microcontroller c code for gps
hello eye and friends,
Let´s explain a little better, I need the PPS signal to be active to make a time base. In this equipment the time base is not for usig in a PC but in a 8051 ucontroller. I´ve bought a garmin gps35lvc gps but the PPS signal is not readly available from the corresponding pin. I´ve searched in the internet and found out that some gps do not have their PPS signal available from factory, this way a $PGRMC,,,,,,,,,,,,2<CR><LF> command must be sent to the module to enable the dam PPS pin. As long as the module receives a correct command it echoes back the same command. I´ve been using hyperterminal to access and send commands to the gps and it works well to baudrate select and all other commands, but the PPS is not working. I dont know whether the module is faulty or I´ve to send some more commands to enable the PPS.
Does anyone here have already worked on this gps using the PPS signal??? Any tip to enable this pin?? I´ve tried the garmin support but they simply dont repply my messages.
regards,
2000