#define WKUP_PADCONFIG     50

#define M4_PINMUX_VALUE(_rxActive, _pullType, _pull, _mux)  ((_rxActive << 18) | (_pullType << 17) | (_pull << 16) | (_mux << 0))

#define M4_WKUP_PADCONFIG   0x4301C000

#define M4_RX_ACTIVE        1
#define M4_RX_INACTIVE      0

#define M4_PULL_DOWN        0
#define M4_PULL_UP          1

#define M4_PULL_ENABLED     0
#define M4_PULL_DISABLED    1

#define M4_MUX_MODE_0   0x0
#define M4_MUX_MODE_1   0x1
#define M4_MUX_MODE_7   0x7   // ---> MUX MODE 7 to configure the PIN as GPIO

volatile uint32_t *LOCK7_KICK0  = (uint32_t *) 0x4301d008;
uint32_t * padconfig = (uint32_t *) M4_WKUP_PADCONFIG;
volatile uint32_t * dir01 = (uint32_t *) 0x42110010;
volatile uint32_t * outData01 = (uint32_t *) 0x42110014;


inside the function
{

    //unlock ctrl mmr
    LOCK7_KICK0[0] = 0x68EF3490;
    LOCK7_KICK0[1] = 0xD172BC5A;

    // configure GPIO pad, write to ctrl mmr
    padconfig[WKUP_PADCONFIG] = M4_PINMUX_VALUE(M4_RX_INACTIVE, M4_PULL_UP, M4_PULL_DISABLED, M4_MUX_MODE_7);

    // set as output
    *dir01 &= 0xffff0000; 
	
    // drive low
    *outData01 &= 0xffff0000; 

    //Delay (You could use your own way to add delay)
    appLogWaitMsecs(1000); 
 
    // drive high
    *outData01 |= 0x0000ffff; 

}