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Posted to commits@mynewt.apache.org by ma...@apache.org on 2016/10/11 16:25:37 UTC
[18/45] incubator-mynewt-core git commit: add Kinetis SDK 2.0 built
for FRDM-K64F
http://git-wip-us.apache.org/repos/asf/incubator-mynewt-core/blob/f8f2ebbf/hw/mcu/nxp/src/ext/sdk-2.0-frdm-k64f_b160321/devices/MK64F12/drivers/fsl_flexcan.c
----------------------------------------------------------------------
diff --git a/hw/mcu/nxp/src/ext/sdk-2.0-frdm-k64f_b160321/devices/MK64F12/drivers/fsl_flexcan.c b/hw/mcu/nxp/src/ext/sdk-2.0-frdm-k64f_b160321/devices/MK64F12/drivers/fsl_flexcan.c
new file mode 100644
index 0000000..5a1028b
--- /dev/null
+++ b/hw/mcu/nxp/src/ext/sdk-2.0-frdm-k64f_b160321/devices/MK64F12/drivers/fsl_flexcan.c
@@ -0,0 +1,1314 @@
+/*
+ * Copyright (c) 2015, Freescale Semiconductor, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted 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 Freescale Semiconductor, Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * 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_flexcan.h"
+
+/*******************************************************************************
+ * Definitons
+ ******************************************************************************/
+
+#define FLEXCAN_TIME_QUANTA_NUM (10)
+
+/*! @brief FlexCAN Internal State. */
+enum _flexcan_state
+{
+ kFLEXCAN_StateIdle = 0x0, /*!< MB/RxFIFO idle.*/
+ kFLEXCAN_StateRxData = 0x1, /*!< MB receiving.*/
+ kFLEXCAN_StateRxRemote = 0x2, /*!< MB receiving remote reply.*/
+ kFLEXCAN_StateTxData = 0x3, /*!< MB transmitting.*/
+ kFLEXCAN_StateTxRemote = 0x4, /*!< MB transmitting remote request.*/
+ kFLEXCAN_StateRxFifo = 0x5, /*!< RxFIFO receiving.*/
+};
+
+/*! @brief FlexCAN message buffer CODE for Rx buffers. */
+enum _flexcan_mb_code_rx
+{
+ kFLEXCAN_RxMbInactive = 0x0, /*!< MB is not active.*/
+ kFLEXCAN_RxMbFull = 0x2, /*!< MB is full.*/
+ kFLEXCAN_RxMbEmpty = 0x4, /*!< MB is active and empty.*/
+ kFLEXCAN_RxMbOverrun = 0x6, /*!< MB is overwritten into a full buffer.*/
+ kFLEXCAN_RxMbBusy = 0x8, /*!< FlexCAN is updating the contents of the MB.*/
+ /*! The CPU must not access the MB.*/
+ kFLEXCAN_RxMbRanswer = 0xA, /*!< A frame was configured to recognize a Remote Request Frame */
+ /*! and transmit a Response Frame in return.*/
+ kFLEXCAN_RxMbNotUsed = 0xF, /*!< Not used.*/
+};
+
+/*! @brief FlexCAN message buffer CODE FOR Tx buffers. */
+enum _flexcan_mb_code_tx
+{
+ kFLEXCAN_TxMbInactive = 0x8, /*!< MB is not active.*/
+ kFLEXCAN_TxMbAbort = 0x9, /*!< MB is aborted.*/
+ kFLEXCAN_TxMbDataOrRemote = 0xC, /*!< MB is a TX Data Frame(when MB RTR = 0) or */
+ /*!< MB is a TX Remote Request Frame (when MB RTR = 1).*/
+ kFLEXCAN_TxMbTanswer = 0xE, /*!< MB is a TX Response Request Frame from */
+ /*! an incoming Remote Request Frame.*/
+ kFLEXCAN_TxMbNotUsed = 0xF, /*!< Not used.*/
+};
+
+/*******************************************************************************
+ * Prototypes
+ ******************************************************************************/
+
+/*!
+ * @brief Get the FlexCAN instance from peripheral base address.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @return FlexCAN instance.
+ */
+uint32_t FLEXCAN_GetInstance(CAN_Type *base);
+
+/*!
+ * @brief Enter FlexCAN Fraze Mode.
+ *
+ * This function makes the FlexCAN work under Fraze Mode.
+ *
+ * @param base FlexCAN peripheral base address.
+ */
+static void FLEXCAN_EnterFrazeMode(CAN_Type *base);
+
+/*!
+ * @brief Exit FlexCAN Fraze Mode.
+ *
+ * This function makes the FlexCAN leave Fraze Mode.
+ *
+ * @param base FlexCAN peripheral base address.
+ */
+static void FLEXCAN_ExitFrazeMode(CAN_Type *base);
+
+/*!
+ * @brief Check if Message Buffer is occupied by Rx FIFO.
+ *
+ * This function check if Message Buffer is occupied by Rx FIFO.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param mbIdx The FlexCAN Message Buffer index.
+ */
+static bool FLEXCAN_IsMbOccupied(CAN_Type *base, uint8_t mbIdx);
+
+/*!
+ * @brief Check if Message Buffer interrupt is enabled.
+ *
+ * This function check if Message Buffer interrupt is enabled.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param mbIdx The FlexCAN Message Buffer index.
+ */
+static bool FLEXCAN_IsMbIntEnabled(CAN_Type *base, uint8_t mbIdx);
+
+/*!
+ * @brief Reset the FlexCAN Instance.
+ *
+ * Restores the FlexCAN module to reset state, notice that this function
+ * will set all the registers to reset state so the FlexCAN module can not work
+ * after calling this API.
+ *
+ * @param base FlexCAN peripheral base address.
+*/
+static void FLEXCAN_Reset(CAN_Type *base);
+
+/*!
+ * @brief Set Baud Rate of FlexCAN.
+ *
+ * This function set the baud rate of FlexCAN.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param sourceClock_Hz Source Clock in Hz.
+ * @param baudRate_Bps Baud Rate in Bps.
+ */
+static void FLEXCAN_SetBaudRate(CAN_Type *base, uint32_t sourceClock_Hz, uint32_t baudRate_Bps);
+
+/*******************************************************************************
+ * Variables
+ ******************************************************************************/
+/* Array of FlexCAN handle. */
+static flexcan_handle_t *s_flexcanHandle[FSL_FEATURE_SOC_FLEXCAN_COUNT];
+
+/* Array of FlexCAN peripheral base address. */
+static CAN_Type *const s_flexcanBases[] = CAN_BASE_PTRS;
+
+/* Array of FlexCAN IRQ number. */
+static const IRQn_Type s_flexcanRxWarningIRQ[] = CAN_Rx_Warning_IRQS;
+static const IRQn_Type s_flexcanTxWarningIRQ[] = CAN_Tx_Warning_IRQS;
+static const IRQn_Type s_flexcanWakeUpIRQ[] = CAN_Wake_Up_IRQS;
+static const IRQn_Type s_flexcanErrorIRQ[] = CAN_Error_IRQS;
+static const IRQn_Type s_flexcanBusOffIRQ[] = CAN_Bus_Off_IRQS;
+static const IRQn_Type s_flexcanMbIRQ[] = CAN_ORed_Message_buffer_IRQS;
+
+/* Array of FlexCAN clock name. */
+static const clock_ip_name_t s_flexcanClock[] = FLEXCAN_CLOCKS;
+
+/*******************************************************************************
+ * Code
+ ******************************************************************************/
+
+uint32_t FLEXCAN_GetInstance(CAN_Type *base)
+{
+ uint32_t instance;
+
+ /* Find the instance index from base address mappings. */
+ for (instance = 0; instance < FSL_FEATURE_SOC_FLEXCAN_COUNT; instance++)
+ {
+ if (s_flexcanBases[instance] == base)
+ {
+ break;
+ }
+ }
+
+ assert(instance < FSL_FEATURE_SOC_FLEXCAN_COUNT);
+
+ return instance;
+}
+
+static void FLEXCAN_EnterFrazeMode(CAN_Type *base)
+{
+ /* Set Freeze, Halt bits. */
+ base->MCR |= CAN_MCR_FRZ_MASK | CAN_MCR_HALT_MASK;
+
+ /* Wait until the FlexCAN Module enter freeze mode. */
+ while (!(base->MCR & CAN_MCR_FRZACK_MASK))
+ {
+ }
+}
+
+static void FLEXCAN_ExitFrazeMode(CAN_Type *base)
+{
+ /* Clear Freeze, Halt bits. */
+ base->MCR &= ~(CAN_MCR_FRZ_MASK | CAN_MCR_HALT_MASK);
+
+ /* Wait until the FlexCAN Module exit freeze mode. */
+ while (base->MCR & CAN_MCR_FRZACK_MASK)
+ {
+ }
+}
+
+static bool FLEXCAN_IsMbOccupied(CAN_Type *base, uint8_t mbIdx)
+{
+ uint8_t lastOccupiedMb;
+
+ /* Is Rx FIFO enabled? */
+ if (base->MCR & CAN_MCR_RFEN_MASK)
+ {
+ /* Get RFFN value. */
+ lastOccupiedMb = ((base->CTRL2 & CAN_CTRL2_RFFN_MASK) >> CAN_CTRL2_RFFN_SHIFT);
+ /* Calculate the number of last Message Buffer occupied by Rx FIFO. */
+ lastOccupiedMb = ((lastOccupiedMb + 1) * 2) + 5;
+
+ if (mbIdx <= lastOccupiedMb)
+ {
+ return true;
+ }
+ else
+ {
+ return false;
+ }
+ }
+ else
+ {
+ return false;
+ }
+}
+
+static bool FLEXCAN_IsMbIntEnabled(CAN_Type *base, uint8_t mbIdx)
+{
+ /* Assertion. */
+ assert(mbIdx < FSL_FEATURE_FLEXCAN_HAS_MESSAGE_BUFFER_MAX_NUMBERn(base));
+
+#if (FSL_FEATURE_FLEXCAN_HAS_EXTENDED_FLAG_REGISTER > 0)
+ if (mbIdx < 32)
+ {
+#endif
+ if (base->IMASK1 & ((uint32_t)(1 << mbIdx)))
+ {
+ return true;
+ }
+ else
+ {
+ return false;
+ }
+#if (FSL_FEATURE_FLEXCAN_HAS_EXTENDED_FLAG_REGISTER > 0)
+ }
+ else
+ {
+ if (base->IMASK2 & ((uint32_t)(1 << (mbIdx - 32))))
+ return true;
+ else
+ return false;
+ }
+#endif
+}
+
+static void FLEXCAN_Reset(CAN_Type *base)
+{
+ /* The module must should be first exit from low power
+ * mode, and then soft reset can be applied.
+ */
+ assert(!(base->MCR & CAN_MCR_MDIS_MASK));
+
+ uint8_t i;
+
+#if (FSL_FEATURE_FLEXCAN_HAS_DOZE_MODE_SUPPORT != 0)
+ /* De-assert DOZE Enable Bit. */
+ base->MCR &= ~CAN_MCR_DOZE_MASK;
+#endif
+
+ /* Wait until FlexCAN exit from any Low Power Mode. */
+ while (base->MCR & CAN_MCR_LPMACK_MASK)
+ {
+ }
+
+ /* Assert Soft Reset Signal. */
+ base->MCR |= CAN_MCR_SOFTRST_MASK;
+ /* Wait until FlexCAN reset completes. */
+ while (base->MCR & CAN_MCR_SOFTRST_MASK)
+ {
+ }
+
+/* Reset MCR rigister. */
+#if (defined(FSL_FEATURE_FLEXCAN_HAS_GLITCH_FILTER) && FSL_FEATURE_FLEXCAN_HAS_GLITCH_FILTER)
+ base->MCR |= CAN_MCR_WRNEN_MASK | CAN_MCR_WAKSRC_MASK |
+ CAN_MCR_MAXMB(FSL_FEATURE_FLEXCAN_HAS_MESSAGE_BUFFER_MAX_NUMBERn(base) - 1);
+#else
+ base->MCR |= CAN_MCR_WRNEN_MASK | CAN_MCR_MAXMB(FSL_FEATURE_FLEXCAN_HAS_MESSAGE_BUFFER_MAX_NUMBERn(base) - 1);
+#endif
+
+ /* Reset CTRL1 and CTRL2 rigister. */
+ base->CTRL1 = CAN_CTRL1_SMP_MASK;
+ base->CTRL2 = CAN_CTRL2_TASD(0x16) | CAN_CTRL2_RRS_MASK | CAN_CTRL2_EACEN_MASK;
+
+ /* Clean all individual Rx Mask of Message Buffers. */
+ for (i = 0; i < FSL_FEATURE_FLEXCAN_HAS_MESSAGE_BUFFER_MAX_NUMBERn(base); i++)
+ {
+ base->RXIMR[i] = 0x3FFFFFFF;
+ }
+
+ /* Clean Global Mask of Message Buffers. */
+ base->RXMGMASK = 0x3FFFFFFF;
+ /* Clean Global Mask of Message Buffer 14. */
+ base->RX14MASK = 0x3FFFFFFF;
+ /* Clean Global Mask of Message Buffer 15. */
+ base->RX15MASK = 0x3FFFFFFF;
+ /* Clean Global Mask of Rx FIFO. */
+ base->RXFGMASK = 0x3FFFFFFF;
+
+ /* Clean all Message Buffer CS fields. */
+ for (i = 0; i < FSL_FEATURE_FLEXCAN_HAS_MESSAGE_BUFFER_MAX_NUMBERn(base); i++)
+ {
+ base->MB[i].CS = 0x0;
+ }
+}
+
+static void FLEXCAN_SetBaudRate(CAN_Type *base, uint32_t sourceClock_Hz, uint32_t baudRate_Bps)
+{
+ flexcan_timing_config_t timingConfig;
+ uint32_t priDiv = baudRate_Bps * FLEXCAN_TIME_QUANTA_NUM;
+
+ /* Assertion: Desired baud rate is too high. */
+ assert(baudRate_Bps <= 1000000U);
+ /* Assertion: Source clock should greater than baud rate * FLEXCAN_TIME_QUANTA_NUM. */
+ assert(priDiv <= sourceClock_Hz);
+
+ if (0 == priDiv)
+ {
+ priDiv = 1;
+ }
+
+ priDiv = (sourceClock_Hz / priDiv) - 1;
+
+ /* Desired baud rate is too low. */
+ if (priDiv > 0xFF)
+ {
+ priDiv = 0xFF;
+ }
+
+ /* FlexCAN timing setting formula:
+ * FLEXCAN_TIME_QUANTA_NUM = 1 + (PSEG1 + 1) + (PSEG2 + 1) + (PROPSEG + 1);
+ */
+ timingConfig.preDivider = priDiv;
+ timingConfig.phaseSeg1 = 3;
+ timingConfig.phaseSeg2 = 2;
+ timingConfig.propSeg = 1;
+ timingConfig.rJumpwidth = 1;
+
+ /* Update actual timing characteristic. */
+ FLEXCAN_SetTimingConfig(base, &timingConfig);
+}
+
+void FLEXCAN_Init(CAN_Type *base, const flexcan_config_t *config, uint32_t sourceClock_Hz)
+{
+ uint32_t mcrTemp;
+
+ /* Assertion. */
+ assert(config);
+ assert((config->maxMbNum > 0) && (config->maxMbNum <= FSL_FEATURE_FLEXCAN_HAS_MESSAGE_BUFFER_MAX_NUMBERn(base)));
+
+ /* Enable FlexCAN clock. */
+ CLOCK_EnableClock(s_flexcanClock[FLEXCAN_GetInstance(base)]);
+
+ /* Disable FlexCAN Module. */
+ FLEXCAN_Enable(base, false);
+
+ /* Protocol-Engine clock source selection, This bit must be set
+ * when FlexCAN Module in Disable Mode.
