From owner-freebsd-embedded@FreeBSD.ORG Wed Jan 21 17:57:14 2015 Return-Path: Delivered-To: freebsd-embedded@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 4694C2DE for ; Wed, 21 Jan 2015 17:57:14 +0000 (UTC) Received: from mail-ob0-x232.google.com (mail-ob0-x232.google.com [IPv6:2607:f8b0:4003:c01::232]) (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 0B3ED620 for ; Wed, 21 Jan 2015 17:57:14 +0000 (UTC) Received: by mail-ob0-f178.google.com with SMTP id nt9so10041118obb.9 for ; Wed, 21 Jan 2015 09:57:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=EDDt21jsT4y3qT12kdvkOqTVRbjVkjZWNMxbxTTWgUQ=; b=Hwb4KV/bn5MyHu6SVpGuXAdpCjavPTrooqMWjfo8n/m8avO4HsB13fUA1EHC9D0tkS yJYLyBzfjNTXSDX7iGdT2Q/FhUcuuFuDvkurx0tddxcgkbVXwDmb1wnUkbhz2Qrp3p83 BFpayI1tISvwEwGFK6UVA8zk+8QQaxYHJXVIdi/UQbe3ZeMBbLQjMTDZ/p008Lp+Gx5P ayxTFcd0nL+bxv/wekGIW5+L6lfLBcXXBPgeaHASYn3zdA3oeLdqrRc0+CBJxwp+j4h2 wEaKbs9eFnLG82R0GgI53+z+pkMLILaB5XRvO96HAIy+29JExjXi6BkKAxlPnZH6nuzB w5Eg== MIME-Version: 1.0 X-Received: by 10.60.63.244 with SMTP id j20mr25725309oes.5.1421863033296; Wed, 21 Jan 2015 09:57:13 -0800 (PST) Received: by 10.76.167.34 with HTTP; Wed, 21 Jan 2015 09:57:13 -0800 (PST) Date: Wed, 21 Jan 2015 09:57:13 -0800 Message-ID: Subject: RBPi Doesn't Boot With GPS GPIO Board Attached From: Reza Nikoopour To: freebsd-embedded@freebsd.org Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.18-1 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 17:57:14 -0000 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