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rt-thread-official/bsp/imxrt/libraries/MIMXRT1170/MIMXRT1176/drivers/fsl_flexio_camera.c

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/*
* Copyright (c) 2015, Freescale Semiconductor, Inc.
* Copyright 2016-2020 NXP
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include "fsl_flexio_camera.h"
/* Component ID definition, used by tools. */
#ifndef FSL_COMPONENT_ID
#define FSL_COMPONENT_ID "platform.drivers.flexio_camera"
#endif
/*******************************************************************************
* Prototypes
******************************************************************************/
/*******************************************************************************
* Variables
******************************************************************************/
/*******************************************************************************
* Codes
******************************************************************************/
static uint32_t FLEXIO_CAMERA_GetInstance(FLEXIO_CAMERA_Type *base)
{
return FLEXIO_GetInstance(base->flexioBase);
}
/*!
* brief Gets the default configuration to configure the FlexIO Camera. The configuration
* can be used directly for calling the FLEXIO_CAMERA_Init().
* Example:
code
flexio_camera_config_t config;
FLEXIO_CAMERA_GetDefaultConfig(&userConfig);
endcode
* param config Pointer to the flexio_camera_config_t structure
*/
void FLEXIO_CAMERA_GetDefaultConfig(flexio_camera_config_t *config)
{
assert(config != NULL);
/* Initializes the configure structure to zero. */
(void)memset(config, 0, sizeof(*config));
config->enablecamera = false;
config->enableInDoze = false;
config->enableInDebug = false;
config->enableFastAccess = false;
}
/*!
* brief Ungates the FlexIO clock, resets the FlexIO module, and configures the FlexIO Camera.
*
* param base Pointer to FLEXIO_CAMERA_Type structure
* param config Pointer to flexio_camera_config_t structure
*/
void FLEXIO_CAMERA_Init(FLEXIO_CAMERA_Type *base, const flexio_camera_config_t *config)
{
assert((base != NULL) && (config != NULL));
assert(base->shifterCount > 0U);
uint32_t i = 0U;
volatile uint32_t controlVal = 0U;
#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
/* Ungate flexio clock. */
CLOCK_EnableClock(s_flexioClocks[FLEXIO_CAMERA_GetInstance(base)]);
#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
flexio_shifter_config_t shifterConfig;
flexio_timer_config_t timerConfig;
/* Clear the shifterConfig & timerConfig struct. */
(void)memset(&shifterConfig, 0, sizeof(shifterConfig));
(void)memset(&timerConfig, 0, sizeof(timerConfig));
/* Configure flexio camera */
controlVal = base->flexioBase->CTRL;
controlVal &=
~(FLEXIO_CTRL_DOZEN_MASK | FLEXIO_CTRL_DBGE_MASK | FLEXIO_CTRL_FASTACC_MASK | FLEXIO_CTRL_FLEXEN_MASK);
controlVal |= (FLEXIO_CTRL_DBGE(config->enableInDebug) | FLEXIO_CTRL_FASTACC(config->enableFastAccess) |
FLEXIO_CTRL_FLEXEN(config->enablecamera));
if (!config->enableInDoze)
{
controlVal |= FLEXIO_CTRL_DOZEN_MASK;
}
base->flexioBase->CTRL = controlVal;
/* FLEXIO_CAMERA shifter config */
shifterConfig.timerSelect = base->timerIdx;
shifterConfig.timerPolarity = kFLEXIO_ShifterTimerPolarityOnPositive;
shifterConfig.pinConfig = kFLEXIO_PinConfigOutputDisabled;
shifterConfig.pinSelect = base->datPinStartIdx;
shifterConfig.pinPolarity = kFLEXIO_PinActiveHigh;
shifterConfig.shifterMode = kFLEXIO_ShifterModeReceive;
shifterConfig.parallelWidth = FLEXIO_CAMERA_PARALLEL_DATA_WIDTH - 1U;
shifterConfig.inputSource = kFLEXIO_ShifterInputFromNextShifterOutput;
shifterConfig.shifterStop = kFLEXIO_ShifterStopBitDisable;
shifterConfig.shifterStart = kFLEXIO_ShifterStartBitDisabledLoadDataOnEnable;
/* Configure the shifters as FIFO buffer. */
for (i = base->shifterStartIdx; i < (base->shifterStartIdx + base->shifterCount - 1U); i++)
{
FLEXIO_SetShifterConfig(base->flexioBase, (uint8_t)i, &shifterConfig);
}