+ */
+ base->CTRL1 = (kFLEXCAN_ClkSrcOsc == config->clkSrc) ? base->CTRL1 & ~CAN_CTRL1_CLKSRC_MASK :
+ base->CTRL1 | CAN_CTRL1_CLKSRC_MASK;
+
+ /* Enable FlexCAN Module for configuartion. */
+ FLEXCAN_Enable(base, true);
+
+ /* Reset to known status. */
+ FLEXCAN_Reset(base);
+
+ /* Save current MCR value. */
+ mcrTemp = base->MCR;
+
+ /* Set the maximum number of Message Buffers */
+ mcrTemp = (mcrTemp & ~CAN_MCR_MAXMB_MASK) | CAN_MCR_MAXMB(config->maxMbNum - 1);
+
+ /* Enable Loop Back Mode? */
+ base->CTRL1 = (config->enableLoopBack) ? base->CTRL1 | CAN_CTRL1_LPB_MASK : base->CTRL1 & ~CAN_CTRL1_LPB_MASK;
+
+ /* Enable Self Wake Up Mode? */
+ mcrTemp = (config->enableSelfWakeup) ? mcrTemp | CAN_MCR_SLFWAK_MASK : mcrTemp & ~CAN_MCR_SLFWAK_MASK;
+
+ /* Enable Individual Rx Masking? */
+ mcrTemp = (config->enableIndividMask) ? mcrTemp | CAN_MCR_IRMQ_MASK : mcrTemp & ~CAN_MCR_IRMQ_MASK;
+
+#if (defined(FSL_FEATURE_FLEXCAN_HAS_DOZE_MODE_SUPPORT) && FSL_FEATURE_FLEXCAN_HAS_DOZE_MODE_SUPPORT)
+ /* Enable Doze Mode? */
+ mcrTemp = (config->enableDoze) ? mcrTemp | CAN_MCR_DOZE_MASK : mcrTemp & ~CAN_MCR_DOZE_MASK;
+#endif
+
+ /* Save MCR Configuation. */
+ base->MCR = mcrTemp;
+
+ /* Baud Rate Configuration.*/
+ FLEXCAN_SetBaudRate(base, sourceClock_Hz, config->baudRate);
+}
+
+void FLEXCAN_Deinit(CAN_Type *base)
+{
+ /* Reset all Register Contents. */
+ FLEXCAN_Reset(base);
+
+ /* Disable FlexCAN module. */
+ FLEXCAN_Enable(base, false);
+
+ /* Disable FlexCAN clock. */
+ CLOCK_DisableClock(s_flexcanClock[FLEXCAN_GetInstance(base)]);
+}
+
+void FLEXCAN_GetDefaultConfig(flexcan_config_t *config)
+{
+ /* Assertion. */
+ assert(config);
+
+ /* Initialize FlexCAN Module config struct with default value. */
+ config->clkSrc = kFLEXCAN_ClkSrcOsc;
+ config->baudRate = 125000U;
+ config->maxMbNum = 16;
+ config->enableLoopBack = false;
+ config->enableSelfWakeup = false;
+ config->enableIndividMask = false;
+#if (defined(FSL_FEATURE_FLEXCAN_HAS_DOZE_MODE_SUPPORT) && FSL_FEATURE_FLEXCAN_HAS_DOZE_MODE_SUPPORT)
+ config->enableDoze = false;
+#endif
+}
+
+void FLEXCAN_SetTimingConfig(CAN_Type *base, const flexcan_timing_config_t *config)
+{
+ /* Assertion. */
+ assert(config);
+
+ /* Enter Fraze Mode. */
+ FLEXCAN_EnterFrazeMode(base);
+
+ /* Cleaning previous Timing Setting. */
+ base->CTRL1 &= ~(CAN_CTRL1_PRESDIV_MASK | CAN_CTRL1_RJW_MASK | CAN_CTRL1_PSEG1_MASK | CAN_CTRL1_PSEG2_MASK |
+ CAN_CTRL1_PROPSEG_MASK);
+
+ /* Updating Timing Setting according to configuration structure. */
+ base->CTRL1 |=
+ (CAN_CTRL1_PRESDIV(config->preDivider) | CAN_CTRL1_RJW(config->rJumpwidth) |
+ CAN_CTRL1_PSEG1(config->phaseSeg1) | CAN_CTRL1_PSEG2(config->phaseSeg2) | CAN_CTRL1_PROPSEG(config->propSeg));
+
+ /* Exit Fraze Mode. */
+ FLEXCAN_ExitFrazeMode(base);
+}
+
+void FlEXCAN_SetRxMbGlobalMask(CAN_Type *base, uint32_t mask)
+{
+ /* Enter Fraze Mode. */
+ FLEXCAN_EnterFrazeMode(base);
+
+ /* Setting Rx Message Buffer Global Mask value. */
+ base->RXMGMASK = mask;
+ base->RX14MASK = mask;
+ base->RX15MASK = mask;
+
+ /* Exit Fraze Mode. */
+ FLEXCAN_ExitFrazeMode(base);
+}
+
+void FlEXCAN_SetRxFifoGlobalMask(CAN_Type *base, uint32_t mask)
+{
+ /* Enter Fraze Mode. */
+ FLEXCAN_EnterFrazeMode(base);
+
+ /* Setting Rx FIFO Global Mask value. */
+ base->RXFGMASK = mask;
+
+ /* Exit Fraze Mode. */
+ FLEXCAN_ExitFrazeMode(base);
+}
+
+void FlEXCAN_SetRxIndividualMask(CAN_Type *base, uint8_t maskIdx, uint32_t mask)
+{
+ assert(maskIdx <= (base->MCR & CAN_MCR_MAXMB_MASK));
+
+ /* Enter Fraze Mode. */
+ FLEXCAN_EnterFrazeMode(base);
+
+ /* Setting Rx Individual Mask value. */
+ base->RXIMR[maskIdx] = mask;
+
+ /* Exit Fraze Mode. */
+ FLEXCAN_ExitFrazeMode(base);
+}
+
+void FLEXCAN_SetTxMbConfig(CAN_Type *base, uint8_t mbIdx, bool enable)
+{
+ /* Assertion. */
+ assert(mbIdx <= (base->MCR & CAN_MCR_MAXMB_MASK));
+
+ if (FLEXCAN_IsMbOccupied(base, mbIdx))
+ {
+ assert(false);
+ }
+
+ /* Inactivate Message Buffer. */
+ if (enable)
+ {
+ base->MB[mbIdx].CS = CAN_CS_CODE(kFLEXCAN_TxMbInactive);
+ }
+ else
+ {
+ base->MB[mbIdx].CS = 0;
+ }
+
+ /* Clean Message Buffer content. */
+ base->MB[mbIdx].ID = 0x0;
+ base->MB[mbIdx].WORD0 = 0x0;
+ base->MB[mbIdx].WORD1 = 0x0;
+}
+
+void FLEXCAN_SetRxMbConfig(CAN_Type *base, uint8_t mbIdx, const flexcan_rx_mb_config_t *config, bool enable)
+{
+ /* Assertion. */
+ assert(mbIdx <= (base->MCR & CAN_MCR_MAXMB_MASK));
+ assert(((config) || (false == enable)));
+
+ uint32_t cs_temp = 0;
+
+ if (FLEXCAN_IsMbOccupied(base, mbIdx))
+ {
+ assert(false);
+ }
+
+ /* Inactivate Message Buffer. */
+ base->MB[mbIdx].CS = 0;
+
+ /* Clean Message Buffer content. */
+ base->MB[mbIdx].ID = 0x0;
+ base->MB[mbIdx].WORD0 = 0x0;
+ base->MB[mbIdx].WORD1 = 0x0;
+
+ if (enable)
+ {
+ /* Setup Message Buffer ID. */
+ base->MB[mbIdx].ID = config->id;
+
+ /* Setup Message Buffer format. */
+ if (kFLEXCAN_FrameFormatExtend == config->format)
+ {
+ cs_temp |= CAN_CS_IDE_MASK;
+ }
+
+ /* Setup Message Buffer type. */
+ if (kFLEXCAN_FrameTypeRemote == config->type)
+ {
+ cs_temp |= CAN_CS_RTR_MASK;
+ }
+
+ /* Activate Rx Message Buffer. */
+ cs_temp |= CAN_CS_CODE(kFLEXCAN_RxMbEmpty);
+ base->MB[mbIdx].CS = cs_temp;
+ }
+}
+
+void FlEXCAN_SetRxFifoConfig(CAN_Type *base, const flexcan_rx_fifo_config_t *config, bool enable)
+{
+ /* Assertion. */
+ assert((config) || (false == enable));
+
+ volatile uint32_t *idFilterRegion = (volatile uint32_t *)(&base->MB[6].CS);
+ uint8_t setup_mb, i, rffn = 0;
+
+ /* Enter Fraze Mode. */
+ FLEXCAN_EnterFrazeMode(base);
+
+ if (enable)
+ {
+ assert(config->idFilterNum <= 128);
+
+ /* Get the setup_mb value. */
+ setup_mb = (base->MCR & CAN_MCR_MAXMB_MASK) >> CAN_MCR_MAXMB_SHIFT;
+ setup_mb = (setup_mb < FSL_FEATURE_FLEXCAN_HAS_MESSAGE_BUFFER_MAX_NUMBERn(base)) ?
