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Power down on LPC11u6x

Question asked by Arturas Jonkus on Oct 8, 2018
Latest reply on Oct 16, 2018 by jeremyzhou

I am doing step-by-step setting-up of putting LPC11u67 device to power-down. However, even after doing everything exactly as I am told by manual, device can't get back from power-down. Maybe my code could provide some things that I understood in a wrong way.

Chip_SYSCTL_EnableStartPin(2); // Getting PIN INT to wake up device

Chip_SYSCTL_EnablePeriphWakeup((1 << 20) | (1 << 12)); // GINT0 interrupt wake-up | RTC wake-up


// Not needing BOD and WDT on sleep



// Switching to IRC as main clock

/* Wait for at least 580uS for osc to stabilize */
for (i = 0; i < 2500; i++) {}



// Turn on IRC, Flash, SysOsc and PLL on wakeup

Chip_SYSCTL_SetWakeup(~(SYSCTL_SLPWAKE_IRCOUT_PD | SYSCTL_SLPWAKE_IRC_PD |                                                         SYSCTL_SLPWAKE_FLASH_PD | SYSCTL_SLPWAKE_SYSOSC_PD |                                                                SYSCTL_SLPWAKE_SYSPLL_PD));

Chip_RTC_SetAlarm(LPC_RTC, Settings.nextHeartbeatTimeStamp);


// Go to power down



// Setup device from beginning - power on crystal and setup PLL