMP_CR0_FILTER_CNT(config->filterCount); + base->CR0 = tmp8; + /* Set the filter period. It is used as the divider to bus clock. */ + base->FPR = CMP_FPR_FILT_PER(config->filterPeriod); +} + +/*! + * brief Configures the internal DAC. + * + * param base CMP peripheral base address. + * param config Pointer to the configuration structure. "NULL" disables the feature. + */ +void CMP_SetDACConfig(CMP_Type *base, const cmp_dac_config_t *config) +{ + uint8_t tmp8 = 0U; + + if (NULL == config) + { + /* Passing "NULL" as input parameter means no available configuration. So the DAC feature is disabled.*/ + base->DACCR = 0U; + return; + } + /* CMPx_DACCR. */ + tmp8 |= CMP_DACCR_DACEN_MASK; /* Enable the internal DAC. */ + if (kCMP_VrefSourceVin2 == config->referenceVoltageSource) + { + tmp8 |= CMP_DACCR_VRSEL_MASK; + } + tmp8 |= CMP_DACCR_VOSEL(config->DACValue); + + base->DACCR = tmp8; +} + +/*! + * brief Enables the interrupts. + * + * param base CMP peripheral base address. + * param mask Mask value for interrupts. See "_cmp_interrupt_enable". + */ +void CMP_EnableInterrupts(CMP_Type *base, uint32_t mask) +{ + uint8_t tmp8 = (uint8_t)(base->SCR & ~(CMP_SCR_CFR_MASK | CMP_SCR_CFF_MASK)); /* To avoid change the w1c bits. */ + + if (0U != ((uint32_t)kCMP_OutputRisingInterruptEnable & mask)) + { + tmp8 |= CMP_SCR_IER_MASK; + } + if (0U != ((uint32_t)kCMP_OutputFallingInterruptEnable & mask)) + { + tmp8 |= CMP_SCR_IEF_MASK; + } + base->SCR = tmp8; +} + +/*! + * brief Disables the interrupts. + * + * param base CMP peripheral base address. + * param mask Mask value for interrupts. See "_cmp_interrupt_enable". + */ +void CMP_DisableInterrupts(CMP_Type *base, uint32_t mask) +{ + uint8_t tmp8 = (uint8_t)(base->SCR & ~(CMP_SCR_CFR_MASK | CMP_SCR_CFF_MASK)); /* To avoid change the w1c bits. */ + + if (0U != ((uint32_t)kCMP_OutputRisingInterruptEnable & mask)) + { + tmp8 &= ~(uint8_t)CMP_SCR_IER_MASK; + } + if (0U != ((uint32_t)kCMP_OutputFallingInterruptEnable & mask)) + { + tmp8 &= ~(uint8_t)CMP_SCR_IEF_MASK; + } + base->SCR = tmp8; +} + +/*! + * brief Gets the status flags. + * + * param base CMP peripheral base address. + * + * return Mask value for the asserted flags. See "_cmp_status_flags". + */ +uint32_t CMP_GetStatusFlags(CMP_Type *base) +{ + uint32_t ret32 = 0U; + + if (0U != (CMP_SCR_CFR_MASK & base->SCR)) + { + ret32 |= (uint32_t)kCMP_OutputRisingEventFlag; + } + if (0U != (CMP_SCR_CFF_MASK & base->SCR)) + { + ret32 |= (uint32_t)kCMP_OutputFallingEventFlag; + } + if (0U != (CMP_SCR_COUT_MASK & base->SCR)) + { + ret32 |= (uint32_t)kCMP_OutputAssertEventFlag; + } + return ret32; +} + +/*! + * brief Clears the status flags. + * + * param base CMP peripheral base address. + * param mask Mask value for the flags. See "_cmp_status_flags". + */ +void CMP_ClearStatusFlags(CMP_Type *base, uint32_t mask) +{ + uint8_t tmp8 = (uint8_t)(base->SCR & ~(CMP_SCR_CFR_MASK | CMP_SCR_CFF_MASK)); /* To avoid change the w1c bits. */ + + if (0U != ((uint32_t)kCMP_OutputRisingEventFlag & mask)) + { + tmp8 |= CMP_SCR_CFR_MASK; + } + if (0U != ((uint32_t)kCMP_OutputFallingEventFlag & mask)) + { + tmp8 |= CMP_SCR_CFF_MASK; + } + base->SCR = tmp8; +} |