From owner-freebsd-embedded@FreeBSD.ORG Wed Jan 21 22:25:09 2015 Return-Path: Delivered-To: freebsd-embedded@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 9E93F591; Wed, 21 Jan 2015 22:25:09 +0000 (UTC) Received: from mail-oi0-x235.google.com (mail-oi0-x235.google.com [IPv6:2607:f8b0:4003:c06::235]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 5EF9B8D7; Wed, 21 Jan 2015 22:25:09 +0000 (UTC) Received: by mail-oi0-f53.google.com with SMTP id i138so9326303oig.12; Wed, 21 Jan 2015 14:25:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=HdmAcU5duzZb7i6Ckz1u4FOQRka4ESQeUD0wGJ8hVAw=; b=UgerZN7ZS4DMxGDTsFhvYXJOqfLVr1f1xHDBCaxeaUFjXONzS/EfTItVeImhWrg8VC NAvtEjXv+wdsCHJGEhEfvQ+OGRixIq/RCT5UzNg8gc2G9mvOnVxYrYOPkDOs9Q3lo5Ua i4931cDrL/wrm7UtZEad1m/ZSbTa9yMsFv/oK4mJKCOlKPDClqSAkughVyFaj7VE3n/W DNO/5SbrcFj+YtJtH+Bxc3sCjdF8xSEQRdDGSWbVmg5K1sFIMzKvc0p2waI0WuUXRMLs m6UKcE6Zk+8Qu1NpWWHCegt+3CkAdP9GbrA2k4NOTMjhFSr6YWECiJz56VxUMLOL0gTq Q2Vg== MIME-Version: 1.0 X-Received: by 10.182.94.133 with SMTP id dc5mr26594410obb.32.1421879108677; Wed, 21 Jan 2015 14:25:08 -0800 (PST) Received: by 10.76.167.34 with HTTP; Wed, 21 Jan 2015 14:25:08 -0800 (PST) In-Reply-To: References: Date: Wed, 21 Jan 2015 14:25:08 -0800 Message-ID: Subject: Re: RBPi Doesn't Boot With GPS GPIO Board Attached From: Reza Nikoopour To: Adrian Chadd Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.18-1 Cc: "freebsd-embedded@freebsd.org" X-BeenThere: freebsd-embedded@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Dedicated and Embedded Systems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 21 Jan 2015 22:25:09 -0000 Adrian, It seems like you were right about the serial port taking in the GPS output as valid input. I disabled the serial port login for Raspbian and I was able to boot into a shell with the GPS board attached. Reza On Wed, Jan 21, 2015 at 11:16 AM, Adrian Chadd 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 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" >