+ setup_mb :
+ FSL_FEATURE_FLEXCAN_HAS_MESSAGE_BUFFER_MAX_NUMBERn(base);
+
+ /* Determine RFFN value. */
+ for (i = 0; i <= 0xF; i++)
+ {
+ if ((8 * (i + 1)) >= config->idFilterNum)
+ {
+ rffn = i;
+ assert(((setup_mb - 8) - (2 * rffn)) > 0);
+
+ base->CTRL2 = (base->CTRL2 & ~CAN_CTRL2_RFFN_MASK) | CAN_CTRL2_RFFN(rffn);
+ break;
+ }
+ }
+ }
+ else
+ {
+ rffn = (base->CTRL2 & CAN_CTRL2_RFFN_MASK) >> CAN_CTRL2_RFFN_SHIFT;
+ }
+
+ /* Clean ID filter table occuyied Message Buffer Region. */
+ rffn = (rffn + 1) * 8;
+ for (i = 0; i < rffn; i++)
+ {
+ idFilterRegion[i] = 0x0;
+ }
+
+ if (enable)
+ {
+ /* Disable unused Rx FIFO Filter. */
+ for (i = config->idFilterNum; i < rffn; i++)
+ {
+ idFilterRegion[i] = 0xFFFFFFFFU;
+ }
+
+ /* Copy ID filter table to Message Buffer Region. */
+ for (i = 0; i < config->idFilterNum; i++)
+ {
+ idFilterRegion[i] = config->idFilterTable[i];
+ }
+
+ /* Setup ID Fitlter Type. */
+ switch (config->idFilterType)
+ {
+ case kFLEXCAN_RxFifoFilterTypeA:
+ base->MCR = (base->MCR & ~CAN_MCR_IDAM_MASK) | CAN_MCR_IDAM(0x0);
+ break;
+ case kFLEXCAN_RxFifoFilterTypeB:
+ base->MCR = (base->MCR & ~CAN_MCR_IDAM_MASK) | CAN_MCR_IDAM(0x1);
+ break;
+ case kFLEXCAN_RxFifoFilterTypeC:
+ base->MCR = (base->MCR & ~CAN_MCR_IDAM_MASK) | CAN_MCR_IDAM(0x2);
+ break;
+ case kFLEXCAN_RxFifoFilterTypeD:
+ /* All frames rejected. */
+ base->MCR = (base->MCR & ~CAN_MCR_IDAM_MASK) | CAN_MCR_IDAM(0x3);
+ break;
+ default:
+ break;
+ }
+
+ /* Setting Message Reception Priority. */
+ base->CTRL2 = (config->priority == kFLEXCAN_RxFifoPrioHigh) ? base->CTRL2 & ~CAN_CTRL2_MRP_MASK :
+ base->CTRL2 | CAN_CTRL2_MRP_MASK;
+
+ /* Enable Rx Message FIFO. */
+ base->MCR |= CAN_MCR_RFEN_MASK;
+ }
+ else
+ {
+ /* Disable Rx Message FIFO. */
+ base->MCR &= ~CAN_MCR_RFEN_MASK;
+
+ /* Clean MB0 ~ MB5. */
+ FLEXCAN_SetRxMbConfig(base, 0, NULL, false);
+ FLEXCAN_SetRxMbConfig(base, 1, NULL, false);
+ FLEXCAN_SetRxMbConfig(base, 2, NULL, false);
+ FLEXCAN_SetRxMbConfig(base, 3, NULL, false);
+ FLEXCAN_SetRxMbConfig(base, 4, NULL, false);
+ FLEXCAN_SetRxMbConfig(base, 5, NULL, false);
+ }
+
+ /* Exit Fraze Mode. */
+ FLEXCAN_ExitFrazeMode(base);
+}
+
+#if (defined(FSL_FEATURE_FLEXCAN_HAS_RX_FIFO_DMA) && FSL_FEATURE_FLEXCAN_HAS_RX_FIFO_DMA)
+void FLEXCAN_EnableRxFifoDMA(CAN_Type *base, bool enable)
+{
+ if (enable)
+ {
+ /* Enter Fraze Mode. */
+ FLEXCAN_EnterFrazeMode(base);
+
+ /* Enable FlexCAN DMA. */
+ base->MCR |= CAN_MCR_DMA_MASK;
+
+ /* Exit Fraze Mode. */
+ FLEXCAN_ExitFrazeMode(base);
+ }
+ else
+ {
+ /* Enter Fraze Mode. */
+ FLEXCAN_EnterFrazeMode(base);
+
+ /* Disable FlexCAN DMA. */
+ base->MCR &= ~CAN_MCR_DMA_MASK;
+
+ /* Exit Fraze Mode. */
+ FLEXCAN_ExitFrazeMode(base);
+ }
+}
+#endif /* FSL_FEATURE_FLEXCAN_HAS_RX_FIFO_DMA */
+
+status_t FLEXCAN_WriteTxMb(CAN_Type *base, uint8_t mbIdx, const flexcan_frame_t *txFrame)
+{
+ /* Assertion. */
+ assert(mbIdx <= (base->MCR & CAN_MCR_MAXMB_MASK));
+ assert(txFrame);
+ assert(txFrame->length <= 8);
+
+ uint32_t cs_temp = 0;
+
+ if (FLEXCAN_IsMbOccupied(base, mbIdx))
+ {
+ assert(false);
+ }
+
+ /* Check if Message Buffer is available. */
+ if (CAN_CS_CODE(kFLEXCAN_TxMbDataOrRemote) != (base->MB[mbIdx].CS & CAN_CS_CODE_MASK))
+ {
+ /* Inactive Tx Message Buffer. */
+ base->MB[mbIdx].CS = (base->MB[mbIdx].CS & ~CAN_CS_CODE_MASK) | CAN_CS_CODE(kFLEXCAN_TxMbInactive);
+
+ /* Fill Message ID field. */
+ base->MB[mbIdx].ID = txFrame->id;
+
+ /* Fill Message Format field. */
+ if (kFLEXCAN_FrameFormatExtend == txFrame->format)
+ {
+ cs_temp |= CAN_CS_SRR_MASK | CAN_CS_IDE_MASK;
+ }
+
+ /* Fill Message Type field. */
+ if (kFLEXCAN_FrameTypeRemote == txFrame->type)
+ {
+ cs_temp |= CAN_CS_RTR_MASK;
+ }
+
+ cs_temp |= CAN_CS_CODE(kFLEXCAN_TxMbDataOrRemote) | CAN_CS_DLC(txFrame->length);
+
+ /* Load Message Payload. */
+ base->MB[mbIdx].WORD0 = txFrame->dataWord0;
+ base->MB[mbIdx].WORD1 = txFrame->dataWord1;
+
+ /* Activate Tx Message Buffer. */
+ base->MB[mbIdx].CS = cs_temp;
+
+ return kStatus_Success;
+ }
+ else
+ {
+ /* Tx Message Buffer is activated, return immediately. */
+ return kStatus_Fail;
+ }
+}
+
+status_t FLEXCAN_ReadRxMb(CAN_Type *base, uint8_t mbIdx, flexcan_frame_t *rxFrame)
+{
+ /* Assertion. */
+ assert(mbIdx <= (base->MCR & CAN_MCR_MAXMB_MASK));
+ assert(rxFrame);
+
+ uint32_t cs_temp;
+ uint8_t rx_code;
+
+ if (FLEXCAN_IsMbOccupied(base, mbIdx))
+ {
+ assert(false);
+ }
+
+ /* Read CS field of Rx Message Buffer to lock Message Buffer. */
+ cs_temp = base->MB[mbIdx].CS;
+ /* Get Rx Message Buffer Code field. */
+ rx_code = (cs_temp & CAN_CS_CODE_MASK) >> CAN_CS_CODE_SHIFT;
+
+ /* Check to see if Rx Message Buffer is full. */
+ if ((kFLEXCAN_RxMbFull == rx_code) || (kFLEXCAN_RxMbOverrun == rx_code))
+ {
+ /* Store Message ID. */
+ rxFrame->id = base->MB[mbIdx].ID & (CAN_ID_EXT_MASK | CAN_ID_STD_MASK);
+
+ /* Get the message ID and format. */
+ rxFrame->format = (cs_temp & CAN_CS_IDE_MASK) ? kFLEXCAN_FrameFormatExtend : kFLEXCAN_FrameFormatStandard;
+
+ /* Get the message type. */
+ rxFrame->type = (cs_temp & CAN_CS_RTR_MASK) ? kFLEXCAN_FrameTypeRemote : kFLEXCAN_FrameTypeData;
+
+ /* Get the message length. */
+ rxFrame->length = (cs_temp & CAN_CS_DLC_MASK) >> CAN_CS_DLC_SHIFT;
+
+ /* Store Message Payload. */
+ rxFrame->dataWord0 = base->MB[mbIdx].WORD0;
+ rxFrame->dataWord1 = base->MB[mbIdx].WORD1;
+
+ /* Read free-running timer to unlock Rx Message Buffer. */
+ (void)base->TIMER;
+
+ if (kFLEXCAN_RxMbFull == rx_code)
+ {
+ return kStatus_Success;
+ }
+ else
+ {
+ return kStatus_FLEXCAN_RxOverflow;
+ }
+ }
+ else
+ {
+ /* Read free-running timer to unlock Rx Message Buffer. */
+ (void)base->TIMER;
+
+ return kStatus_Fail;
+ }
+}
+
+status_t FlEXCAN_ReadRxFifo(CAN_Type *base, flexcan_frame_t *rxFrame)
+{
+ /* Assertion. */
+ assert(rxFrame);
+
+ uint32_t cs_temp;
+
+ /* Check if Rx FIFO is Enabled. */
+ if (base->MCR & CAN_MCR_RFEN_MASK)
+ {
+ /* Read CS field of Rx Message Buffer to lock Message Buffer. */
+ cs_temp = base->MB[0].CS;
+
+ /* Read data from Rx FIFO output port. */
+ /* Store Message ID. */
+ rxFrame->id = base->MB[0].ID & (CAN_ID_EXT_MASK | CAN_ID_STD_MASK);
+
+ /* Get the message ID and format. */
+ rxFrame->format = (cs_temp & CAN_CS_IDE_MASK) ? kFLEXCAN_FrameFormatExtend : kFLEXCAN_FrameFormatStandard;
+
+ /* Get the message type. */
+ rxFrame->type = (cs_temp & CAN_CS_RTR_MASK) ? kFLEXCAN_FrameTypeRemote : kFLEXCAN_FrameTypeData;
+
+ /* Get the message length. */
+ rxFrame->length = (cs_temp & CAN_CS_DLC_MASK) >> CAN_CS_DLC_SHIFT;
+
+ /* Store Message Payload. */
+ rxFrame->dataWord0 = base->MB[0].WORD0;
+ rxFrame->dataWord1 = base->MB[0].WORD1;
+
+ /* Store ID Filter Hit Index. */
+ rxFrame->idhit = (uint8_t)(base->RXFIR & CAN_RXFIR_IDHIT_MASK);
+
+ /* Read free-running timer to unlock Rx Message Buffer. */
+ (void)base->TIMER;
+
+ return kStatus_Success;
+ }
+ else
+ {
+ return kStatus_Fail;
+ }
+}
+
+status_t FlEXCAN_TransferSendBlocking(CAN_Type *base, uint8_t mbIdx, flexcan_frame_t *txFrame)
+{
+ /* Write Tx Message Buffer to initiate a data sending. */
+ if (kStatus_Success == FLEXCAN_WriteTxMb(base, mbIdx, txFrame))
+ {
+ /* Wait until CAN Message send out. */
+ while (!FLEXCAN_GetMbStatusFlags(base, 1 << mbIdx))
+ {
+ }
+
+ /* Clean Tx Message Buffer Flag. */
+ FLEXCAN_ClearMbStatusFlags(base, 1 << mbIdx);
+
+ return kStatus_Success;
+ }
+ else
+ {
+ return kStatus_Fail;
+ }
+}
+
+status_t FlEXCAN_TransferReceiveBlocking(CAN_Type *base, uint8_t mbIdx, flexcan_frame_t *rxFrame)
+{
+ /* Wait until Rx Message Buffer non-empty. */
+ while (!FLEXCAN_GetMbStatusFlags(base, 1 << mbIdx))
+ {
+ }
+
+ /* Clean Rx Message Buffer Flag. */
+ FLEXCAN_ClearMbStatusFlags(base, 1 << mbIdx);
+
+ /* Read Received CAN Message. */
+ return FLEXCAN_ReadRxMb(base, mbIdx, rxFrame);
+}
+
+status_t FlEXCAN_TransferReceiveFifoBlocking(CAN_Type *base, flexcan_frame_t *rxFrame)
+{
+ status_t rxFifoStatus;
+
+ /* Wait until Rx FIFO non-empty. */
+ while (!FLEXCAN_GetMbStatusFlags(base, kFLEXCAN_RxFifoFrameAvlFlag))
+ {
+ }
+
+ /* */
+ rxFifoStatus = FlEXCAN_ReadRxFifo(base, rxFrame);
+
+ /* Clean Rx Fifo available flag. */
+ FLEXCAN_ClearMbStatusFlags(base, kFLEXCAN_RxFifoFrameAvlFlag);
+
+ return rxFifoStatus;
+}
+
+void FLEXCAN_TransferCreateHandle(CAN_Type *base,
+ flexcan_handle_t *handle,
+ flexcan_transfer_callback_t callback,
+ void *userData)
+{
+ assert(handle);
+
+ uint8_t instance;
+
+ /* Clean FlexCAN transfer handle. */
+ memset(handle, 0, sizeof(*handle));
+
+ /* Get instance from peripheral base address. */
+ instance = FLEXCAN_GetInstance(base);
+
+ /* Save the context in global variables to support the double weak mechanism. */
+ s_flexcanHandle[instance] = handle;
+
+ /* Register Callback function. */
+ handle->callback = callback;
+ handle->userData = userData;
+
+ /* We Enable Error & Status interrupt here, because this interrupt just
+ * report current status of FlexCAN module through Callback function.
+ * It is insignificance without a available callback function.
