GPS was Re: Home-Brew IR port. Was - Please Ignore RS232 message. The subject should read IrDA port... Sorry

pHilipp Zabel philipp.zabel at
Sat May 12 14:34:41 CEST 2007

On 5/11/07, Joe Pfeiffer <jjpfeifferjr at> wrote:
> Just thought of something -- a little while ago, somebody was trying
> to "tickle" the GPS to see what it did (with no luck).  Were you also
> fiddling with the handshake lines as you did it?  If the handshaking
> is actually being used, then not asserting some lines might explain
> why it didn't answer....

On the GTA01Bv4 with the shipped kernel I do get answers from the GPS
with the small hhtest program at

But not on the GTA01Bv3. As on the shipped P1 kernel "power_core_1v5"
was renamed to "power_vdd_core_1v5", I _assume_ that they fixed a
problem in the kernel but it is not in the svn sources yet
(gta01-power_control.patch still has power_core_1v5).


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