. SysTick timer event interval reduced to 1ms from 10ms
. Stepper controller now supports FULL_STEP and HALF_STEP modes for H-bridge drivers
. Added support for A4988 driver  based on DIRECTION/STEP input control
. Adds 48Mhz clock support using System PLL implemented in SYSPLL.c and SYSPLL.h
. LPC1114.h and Make file modified to include support for PLL
. text_SYSPLL.c is used for testing purposes