+ */
+ if (handle->callback != NULL)
+ {
+ FLEXCAN_EnableInterrupts(base, kFLEXCAN_BusOffInterruptEnable | kFLEXCAN_ErrorInterruptEnable |
+ kFLEXCAN_RxWarningInterruptEnable | kFLEXCAN_TxWarningInterruptEnable |
+ kFLEXCAN_WakeUpInterruptEnable);
+ }
+ else
+ {
+ FLEXCAN_DisableInterrupts(base, kFLEXCAN_BusOffInterruptEnable | kFLEXCAN_ErrorInterruptEnable |
+ kFLEXCAN_RxWarningInterruptEnable | kFLEXCAN_TxWarningInterruptEnable |
+ kFLEXCAN_WakeUpInterruptEnable);
+ }
+
+ /* Enable interrupts in NVIC. */
+ EnableIRQ((IRQn_Type)(s_flexcanRxWarningIRQ[instance]));
+ EnableIRQ((IRQn_Type)(s_flexcanTxWarningIRQ[instance]));
+ EnableIRQ((IRQn_Type)(s_flexcanWakeUpIRQ[instance]));
+ EnableIRQ((IRQn_Type)(s_flexcanErrorIRQ[instance]));
+ EnableIRQ((IRQn_Type)(s_flexcanBusOffIRQ[instance]));
+ EnableIRQ((IRQn_Type)(s_flexcanMbIRQ[instance]));
+}
+
+status_t FLEXCAN_TransferSendNonBlocking(CAN_Type *base, flexcan_handle_t *handle, flexcan_mb_transfer_t *xfer)
+{
+ /* Assertion. */
+ assert(handle);
+ assert(xfer);
+ assert(xfer->mbIdx <= (base->MCR & CAN_MCR_MAXMB_MASK));
+
+ if (FLEXCAN_IsMbOccupied(base, xfer->mbIdx))
+ {
+ assert(false);
+ }
+
+ /* Check if Message Buffer is idle. */
+ if (kFLEXCAN_StateIdle == handle->mbState[xfer->mbIdx])
+ {
+ /* Distinguish transmit type. */
+ if (kFLEXCAN_FrameTypeRemote == xfer->frame->type)
+ {
+ handle->mbState[xfer->mbIdx] = kFLEXCAN_StateTxRemote;
+
+ /* Register user Frame buffer to receive remote Frame. */
+ handle->mbFrameBuf[xfer->mbIdx] = xfer->frame;
+ }
+ else
+ {
+ handle->mbState[xfer->mbIdx] = kFLEXCAN_StateTxData;
+ }
+
+ if (kStatus_Success == FLEXCAN_WriteTxMb(base, xfer->mbIdx, xfer->frame))
+ {
+ /* Enable Message Buffer Interrupt. */
+ FLEXCAN_EnableMbInterrupts(base, 1 << xfer->mbIdx);
+
+ return kStatus_Success;
+ }
+ else
+ {
+ handle->mbState[xfer->mbIdx] = kFLEXCAN_StateIdle;
+ return kStatus_Fail;
+ }
+ }
+ else
+ {
+ return kStatus_FLEXCAN_TxBusy;
+ }
+}
+
+status_t FLEXCAN_TransferReceiveNonBlocking(CAN_Type *base, flexcan_handle_t *handle, flexcan_mb_transfer_t *xfer)
+{
+ /* Assertion. */
+ assert(handle);
+ assert(xfer);
+ assert(xfer->mbIdx <= (base->MCR & CAN_MCR_MAXMB_MASK));
+
+ if (FLEXCAN_IsMbOccupied(base, xfer->mbIdx))
+ {
+ assert(false);
+ }
+
+ /* Check if Message Buffer is idle. */
+ if (kFLEXCAN_StateIdle == handle->mbState[xfer->mbIdx])
+ {
+ handle->mbState[xfer->mbIdx] = kFLEXCAN_StateRxData;
+
+ /* Register Message Buffer. */
+ handle->mbFrameBuf[xfer->mbIdx] = xfer->frame;
+
+ /* Enable Message Buffer Interrupt. */
+ FLEXCAN_EnableMbInterrupts(base, 1 << xfer->mbIdx);
+
+ return kStatus_Success;
+ }
+ else
+ {
+ return kStatus_FLEXCAN_RxBusy;
+ }
+}
+
+status_t FLEXCAN_TransferReceiveFifoNonBlocking(CAN_Type *base, flexcan_handle_t *handle, flexcan_fifo_transfer_t *xfer)
+{
+ /* Assertion. */
+ assert(handle);
+ assert(xfer);
+
+ /* Check if Message Buffer is idle. */
+ if (kFLEXCAN_StateIdle == handle->rxFifoState)
+ {
+ handle->rxFifoState = kFLEXCAN_StateRxFifo;
+
+ /* Register Message Buffer. */
+ handle->rxFifoFrameBuf = xfer->frame;
+
+ /* Enable Message Buffer Interrupt. */
+ FLEXCAN_EnableMbInterrupts(
+ base, kFLEXCAN_RxFifoOverflowFlag | kFLEXCAN_RxFifoWarningFlag | kFLEXCAN_RxFifoFrameAvlFlag);
+
+ return kStatus_Success;
+ }
+ else
+ {
+ return kStatus_FLEXCAN_RxFifoBusy;
+ }
+}
+
+void FLEXCAN_TransferAbortSend(CAN_Type *base, flexcan_handle_t *handle, uint8_t mbIdx)
+{
+ /* Assertion. */
+ assert(handle);
+ assert(mbIdx <= (base->MCR & CAN_MCR_MAXMB_MASK));
+
+ if (FLEXCAN_IsMbOccupied(base, mbIdx))
+ {
+ assert(false);
+ }
+
+ /* Disable Message Buffer Interrupt. */
+ FLEXCAN_DisableMbInterrupts(base, 1 << mbIdx);
+
+ /* Un-register handle. */
+ handle->mbFrameBuf[mbIdx] = 0x0;
+
+ /* Clean Message Buffer. */
+ FLEXCAN_SetTxMbConfig(base, mbIdx, true);
+
+ handle->mbState[mbIdx] = kFLEXCAN_StateIdle;
+}
+
+void FLEXCAN_TransferAbortReceive(CAN_Type *base, flexcan_handle_t *handle, uint8_t mbIdx)
+{
+ /* Assertion. */
+ assert(handle);
+ assert(mbIdx <= (base->MCR & CAN_MCR_MAXMB_MASK));
+
+ if (FLEXCAN_IsMbOccupied(base, mbIdx))
+ {
+ assert(false);
+ }
+
+ /* Disable Message Buffer Interrupt. */
+ FLEXCAN_DisableMbInterrupts(base, 1 << mbIdx);
+
+ /* Un-register handle. */
+ handle->mbFrameBuf[mbIdx] = 0x0;
+ handle->mbState[mbIdx] = kFLEXCAN_StateIdle;
+}
+
+void FLEXCAN_TransferAbortReceiveFifo(CAN_Type *base, flexcan_handle_t *handle)
+{
+ /* Assertion. */
+ assert(handle);
+
+ /* Check if Rx FIFO is enabled. */
+ if (base->MCR & CAN_MCR_RFEN_MASK)
+ {
+ /* Disable Rx Message FIFO Interrupts. */
+ FLEXCAN_DisableMbInterrupts(
+ base, kFLEXCAN_RxFifoOverflowFlag | kFLEXCAN_RxFifoWarningFlag | kFLEXCAN_RxFifoFrameAvlFlag);
+
+ /* Un-register handle. */
+ handle->rxFifoFrameBuf = 0x0;
+ }
+
+ handle->rxFifoState = kFLEXCAN_StateIdle;
+}
+
+void FLEXCAN_TransferHandleIRQ(CAN_Type *base, flexcan_handle_t *handle)
+{
+ /* Assertion. */
+ assert(handle);
+
+ status_t status = kStatus_FLEXCAN_UnHandled;
+ uint32_t result;
+
+ /* Store Current FlexCAN Module Error and Status. */
+ result = base->ESR1;
+
+ do
+ {
+ /* Solve FlexCAN Error and Status Interrupt. */
+ if (result & (kFLEXCAN_TxWarningIntFlag | kFLEXCAN_RxWarningIntFlag | kFLEXCAN_BusOffIntFlag |
+ kFLEXCAN_ErrorIntFlag | kFLEXCAN_WakeUpIntFlag))
+ {
+ status = kStatus_FLEXCAN_ErrorStatus;
+
+ /* Clear FlexCAN Error and Status Interrupt. */
+ FLEXCAN_ClearStatusFlags(base, kFLEXCAN_TxWarningIntFlag | kFLEXCAN_RxWarningIntFlag |
+ kFLEXCAN_BusOffIntFlag | kFLEXCAN_ErrorIntFlag | kFLEXCAN_WakeUpIntFlag);
+ }
+ /* Solve FlexCAN Rx FIFO & Message Buffer Interrupt. */
+ else
+ {
+ /* For this implementation, we solve the Message with lowest MB index first. */
+ for (result = 0; result < FSL_FEATURE_FLEXCAN_HAS_MESSAGE_BUFFER_MAX_NUMBERn(base); result++)
+ {
+ /* Get the lowest unhandled Message Buffer */
+ if ((FLEXCAN_GetMbStatusFlags(base, 1 << result)) && (FLEXCAN_IsMbIntEnabled(base, result)))
+ {
+ break;
+ }
+ }
+
+ /* Does not find Message to deal with. */
+ if (result == FSL_FEATURE_FLEXCAN_HAS_MESSAGE_BUFFER_MAX_NUMBERn(base))
+ {
+ break;
+ }
+
+ /* Solve Rx FIFO interrupt. */
+ if ((kFLEXCAN_StateIdle != handle->rxFifoState) && ((1 << result) <= kFLEXCAN_RxFifoOverflowFlag))
+ {
+ switch (1 << result)
+ {
+ case kFLEXCAN_RxFifoOverflowFlag:
+ status = kStatus_FLEXCAN_RxFifoOverflow;
+ break;
+
+ case kFLEXCAN_RxFifoWarningFlag:
+ status = kStatus_FLEXCAN_RxFifoWarning;
+ break;
+
+ case kFLEXCAN_RxFifoFrameAvlFlag:
+ status = FlEXCAN_ReadRxFifo(base, handle->rxFifoFrameBuf);
+ if (kStatus_Success == status)
+ {
+ status = kStatus_FLEXCAN_RxFifoIdle;
+ }
+ FLEXCAN_TransferAbortReceiveFifo(base, handle);
+ break;
+
+ default:
+ status = kStatus_FLEXCAN_UnHandled;
+ break;
+ }
+ }
+ else
+ {
+ /* Get current State of Message Buffer. */
+ switch (handle->mbState[result])
+ {
+ /* Solve Rx Data Frame. */
+ case kFLEXCAN_StateRxData:
+ status = FLEXCAN_ReadRxMb(base, result, handle->mbFrameBuf[result]);
+ if (kStatus_Success == status)
+ {
+ status = kStatus_FLEXCAN_RxIdle;
+ }
+ FLEXCAN_TransferAbortReceive(base, handle, result);
+ break;
+
+ /* Solve Rx Remote Frame. */
+ case kFLEXCAN_StateRxRemote:
+ status = FLEXCAN_ReadRxMb(base, result, handle->mbFrameBuf[result]);
+ if (kStatus_Success == status)
+ {
+ status = kStatus_FLEXCAN_RxIdle;
+ }
+ FLEXCAN_TransferAbortReceive(base, handle, result);
+ break;
+
+ /* Solve Tx Data Frame. */
+ case kFLEXCAN_StateTxData:
+ status = kStatus_FLEXCAN_TxIdle;
+ FLEXCAN_TransferAbortSend(base, handle, result);
+ break;
+
+ /* Solve Tx Remote Frame. */
+ case kFLEXCAN_StateTxRemote:
+ handle->mbState[result] = kFLEXCAN_StateRxRemote;
+ status = kStatus_FLEXCAN_TxSwitchToRx;
+ break;
+
+ default:
+ status = kStatus_FLEXCAN_UnHandled;
+ break;
+ }
+ }
+
+ /* Clear resolved Message Buffer IRQ. */
+ FLEXCAN_ClearMbStatusFlags(base, 1 << result);
+ }
+
+ /* Calling Callback Function if has one. */
+ if (handle->callback != NULL)
+ {
+ handle->callback(base, handle, status, result, handle->userData);
+ }
+
+ /* Reset return status */
+ status = kStatus_FLEXCAN_UnHandled;
+
+ /* Store Current FlexCAN Module Error and Status. */
+ result = base->ESR1;
+ }
+#if (defined(FSL_FEATURE_FLEXCAN_HAS_EXTENDED_FLAG_REGISTER)) && (FSL_FEATURE_FLEXCAN_HAS_EXTENDED_FLAG_REGISTER > 0)
+ while ((0 != FLEXCAN_GetMbStatusFlags(base, 0xFFFFFFFFFFFFFFFFU)) ||
+ (0 != (result & (kFLEXCAN_TxWarningIntFlag | kFLEXCAN_RxWarningIntFlag | kFLEXCAN_BusOffIntFlag |
+ kFLEXCAN_ErrorIntFlag | kFLEXCAN_WakeUpIntFlag))));
+#else
+ while ((0 != FLEXCAN_GetMbStatusFlags(base, 0xFFFFFFFFU)) ||
+ (0 != (result & (kFLEXCAN_TxWarningIntFlag | kFLEXCAN_RxWarningIntFlag | kFLEXCAN_BusOffIntFlag |
+ kFLEXCAN_ErrorIntFlag | kFLEXCAN_WakeUpIntFlag))));
+#endif
+}
+
+#if (FSL_FEATURE_SOC_FLEXCAN_COUNT > 0)
+void CAN0_DriverIRQHandler(void)
+{
+ assert(s_flexcanHandle[0]);
+
+ FLEXCAN_TransferHandleIRQ(CAN0, s_flexcanHandle[0]);
+}
+#endif
+
+#if (FSL_FEATURE_SOC_FLEXCAN_COUNT > 1)
+void CAN1_DriverIRQHandler(void)
+{
+ assert(s_flexcanHandle[1]);
+
+ FLEXCAN_TransferHandleIRQ(CAN1, s_flexcanHandle[1]);
+}
+#endif
+
+#if (FSL_FEATURE_SOC_FLEXCAN_COUNT > 2)
+void CAN2_DriverIRQHandler(void)
+{
+ assert(s_flexcanHandle[2]);
+
+ FLEXCAN_TransferHandleIRQ(CAN2, s_flexcanHandle[2]);
+}
+#endif
+
+#if (FSL_FEATURE_SOC_FLEXCAN_COUNT > 3)
+void CAN3_DriverIRQHandler(void)
+{
+ assert(s_flexcanHandle[3]);
+
+ FLEXCAN_TransferHandleIRQ(CAN3, s_flexcanHandle[3]);
+}
+#endif
+
+#if (FSL_FEATURE_SOC_FLEXCAN_COUNT > 4)
+void CAN4_DriverIRQHandler(void)
+{
+ assert(s_flexcanHandle[4]);
+
+ FLEXCAN_TransferHandleIRQ(CAN4, s_flexcanHandle[4]);
+}
+#endif
http://git-wip-us.apache.org/repos/asf/incubator-mynewt-core/blob/f8f2ebbf/hw/mcu/nxp/src/ext/sdk-2.0-frdm-k64f_b160321/devices/MK64F12/drivers/fsl_flexcan.h
----------------------------------------------------------------------
diff --git a/hw/mcu/nxp/src/ext/sdk-2.0-frdm-k64f_b160321/devices/MK64F12/drivers/fsl_flexcan.h b/hw/mcu/nxp/src/ext/sdk-2.0-frdm-k64f_b160321/devices/MK64F12/drivers/fsl_flexcan.h
new file mode 100644
index 0000000..b0dee77
--- /dev/null
+++ b/hw/mcu/nxp/src/ext/sdk-2.0-frdm-k64f_b160321/devices/MK64F12/drivers/fsl_flexcan.h
@@ -0,0 +1,1053 @@
+/*
+ * Copyright (c) 2015, Freescale Semiconductor, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted 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 Freescale Semiconductor, Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * 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.
