[Paparazzi-devel] lisa has a different GPS interface?

[Marvin Wang]

hi all,

i have discovered that lisa is hard to get GPS 3Dfix than twog and umarim . 
i have tested few times outdoor, with my 5H GPS. the lisa/m takes about 2~5min to get 3Dfix, however, towg and umarim takes less than 30s every time.  twog and umarim even can get fix indoor  (by the window).

i also find that when the ap get fix lisa has a less drift and the umarim has much more drift

so i wonder that if STM32 and LPC has different GPS interface?  and if so,  what can i do to get the lisa gps  faster? (waiting gps in the field is not fun at all)

any help is appreciate

Marvini