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Re: [Gumstix-users] uisp problem
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From: Michal 'L. Z. <la...@fa...> - 2006-11-13 22:20:08
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Hi Dave, Regarding the U$62... Pin 1 (upper left) has 3.2 V, Pin 2 - GPIO70 - (next on the right) has 3 V. So.. it seems to be ok.. I really could not understand why I had problems before to measure this voltages, maybe some connections between elements and PCB are not good, but I have checked visually everything and it looks ok. Ok... But still.. it resets when I do power off, and cannot program atmel using uisp. Hmm... I think we are running out of ideas;) And what do you think about this reseting problem? Thanks, Michal Zygmunt -----Original Message----- From: gum...@li... [mailto:gum...@li...] On Behalf Of Michal 'LaHcIm' Zygmunt Sent: Monday, November 13, 2006 11:02 PM To: 'General mailing list for gumstix users.' Subject: Re: [Gumstix-users] uisp problem Ok.. so I think that we have very interesting problem. I checked all the voltages on the input and output of the voltage regulators... and... seems to be OK. VCC5 voltage regulator: - green (input) - 5V - red (output) - 5V AVCC voltage regulator: - green (input) - 5V - red (output) - 5V V_BATT voltage regulator: - green (input) - 5V - red (output) - 5V VCC voltage regulator: - green (input) - 5V - red (output) - 3.2 V Now I will check voltage regulator enables pins and let you know... I will also do the same test after some time when robostix will be still plugged in and I will check if there will be still voltage. So voltage regulators seems to be OK. Generally. -----Original Message----- From: gum...@li... [mailto:gum...@li...] On Behalf Of Michal 'LaHcIm' Zygmunt Sent: Monday, November 13, 2006 10:32 PM To: 'General mailing list for gumstix users.' Subject: Re: [Gumstix-users] uisp problem P.S. The green LED is always on, so I assume that the V_ROBOBATT is always present. -----Original Message----- From: gum...@li... [mailto:gum...@li...] On Behalf Of Michal 'LaHcIm' Zygmunt Sent: Monday, November 13, 2006 10:30 PM To: 'General mailing list for gumstix users.' Subject: Re: [Gumstix-users] uisp problem Hi Dave... About the voltages... Just after plugin in to the power.. voltages (VCC5) looked ok, and I also had 5V on AVCC and 5V on V_BATT and about 3V on VCC (right red dot). But just after this.. I started to checking 1.0uF on the left of the PCB (this red dot).. and first thing I noticed was that you have horizontal capacitors and I have vertical... and.. there was no voltage.. completely! Than I checked again the VCC5 line, that had voltage before and it disappeared! And was 0V there... It looks very strange... So I cannot provide you the fully consistent results. Any other ideas? It looks like after some (short) time, the voltage on VCC5 becomes 0V, and in some other places too. -----Original Message----- From: gum...@li... [mailto:gum...@li...] On Behalf Of Dave Hylands Sent: Monday, November 13, 2006 9:55 PM To: General mailing list for gumstix users. Subject: Re: [Gumstix-users] uisp problem Hi Michal, > If it doesn't reset the second time, try commenting out the lines in > the script that manipulate gpio70 & 72 and try again. You missed this step. Obviously, the fact that the voltage regulators aren't working is related to the problem, but I don't think that its the whole problem. -- Dave Hylands Vancouver, BC, Canada http://www.DaveHylands.com/ ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? 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Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ gumstix-users mailing list gum...@li... https://lists.sourceforge.net/lists/listinfo/gumstix-users ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ gumstix-users mailing list gum...@li... https://lists.sourceforge.net/lists/listinfo/gumstix-users ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ gumstix-users mailing list gum...@li... https://lists.sourceforge.net/lists/listinfo/gumstix-users |