+ */
+#ifndef _FSL_FLEXCAN_H_
+#define _FSL_FLEXCAN_H_
+
+#include "fsl_common.h"
+
+/*!
+ * @addtogroup flexcan_driver
+ * @{
+ */
+
+/*! @file*/
+
+/******************************************************************************
+ * Definitions
+ *****************************************************************************/
+
+/*! @name Driver version */
+/*@{*/
+/*! @brief FlexCAN driver version 2.1.0. */
+#define FLEXCAN_DRIVER_VERSION (MAKE_VERSION(2, 1, 0))
+/*@}*/
+
+/*! @brief FlexCAN Frame ID helper macro. */
+#define FLEXCAN_ID_STD(id) \
+ (((uint32_t)(((uint32_t)(id)) << CAN_ID_STD_SHIFT)) & CAN_ID_STD_MASK) /*!< Standard Frame ID helper macro. */
+#define FLEXCAN_ID_EXT(id) \
+ (((uint32_t)(((uint32_t)(id)) << CAN_ID_EXT_SHIFT)) & \
+ (CAN_ID_EXT_MASK | CAN_ID_STD_MASK)) /*!< Extend Frame ID helper macro. */
+
+/*! @brief FlexCAN Rx Message Buffer Mask helper macro. */
+#define FLEXCAN_RX_MB_STD_MASK(id, rtr, ide) \
+ (((uint32_t)((uint32_t)(rtr) << 31) | (uint32_t)((uint32_t)(ide) << 30)) | \
+ FLEXCAN_ID_STD(id)) /*!< Standard Rx Message Buffer Mask helper macro. */
+#define FLEXCAN_RX_MB_EXT_MASK(id, rtr, ide) \
+ (((uint32_t)((uint32_t)(rtr) << 31) | (uint32_t)((uint32_t)(ide) << 30)) | \
+ FLEXCAN_ID_EXT(id)) /*!< Extend Rx Message Buffer Mask helper macro. */
+
+/*! @brief FlexCAN Rx FIFO Mask helper macro. */
+#define FLEXCAN_RX_FIFO_STD_MASK_TYPE_A(id, rtr, ide) \
+ (((uint32_t)((uint32_t)(rtr) << 31) | (uint32_t)((uint32_t)(ide) << 30)) | \
+ (FLEXCAN_ID_STD(id) << 1)) /*!< Standard Rx FIFO Mask helper macro Type A helper macro. */
+#define FLEXCAN_RX_FIFO_STD_MASK_TYPE_B_HIGH(id, rtr, ide) \
+ (((uint32_t)((uint32_t)(rtr) << 31) | (uint32_t)((uint32_t)(ide) << 30)) | \
+ (FLEXCAN_ID_STD(id) << 16)) /*!< Standard Rx FIFO Mask helper macro Type B upper part helper macro. */
+#define FLEXCAN_RX_FIFO_STD_MASK_TYPE_B_LOW(id, rtr, ide) \
+ (((uint32_t)((uint32_t)(rtr) << 15) | (uint32_t)((uint32_t)(ide) << 14)) | \
+ FLEXCAN_ID_STD(id)) /*!< Standard Rx FIFO Mask helper macro Type B lower part helper macro. */
+#define FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_HIGH(id) \
+ ((FLEXCAN_ID_STD(id) & 0x7F8) << 21) /*!< Standard Rx FIFO Mask helper macro Type C upper part helper macro. */
+#define FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_MID_HIGH(id) \
+ ((FLEXCAN_ID_STD(id) & 0x7F8) << 13) /*!< Standard Rx FIFO Mask helper macro Type C mid-upper part helper macro. \
+ */
+#define FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_MID_LOW(id) \
+ ((FLEXCAN_ID_STD(id) & 0x7F8) << 5) /*!< Standard Rx FIFO Mask helper macro Type C mid-lower part helper macro. */
+#define FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_LOW(id) \
+ ((FLEXCAN_ID_STD(id) & 0x7F8) >> 3) /*!< Standard Rx FIFO Mask helper macro Type C lower part helper macro. */
+#define FLEXCAN_RX_FIFO_EXT_MASK_TYPE_A(id, rtr, ide) \
+ (((uint32_t)((uint32_t)(rtr) << 31) | (uint32_t)((uint32_t)(ide) << 30)) | \
+ (FLEXCAN_ID_EXT(id) << 1)) /*!< Extend Rx FIFO Mask helper macro Type A helper macro. */
+#define FLEXCAN_RX_FIFO_EXT_MASK_TYPE_B_HIGH(id, rtr, ide) \
+ ( \
+ ((uint32_t)((uint32_t)(rtr) << 31) | (uint32_t)((uint32_t)(ide) << 30)) | \
+ ((FLEXCAN_ID_EXT(id) & 0x1FFF8000) \
+ << 1)) /*!< Extend Rx FIFO Mask helper macro Type B upper part helper macro. */
+#define FLEXCAN_RX_FIFO_EXT_MASK_TYPE_B_LOW(id, rtr, ide) \
+ (((uint32_t)((uint32_t)(rtr) << 15) | (uint32_t)((uint32_t)(ide) << 14)) | \
+ ((FLEXCAN_ID_EXT(id) & 0x1FFF8000) >> \
+ 15)) /*!< Extend Rx FIFO Mask helper macro Type B lower part helper macro. */
+#define FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_HIGH(id) \
+ ((FLEXCAN_ID_EXT(id) & 0x1FE00000) << 3) /*!< Extend Rx FIFO Mask helper macro Type C upper part helper macro. */
+#define FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_MID_HIGH(id) \
+ ((FLEXCAN_ID_EXT(id) & 0x1FE00000) >> \
+ 5) /*!< Extend Rx FIFO Mask helper macro Type C mid-upper part helper macro. */
+#define FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_MID_LOW(id) \
+ ((FLEXCAN_ID_EXT(id) & 0x1FE00000) >> \
+ 13) /*!< Extend Rx FIFO Mask helper macro Type C mid-lower part helper macro. */
+#define FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_LOW(id) \
+ ((FLEXCAN_ID_EXT(id) & 0x1FE00000) >> 21) /*!< Extend Rx FIFO Mask helper macro Type C lower part helper macro. */
+
+/*! @brief FlexCAN Rx FIFO Filter helper macro. */
+#define FLEXCAN_RX_FIFO_STD_FILTER_TYPE_A(id, rtr, ide) \
+ FLEXCAN_RX_FIFO_STD_MASK_TYPE_A(id, rtr, ide) /*!< Standard Rx FIFO Filter helper macro Type A helper macro. */
+#define FLEXCAN_RX_FIFO_STD_FILTER_TYPE_B_HIGH(id, rtr, ide) \
+ FLEXCAN_RX_FIFO_STD_MASK_TYPE_B_HIGH( \
+ id, rtr, ide) /*!< Standard Rx FIFO Filter helper macro Type B upper part helper macro. */
+#define FLEXCAN_RX_FIFO_STD_FILTER_TYPE_B_LOW(id, rtr, ide) \
+ FLEXCAN_RX_FIFO_STD_MASK_TYPE_B_LOW( \
+ id, rtr, ide) /*!< Standard Rx FIFO Filter helper macro Type B lower part helper macro. */
+#define FLEXCAN_RX_FIFO_STD_FILTER_TYPE_C_HIGH(id) \
+ FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_HIGH( \
+ id) /*!< Standard Rx FIFO Filter helper macro Type C upper part helper macro. */
+#define FLEXCAN_RX_FIFO_STD_FILTER_TYPE_C_MID_HIGH(id) \
+ FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_MID_HIGH( \
+ id) /*!< Standard Rx FIFO Filter helper macro Type C mid-upper part helper macro. */
+#define FLEXCAN_RX_FIFO_STD_FILTER_TYPE_C_MID_LOW(id) \
+ FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_MID_LOW( \
+ id) /*!< Standard Rx FIFO Filter helper macro Type C mid-lower part helper macro. */
+#define FLEXCAN_RX_FIFO_STD_FILTER_TYPE_C_LOW(id) \
+ FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_LOW(id) /*!< Standard Rx FIFO Filter helper macro Type C lower part helper macro. \
+ */
+#define FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_A(id, rtr, ide) \
+ FLEXCAN_RX_FIFO_EXT_MASK_TYPE_A(id, rtr, ide) /*!< Extend Rx FIFO Filter helper macro Type A helper macro. */
+#define FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_B_HIGH(id, rtr, ide) \
+ FLEXCAN_RX_FIFO_EXT_MASK_TYPE_B_HIGH( \
+ id, rtr, ide) /*!< Extend Rx FIFO Filter helper macro Type B upper part helper macro. */
+#define FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_B_LOW(id, rtr, ide) \
+ FLEXCAN_RX_FIFO_EXT_MASK_TYPE_B_LOW( \
+ id, rtr, ide) /*!< Extend Rx FIFO Filter helper macro Type B lower part helper macro. */
+#define FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_C_HIGH(id) \
+ FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_HIGH(id) /*!< Extend Rx FIFO Filter helper macro Type C upper part helper macro. \
+ */
+#define FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_C_MID_HIGH(id) \
+ FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_MID_HIGH( \
+ id) /*!< Extend Rx FIFO Filter helper macro Type C mid-upper part helper macro. */
+#define FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_C_MID_LOW(id) \
+ FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_MID_LOW( \
+ id) /*!< Extend Rx FIFO Filter helper macro Type C mid-lower part helper macro. */
+#define FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_C_LOW(id) \
+ FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_LOW(id) /*!< Extend Rx FIFO Filter helper macro Type C lower part helper macro. */
+
+/*! @brief FlexCAN transfer status. */
+enum _flexcan_status
+{
+ kStatus_FLEXCAN_TxBusy = MAKE_STATUS(kStatusGroup_FLEXCAN, 0), /*!< Tx Message Buffer is Busy. */
+ kStatus_FLEXCAN_TxIdle = MAKE_STATUS(kStatusGroup_FLEXCAN, 1), /*!< Tx Message Buffer is Idle. */
+ kStatus_FLEXCAN_TxSwitchToRx = MAKE_STATUS(
+ kStatusGroup_FLEXCAN, 2), /*!< Remote Message is send out and Message buffer changed to Receive one. */
+ kStatus_FLEXCAN_RxBusy = MAKE_STATUS(kStatusGroup_FLEXCAN, 3), /*!< Rx Message Buffer is Busy. */
+ kStatus_FLEXCAN_RxIdle = MAKE_STATUS(kStatusGroup_FLEXCAN, 4), /*!< Rx Message Buffer is Idle. */
+ kStatus_FLEXCAN_RxOverflow = MAKE_STATUS(kStatusGroup_FLEXCAN, 5), /*!< Rx Message Buffer is Overflowed. */
+ kStatus_FLEXCAN_RxFifoBusy = MAKE_STATUS(kStatusGroup_FLEXCAN, 6), /*!< Rx Message FIFO is Busy. */
+ kStatus_FLEXCAN_RxFifoIdle = MAKE_STATUS(kStatusGroup_FLEXCAN, 7), /*!< Rx Message FIFO is Idle. */
+ kStatus_FLEXCAN_RxFifoOverflow = MAKE_STATUS(kStatusGroup_FLEXCAN, 8), /*!< Rx Message FIFO is overflowed. */
+ kStatus_FLEXCAN_RxFifoWarning = MAKE_STATUS(kStatusGroup_FLEXCAN, 0), /*!< Rx Message FIFO is almost overflowed. */
+ kStatus_FLEXCAN_ErrorStatus = MAKE_STATUS(kStatusGroup_FLEXCAN, 10), /*!< FlexCAN Module Error and Status. */
+ kStatus_FLEXCAN_UnHandled = MAKE_STATUS(kStatusGroup_FLEXCAN, 11), /*!< UnHadled Interrupt asserted. */
+};
+
+/*! @brief FlexCAN frame format. */
+typedef enum _flexcan_frame_format
+{
+ kFLEXCAN_FrameFormatStandard = 0x0U, /*!< Standard frame format attribute. */
+ kFLEXCAN_FrameFormatExtend = 0x1U, /*!< Extend frame format attribute. */
+} flexcan_frame_format_t;
+
+/*! @brief FlexCAN frame type. */
+typedef enum _flexcan_frame_type
+{
+ kFLEXCAN_FrameTypeData = 0x0U, /*!< Data frame type attribute. */
+ kFLEXCAN_FrameTypeRemote = 0x1U, /*!< Remote frame type attribute. */
+} flexcan_frame_type_t;
+
+/*! @brief FlexCAN clock source. */
+typedef enum _flexcan_clock_source
+{
+ kFLEXCAN_ClkSrcOsc = 0x0U, /*!< FlexCAN Protocol Engine clock from Oscillator. */
+ kFLEXCAN_ClkSrcPeri = 0x1U, /*!< FlexCAN Protocol Engine clock from Peripheral Clock. */
+} flexcan_clock_source_t;
+
+/*! @brief FlexCAN Rx Fifo Filter type. */
+typedef enum _flexcan_rx_fifo_filter_type
+{
+ kFLEXCAN_RxFifoFilterTypeA = 0x0U, /*!< One full ID (standard and extended) per ID Filter element. */
+ kFLEXCAN_RxFifoFilterTypeB =
+ 0x1U, /*!< Two full standard IDs or two partial 14-bit ID slices per ID Filter Table element. */
+ kFLEXCAN_RxFifoFilterTypeC =
+ 0x2U, /*!< Four partial 8-bit Standard or extended ID slices per ID Filter Table element. */
+ kFLEXCAN_RxFifoFilterTypeD = 0x3U, /*!< All frames rejected. */
+} flexcan_rx_fifo_filter_type_t;
+
+/*!
