dl_wwdt.h

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/*
 * Copyright (c) 2020, Texas Instruments Incorporated
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/*!****************************************************************************
 *  @file       dl_wwdt.h
 *  @brief      Window Watchdog Timer (WWDT) Driver Library
 *  @defgroup   WWDT Window Watchdog Timer (WWDT)
 *
 *  @anchor ti_dl_dl_wwdt_Overview
 *  # Overview
 *
 *  The Window Watchdog Timer Driver Library allows full configuration of
 *  the MSPM0 WWDT module.
 *  The window watchdog timer (WWDT) supervises code execution.
 *  If the application software does not successfully reset the window
 *  watchdog within the programmed open time window, the window watchdog
 *  generates a SYSRST.
 *
 *  <hr>
 ******************************************************************************
 */
#ifndef ti_dl_dl_wwdt__include
#define ti_dl_dl_wwdt__include

#include <stdbool.h>
#include <stdint.h>

#include <ti/devices/msp/msp.h>

#ifdef __MSPM0_HAS_WWDT__

#ifdef __cplusplus
extern "C" {
#endif

/* clang-format off */

typedef enum {
    DL_WWDT_CLOCK_DIVIDE_1 = 0x00000000,
    DL_WWDT_CLOCK_DIVIDE_2 = 0x00000001,
    DL_WWDT_CLOCK_DIVIDE_3 = 0x00000002,
    DL_WWDT_CLOCK_DIVIDE_4 = 0x00000003,
    DL_WWDT_CLOCK_DIVIDE_5 = 0x00000004,
    DL_WWDT_CLOCK_DIVIDE_6 = 0x00000005,
    DL_WWDT_CLOCK_DIVIDE_7 = 0x00000006,
    DL_WWDT_CLOCK_DIVIDE_8 = 0x00000007
} DL_WWDT_CLOCK_DIVIDE;

typedef enum {
    DL_WWDT_WINDOW0 = WWDT_WWDTCTL1_WINSEL_WIN0,
    DL_WWDT_WINDOW1 = WWDT_WWDTCTL1_WINSEL_WIN1
} DL_WWDT_WINDOW;

typedef enum {
    DL_WWDT_WINDOW_PERIOD_0 = WWDT_WWDTCTL0_WINDOW0_SIZE_0,
    DL_WWDT_WINDOW_PERIOD_12 = WWDT_WWDTCTL0_WINDOW0_SIZE_12,
    DL_WWDT_WINDOW_PERIOD_18 = WWDT_WWDTCTL0_WINDOW0_SIZE_18,
    DL_WWDT_WINDOW_PERIOD_25 = WWDT_WWDTCTL0_WINDOW0_SIZE_25,
    DL_WWDT_WINDOW_PERIOD_50 = WWDT_WWDTCTL0_WINDOW0_SIZE_50,
    DL_WWDT_WINDOW_PERIOD_75 = WWDT_WWDTCTL0_WINDOW0_SIZE_75,
    DL_WWDT_WINDOW_PERIOD_81 = WWDT_WWDTCTL0_WINDOW0_SIZE_81,
    DL_WWDT_WINDOW_PERIOD_87 = WWDT_WWDTCTL0_WINDOW0_SIZE_87
} DL_WWDT_WINDOW_PERIOD;

typedef enum {
    DL_WWDT_TIMER_PERIOD_6_BITS = WWDT_WWDTCTL0_PER_EN_6,
    DL_WWDT_TIMER_PERIOD_8_BITS = WWDT_WWDTCTL0_PER_EN_8,
    DL_WWDT_TIMER_PERIOD_10_BITS = WWDT_WWDTCTL0_PER_EN_10,
    DL_WWDT_TIMER_PERIOD_12_BITS = WWDT_WWDTCTL0_PER_EN_12,
    DL_WWDT_TIMER_PERIOD_15_BITS = WWDT_WWDTCTL0_PER_EN_15,
    DL_WWDT_TIMER_PERIOD_18_BITS = WWDT_WWDTCTL0_PER_EN_18,
    DL_WWDT_TIMER_PERIOD_21_BITS = WWDT_WWDTCTL0_PER_EN_21,
    DL_WWDT_TIMER_PERIOD_25_BITS = WWDT_WWDTCTL0_PER_EN_25
} DL_WWDT_TIMER_PERIOD;

