Reply To: gps with pic 18f4520 Tweet › Forums › MPLAB XC8 Tutorial Discussions › gps with pic 18f4520 › Reply To: gps with pic 18f4520 20/08/2017 at 15:37 #2648 Bitahwa BinduKeymaster Hi. You are not specific with your problem. We have many USART tutorials on our website. What do you mean you can’t read? How are you reading? and What kind of data? Are you simulating or on hardware? are you sure your hardware is working correctly?