+ * @brief FlexCAN Rx FIFO priority
+ *
+ * The matching process starts from the Rx MB(or Rx FIFO) with higher priority.
+ * If no MB(or Rx FIFO filter) is satisfied, the matching process goes on with
+ * the Rx FIFO(or Rx MB) with lower priority.
+ */
+typedef enum _flexcan_rx_fifo_priority
+{
+ kFLEXCAN_RxFifoPrioLow = 0x0U, /*!< Matching process start from Rx Message Buffer first*/
+ kFLEXCAN_RxFifoPrioHigh = 0x1U, /*!< Matching process start from Rx FIFO first*/
+} flexcan_rx_fifo_priority_t;
+
+/*!
+ * @brief FlexCAN interrupt configuration structure, default settings all disabled.
+ *
+ * This structure contains the settings for all of the FlexCAN Module interrupt configurations.
+ * Note: FlexCAN Message Buffers and Rx FIFO have their own interrupts.
+ */
+enum _flexcan_interrupt_enable
+{
+ kFLEXCAN_BusOffInterruptEnable = CAN_CTRL1_BOFFMSK_MASK, /*!< Bus Off interrupt. */
+ kFLEXCAN_ErrorInterruptEnable = CAN_CTRL1_ERRMSK_MASK, /*!< Error interrupt. */
+ kFLEXCAN_RxWarningInterruptEnable = CAN_CTRL1_RWRNMSK_MASK, /*!< Rx Warning interrupt. */
+ kFLEXCAN_TxWarningInterruptEnable = CAN_CTRL1_TWRNMSK_MASK, /*!< Tx Warning interrupt. */
+ kFLEXCAN_WakeUpInterruptEnable = CAN_MCR_WAKMSK_MASK, /*!< Wake Up interrupt. */
+};
+
+/*!
+ * @brief FlexCAN status flags.
+ *
+ * This provides constants for the FlexCAN status flags for use in the FlexCAN functions.
+ * Note: The CPU read action clears FlEXCAN_ErrorFlag, therefore user need to
+ * read FlEXCAN_ErrorFlag and distinguish which error is occur using
+ * @ref _flexcan_error_flags enumerations.
+ */
+enum _flexcan_flags
+{
+ kFLEXCAN_SynchFlag = CAN_ESR1_SYNCH_MASK, /*!< CAN Synchronization Status. */
+ kFLEXCAN_TxWarningIntFlag = CAN_ESR1_TWRNINT_MASK, /*!< Tx Warning Interrupt Flag. */
+ kFLEXCAN_RxWarningIntFlag = CAN_ESR1_RWRNINT_MASK, /*!< Rx Warning Interrupt Flag. */
+ kFLEXCAN_TxErrorWarningFlag = CAN_ESR1_TXWRN_MASK, /*!< Tx Error Warning Status. */
+ kFLEXCAN_RxErrorWarningFlag = CAN_ESR1_RXWRN_MASK, /*!< Rx Error Warning Status. */
+ kFLEXCAN_IdleFlag = CAN_ESR1_IDLE_MASK, /*!< CAN IDLE Status Flag. */
+ kFLEXCAN_FaultConfinementFlag = CAN_ESR1_FLTCONF_MASK, /*!< Fault Confinement State Flag. */
+ kFLEXCAN_TransmittingFlag = CAN_ESR1_TX_MASK, /*!< FlexCAN In Transmission Status. */
+ kFLEXCAN_ReceivingFlag = CAN_ESR1_RX_MASK, /*!< FlexCAN In Reception Status. */
+ kFLEXCAN_BusOffIntFlag = CAN_ESR1_BOFFINT_MASK, /*!< Bus Off Interrupt Flag. */
+ kFLEXCAN_ErrorIntFlag = CAN_ESR1_ERRINT_MASK, /*!< Error Interrupt Flag. */
+ kFLEXCAN_WakeUpIntFlag = CAN_ESR1_WAKINT_MASK, /*!< Wake-Up Interrupt Flag. */
+ kFLEXCAN_ErrorFlag = CAN_ESR1_BIT1ERR_MASK | /*!< All FlexCAN Error Status. */
+ CAN_ESR1_BIT0ERR_MASK |
+ CAN_ESR1_ACKERR_MASK | CAN_ESR1_CRCERR_MASK | CAN_ESR1_FRMERR_MASK | CAN_ESR1_STFERR_MASK,
+};
+
+/*!
+ * @brief FlexCAN error status flags.
+ *
+ * The FlexCAN Error Status enumerations is used to report current error of the FlexCAN bus.
+ * This enumerations should be used with KFLEXCAN_ErrorFlag in @ref _flexcan_flags enumerations
+ * to ditermine which error is generated.
+ */
+enum _flexcan_error_flags
+{
+ kFLEXCAN_StuffingError = CAN_ESR1_STFERR_MASK, /*!< Stuffing Error. */
+ kFLEXCAN_FormError = CAN_ESR1_FRMERR_MASK, /*!< Form Error. */
+ kFLEXCAN_CrcError = CAN_ESR1_CRCERR_MASK, /*!< Cyclic Redundancy Check Error. */
+ kFLEXCAN_AckError = CAN_ESR1_ACKERR_MASK, /*!< Received no ACK on transmission. */
+ kFLEXCAN_Bit0Error = CAN_ESR1_BIT0ERR_MASK, /*!< Unable to send dominant bit. */
+ kFLEXCAN_Bit1Error = CAN_ESR1_BIT1ERR_MASK, /*!< Unable to send recessive bit. */
+};
+
+/*!
+ * @brief FlexCAN Rx FIFO status flags.
+ *
+ * The FlexCAN Rx FIFO Status enumerations are used to determine the status of the
+ * Rx FIFO. Because Rx FIFO occupy the MB0 ~ MB7 (Rx Fifo filter also occupies
+ * more Message Buffer space), Rx FIFO status flags are mapped to the corresponding
+ * Message Buffer status flags.
+ */
+enum _flexcan_rx_fifo_flags
+{
+ kFLEXCAN_RxFifoOverflowFlag = CAN_IFLAG1_BUF7I_MASK, /*!< Rx FIFO overflow flag. */
+ kFLEXCAN_RxFifoWarningFlag = CAN_IFLAG1_BUF6I_MASK, /*!< Rx FIFO almost full flag. */
+ kFLEXCAN_RxFifoFrameAvlFlag = CAN_IFLAG1_BUF5I_MASK, /*!< Frames available in Rx FIFO flag. */
+};
+
+#if defined(__CC_ARM)
+#pragma anon_unions
+#endif
+/*! @brief FlexCAN message frame structure. */
+typedef struct _flexcan_frame
+{
+ struct
+ {
+ uint32_t timestamp : 16; /*!< FlexCAN internal Free-Running Counter Time Stamp. */
+ uint32_t length : 4; /*!< CAN frame payload length in bytes(Range: 0~8). */
+ uint32_t type : 1; /*!< CAN Frame Type(DATA or REMOTE). */
+ uint32_t format : 1; /*!< CAN Frame Identifier(STD or EXT format). */
+ uint32_t reserve1 : 1; /*!< Reserved for placeholder. */
+ uint32_t idhit : 9; /*!< CAN Rx FIFO filter hit id(This value is only used in Rx FIFO receive mode). */
+ };
+ struct
+ {
+ uint32_t id : 29; /*!< CAN Frame Identifier, should be set using FLEXCAN_ID_EXT() or FLEXCAN_ID_STD() macro. */
+ uint32_t reserve2 : 3; /*!< Reserved for place holder. */
+ };
+ union
+ {
+ struct
+ {
+ uint32_t dataWord0; /*!< CAN Frame payload word0. */
+ uint32_t dataWord1; /*!< CAN Frame payload word1. */
+ };
+ struct
+ {
+ uint8_t dataByte3; /*!< CAN Frame payload byte3. */
+ uint8_t dataByte2; /*!< CAN Frame payload byte2. */
+ uint8_t dataByte1; /*!< CAN Frame payload byte1. */
+ uint8_t dataByte0; /*!< CAN Frame payload byte0. */
+ uint8_t dataByte7; /*!< CAN Frame payload byte7. */
+ uint8_t dataByte6; /*!< CAN Frame payload byte6. */
+ uint8_t dataByte5; /*!< CAN Frame payload byte5. */
+ uint8_t dataByte4; /*!< CAN Frame payload byte4. */
+ };
+ };
+} flexcan_frame_t;
+
+/*! @brief FlexCAN module configuration structure. */
+typedef struct _flexcan_config
+{
+ uint32_t baudRate; /*!< FlexCAN baud rate in bps. */
+ flexcan_clock_source_t clkSrc; /*!< Clock source for FlexCAN Protocol Engine. */
+ uint8_t maxMbNum; /*!< The maximum number of Message Buffers used by user. */
+ bool enableLoopBack; /*!< Enable or Disable Loop Back Self Test Mode. */
+ bool enableSelfWakeup; /*!< Enable or Disable Self Wakeup Mode. */
+ bool enableIndividMask; /*!< Enable or Disable Rx Individual Mask. */
+#if (defined(FSL_FEATURE_FLEXCAN_HAS_DOZE_MODE_SUPPORT) && FSL_FEATURE_FLEXCAN_HAS_DOZE_MODE_SUPPORT)
+ bool enableDoze; /*!< Enable or Disable Doze Mode. */
+#endif
+} flexcan_config_t;
+
+/*! @brief FlexCAN protocol timing characteristic configuration structure. */
+typedef struct _flexcan_timing_config
+{
+ uint8_t preDivider; /*!< Clock Pre-scaler Division Factor. */
+ uint8_t rJumpwidth; /*!< Re-sync Jump Width. */
+ uint8_t phaseSeg1; /*!< Phase Segment 1. */
+ uint8_t phaseSeg2; /*!< Phase Segment 2. */
+ uint8_t propSeg; /*!< Propagation Segment. */
+} flexcan_timing_config_t;
+
+/*!
+ * @brief FlexCAN Receive Message Buffer configuration structure
+ *
+ * This structure is used as the parameter of FLEXCAN_SetRxMbConfig() function.
+ * The FLEXCAN_SetRxMbConfig() function is used to configure FlexCAN Receive
+ * Message Buffer. The function abort previous receiving process, clean the
+ * Message Buffer and activate the Rx Message Buffer using given Message Buffer
+ * setting.
+ */
+typedef struct _flexcan_rx_mb_config
+{
+ uint32_t id; /*!< CAN Message Buffer Frame Identifier, should be set using
+ FLEXCAN_ID_EXT() or FLEXCAN_ID_STD() macro. */
+ flexcan_frame_format_t format; /*!< CAN Frame Identifier format(Standard of Extend). */
+ flexcan_frame_type_t type; /*!< CAN Frame Type(Data or Remote). */
+} flexcan_rx_mb_config_t;
+
+/*! @brief FlexCAN Rx FIFO configure structure. */
+typedef struct _flexcan_rx_fifo_config
+{
+ uint32_t *idFilterTable; /*!< Pointer to FlexCAN Rx FIFO identifier filter table. */
+ uint8_t idFilterNum; /*!< The quantity of filter elements. */
+ flexcan_rx_fifo_filter_type_t idFilterType; /*!< The FlexCAN Rx FIFO Filter type. */
+ flexcan_rx_fifo_priority_t priority; /*!< The FlexCAN Rx FIFO receive priority. */
+} flexcan_rx_fifo_config_t;
+
+/*! @brief FlexCAN Message Buffer transfer. */
+typedef struct _flexcan_mb_transfer
+{
+ flexcan_frame_t *frame; /*!< The buffer of CAN Message to be transfer. */
+ uint8_t mbIdx; /*!< The index of Message buffer used to transfer Message. */
+} flexcan_mb_transfer_t;
+
+/*! @brief FlexCAN Rx FIFO transfer. */
+typedef struct _flexcan_fifo_transfer
+{
+ flexcan_frame_t *frame; /*!< The buffer of CAN Message to be received from Rx FIFO. */
+} flexcan_fifo_transfer_t;
+
+/*! @brief FlexCAN handle structure definition. */
+typedef struct _flexcan_handle flexcan_handle_t;
+
+/*! @brief FlexCAN transfer callback function.
