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rt-thread-official/bsp/imxrt/Libraries/imxrt1021/devices/MIMXRT1021/drivers/fsl_flexio.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_flexio.h"
/*******************************************************************************
* Definitions
******************************************************************************/
/* Component ID definition, used by tools. */
#ifndef FSL_COMPONENT_ID
#define FSL_COMPONENT_ID "platform.drivers.flexio"
#endif
/*< @brief user configurable flexio handle count. */
#define FLEXIO_HANDLE_COUNT 2
/*******************************************************************************
* Variables
******************************************************************************/
/*! @brief Pointers to flexio bases for each instance. */
FLEXIO_Type *const s_flexioBases[] = FLEXIO_BASE_PTRS;
#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
/*! @brief Pointers to flexio clocks for each instance. */
const clock_ip_name_t s_flexioClocks[] = FLEXIO_CLOCKS;
#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
/*< @brief pointer to array of FLEXIO handle. */
static void *s_flexioHandle[FLEXIO_HANDLE_COUNT];
/*< @brief pointer to array of FLEXIO IP types. */
static void *s_flexioType[FLEXIO_HANDLE_COUNT];
/*< @brief pointer to array of FLEXIO Isr. */
static flexio_isr_t s_flexioIsr[FLEXIO_HANDLE_COUNT];
/*******************************************************************************
* Codes
******************************************************************************/
uint32_t FLEXIO_GetInstance(FLEXIO_Type *base)
{
uint32_t instance;
/* Find the instance index from base address mappings. */
for (instance = 0; instance < ARRAY_SIZE(s_flexioBases); instance++)
{
if (s_flexioBases[instance] == base)
{
break;
}
}
assert(instance < ARRAY_SIZE(s_flexioBases));
return instance;
}
void FLEXIO_Init(FLEXIO_Type *base, const flexio_config_t *userConfig)
{
uint32_t ctrlReg = 0;
#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
CLOCK_EnableClock(s_flexioClocks[FLEXIO_GetInstance(base)]);
#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
FLEXIO_Reset(base);
ctrlReg = base->CTRL;
ctrlReg &= ~(FLEXIO_CTRL_DOZEN_MASK | FLEXIO_CTRL_DBGE_MASK | FLEXIO_CTRL_FASTACC_MASK | FLEXIO_CTRL_FLEXEN_MASK);
ctrlReg |= (FLEXIO_CTRL_DBGE(userConfig->enableInDebug) | FLEXIO_CTRL_FASTACC(userConfig->enableFastAccess) |
FLEXIO_CTRL_FLEXEN(userConfig->enableFlexio));
if (!userConfig->enableInDoze)
{
ctrlReg |= FLEXIO_CTRL_DOZEN_MASK;
}
base->CTRL = ctrlReg;
}
void FLEXIO_Deinit(FLEXIO_Type *base)
{
FLEXIO_Enable(base, false);
#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
CLOCK_DisableClock(s_flexioClocks[FLEXIO_GetInstance(base)]);
#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
}
void FLEXIO_GetDefaultConfig(flexio_config_t *userConfig)
{
assert(userConfig);
userConfig->enableFlexio = true;
userConfig->enableInDoze = false;
userConfig->enableInDebug = true;
userConfig->enableFastAccess = false;
}
void FLEXIO_Reset(FLEXIO_Type *base)
{
/*do software reset, software reset operation affect all other FLEXIO registers except CTRL*/
base->CTRL |= FLEXIO_CTRL_SWRST_MASK;
base->CTRL = 0;
}
uint32_t FLEXIO_GetShifterBufferAddress(FLEXIO_Type *base, flexio_shifter_buffer_type_t type, uint8_t index)
{
assert(index < FLEXIO_SHIFTBUF_COUNT);
uint32_t address = 0;
switch (type)
{
case kFLEXIO_ShifterBuffer:
address = (uint32_t) & (base->SHIFTBUF[index]);
break;
case kFLEXIO_ShifterBufferBitSwapped:
address = (uint32_t) & (base->SHIFTBUFBIS[index]);
break;
case kFLEXIO_ShifterBufferByteSwapped:
address = (uint32_t) & (base->SHIFTBUFBYS[index]);
break;
case kFLEXIO_ShifterBufferBitByteSwapped:
address = (uint32_t) & (base->SHIFTBUFBBS[index]);
break;
#if defined(FSL_FEATURE_FLEXIO_HAS_SHFT_BUFFER_NIBBLE_BYTE_SWAP) && FSL_FEATURE_FLEXIO_HAS_SHFT_BUFFER_NIBBLE_BYTE_SWAP
case kFLEXIO_ShifterBufferNibbleByteSwapped:
address = (uint32_t) & (base->SHIFTBUFNBS[index]);
break;
#endif
