If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
__attribute__((optnone)) Public void CtrlHibernateInit(void)
{
/* Enable the the Hibernate module and wait for it to be ready */
SysCtlPeripheralEnable(SYSCTL_PERIPH_HIBERNATE);
/* If first start up, enable hibernate
* and RTC.
*/
if (HibernateIsActive() == FALSE) {
HibernateEnableExpClk((uint32)CPU_FREQUENCY);
HibernateWakeSet(HIBERNATE_WAKE_PIN | HIBERNATE_WAKE_RTC);
HibernateRTCEnable();
HibernateCounterMode(HIBERNATE_COUNTER_RTC);
HibernateRTCSet(0);
}
}
__attribute__((optnone, noreturn)) Public void CtrlHibernateDoHibernate(void)
{
/*
* Read and clear any status bits that might have been set since
* last clearing them.
*/
uint32 hibIntStatus = HibernateIntStatus(FALSE);
HibernateIntClear(hibIntStatus);
// wake up each 30 seconds
HibernateRTCMatchSet(0, HibernateRTCGet()+30);
HibernateRequest();
for (;;) {
/* Spin for a while for hibernate to activate. */
__NOP();
}
}
/* DriverLib Includes */
#include <ti/devices/msp432e4/driverlib/driverlib.h>
/* Standard Includes */
#include <stdint.h>
#include <stdbool.h>
void delay(uint32_t delay_ms) // assumes 1 ms tick.
{
uint32_t start = 0;
while (start < delay_ms) {
start++;// nop
}
}
int main(void)
{
uint32_t systemClock;
uint32_t hibIntStatusRaw = 0u;
/* Configure the system clock for 120 MHz */
systemClock = MAP_SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ | SYSCTL_OSC_MAIN |
SYSCTL_USE_PLL | SYSCTL_CFG_VCO_480),
120000000);
/* Enable the clock to the GPIO Port N and wait for it to be ready */
MAP_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPION);
while(!(MAP_SysCtlPeripheralReady(SYSCTL_PERIPH_GPION)))
{
}
/* Configure the GPIO PN0-PN1 as output and switch it LED D2 ON */
MAP_GPIOPinTypeGPIOOutput(GPIO_PORTN_BASE, (GPIO_PIN_0 | GPIO_PIN_1));
MAP_GPIOPinWrite(GPIO_PORTN_BASE, (GPIO_PIN_1), 0);
delay(12000000);
/* Enable the clock to the Hibernate and wait for it to be ready */
MAP_SysCtlPeripheralEnable(SYSCTL_PERIPH_HIBERNATE);
while(!(MAP_SysCtlPeripheralReady(SYSCTL_PERIPH_HIBERNATE)))
{
}
/* Configure Hibernate for VDD3ON Mode with Pin Wakeup if Hibernate
* module has not been configured */
if(!MAP_HibernateIsActive())
{
MAP_HibernateEnableExpClk(systemClock);
MAP_HibernateWakeSet(HIBERNATE_WAKE_RTC | HIBERNATE_WAKE_PIN);
MAP_HibernateRTCSet(0);
MAP_HibernateRTCEnable();
}
else {
hibIntStatusRaw = MAP_HibernateIntStatus(true);
MAP_HibernateIntClear(hibIntStatusRaw);
if ((hibIntStatusRaw & (HIBERNATE_INT_PIN_WAKE | HIBERNATE_INT_RTC_MATCH_0)) != 0u) {
MAP_GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_1, GPIO_PIN_1);
delay(12000000);
}
}
MAP_HibernateRTCMatchSet(0, (MAP_HibernateRTCGet()+5));
MAP_HibernateRequest();
while(1)
{
}
}
