// This example explain how to turn on keypad LED(KPLED) power.
   VM_DCL_HANDLE handle;
   vm_dcl_pmu_control_kpled_set_enable_t val;

   handle = vm_dcl_open(VM_DCL_PMU, 0);

   val.enable = VM_TRUE;    // enable ,  VM_FALSE : disable

   vm_dcl_control(handle, VM_PMU_CTRL_KPLED_SET_ENABLE, (void *)&val);
   vm_dcl_close(handle);