+ *
+ * The FlexCAN transfer callback returns a value from the underlying layer.
+ * If the status equals to kStatus_FLEXCAN_ErrorStatus, the result parameter is the Content of
+ * FlexCAN status register which can be used to get the working status(or error status) of FlexCAN module.
+ * If the status equals to other FlexCAN Message Buffer transfer status, the result is the index of
+ * Message Buffer that generate transfer event.
+ * If the status equals to other FlexCAN Message Buffer transfer status, the result is meaningless and should be
+ * Ignored.
+ */
+typedef void (*flexcan_transfer_callback_t)(
+ CAN_Type *base, flexcan_handle_t *handle, status_t status, uint32_t result, void *userData);
+
+/*! @brief FlexCAN handle structure. */
+struct _flexcan_handle
+{
+ flexcan_transfer_callback_t callback; /*!< Callback function. */
+ void *userData; /*!< FlexCAN callback function parameter.*/
+ flexcan_frame_t *volatile mbFrameBuf[CAN_WORD1_COUNT];
+ /*!< The buffer for received data from Message Buffers. */
+ flexcan_frame_t *volatile rxFifoFrameBuf; /*!< The buffer for received data from Rx FIFO. */
+ volatile uint8_t mbState[CAN_WORD1_COUNT]; /*!< Message Buffer transfer state. */
+ volatile uint8_t rxFifoState; /*!< Rx FIFO transfer state. */
+};
+
+/******************************************************************************
+ * API
+ *****************************************************************************/
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+/*!
+ * @name Initialization and deinitialization
+ * @{
+ */
+
+/*!
+ * @brief Initializes a FlexCAN instance.
+ *
+ * This function initializes the FlexCAN module with user-defined settings.
+ * This example shows how to set up the flexcan_config_t parameters and how
+ * to call the FLEXCAN_Init function by passing in these parameters:
+ * @code
+ * flexcan_config_t flexcanConfig;
+ * flexcanConfig.clkSrc = KFLEXCAN_ClkSrcOsc;
+ * flexcanConfig.baudRate = 125000U;
+ * flexcanConfig.maxMbNum = 16;
+ * flexcanConfig.enableLoopBack = false;
+ * flexcanConfig.enableSelfWakeup = false;
+ * flexcanConfig.enableIndividMask = false;
+ * flexcanConfig.enableDoze = false;
+ * FLEXCAN_Init(CAN0, &flexcanConfig, 8000000UL);
+ * @endcode
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param config Pointer to user-defined configuration structure.
+ * @param sourceClock_Hz FlexCAN Protocol Engine clock source frequency in Hz.
+ */
+void FLEXCAN_Init(CAN_Type *base, const flexcan_config_t *config, uint32_t sourceClock_Hz);
+
+/*!
+ * @brief De-initializes a FlexCAN instance.
+ *
+ * This function disable the FlexCAN module clock and set all register value
+ * to reset value.
+ *
+ * @param base FlexCAN peripheral base address.
+ */
+void FLEXCAN_Deinit(CAN_Type *base);
+
+/*!
+ * @brief Get the default configuration structure.
+ *
+ * This function initializes the FlexCAN configure structure to default value. The default
+ * value are:
+ * flexcanConfig->clkSrc = KFLEXCAN_ClkSrcOsc;
+ * flexcanConfig->baudRate = 125000U;
+ * flexcanConfig->maxMbNum = 16;
+ * flexcanConfig->enableLoopBack = false;
+ * flexcanConfig->enableSelfWakeup = false;
+ * flexcanConfig->enableIndividMask = false;
+ * flexcanConfig->enableDoze = false;
+ *
+ * @param config Pointer to FlexCAN configuration structure.
+ */
+void FLEXCAN_GetDefaultConfig(flexcan_config_t *config);
+
+/* @} */
+
+/*!
+ * @name Configuration.
+ * @{
+ */
+
+/*!
+ * @brief Sets the FlexCAN protocol timing characteristic.
+ *
+ * This function gives user settings to CAN bus timing characteristic.
+ * The function is for an experienced user. For less experienced users, call
+ * the FLEXCAN_Init() and fill the baud rate field with a desired value.
+ * This provides the default timing characteristics to the module.
+ *
+ * Note that calling FLEXCAN_SetTimingConfig() overrides the baud rate set
+ * in FLEXCAN_Init().
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param config Pointer to the timing configuration structure.
+ */
+void FLEXCAN_SetTimingConfig(CAN_Type *base, const flexcan_timing_config_t *config);
+
+/*!
+ * @brief Sets the FlexCAN receive message buffer global mask.
+ *
+ * This function sets the global mask for FlexCAN message buffer in a matching process.
+ * The configuration is only effective when the Rx individual mask is disabled in the FLEXCAN_Init().
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param mask Rx Message Buffer Global Mask value.
+ */
+void FlEXCAN_SetRxMbGlobalMask(CAN_Type *base, uint32_t mask);
+
+/*!
+ * @brief Sets the FlexCAN receive FIFO global mask.
+ *
+ * This function sets the global mask for FlexCAN FIFO in a matching process.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param mask Rx Fifo Global Mask value.
+ */
+void FlEXCAN_SetRxFifoGlobalMask(CAN_Type *base, uint32_t mask);
+
+/*!
+ * @brief Sets the FlexCAN receive individual mask.
+ *
+ * This function sets the individual mask for FlexCAN matching process.
+ * The configuration is only effective when the Rx individual mask is enabled in FLEXCAN_Init().
+ * If Rx FIFO is disabled, the individual mask is applied to the corresponding Message Buffer.
+ * If Rx FIFO is enabled, the individual mask for Rx FIFO occupied Message Buffer is applied to
+ * the Rx Filter with same index. What calls for special attention is that only the first 32
+ * individual masks can be used as Rx FIFO filter mask.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param maskIdx The Index of individual Mask.
+ * @param mask Rx Individual Mask value.
+ */
+void FlEXCAN_SetRxIndividualMask(CAN_Type *base, uint8_t maskIdx, uint32_t mask);
+
+/*!
+ * @brief Configures a FlexCAN transmit message buffer.
+ *
+ * This function aborts the previous transmission, cleans the Message Buffer, and
+ * configures it as a Transmit Message Buffer.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param mbIdx The Message Buffer index.
+ * @param enable Enable/Disable Tx Message Buffer.
+ * - true: Enable Tx Message Buffer.
+ * - false: Disable Tx Message Buffer.
+ */
+void FLEXCAN_SetTxMbConfig(CAN_Type *base, uint8_t mbIdx, bool enable);
+
+/*!
+ * @brief Configures a FlexCAN Receive Message Buffer.
+ *
+ * This function cleans a FlexCAN build-in Message Buffer and configures it
+ * as a Receive Message Buffer.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param mbIdx The Message Buffer index.
+ * @param config Pointer to FlexCAN Message Buffer configuration structure.
+ * @param enable Enable/Disable Rx Message Buffer.
+ * - true: Enable Rx Message Buffer.
+ * - false: Disable Rx Message Buffer.
+ */
+void FLEXCAN_SetRxMbConfig(CAN_Type *base, uint8_t mbIdx, const flexcan_rx_mb_config_t *config, bool enable);
+
+/*!
+ * @brief Configures the FlexCAN Rx FIFO.
+ *
+ * This function configures the Rx FIFO with given Rx FIFO configuration.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param config Pointer to FlexCAN Rx FIFO configuration structure.
+ * @param enable Enable/Disable Rx FIFO.
+ * - true: Enable Rx FIFO.
+ * - false: Disable Rx FIFO.
+ */
+void FlEXCAN_SetRxFifoConfig(CAN_Type *base, const flexcan_rx_fifo_config_t *config, bool enable);
+
+/* @} */
+
+/*!
+ * @name Status
+ * @{
+ */
+
+/*!
+ * @brief Gets the FlexCAN module interrupt flags.
+ *
+ * This function gets all FlexCAN status flags. The flags are returned as the logical
+ * OR value of the enumerators @ref _flexcan_flags. To check the specific status,
+ * compare the return value with enumerators in @ref _flexcan_flags.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @return FlexCAN status flags which are ORed by the enumerators in the _flexcan_flags.
+ */
+static inline uint32_t FLEXCAN_GetStatusFlags(CAN_Type *base)
+{
+ return base->ESR1;
+}
+
+/*!
+ * @brief Clears status flags with the provided mask.
+ *
+ * This function clears the FlexCAN status flags with a provided mask. An automatically cleared flag
+ * can't be cleared by this function.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param mask The status flags to be cleared, it is logical OR value of @ref _flexcan_flags.
+ */
+static inline void FLEXCAN_ClearStatusFlags(CAN_Type *base, uint32_t mask)
+{
+ /* Write 1 to clear status flag. */
+ base->ESR1 = mask;
+}
+
+/*!
+ * @brief Gets the FlexCAN Bus Error Counter value.
+ *
+ * This function gets the FlexCAN Bus Error Counter value for both Tx and
+ * Rx direction. These values may be needed in the upper layer error handling.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param txErrBuf Buffer to store Tx Error Counter value.
+ * @param rxErrBuf Buffer to store Rx Error Counter value.
+ */
+static inline void FlEXCAN_GetBusErrCount(CAN_Type *base, uint8_t *txErrBuf, uint8_t *rxErrBuf)
+{
+ if (txErrBuf)
+ {
+ *txErrBuf = (uint8_t)((base->ECR & CAN_ECR_TXERRCNT_MASK) >> CAN_ECR_TXERRCNT_SHIFT);
+ }
+
+ if (rxErrBuf)
+ {
+ *rxErrBuf = (uint8_t)((base->ECR & CAN_ECR_RXERRCNT_MASK) >> CAN_ECR_RXERRCNT_SHIFT);
+ }
+}
+
+/*!
+ * @brief Gets the FlexCAN Message Buffer interrupt flags.
+ *
+ * This function gets the interrupt flags of a given Message Buffers.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param mask The ORed FlexCAN Message Buffer mask.
+ * @return The status of given Message Buffers.
+ */
+#if (defined(FSL_FEATURE_FLEXCAN_HAS_EXTENDED_FLAG_REGISTER)) && (FSL_FEATURE_FLEXCAN_HAS_EXTENDED_FLAG_REGISTER > 0)
+static inline uint64_t FLEXCAN_GetMbStatusFlags(CAN_Type *base, uint64_t mask)
+#else
+static inline uint32_t FLEXCAN_GetMbStatusFlags(CAN_Type *base, uint32_t mask)
+#endif
+{
+#if (defined(FSL_FEATURE_FLEXCAN_HAS_EXTENDED_FLAG_REGISTER)) && (FSL_FEATURE_FLEXCAN_HAS_EXTENDED_FLAG_REGISTER > 0)
+ return ((((uint64_t)base->IFLAG1) & mask) | ((((uint64_t)base->IFLAG2) << 32) & mask));
+#else
+ return (base->IFLAG1 & mask);
+#endif
+}
+
+/*!
+ * @brief Clears the FlexCAN Message Buffer interrupt flags.
+ *
+ * This function clears the interrupt flags of a given Message Buffers.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param mask The ORed FlexCAN Message Buffer mask.
+ */
+#if (defined(FSL_FEATURE_FLEXCAN_HAS_EXTENDED_FLAG_REGISTER)) && (FSL_FEATURE_FLEXCAN_HAS_EXTENDED_FLAG_REGISTER > 0)
+static inline void FLEXCAN_ClearMbStatusFlags(CAN_Type *base, uint64_t mask)
+#else
+static inline void FLEXCAN_ClearMbStatusFlags(CAN_Type *base, uint32_t mask)
+#endif
+{
+#if (defined(FSL_FEATURE_FLEXCAN_HAS_EXTENDED_FLAG_REGISTER)) && (FSL_FEATURE_FLEXCAN_HAS_EXTENDED_FLAG_REGISTER > 0)
+ base->IFLAG1 = (uint32_t)(mask & 0xFFFFFFFF);
+ base->IFLAG2 = (uint32_t)(mask >> 32);
+#else
+ base->IFLAG1 = mask;
+#endif
+}
+
+/* @} */
+
+/*!
+ * @name Interrupts
+ * @{
+ */
+
+/*!
+ * @brief Enables FlexCAN interrupts according to provided mask.
+ *
+ * This function enables the FlexCAN interrupts according to provided mask. The mask
+ * is a logical OR of enumeration members, see @ref _flexcan_interrupt_enable.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param mask The interrupts to enable. Logical OR of @ref _flexcan_interrupt_enable.
+ */
+static inline void FLEXCAN_EnableInterrupts(CAN_Type *base, uint32_t mask)
+{
+ /* Solve Wake Up Interrupt. */
+ if (mask & kFLEXCAN_WakeUpInterruptEnable)
+ {
+ base->MCR |= CAN_MCR_WAKMSK_MASK;
+ }
+
+ /* Solve others. */
+ base->CTRL1 |= (mask & (~((uint32_t)kFLEXCAN_WakeUpInterruptEnable)));
+}
+
+/*!
+ * @brief Disables FlexCAN interrupts according to provided mask.
+ *
+ * This function disables the FlexCAN interrupts according to provided mask. The mask
+ * is a logical OR of enumeration members, see @ref _flexcan_interrupt_enable.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param mask The interrupts to disable. Logical OR of @ref _flexcan_interrupt_enable.
