Gpt Timer as output port

Hi,

How we can use gpt timer as  a blinking LED on output port in different speed. I have test but its blinking speed only depend on "Period value" . Can anyone help me out this.

/* HAL-only entry function */

#define COUNTS_PER_MILLISECOND (120E6/1000 )
#include "hal_data.h"
void hal_entry(void)
{
g_timer0.p_api->open(g_timer0.p_ctrl,g_timer0.p_cfg);
g_timer0.p_api->start( g_timer0.p_ctrl);

timer_size_t counts = 0;
while (1)
{
// Get current counts
g_timer0.p_api->counterGet(g_timer0.p_ctrl, &counts);

// Check if 500ms has elapsed => This should be a helper function at some point
// Need to look if the PBCLK settings are stored in a define somewhere...
if (counts > 1000
*COUNTS_PER_MILLISECOND)
{

// Reset the timer to 0
g_timer0.p_api->reset(g_timer0.p_ctrl);
break;
}
}

Regards

Wasim