Energia code for low power mode in EK-TM4C123GXL

[nishanth 0]

Can anyone provide energia code for hibernate mode or sleep mode in tiva launchpad EK-TM4C123GXL

[Rei Vilo 695]

No need to post twice!

No need to use capital letters!

See Netiquette for Newbies.

[wg0z 0]

here's a bare-bones sketch, developed with Energia 17

 

typedef volatile unsigned long reg_t;
reg_t * pHIBCTL = (reg_t *)0x400fc010UL;  // hibernation control, see datasheet page 505

void setup()
{               
  // set the pin for the red LED as OUTPUT
  pinMode(RED_LED, OUTPUT);    
 
  // enable internal pullup for the pins connected to the pushbuttons
  pinMode(PF_0, INPUT_PULLUP); // SW2 and the /WAKE pin
  pinMode(PF_4, INPUT_PULLUP); // SW1 is connected to this pin
 
} // end setup()

void loop()
{
 
  // flash LED at 4Hz
  digitalWrite(RED_LED, (millis() % 250) < 125);
 
  // if sw1 is pressed, force LED off and enter hibernation
  if( LOW == digitalRead(PF_4))
  {
    digitalWrite(RED_LED, 0);
   
    // code to enter hibernation is per section 7.4.4 of the datasheet   
    // wait for MSB of the regiser to be set
    while (0 == (*pHIBCTL & 0x80000000UL));
    *pHIBCTL = 0x40;
    // wait for MSB of the regiser to be set
    while (0 == (*pHIBCTL & 0x80000000UL));
    *pHIBCTL = 0x52UL;
  }
 
} // end loop()

Edited April 28, 2017 by wg0z
better answer to OP