typedef enum {
    DL_WWDT_STOP_IN_SLEEP = WWDT_WWDTCTL0_STISM_STOP,
    DL_WWDT_RUN_IN_SLEEP = WWDT_WWDTCTL0_STISM_CONT
} DL_WWDT_SLEEP_MODE;

typedef enum {
    DL_WWDT_WATCHDOG_MODE = 0x0,
    DL_WWDT_INTERVAL_TIMER_MODE = WWDT_WWDTCTL0_MODE_INTERVAL
} DL_WWDT_MODE;

typedef enum {
    DL_WWDT_IIDX_NO_INT = WWDT_IIDX_STAT_NO_INTR,
    DL_WWDT_IIDX_INTERVAL_TIMER = WWDT_IIDX_STAT_INTTIM
} DL_WWDT_IIDX;

/* clang-format on */

__STATIC_INLINE void DL_WWDT_initWatchdogMode(WWDT_Regs *wwdt,
    DL_WWDT_CLOCK_DIVIDE divider, DL_WWDT_TIMER_PERIOD period,
    DL_WWDT_SLEEP_MODE sleepMode, DL_WWDT_WINDOW_PERIOD window0ClosedPeriod,
    DL_WWDT_WINDOW_PERIOD window1ClosedPeriod)
{
    /* Window1 is shifted because the #defines used as an input are shared
       between window 0 and window 1 */
    wwdt->WWDTCTL0 =
        (WWDT_WWDTCTL0_KEY_UNLOCK_W | (uint32_t) divider | (uint32_t) period |
            (uint32_t) sleepMode | (uint32_t) window0ClosedPeriod |
            ((uint32_t) window1ClosedPeriod << 4));
}

__STATIC_INLINE void DL_WWDT_initIntervalTimerMode(WWDT_Regs *wwdt,
    DL_WWDT_CLOCK_DIVIDE divider, DL_WWDT_TIMER_PERIOD period,
    DL_WWDT_SLEEP_MODE sleepMode)
{
    wwdt->WWDTCTL0 =
        (WWDT_WWDTCTL0_KEY_UNLOCK_W | (uint32_t) divider | (uint32_t) period |
            (uint32_t) sleepMode | WWDT_WWDTCTL0_MODE_INTERVAL);
}

__STATIC_INLINE void DL_WWDT_enablePower(WWDT_Regs *wwdt)
{
    wwdt->GPRCM.PWREN = (WWDT_PWREN_KEY_UNLOCK_W | WWDT_PWREN_ENABLE_ENABLE);
}

__STATIC_INLINE void DL_WWDT_disablePower(WWDT_Regs *wwdt)
{
    wwdt->GPRCM.PWREN = (WWDT_PWREN_KEY_UNLOCK_W | WWDT_PWREN_ENABLE_DISABLE);
}

__STATIC_INLINE bool DL_WWDT_isPowerEnabled(WWDT_Regs *wwdt)
{
    return ((wwdt->GPRCM.PWREN & WWDT_PWREN_ENABLE_MASK) ==
            WWDT_PWREN_ENABLE_ENABLE);
}

__STATIC_INLINE void DL_WWDT_reset(WWDT_Regs *wwdt)
{
    wwdt->GPRCM.RSTCTL =
        (WWDT_RSTCTL_KEY_UNLOCK_W | WWDT_RSTCTL_RESETSTKYCLR_CLR |
            WWDT_RSTCTL_RESETASSERT_ASSERT);
}

__STATIC_INLINE bool DL_WWDT_isReset(WWDT_Regs *wwdt)
{
    return ((wwdt->GPRCM.STAT & WWDT_STAT_RESETSTKY_MASK) ==
            WWDT_STAT_RESETSTKY_RESET);
}

__STATIC_INLINE void DL_WWDT_restart(WWDT_Regs *wwdt)
{
    wwdt->WWDTCNTRST = 0x00A7;
}

__STATIC_INLINE bool DL_WWDT_isRunning(WWDT_Regs *wwdt)
{
    return (wwdt->WWDTSTAT == WWDT_WWDTSTAT_RUN_ON);
}

__STATIC_INLINE void DL_WWDT_setActiveWindow(
    WWDT_Regs *wwdt, DL_WWDT_WINDOW window)
{
    wwdt->WWDTCTL1 = (WWDT_WWDTCTL1_KEY_UNLOCK_W | (uint32_t) window);
}

