diff options
Diffstat (limited to 'drivers/src/fsl_wdog.c')
| -rw-r--r-- | drivers/src/fsl_wdog.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/drivers/src/fsl_wdog.c b/drivers/src/fsl_wdog.c new file mode 100644 index 0000000..781ac13 --- /dev/null +++ b/drivers/src/fsl_wdog.c @@ -0,0 +1,153 @@ +/* + * Copyright (c) 2015, Freescale Semiconductor, Inc. + * Copyright 2016-2017 NXP + * + * 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 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. + * + * 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_wdog.h" + +/******************************************************************************* + * Code + ******************************************************************************/ + +void WDOG_GetDefaultConfig(wdog_config_t *config) +{ + assert(config); + + config->enableWdog = true; + config->clockSource = kWDOG_LpoClockSource; + config->prescaler = kWDOG_ClockPrescalerDivide1; +#if defined(FSL_FEATURE_WDOG_HAS_WAITEN) && FSL_FEATURE_WDOG_HAS_WAITEN + config->workMode.enableWait = true; +#endif /* FSL_FEATURE_WDOG_HAS_WAITEN */ + config->workMode.enableStop = false; + config->workMode.enableDebug = false; + config->enableUpdate = true; + config->enableInterrupt = false; + config->enableWindowMode = false; + config->windowValue = 0U; + config->timeoutValue = 0xFFFFU; +} + +void WDOG_Init(WDOG_Type *base, const wdog_config_t *config) +{ + assert(config); + + uint32_t value = 0U; + uint32_t primaskValue = 0U; + + value = WDOG_STCTRLH_WDOGEN(config->enableWdog) | WDOG_STCTRLH_CLKSRC(config->clockSource) | + WDOG_STCTRLH_IRQRSTEN(config->enableInterrupt) | WDOG_STCTRLH_WINEN(config->enableWindowMode) | + WDOG_STCTRLH_ALLOWUPDATE(config->enableUpdate) | WDOG_STCTRLH_DBGEN(config->workMode.enableDebug) | + WDOG_STCTRLH_STOPEN(config->workMode.enableStop) | +#if defined(FSL_FEATURE_WDOG_HAS_WAITEN) && FSL_FEATURE_WDOG_HAS_WAITEN + WDOG_STCTRLH_WAITEN(config->workMode.enableWait) | +#endif /* FSL_FEATURE_WDOG_HAS_WAITEN */ + WDOG_STCTRLH_DISTESTWDOG(1U); + + /* Disable the global interrupts. Otherwise, an interrupt could effectively invalidate the unlock sequence + * and the WCT may expire. After the configuration finishes, re-enable the global interrupts. */ + primaskValue = DisableGlobalIRQ(); + WDOG_Unlock(base); + /* Wait one bus clock cycle */ + base->RSTCNT = 0U; + /* Set configruation */ + base->PRESC = WDOG_PRESC_PRESCVAL(config->prescaler); + base->WINH = (uint16_t)((config->windowValue >> 16U) & 0xFFFFU); + base->WINL = (uint16_t)((config->windowValue) & 0xFFFFU); + base->TOVALH = (uint16_t)((config->timeoutValue >> 16U) & 0xFFFFU); + base->TOVALL = (uint16_t)((config->timeoutValue) & 0xFFFFU); + base->STCTRLH = value; + EnableGlobalIRQ(primaskValue); +} + +void WDOG_Deinit(WDOG_Type *base) +{ + uint32_t primaskValue = 0U; + + /* Disable the global interrupts */ + primaskValue = DisableGlobalIRQ(); + WDOG_Unlock(base); + /* Wait one bus clock cycle */ + base->RSTCNT = 0U; + WDOG_Disable(base); + EnableGlobalIRQ(primaskValue); + WDOG_ClearResetCount(base); +} + +void WDOG_SetTestModeConfig(WDOG_Type *base, wdog_test_config_t *config) +{ + assert(config); + + uint32_t value = 0U; + uint32_t primaskValue = 0U; + + value = WDOG_STCTRLH_DISTESTWDOG(0U) | WDOG_STCTRLH_TESTWDOG(1U) | WDOG_STCTRLH_TESTSEL(config->testMode) | + WDOG_STCTRLH_BYTESEL(config->testedByte) | WDOG_STCTRLH_IRQRSTEN(0U) | WDOG_STCTRLH_WDOGEN(1U) | + WDOG_STCTRLH_ALLOWUPDATE(1U); + + /* Disable the global interrupts. Otherwise, an interrupt could effectively invalidate the unlock sequence + * and the WCT may expire. After the configuration finishes, re-enable the global interrupts. */ + primaskValue = DisableGlobalIRQ(); + WDOG_Unlock(base); + /* Wait one bus clock cycle */ + base->RSTCNT = 0U; + /* Set configruation */ + base->TOVALH = (uint16_t)((config->timeoutValue >> 16U) & 0xFFFFU); + base->TOVALL = (uint16_t)((config->timeoutValue) & 0xFFFFU); + base->STCTRLH = value; + EnableGlobalIRQ(primaskValue); +} + +uint32_t WDOG_GetStatusFlags(WDOG_Type *base) +{ + uint32_t status_flag = 0U; + + status_flag |= (base->STCTRLH & WDOG_STCTRLH_WDOGEN_MASK); + status_flag |= (base->STCTRLL & WDOG_STCTRLL_INTFLG_MASK); + + return status_flag; +} + +void WDOG_ClearStatusFlags(WDOG_Type *base, uint32_t mask) +{ + if (mask & kWDOG_TimeoutFlag) + { + base->STCTRLL |= WDOG_STCTRLL_INTFLG_MASK; + } +} + +void WDOG_Refresh(WDOG_Type *base) +{ + uint32_t primaskValue = 0U; + + /* Disable the global interrupt to protect refresh sequence */ + primaskValue = DisableGlobalIRQ(); + base->REFRESH = WDOG_FIRST_WORD_OF_REFRESH; + base->REFRESH = WDOG_SECOND_WORD_OF_REFRESH; + EnableGlobalIRQ(primaskValue); +} |