On Thu 2018-05-03 11:35:48, H. Nikolaus Schaller wrote: > GTA04 has a W2SG0004 module connected to UART2 of the OMAP3 > processor. A GPIO can pulse the on/off toggle switch. > > Note that there is no WAKEUP output from the W2SG0004, > hence we can't use the generic SirfStar binding. > > The VSIM regulator is used to power on/off the LNA of an > external active GPS antenna so that a driver can turn the > LNA off if GPS is not needed to save battery energy. This reads as if you did low->high->low to turn GPS on, then low->high->low to turn GPS off again. Is that correct? -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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