__STATIC_INLINE DL_WWDT_WINDOW DL_WWDT_getActiveWindow(WWDT_Regs *wwdt)
{
    uint32_t window = (wwdt->WWDTCTL1 & WWDT_WWDTCTL1_WINSEL_MASK);

    return (DL_WWDT_WINDOW)(window);
}

__STATIC_INLINE DL_WWDT_SLEEP_MODE DL_WWDT_getSleepMode(WWDT_Regs *wwdt)
{
    uint32_t mode = (wwdt->WWDTCTL0 & WWDT_WWDTCTL0_STISM_MASK);

    return (DL_WWDT_SLEEP_MODE)(mode);
}

__STATIC_INLINE DL_WWDT_MODE DL_WWDT_getMode(WWDT_Regs *wwdt)
{
    uint32_t mode = (wwdt->WWDTCTL0 & WWDT_WWDTCTL0_MODE_MASK);

    return (DL_WWDT_MODE)(mode);
}

__STATIC_INLINE DL_WWDT_WINDOW_PERIOD DL_WWDT_getWindowPeriod(
    WWDT_Regs *wwdt, DL_WWDT_WINDOW window)
{
    uint32_t period;

    if (window == DL_WWDT_WINDOW0) {
        period = (wwdt->WWDTCTL0 & WWDT_WWDTCTL0_WINDOW0_MASK);
    } else {
        period = ((wwdt->WWDTCTL0 & WWDT_WWDTCTL0_WINDOW1_MASK) >> 4);
    }

    return (DL_WWDT_WINDOW_PERIOD)(period);
}

__STATIC_INLINE DL_WWDT_TIMER_PERIOD DL_WWDT_getTimerPeriod(WWDT_Regs *wwdt)
{
    uint32_t period = (wwdt->WWDTCTL0 & WWDT_WWDTCTL0_PER_MASK);

    return (DL_WWDT_TIMER_PERIOD)(period);
}

__STATIC_INLINE DL_WWDT_CLOCK_DIVIDE DL_WWDT_getClockDivider(WWDT_Regs *wwdt)
{
    uint32_t clockDivider = (wwdt->WWDTCTL0 & WWDT_WWDTCTL0_CLKDIV_MASK);

    return (DL_WWDT_CLOCK_DIVIDE)(clockDivider);
}

__STATIC_INLINE void DL_WWDT_enableInterrupt(WWDT_Regs *wwdt)
{
    wwdt->CPU_INT.IMASK = WWDT_IMASK_INTTIM_SET;
}

__STATIC_INLINE void DL_WWDT_disableInterrupt(WWDT_Regs *wwdt)
{
    wwdt->CPU_INT.IMASK = WWDT_IMASK_INTTIM_CLR;
}

__STATIC_INLINE bool DL_WWDT_isInterruptEnabled(WWDT_Regs *wwdt)
{
    return ((wwdt->CPU_INT.IMASK & WWDT_IMASK_INTTIM_SET) ==
            WWDT_IMASK_INTTIM_SET);
}

__STATIC_INLINE bool DL_WWDT_getEnabledInterruptStatus(WWDT_Regs *wwdt)
{
    return ((wwdt->CPU_INT.MIS & WWDT_MIS_INTTIM_SET) == WWDT_MIS_INTTIM_SET);
}

__STATIC_INLINE uint32_t DL_WWDT_getRawInterruptStatus(WWDT_Regs *wwdt)
{
    return (wwdt->CPU_INT.RIS & WWDT_RIS_INTTIM_SET);
}

__STATIC_INLINE DL_WWDT_IIDX DL_WWDT_getPendingInterrupt(WWDT_Regs *wwdt)
{
    return (DL_WWDT_IIDX)(wwdt->CPU_INT.IIDX);
}

__STATIC_INLINE void DL_WWDT_clearInterruptStatus(WWDT_Regs *wwdt)
{
    wwdt->CPU_INT.ICLR = WWDT_ICLR_INTTIM_CLR;
}

#ifdef __cplusplus
}
#endif

#endif /* __MSPM0_HAS_WWDT__ */

#endif /* ti_dl_dl_wwdt__include */