I am using Fastrax UP501 GPS receiver module which is connected to the Fez Panda II board over the UART. I am sending the GPS commands from the microcontroller based board to GPS receiver using serial communication but there is no response from the GPS for the sent command. This same board uses some other UART modules and it works fine with same kind of serial communication.
I tried to send following test command
$PMTK000*32\r\n
and was expecting following acknowledge string
$PMTK001,000,3*32\r\n
But this GPS module do not show any data which is received on microcontroller board through that serial communication. Can anyone help to resolve this issue. Is there anything I am missing in sending the command.