From: David F. <dav...@ya...> - 2004-08-19 02:04:11
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Kim, are you using a waysmall? If not what RS232 chip are you powering by battery? David. Kim Hendrikse <ki...@ki...> wrote: I've made some progress on my flakey rs-232 problem. In my case, my gumstix worked fine in one harness, but my new one had the problems. The pressure connector looked fine and there were no shorts in it. I've made a new harness with a really short cable to it and now it works fine. The other one had about 20cm of cable and another board inbetween to rearrange the connections (Because of a mistake). Apparently that's too much length for the raw uart signals. I'm running the new one off 3.7V directly from the battery. It also provides access to the jtag pins so later on I should be able to see whether my home built jtag cable works or not. - Kim ------------------------------------------------------- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 _______________________________________________ gumstix-users mailing list gum...@li... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
From: Kim H. <ki...@ki...> - 2004-08-19 09:11:23
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> Kim, are you using a waysmall? If not what RS232 chip are you powering by > battery? > David. I'm not using the waysmall. I'm using a MAX3233 chip. - Kim > Kim Hendrikse <ki...@ki...> wrote: > I've made some progress on my flakey rs-232 problem. In my case, my gumstix > worked fine in one harness, but my new one had the problems. The pressure > connector looked fine and there were no shorts in it. I've made a new > harness with a really short cable to it and now it works fine. The > other one had about 20cm of cable and another board inbetween to rearrange > the connections (Because of a mistake). Apparently that's too much length > for the raw uart signals. I'm running the new one off 3.7V directly > from the battery. It also provides access to the jtag pins so later on I > should be able to see whether my home built jtag cable works or not. > > - Kim > > > ------------------------------------------------------- > SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media > 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 > Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. > http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 > _______________________________________________ > gumstix-users mailing list > gum...@li... > https://lists.sourceforge.net/lists/listinfo/gumstix-users |
From: David F. <dav...@ya...> - 2004-08-19 23:02:22
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Kim, I use the 3233 on a board also. The guaranteed spec I think is 3.6V, the absolute maximum is 4V but I wouldn't operate there. What are you doing with forceon? David. Kim Hendrikse <ki...@ki...> wrote: > Kim, are you using a waysmall? If not what RS232 chip are you powering by > battery? > David. I'm not using the waysmall. I'm using a MAX3233 chip. - Kim > Kim Hendrikse wrote: > I've made some progress on my flakey rs-232 problem. In my case, my gumstix > worked fine in one harness, but my new one had the problems. The pressure > connector looked fine and there were no shorts in it. I've made a new > harness with a really short cable to it and now it works fine. The > other one had about 20cm of cable and another board inbetween to rearrange > the connections (Because of a mistake). Apparently that's too much length > for the raw uart signals. I'm running the new one off 3.7V directly > from the battery. It also provides access to the jtag pins so later on I > should be able to see whether my home built jtag cable works or not. > > - Kim > > > ------------------------------------------------------- > SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media > 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 > Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. > http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 > _______________________________________________ > gumstix-users mailing list > gum...@li... > https://lists.sourceforge.net/lists/listinfo/gumstix-users ------------------------------------------------------- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 _______________________________________________ gumstix-users mailing list gum...@li... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
From: Kim H. <ki...@ki...> - 2004-08-19 23:19:40
Attachments:
schem.png
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> Kim, I use the 3233 on a board also. The guaranteed spec I think is 3.6V, the > absolute maximum is 4V but I wouldn't operate there. What are you doing with > forceon? Shit! I didn't notice that low upper limit on it :( I'd better attach it to the ldo then. Hmmm.. On my other board that doesn't work it is running on 3.3V. But that board doesn't work and another I made does. However, I think this board doesn't work because it has quite long ribbon cables running to it with the 3.3V signals. The other board runs straight off the li-poly battery so I assumed the higher voltage was good for it. But I see on the spec sheets now, indeed, it's not supposed to. Perhaps I better remake my new board and run it on 3.3V after all. I've grounded force on. The attached little circuit is working for me. But... you're right. I had better run it from the 3.3V. - Kim |
From: David F. <dav...@ya...> - 2004-08-20 01:29:48