#if defined(FSL_FEATURE_FLEXIO_HAS_SHFT_BUFFER_HALF_WORD_SWAP) && FSL_FEATURE_FLEXIO_HAS_SHFT_BUFFER_HALF_WORD_SWAP
case kFLEXIO_ShifterBufferHalfWordSwapped:
address = (uint32_t) & (base->SHIFTBUFHWS[index]);
break;
#endif
#if defined(FSL_FEATURE_FLEXIO_HAS_SHFT_BUFFER_NIBBLE_SWAP) && FSL_FEATURE_FLEXIO_HAS_SHFT_BUFFER_NIBBLE_SWAP
case kFLEXIO_ShifterBufferNibbleSwapped:
address = (uint32_t) & (base->SHIFTBUFNIS[index]);
break;
#endif
default:
break;
}
return address;
}
void FLEXIO_SetShifterConfig(FLEXIO_Type *base, uint8_t index, const flexio_shifter_config_t *shifterConfig)
{
base->SHIFTCFG[index] = FLEXIO_SHIFTCFG_INSRC(shifterConfig->inputSource)
#if FSL_FEATURE_FLEXIO_HAS_PARALLEL_WIDTH
| FLEXIO_SHIFTCFG_PWIDTH(shifterConfig->parallelWidth)
#endif /* FSL_FEATURE_FLEXIO_HAS_PARALLEL_WIDTH */
| FLEXIO_SHIFTCFG_SSTOP(shifterConfig->shifterStop) |
FLEXIO_SHIFTCFG_SSTART(shifterConfig->shifterStart);
base->SHIFTCTL[index] =
FLEXIO_SHIFTCTL_TIMSEL(shifterConfig->timerSelect) | FLEXIO_SHIFTCTL_TIMPOL(shifterConfig->timerPolarity) |
FLEXIO_SHIFTCTL_PINCFG(shifterConfig->pinConfig) | FLEXIO_SHIFTCTL_PINSEL(shifterConfig->pinSelect) |
FLEXIO_SHIFTCTL_PINPOL(shifterConfig->pinPolarity) | FLEXIO_SHIFTCTL_SMOD(shifterConfig->shifterMode);
}
void FLEXIO_SetTimerConfig(FLEXIO_Type *base, uint8_t index, const flexio_timer_config_t *timerConfig)
{
base->TIMCFG[index] =
FLEXIO_TIMCFG_TIMOUT(timerConfig->timerOutput) | FLEXIO_TIMCFG_TIMDEC(timerConfig->timerDecrement) |
FLEXIO_TIMCFG_TIMRST(timerConfig->timerReset) | FLEXIO_TIMCFG_TIMDIS(timerConfig->timerDisable) |
FLEXIO_TIMCFG_TIMENA(timerConfig->timerEnable) | FLEXIO_TIMCFG_TSTOP(timerConfig->timerStop) |
FLEXIO_TIMCFG_TSTART(timerConfig->timerStart);
base->TIMCMP[index] = FLEXIO_TIMCMP_CMP(timerConfig->timerCompare);
base->TIMCTL[index] = FLEXIO_TIMCTL_TRGSEL(timerConfig->triggerSelect) |
FLEXIO_TIMCTL_TRGPOL(timerConfig->triggerPolarity) |
FLEXIO_TIMCTL_TRGSRC(timerConfig->triggerSource) |
FLEXIO_TIMCTL_PINCFG(timerConfig->pinConfig) | FLEXIO_TIMCTL_PINSEL(timerConfig->pinSelect) |
FLEXIO_TIMCTL_PINPOL(timerConfig->pinPolarity) | FLEXIO_TIMCTL_TIMOD(timerConfig->timerMode);
}
status_t FLEXIO_RegisterHandleIRQ(void *base, void *handle, flexio_isr_t isr)
{
assert(base);
assert(handle);
assert(isr);
uint8_t index = 0;
/* Find the an empty handle pointer to store the handle. */
for (index = 0; index < FLEXIO_HANDLE_COUNT; index++)
{
if (s_flexioHandle[index] == NULL)
{
/* Register FLEXIO simulated driver base, handle and isr. */
s_flexioType[index] = base;
s_flexioHandle[index] = handle;
s_flexioIsr[index] = isr;
break;
}
}
if (index == FLEXIO_HANDLE_COUNT)
{
return kStatus_OutOfRange;
}
else
{
return kStatus_Success;
}
}
status_t FLEXIO_UnregisterHandleIRQ(void *base)
{
assert(base);
uint8_t index = 0;
/* Find the index from base address mappings. */
for (index = 0; index < FLEXIO_HANDLE_COUNT; index++)
{
if (s_flexioType[index] == base)
{
/* Unregister FLEXIO simulated driver handle and isr. */
s_flexioType[index] = NULL;
s_flexioHandle[index] = NULL;
s_flexioIsr[index] = NULL;
break;
}
}
if (index == FLEXIO_HANDLE_COUNT)
{
return kStatus_OutOfRange;
}
else
{
return kStatus_Success;
}
}
void FLEXIO_CommonIRQHandler(void)
{
uint8_t index;
for (index = 0; index < FLEXIO_HANDLE_COUNT; index++)
{
if (s_flexioHandle[index])
{
s_flexioIsr[index](s_flexioType[index], s_flexioHandle[index]);
}
}
/* Add for ARM errata 838869, affects Cortex-M4, Cortex-M4F Store immediate overlapping
exception return operation might vector to incorrect interrupt */
#if defined __CORTEX_M && (__CORTEX_M == 4U)
__DSB();
#endif
}
void FLEXIO_DriverIRQHandler(void)
{
FLEXIO_CommonIRQHandler();
}
void FLEXIO0_DriverIRQHandler(void)
{
FLEXIO_CommonIRQHandler();
}
void FLEXIO1_DriverIRQHandler(void)
{
FLEXIO_CommonIRQHandler();
}
void UART2_FLEXIO_DriverIRQHandler(void)
{
FLEXIO_CommonIRQHandler();
}
void FLEXIO2_DriverIRQHandler(void)
{
FLEXIO_CommonIRQHandler();
}
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