/* Put some of the peripheral in sleep mode */ void Chip_PMU_Sleep(LPC_PMU_T *pPMU, CHIP_PMU_MCUPOWER_T SleepMode) { if (SleepMode == PMU_MCU_DEEP_SLEEP) { Chip_PMU_DeepSleepState(pPMU); } else if (SleepMode == PMU_MCU_POWER_DOWN) { Chip_PMU_PowerDownState(pPMU); } else if (SleepMode == PMU_MCU_DEEP_PWRDOWN) { Chip_PMU_DeepPowerDownState(pPMU); } else { /* PMU_MCU_SLEEP */ Chip_PMU_SleepState(pPMU); } }
/* Handle interrupt from GPIO pin or GPIO pin mapped to PININT */ static void ProcessPowerState(CHIP_PMU_MCUPOWER_T crntPowerSetting) { volatile uint32_t tempTimeout; /* Output power status message, add separating space */ DEBUGSTR("\r\n"); /* Switch on current selected power setting */ switch (crntPowerSetting) { case PMU_MCU_SLEEP: default: DEBUGSTR("-----------------------------------------------------------------\r\n"); DEBUGSTR(" Entering SLEEP power setting\r\n"); DEBUGOUT(" (System will exit SLEEP in %d seconds)\r\n", POWER_CYCLE_SEC_DELAY); DEBUGSTR("-----------------------------------------------------------------\r\n\r\n"); /* Wait for all serial characters to be output */ DelayForSerialOutput(); /* Enter MCU Sleep mode */ Chip_PMU_SleepState(LPC_PMU); break; case PMU_MCU_DEEP_SLEEP: DEBUGSTR("-----------------------------------------------------------------\r\n"); DEBUGSTR(" Entering DEEP SLEEP power setting\r\n"); DEBUGOUT(" (System will exit DEEP SLEEP in %d seconds)\r\n", POWER_CYCLE_SEC_DELAY); DEBUGSTR("-----------------------------------------------------------------\r\n\r\n"); /* Wait for all serial characters to be output */ DelayForSerialOutput(); /* We should call Chip_SYSCTL_SetWakeup() to setup any peripherals we want to power back up on wakeup. For this example, we'll power back up the IRC, FLASH, the system oscillator, and the PLL */ Chip_SYSCTL_SetWakeup(~(SYSCTL_SLPWAKE_IRCOUT_PD | SYSCTL_SLPWAKE_IRC_PD | SYSCTL_SLPWAKE_FLASH_PD | SYSCTL_SLPWAKE_SYSOSC_PD | SYSCTL_SLPWAKE_SYSPLL_PD)); Chip_SYSCTL_EnableERP1PeriphWakeup(SYSCTL_ERP1_WAKEUP_RTCALARMINT); /* Enter MCU Deep Sleep mode */ Chip_PMU_DeepSleepState(LPC_PMU); break; case PMU_MCU_POWER_DOWN: DEBUGSTR("-----------------------------------------------------------------\r\n"); DEBUGSTR(" Entering POWER DOWN power setting\r\n"); DEBUGOUT(" (System will exit POWER DOWN in %d seconds)\r\n", POWER_CYCLE_SEC_DELAY); DEBUGSTR("-----------------------------------------------------------------\r\n\r\n"); /* Wait for all serial characters to be output */ DelayForSerialOutput(); /* We should call Chip_SYSCTL_SetWakeup() to setup any peripherals we want to power back up on wakeup. For this example, we'll power back up the IRC, FLASH, the system oscillator, and the PLL */ Chip_SYSCTL_SetWakeup(~(SYSCTL_SLPWAKE_IRCOUT_PD | SYSCTL_SLPWAKE_IRC_PD | SYSCTL_SLPWAKE_FLASH_PD | SYSCTL_SLPWAKE_SYSOSC_PD | SYSCTL_SLPWAKE_SYSPLL_PD)); Chip_SYSCTL_EnableERP1PeriphWakeup(SYSCTL_ERP1_WAKEUP_RTCALARMINT); /* Enter MCU Power down mode */ Chip_PMU_PowerDownState(LPC_PMU); break; case PMU_MCU_DEEP_PWRDOWN: DEBUGSTR("-----------------------------------------------------------------\r\n"); DEBUGSTR(" Entering DEEP POWER DOWN power setting\r\n"); DEBUGOUT(" (System will exit DEEP POWER DOWN in %d seconds)\r\n", POWER_CYCLE_SEC_DELAY); DEBUGSTR("-----------------------------------------------------------------\r\n\r\n"); /* Wait for all serial characters to be output */ DelayForSerialOutput(); /* Enable wakeup from deep power down mode due to RTC Alarm Match */ Chip_RTC_EnableWakeup(LPC_RTC, RTC_CTRL_ALARMDPD_EN); /* Enter MCU Deep Power down mode */ Chip_PMU_DeepPowerDownState(LPC_PMU); break; } }