Date: Wed, 21 Jan 2015 14:04:53 -0800 From: Reza Nikoopour <rnikoopour@gmail.com> To: Adrian Chadd <adrian@freebsd.org> Cc: "freebsd-embedded@freebsd.org" <freebsd-embedded@freebsd.org> Subject: Re: RBPi Doesn't Boot With GPS GPIO Board Attached Message-ID: <CAKesZq2r8SrPb4QMREzLxLeRvuQDp_bX6%2BCS5aNmM79vxWjaGA@mail.gmail.com> In-Reply-To: <CAJ-VmomFNfEt9f-=v7mm2Gz=hw1BQUVBk2ppjRnWhwuXVXTzxQ@mail.gmail.com> References: <CAKesZq3ZB8j-MmNbCUoB2irdVyztuEPaVy-X95WqB9WQd3uZTg@mail.gmail.com> <CAJ-VmomFNfEt9f-=v7mm2Gz=hw1BQUVBk2ppjRnWhwuXVXTzxQ@mail.gmail.com>
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Adrian, Thank you for your reply. This is my first project using an embedded system like this, so I'm not sure how to check if the GPS add-on is speaking to the Pi. However, that would make sense because during the boot of Raspbian, it occasionally makes a selection from the Rasbpian setup menu without me touching the keyboard. Reza On Wed, Jan 21, 2015 at 11:16 AM, Adrian Chadd <adrian@freebsd.org> wrote: > Hi, > > Does the GPS add-on speak to the raspberry PI serial console? If so, > it's likely outputting a whole lot of GPS data via serial, and the > boot loaders for both operating systems are interpreting that as valid > input. > > > > -a > > > On 21 January 2015 at 09:57, Reza Nikoopour <rnikoopour@gmail.com> wrote: > > Hello, > > > > I'm currently building an NTP server using the following set up: > > > > Raspberry Pi B+ < > > > http://www.amazon.com/gp/product/B00LPESRUK/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1 > >> > > Raspberry PI GPS Add-on < > > http://imall.iteadstudio.com/raspberry-pi-gps-add-on.html > > > FreeBSD 10.1 built with CrochetBSD > > > > I was able to build an img with Crochet and get the Pi to boot into a > > shell. However, whenever I booting the Pi with the GPS board attached it > > will not boot. > > > > When I plug in the GPS Add-on into the GPIO connector, my Pi fails to > boot > > before starting the kernel. It boots to the point where it says "Press > > enter to prevent auto boot" and then the letter 'L' shows up and starts > > erasing text from the screen. > > > > I was initially using a 1.5A power supply. It was suggested to me to try > > using a stronger power supply so I tried a 2.1A power supply, but that > > didn't work either. Using the 2.1A power supply resulted in the same > boot > > problem described above. > > > > Next I tried using Raspbian to boot the Pi, but a similar problem > > occurred. The Pi boots without the GPS board attached. When the GPS > board > > is attached, it boots kernel and when the screen to start Raspbian > Software > > Configuration then the following message prints to the screen > indefinitely: > > > > SysRq : HELP : loglevel(0-9) reboot(b) crash(c) terminate-all-tasks(e) > > memory-full-oom-kill(f) kill-all-tasks(i) thaw-filesystem(j) sak(k) > > show-memory-usage(m) nice-all-RT-tasks(n) poweroff(o) show-registers(p) > > show-all-timers(q) unraw(r) sync(s) show-task-states(t) unmount(u) > > show-blocked-test(w) > > > > Could I get some guidance with fixing this problem? > > > > Thanks! > > Reza > > _______________________________________________ > > freebsd-embedded@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-embedded > > To unsubscribe, send any mail to " > freebsd-embedded-unsubscribe@freebsd.org" >
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