shifterConfig.inputSource = kFLEXIO_ShifterInputFromPin;
FLEXIO_SetShifterConfig(base->flexioBase, (uint8_t)i, &shifterConfig);
/* FLEXIO_CAMERA timer config, the PCLK's clk is source of timer to drive the shifter, the HREF is the selecting
* signal for available data. */
timerConfig.triggerSelect = FLEXIO_TIMER_TRIGGER_SEL_PININPUT(base->hrefPinIdx);
timerConfig.triggerPolarity = kFLEXIO_TimerTriggerPolarityActiveHigh;
timerConfig.triggerSource = kFLEXIO_TimerTriggerSourceInternal;
timerConfig.pinConfig = kFLEXIO_PinConfigOutputDisabled;
timerConfig.pinSelect = base->pclkPinIdx;
timerConfig.pinPolarity = kFLEXIO_PinActiveHigh;
timerConfig.timerMode = kFLEXIO_TimerModeSingle16Bit;
timerConfig.timerOutput = kFLEXIO_TimerOutputZeroNotAffectedByReset;
timerConfig.timerDecrement = kFLEXIO_TimerDecSrcOnPinInputShiftPinInput;
timerConfig.timerReset = kFLEXIO_TimerResetOnTimerTriggerRisingEdge;
timerConfig.timerDisable = kFLEXIO_TimerDisableOnTriggerFallingEdge;
timerConfig.timerEnable = kFLEXIO_TimerEnableOnTriggerRisingEdge;
timerConfig.timerStop = kFLEXIO_TimerStopBitDisabled;
timerConfig.timerStart = kFLEXIO_TimerStartBitDisabled;
timerConfig.timerCompare = 8U * base->shifterCount - 1U;
FLEXIO_SetTimerConfig(base->flexioBase, (uint8_t)base->timerIdx, &timerConfig);
/* Clear flags. */
FLEXIO_ClearShifterErrorFlags(base->flexioBase, (((1UL << (base->shifterCount)) - 1U) << (base->shifterStartIdx)));
FLEXIO_ClearTimerStatusFlags(base->flexioBase, 1UL << (base->timerIdx));
}
/*!
* brief Resets the FLEXIO_CAMERA shifer and timer config.
*
* note After calling this API, call FLEXO_CAMERA_Init to use the FlexIO Camera module.
*
* param base Pointer to FLEXIO_CAMERA_Type structure
*/
void FLEXIO_CAMERA_Deinit(FLEXIO_CAMERA_Type *base)
{
base->flexioBase->SHIFTCFG[base->shifterStartIdx] = 0;
base->flexioBase->SHIFTCTL[base->shifterStartIdx] = 0;
base->flexioBase->TIMCFG[base->timerIdx] = 0;
base->flexioBase->TIMCMP[base->timerIdx] = 0;
base->flexioBase->TIMCTL[base->timerIdx] = 0;
/* Clear the shifter flag. */
base->flexioBase->SHIFTSTAT = (1UL << base->shifterStartIdx);
/* Clear the timer flag. */
base->flexioBase->TIMSTAT = (1UL << base->timerIdx);
}
/*!
* brief Gets the FlexIO Camera status flags.
*
* param base Pointer to FLEXIO_CAMERA_Type structure
* return FlexIO shifter status flags
* arg FLEXIO_SHIFTSTAT_SSF_MASK
* arg 0
*/
uint32_t FLEXIO_CAMERA_GetStatusFlags(FLEXIO_CAMERA_Type *base)
{
uint32_t status = 0;
status = ((FLEXIO_GetShifterStatusFlags(base->flexioBase) >> (base->shifterStartIdx)) &
((1U << (base->shifterCount)) - 1U));
return status;
}
/*!
* brief Clears the receive buffer full flag manually.
*
* param base Pointer to the device.
* param mask status flag
* The parameter can be any combination of the following values:
* arg kFLEXIO_CAMERA_RxDataRegFullFlag
* arg kFLEXIO_CAMERA_RxErrorFlag
*/
void FLEXIO_CAMERA_ClearStatusFlags(FLEXIO_CAMERA_Type *base, uint32_t mask)
{
if ((mask & (uint32_t)kFLEXIO_CAMERA_RxDataRegFullFlag) != 0U)
{
FLEXIO_ClearShifterStatusFlags(base->flexioBase, ((1UL << (base->shifterCount)) - 1U)
<< (base->shifterStartIdx));
}
if ((mask & (uint32_t)kFLEXIO_CAMERA_RxErrorFlag) != 0U)
{ /* Clear error flags if they are asserted to make sure the buffer would be available. */
FLEXIO_ClearShifterErrorFlags(base->flexioBase, ((1UL << (base->shifterCount)) - 1U)
<< (base->shifterStartIdx));
}
}
/*!
* brief Switches on the interrupt for receive buffer full event.
*
* param base Pointer to the device.
*/
void FLEXIO_CAMERA_EnableInterrupt(FLEXIO_CAMERA_Type *base)
{
FLEXIO_EnableShifterStatusInterrupts(base->flexioBase, 1UL << (base->shifterStartIdx));
}
/*!
* brief Switches off the interrupt for receive buffer full event.
*
* param base Pointer to the device.
*
*/
void FLEXIO_CAMERA_DisableInterrupt(FLEXIO_CAMERA_Type *base)
{
FLEXIO_DisableShifterStatusInterrupts(base->flexioBase, 1UL << (base->shifterStartIdx));
}
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