+ */
+static inline void FLEXCAN_DisableInterrupts(CAN_Type *base, uint32_t mask)
+{
+ /* Solve Wake Up Interrupt. */
+ if (mask & kFLEXCAN_WakeUpInterruptEnable)
+ {
+ base->MCR &= ~CAN_MCR_WAKMSK_MASK;
+ }
+
+ /* Solve others. */
+ base->CTRL1 &= ~(mask & (~((uint32_t)kFLEXCAN_WakeUpInterruptEnable)));
+}
+
+/*!
+ * @brief Enables FlexCAN Message Buffer interrupts.
+ *
+ * This function enables the interrupts of given Message Buffers
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param mask The ORed FlexCAN Message Buffer mask.
+ */
+#if (defined(FSL_FEATURE_FLEXCAN_HAS_EXTENDED_FLAG_REGISTER)) && (FSL_FEATURE_FLEXCAN_HAS_EXTENDED_FLAG_REGISTER > 0)
+static inline void FLEXCAN_EnableMbInterrupts(CAN_Type *base, uint64_t mask)
+#else
+static inline void FLEXCAN_EnableMbInterrupts(CAN_Type *base, uint32_t mask)
+#endif
+{
+#if (defined(FSL_FEATURE_FLEXCAN_HAS_EXTENDED_FLAG_REGISTER)) && (FSL_FEATURE_FLEXCAN_HAS_EXTENDED_FLAG_REGISTER > 0)
+ base->IMASK1 |= (uint32_t)(mask & 0xFFFFFFFF);
+ base->IMASK2 |= (uint32_t)(mask >> 32);
+#else
+ base->IMASK1 |= mask;
+#endif
+}
+
+/*!
+ * @brief Disables FlexCAN Message Buffer interrupts.
+ *
+ * This function disables the interrupts of given Message Buffers
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param mask The ORed FlexCAN Message Buffer mask.
+ */
+#if (defined(FSL_FEATURE_FLEXCAN_HAS_EXTENDED_FLAG_REGISTER)) && (FSL_FEATURE_FLEXCAN_HAS_EXTENDED_FLAG_REGISTER > 0)
+static inline void FLEXCAN_DisableMbInterrupts(CAN_Type *base, uint64_t mask)
+#else
+static inline void FLEXCAN_DisableMbInterrupts(CAN_Type *base, uint32_t mask)
+#endif
+{
+#if (defined(FSL_FEATURE_FLEXCAN_HAS_EXTENDED_FLAG_REGISTER)) && (FSL_FEATURE_FLEXCAN_HAS_EXTENDED_FLAG_REGISTER > 0)
+ base->IMASK1 &= ~((uint32_t)(mask & 0xFFFFFFFF));
+ base->IMASK2 &= ~((uint32_t)(mask >> 32));
+#else
+ base->IMASK1 &= ~mask;
+#endif
+}
+
+/* @} */
+
+#if (defined(FSL_FEATURE_FLEXCAN_HAS_RX_FIFO_DMA) && FSL_FEATURE_FLEXCAN_HAS_RX_FIFO_DMA)
+/*!
+ * @name DMA Control
+ * @{
+ */
+
+/*!
+ * @brief Enables or disables the FlexCAN Rx FIFO DMA request.
+ *
+ * This function enables or disables the DMA feature of FlexCAN build-in Rx FIFO.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param enable true to enable, false to disable.
+ */
+void FLEXCAN_EnableRxFifoDMA(CAN_Type *base, bool enable);
+
+/*!
+ * @brief Gets the Rx FIFO Head address.
+ *
+ * This function returns the FlexCAN Rx FIFO Head address, which is mainly used for the DMA/eDMA use case.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @return FlexCAN Rx FIFO Head address.
+ */
+static inline uint32_t FLEXCAN_GetRxFifoHeadAddr(CAN_Type *base)
+{
+ return (uint32_t) & (base->MB[0].CS);
+}
+
+/* @} */
+#endif /* FSL_FEATURE_FLEXCAN_HAS_RX_FIFO_DMA */
+
+/*!
+ * @name Bus Operations
+ * @{
+ */
+
+/*!
+ * @brief Enables or disables the FlexCAN module operation.
+ *
+ * This function enables or disables the FlexCAN module.
+ *
+ * @param base FlexCAN base pointer.
+ * @param enable true to enable, false to disable.
+ */
+static inline void FLEXCAN_Enable(CAN_Type *base, bool enable)
+{
+ if (enable)
+ {
+ base->MCR &= ~CAN_MCR_MDIS_MASK;
+
+ /* Wait FlexCAN exit from low-power mode. */
+ while (base->MCR & CAN_MCR_LPMACK_MASK)
+ {
+ }
+ }
+ else
+ {
+ base->MCR |= CAN_MCR_MDIS_MASK;
+
+ /* Wait FlexCAN enter low-power mode. */
+ while (!(base->MCR & CAN_MCR_LPMACK_MASK))
+ {
+ }
+ }
+}
+
+/*!
+ * @brief Writes a FlexCAN Message to Transmit Message Buffer.
+ *
+ * This function writes a CAN Message to the specified Transmit Message Buffer
+ * and changes the Message Buffer state to start CAN Message transmit. After
+ * that the function returns immediately.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param mbIdx The FlexCAN Message Buffer index.
+ * @param txFrame Pointer to CAN message frame to be sent.
+ * @retval kStatus_Success - Write Tx Message Buffer Successfully.
+ * @retval kStatus_Fail - Tx Message Buffer is currently in use.
+ */
+status_t FLEXCAN_WriteTxMb(CAN_Type *base, uint8_t mbIdx, const flexcan_frame_t *txFrame);
+
+/*!
+ * @brief Reads a FlexCAN Message from Receive Message Buffer.
+ *
+ * This function reads a CAN message from a specified Receive Message Buffer.
+ * The function fills a receive CAN message frame structure with
+ * just received data and activates the Message Buffer again.
+ * The function returns immediately.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param mbIdx The FlexCAN Message Buffer index.
+ * @param rxFrame Pointer to CAN message frame structure for reception.
+ * @retval kStatus_Success - Rx Message Buffer is full and has been read successfully.
+ * @retval kStatus_FLEXCAN_RxOverflow - Rx Message Buffer is already overflowed and has been read successfully.
+ * @retval kStatus_Fail - Rx Message Buffer is empty.
+ */
+status_t FLEXCAN_ReadRxMb(CAN_Type *base, uint8_t mbIdx, flexcan_frame_t *rxFrame);
+
+/*!
+ * @brief Reads a FlexCAN Message from Rx FIFO.
+ *
+ * This function reads a CAN message from the FlexCAN build-in Rx FIFO.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param rxFrame Pointer to CAN message frame structure for reception.
+ * @retval kStatus_Success - Read Message from Rx FIFO successfully.
+ * @retval kStatus_Fail - Rx FIFO is not enabled.
+ */
+status_t FlEXCAN_ReadRxFifo(CAN_Type *base, flexcan_frame_t *rxFrame);
+
+/* @} */
+
+/*!
+ * @name Transactional
+ * @{
+ */
+
+/*!
+ * @brief Performs a polling send transaction on the CAN bus.
+ *
+ * Note that a transfer handle does not need to be created before calling this API.
+ *
+ * @param base FlexCAN peripheral base pointer.
+ * @param mbIdx The FlexCAN Message Buffer index.
+ * @param txFrame Pointer to CAN message frame to be sent.
+ * @retval kStatus_Success - Write Tx Message Buffer Successfully.
+ * @retval kStatus_Fail - Tx Message Buffer is currently in use.
+ */
+status_t FlEXCAN_TransferSendBlocking(CAN_Type *base, uint8_t mbIdx, flexcan_frame_t *txFrame);
+
+/*!
+ * @brief Performs a polling receive transaction on the CAN bus.
+ *
+ * Note that a transfer handle does not need to be created before calling this API.
+ *
+ * @param base FlexCAN peripheral base pointer.
+ * @param mbIdx The FlexCAN Message Buffer index.
+ * @param rxFrame Pointer to CAN message frame structure for reception.
+ * @retval kStatus_Success - Rx Message Buffer is full and has been read successfully.
+ * @retval kStatus_FLEXCAN_RxOverflow - Rx Message Buffer is already overflowed and has been read successfully.
+ * @retval kStatus_Fail - Rx Message Buffer is empty.
+ */
+status_t FlEXCAN_TransferReceiveBlocking(CAN_Type *base, uint8_t mbIdx, flexcan_frame_t *rxFrame);
+
+/*!
+ * @brief Performs a polling receive transaction from Rx FIFO on the CAN bus.
+ *
+ * Note that a transfer handle does not need to be created before calling this API.
+ *
+ * @param base FlexCAN peripheral base pointer.
+ * @param rxFrame Pointer to CAN message frame structure for reception.
+ * @retval kStatus_Success - Read Message from Rx FIFO successfully.
+ * @retval kStatus_Fail - Rx FIFO is not enabled.
+ */
+status_t FlEXCAN_TransferReceiveFifoBlocking(CAN_Type *base, flexcan_frame_t *rxFrame);
+
+/*!
+ * @brief Initializes the FlexCAN handle.
+ *
+ * This function initializes the FlexCAN handle which can be used for other FlexCAN
+ * transactional APIs. Usually, for a specified FlexCAN instance,
+ * call this API once to get the initialized handle.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param handle FlexCAN handle pointer.
+ * @param callback The callback function.
+ * @param userData The parameter of the callback function.
+ */
+void FLEXCAN_TransferCreateHandle(CAN_Type *base,
+ flexcan_handle_t *handle,
+ flexcan_transfer_callback_t callback,
+ void *userData);
+
+/*!
+ * @brief Sends a message using IRQ.
+ *
+ * This function sends a message using IRQ. This is a non-blocking function, which returns
+ * right away. When messages have been sent out, the send callback function is called.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param handle FlexCAN handle pointer.
+ * @param xfer FlexCAN Message Buffer transfer structure. See the #flexcan_mb_transfer_t.
+ * @retval kStatus_Success Start Tx Message Buffer sending process successfully.
+ * @retval kStatus_Fail Write Tx Message Buffer failed.
+ * @retval kStatus_FLEXCAN_TxBusy Tx Message Buffer is in use.
+ */
+status_t FLEXCAN_TransferSendNonBlocking(CAN_Type *base, flexcan_handle_t *handle, flexcan_mb_transfer_t *xfer);
+
+/*!
+ * @brief Receives a message using IRQ.
+ *
+ * This function receives a message using IRQ. This is non-blocking function, which returns
+ * right away. When the message has been received, the receive callback function is called.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param handle FlexCAN handle pointer.
+ * @param xfer FlexCAN Message Buffer transfer structure. See the #flexcan_mb_transfer_t.
+ * @retval kStatus_Success - Start Rx Message Buffer receiving process successfully.
+ * @retval kStatus_FLEXCAN_RxBusy - Rx Message Buffer is in use.
+ */
+status_t FLEXCAN_TransferReceiveNonBlocking(CAN_Type *base, flexcan_handle_t *handle, flexcan_mb_transfer_t *xfer);
+
+/*!
+ * @brief Receives a message from Rx FIFO using IRQ.
+ *
+ * This function receives a message using IRQ. This is a non-blocking function, which returns
+ * right away. When all messages have been received, the receive callback function is called.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param handle FlexCAN handle pointer.
+ * @param xfer FlexCAN Rx FIFO transfer structure. See the @ref flexcan_fifo_transfer_t.
+ * @retval kStatus_Success - Start Rx FIFO receiving process successfully.
+ * @retval kStatus_FLEXCAN_RxFifoBusy - Rx FIFO is currently in use.
+ */
+status_t FLEXCAN_TransferReceiveFifoNonBlocking(CAN_Type *base,
+ flexcan_handle_t *handle,
+ flexcan_fifo_transfer_t *xfer);
+
+/*!
+ * @brief Aborts the interrupt driven message send process.
+ *
+ * This function aborts the interrupt driven message send process.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param handle FlexCAN handle pointer.
+ * @param mbIdx The FlexCAN Message Buffer index.
+ */
+void FLEXCAN_TransferAbortSend(CAN_Type *base, flexcan_handle_t *handle, uint8_t mbIdx);
+
+/*!
+ * @brief Aborts the interrupt driven message receive process.
+ *
+ * This function aborts the interrupt driven message receive process.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param handle FlexCAN handle pointer.
+ * @param mbIdx The FlexCAN Message Buffer index.
+ */
+void FLEXCAN_TransferAbortReceive(CAN_Type *base, flexcan_handle_t *handle, uint8_t mbIdx);
+
+/*!
+ * @brief Aborts the interrupt driven message receive from Rx FIFO process.
+ *
+ * This function aborts the interrupt driven message receive from Rx FIFO process.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param handle FlexCAN handle pointer.
+ */
+void FLEXCAN_TransferAbortReceiveFifo(CAN_Type *base, flexcan_handle_t *handle);
+
+/*!
+ * @brief FlexCAN IRQ handle function.
+ *
+ * This function handles the FlexCAN Error, the Message Buffer, and the Rx FIFO IRQ request.
+ *
+ * @param base FlexCAN peripheral base address.
+ * @param handle FlexCAN handle pointer.
+ */
+void FLEXCAN_TransferHandleIRQ(CAN_Type *base, flexcan_handle_t *handle);
+
+/* @} */
+
+#if defined(__cplusplus)
+}
+#endif
+
+/*! @}*/
+
+#endif /* _FSL_FLEXCAN_H_ */