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-rw-r--r--drivers/fsl_cmp.c295
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diff --git a/drivers/fsl_cmp.c b/drivers/fsl_cmp.c
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+/*
+ * The Clear BSD License
+ * Copyright (c) 2015, Freescale Semiconductor, Inc.
+ * Copyright 2016-2017 NXP
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted (subject to the limitations in the disclaimer below) provided
+ * that the following conditions are met:
+ *
+ * o Redistributions of source code must retain the above copyright notice, this list
+ * of conditions and the following disclaimer.
+ *
+ * o Redistributions in binary form must reproduce the above copyright notice, this
+ * list of conditions and the following disclaimer in the documentation and/or
+ * other materials provided with the distribution.
+ *
+ * o Neither the name of the copyright holder nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE.
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#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;
+}
+
+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 = base->CR1 & ~(CMP_CR1_PMODE_MASK | CMP_CR1_INV_MASK | CMP_CR1_COS_MASK | CMP_CR1_OPE_MASK);
+ if (config->enableHighSpeed)
+ {
+ tmp8 |= CMP_CR1_PMODE_MASK;
+ }
+ if (config->enableInvertOutput)
+ {
+ tmp8 |= CMP_CR1_INV_MASK;
+ }
+ if (config->useUnfilteredOutput)
+ {
+ tmp8 |= CMP_CR1_COS_MASK;
+ }
+ if (config->enablePinOut)
+ {
+ tmp8 |= CMP_CR1_OPE_MASK;
+ }
+#if defined(FSL_FEATURE_CMP_HAS_TRIGGER_MODE) && FSL_FEATURE_CMP_HAS_TRIGGER_MODE
+ if (config->enableTriggerMode)
+ {
+ tmp8 |= CMP_CR1_TRIGM_MASK;
+ }
+ else
+ {
+ tmp8 &= ~CMP_CR1_TRIGM_MASK;
+ }
+#endif /* FSL_FEATURE_CMP_HAS_TRIGGER_MODE */
+ base->CR1 = tmp8;
+
+ /* CMPx_CR0. */
+ tmp8 = base->CR0 & ~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. */
+}
+
+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 */
+}
+
+void CMP_GetDefaultConfig(cmp_config_t *config)
+{
+ assert(NULL != 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 */
+}
+
+void CMP_SetInputChannels(CMP_Type *base, uint8_t positiveChannel, uint8_t negativeChannel)
+{
+ uint8_t tmp8 = base->MUXCR;
+
+ tmp8 &= ~(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
+void CMP_EnableDMA(CMP_Type *base, bool enable)
+{
+ uint8_t tmp8 = 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 &= ~CMP_SCR_DMAEN_MASK;
+ }
+ base->SCR = tmp8;
+}
+#endif /* FSL_FEATURE_CMP_HAS_DMA */
+
+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 &= ~CMP_CR1_SE_MASK; /* Choose the internal divided bus clock. */
+ }
+#endif /* FSL_FEATURE_CMP_HAS_EXTERNAL_SAMPLE_SUPPORT */
+ /* Set the filter count. */
+ tmp8 = 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);
+}
+
+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;
+}
+
+void CMP_EnableInterrupts(CMP_Type *base, uint32_t mask)
+{
+ uint8_t tmp8 = base->SCR & ~(CMP_SCR_CFR_MASK | CMP_SCR_CFF_MASK); /* To avoid change the w1c bits. */
+
+ if (0U != (kCMP_OutputRisingInterruptEnable & mask))
+ {
+ tmp8 |= CMP_SCR_IER_MASK;
+ }
+ if (0U != (kCMP_OutputFallingInterruptEnable & mask))
+ {
+ tmp8 |= CMP_SCR_IEF_MASK;
+ }
+ base->SCR = tmp8;
+}
+
+void CMP_DisableInterrupts(CMP_Type *base, uint32_t mask)
+{
+ uint8_t tmp8 = base->SCR & ~(CMP_SCR_CFR_MASK | CMP_SCR_CFF_MASK); /* To avoid change the w1c bits. */
+
+ if (0U != (kCMP_OutputRisingInterruptEnable & mask))
+ {
+ tmp8 &= ~CMP_SCR_IER_MASK;
+ }
+ if (0U != (kCMP_OutputFallingInterruptEnable & mask))
+ {
+ tmp8 &= ~CMP_SCR_IEF_MASK;
+ }
+ base->SCR = tmp8;
+}
+
+uint32_t CMP_GetStatusFlags(CMP_Type *base)
+{
+ uint32_t ret32 = 0U;
+
+ if (0U != (CMP_SCR_CFR_MASK & base->SCR))
+ {
+ ret32 |= kCMP_OutputRisingEventFlag;
+ }
+ if (0U != (CMP_SCR_CFF_MASK & base->SCR))
+ {
+ ret32 |= kCMP_OutputFallingEventFlag;
+ }
+ if (0U != (CMP_SCR_COUT_MASK & base->SCR))
+ {
+ ret32 |= kCMP_OutputAssertEventFlag;
+ }
+ return ret32;
+}
+
+void CMP_ClearStatusFlags(CMP_Type *base, uint32_t mask)
+{
+ uint8_t tmp8 = base->SCR & ~(CMP_SCR_CFR_MASK | CMP_SCR_CFF_MASK); /* To avoid change the w1c bits. */
+
+ if (0U != (kCMP_OutputRisingEventFlag & mask))
+ {
+ tmp8 |= CMP_SCR_CFR_MASK;
+ }
+ if (0U != (kCMP_OutputFallingEventFlag & mask))
+ {
+ tmp8 |= CMP_SCR_CFF_MASK;
+ }
+ base->SCR = tmp8;
+}



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