C++ (Cpp) lp_ticker_set_interrupt Examples

Example #1

File: lp_ticker.c Project: ARMmbed/mbed-hal-nuc472

void lp_ticker_sleep_until(uint32_t now, uint32_t time)
{
    lp_ticker_set_interrupt(now, time);
    sleep_t sleep_obj;
    mbed_enter_sleep(&sleep_obj);
    mbed_exit_sleep(&sleep_obj);
}

Example #2

File: lp_ticker.c Project: Archcady/mbed-os

void lp_ticker_init(void)
{
    if (lp_ticker_inited) {
        return;
    }
    lp_ticker_inited = 1;

    counter_major = 0;
    cd_major_minor_clks = 0;
    cd_minor_clks = 0;
    wakeup_tick = (uint32_t) -1;

    // Reset module
    SYS_ResetModule(timer2_modinit.rsetidx);
    SYS_ResetModule(timer3_modinit.rsetidx);

    // Select IP clock source
    CLK_SetModuleClock(timer2_modinit.clkidx, timer2_modinit.clksrc, timer2_modinit.clkdiv);
    CLK_SetModuleClock(timer3_modinit.clkidx, timer3_modinit.clksrc, timer3_modinit.clkdiv);
    // Enable IP clock
    CLK_EnableModuleClock(timer2_modinit.clkidx);
    CLK_EnableModuleClock(timer3_modinit.clkidx);

    // Configure clock
    uint32_t clk_timer2 = TIMER_GetModuleClock((TIMER_T *) NU_MODBASE(timer2_modinit.modname));
    uint32_t prescale_timer2 = clk_timer2 / TMR2_CLK_PER_SEC - 1;
    MBED_ASSERT((prescale_timer2 != (uint32_t) -1) && prescale_timer2 <= 127);
    MBED_ASSERT((clk_timer2 % TMR2_CLK_PER_SEC) == 0);
    uint32_t cmp_timer2 = TMR2_CLK_PER_TMR2_INT;
    MBED_ASSERT(cmp_timer2 >= TMR_CMP_MIN && cmp_timer2 <= TMR_CMP_MAX);
    // Continuous mode
    // NOTE: TIMER_CTL_CNTDATEN_Msk exists in NUC472, but not in M451/M480. In M451/M480, TIMER_CNT is updated continuously by default.
    ((TIMER_T *) NU_MODBASE(timer2_modinit.modname))->CTL = TIMER_PERIODIC_MODE | prescale_timer2/* | TIMER_CTL_CNTDATEN_Msk*/;
    ((TIMER_T *) NU_MODBASE(timer2_modinit.modname))->CMP = cmp_timer2;

    // Set vector
    NVIC_SetVector(timer2_modinit.irq_n, (uint32_t) timer2_modinit.var);
    NVIC_SetVector(timer3_modinit.irq_n, (uint32_t) timer3_modinit.var);

    NVIC_EnableIRQ(timer2_modinit.irq_n);
    NVIC_EnableIRQ(timer3_modinit.irq_n);

    TIMER_EnableInt((TIMER_T *) NU_MODBASE(timer2_modinit.modname));
    TIMER_EnableWakeup((TIMER_T *) NU_MODBASE(timer2_modinit.modname));

    // NOTE: TIMER_Start() first and then lp_ticker_set_interrupt(); otherwise, we may get stuck in lp_ticker_read() because
    //       timer is not running.

    // Start timer
    TIMER_Start((TIMER_T *) NU_MODBASE(timer2_modinit.modname));

    // Schedule wakeup to match semantics of lp_ticker_get_compare_match()
    lp_ticker_set_interrupt(wakeup_tick);
}

Example #3

File: lp_ticker.c Project: 0xc0170/mbed-hal-ksdk-mcu

void lp_ticker_sleep_until(uint32_t now, uint32_t time)
{
    lp_ticker_set_interrupt(now, time);
    sleep_t sleep_obj;
    mbed_enter_sleep(&sleep_obj);
    // if LPTMR is running and we scheduled it, we know that RTC was fired while
    // we were sleeping
    if (LPTMR_HAL_IsEnabled(LPTMR0_BASE) && lp_ticker_lptmr_scheduled_flag) {
        __WFI();
    }
    mbed_exit_sleep(&sleep_obj);
}

Example #4

File: lp_ticker.c Project: ARMmbed/mbed-hal-nuc472

void lp_ticker_init(void)
{
    if (lp_ticker_inited) {
        return;
    }
    lp_ticker_inited = 1;
    
    counter_major = 0;
    cd_major_minor_ms = 0;
    cd_minor_ms = 0;
    wakeup_tick = TMR_CMP_MAX * MS_PER_TMR2_CLK / MS_PER_TICK;

    // Reset module
    SYS_ResetModule(timer2_modinit.rsetidx);
    SYS_ResetModule(timer3_modinit.rsetidx);
    
    // Select IP clock source
    CLK_SetModuleClock(timer2_modinit.clkidx, timer2_modinit.clksrc, timer2_modinit.clkdiv);
    CLK_SetModuleClock(timer3_modinit.clkidx, timer3_modinit.clksrc, timer3_modinit.clkdiv);
    // Enable IP clock
    CLK_EnableModuleClock(timer2_modinit.clkidx);
    CLK_EnableModuleClock(timer3_modinit.clkidx);

    // Configure clock
    uint32_t clk_timer2 = TIMER_GetModuleClock((TIMER_T *) NU_MODBASE(timer2_modinit.modname));
    uint32_t prescale_timer2 = clk_timer2 / TMR2_CLK_FREQ - 1;
    MBED_ASSERT((prescale_timer2 != (uint32_t) -1) && prescale_timer2 <= 127);
    uint32_t cmp_timer2 = MS_PER_TMR2_INT / MS_PER_TMR2_CLK;
    MBED_ASSERT(cmp_timer2 >= TMR_CMP_MIN && cmp_timer2 <= TMR_CMP_MAX);
    // Continuous mode
    ((TIMER_T *) NU_MODBASE(timer2_modinit.modname))->CTL = TIMER_PERIODIC_MODE | prescale_timer2 | TIMER_CTL_CNTDATEN_Msk;
    ((TIMER_T *) NU_MODBASE(timer2_modinit.modname))->CMP = cmp_timer2;
    
    // Set vector
    NVIC_SetVector(timer2_modinit.irq_n, (uint32_t) timer2_modinit.var);
    NVIC_SetVector(timer3_modinit.irq_n, (uint32_t) timer3_modinit.var);
    
    NVIC_EnableIRQ(timer2_modinit.irq_n);
    NVIC_EnableIRQ(timer3_modinit.irq_n);
    
    TIMER_EnableInt((TIMER_T *) NU_MODBASE(timer2_modinit.modname));
    TIMER_EnableWakeup((TIMER_T *) NU_MODBASE(timer2_modinit.modname));
    
    // Schedule wakeup to match semantics of lp_ticker_get_compare_match()
    lp_ticker_set_interrupt(lp_ticker_read(), wakeup_tick);
    
    // Start timer
    TIMER_Start((TIMER_T *) NU_MODBASE(timer2_modinit.modname));
}