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Kim, You may want to try forceon, at least until you know everything else is working. I had some trouble with the autoshutdown in some conditions making junk of my data. I didn't need the power savings. David. Kim Hendrikse <ki...@ki...> wrote: > Kim, I use the 3233 on a board also. The guaranteed spec I think is 3.6V, the > absolute maximum is 4V but I wouldn't operate there. What are you doing with > forceon? Shit! I didn't notice that low upper limit on it :( I'd better attach it to the ldo then. Hmmm.. On my other board that doesn't work it is running on 3.3V. But that board doesn't work and another I made does. However, I think this board doesn't work because it has quite long ribbon cables running to it with the 3.3V signals. The other board runs straight off the li-poly battery so I assumed the higher voltage was good for it. But I see on the spec sheets now, indeed, it's not supposed to. Perhaps I better remake my new board and run it on 3.3V after all. I've grounded force on. The attached little circuit is working for me. But... you're right. I had better run it from the 3.3V. - Kim > ATTACHMENT part 2 image/png |
From: Bouwens / M. <bou...@bl...> - 2004-08-17 21:28:25
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Hi, David mentioned the new personal Hyperterminal sw - it crashes on windows xp home sp2. Not so good. There's also a newer version of the widcomm bluetooth stuff... Re-testing the whole thing - it looks a bit better. The gumstix get's more succesfull ip leases. Timing issue? Haven't got the configuration for the RFCOMM devices. Has anyone a config for those devices? There are a couple of patches for bluetooth. But for kernel 2.6.8 ... Robert > -----Original Message----- > From: gum...@li... > [mailto:gum...@li...]On Behalf Of Craig > Hughes > Sent: Dienstag, 17. August 2004 00:45 > To: gum...@li... > Subject: Re: [Gumstix-users] RS-232 comms is flakey > > > I have. One key thing about serial ports via bluetooth with the 'stix > is that I was having trouble getting the getty on the bluetooth serial > port on the gumstix to wait forever for a connection -- it seems to > just exit after about 10 seconds if no connection attempt is made. So > I have a really ugly hacky loop in a shell script which keeps > restarting the getty when it dies. The result is that when you try and > connect to the bluetooth serial port, you'll get a delay of between 0 > and 10 seconds or so (sometime longer -- haven't delved into it) before > the login prompt appears. Should work OK though after that. > > C > > On Aug 16, 2004, at 5:08 PM, Bouwens / Mehl wrote: > > > Has soemone successfull spawned a ternimal sesion using bluetooth? > > Still reading and haven't found... > > > > ------------------------------------------------------- > SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media > 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 > Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. > http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 > _______________________________________________ > gumstix-users mailing list > gum...@li... > https://lists.sourceforge.net/lists/listinfo/gumstix-users |
From: David F. <dav...@ya...> - 2004-08-17 21:48:40
|
I have it installed on four XP pro machines, latest SP and it works great! David. Bouwens / Mehl <bou...@bl...> wrote: Hi, David mentioned the new personal Hyperterminal sw - it crashes on windows xp home sp2. Not so good. There's also a newer version of the widcomm bluetooth stuff... Re-testing the whole thing - it looks a bit better. The gumstix get's more succesfull ip leases. Timing issue? Haven't got the configuration for the RFCOMM devices. Has anyone a config for those devices? There are a couple of patches for bluetooth. But for kernel 2.6.8 ... Robert > -----Original Message----- > From: gum...@li... > [mailto:gum...@li...]On Behalf Of Craig > Hughes > Sent: Dienstag, 17. August 2004 00:45 > To: gum...@li... > Subject: Re: [Gumstix-users] RS-232 comms is flakey > > > I have. One key thing about serial ports via bluetooth with the 'stix > is that I was having trouble getting the getty on the bluetooth serial > port on the gumstix to wait forever for a connection -- it seems to > just exit after about 10 seconds if no connection attempt is made. So > I have a really ugly hacky loop in a shell script which keeps > restarting the getty when it dies. The result is that when you try and > connect to the bluetooth serial port, you'll get a delay of between 0 > and 10 seconds or so (sometime longer -- haven't delved into it) before > the login prompt appears. Should work OK though after that. > > C > > On Aug 16, 2004, at 5:08 PM, Bouwens / Mehl wrote: > > > Has soemone successfull spawned a ternimal sesion using bluetooth? > > Still reading and haven't found... > > > > ------------------------------------------------------- > SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media > 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 > Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. > http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 > _______________________________________________ > gumstix-users mailing list > gum...@li... > https://lists.sourceforge.net/lists/listinfo/gumstix-users ------------------------------------------------------- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 _______________________________________________ gumstix-users mailing list gum...@li... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
From: David F. <dav...@ya...> - 2004-08-17 22:48:05
|
Be sure to run the HyperterminalPrivate Edition shortcut not the old Hyperterminal one. David Farrell <dav...@ya...> wrote: I have it installed on four XP pro machines, latest SP and it works great! David. Bouwens / Mehl <bou...@bl...> wrote: Hi, David mentioned the new personal Hyperterminal sw - it crashes on windows xp home sp2. Not so good. There's also a newer version of the widcomm bluetooth stuff... Re-testing the whole thing - it looks a bit better. The gumstix get's more succesfull ip leases. Timing issue? Haven't got the configuration for the RFCOMM devices. Has anyone a config for those devices? There are a couple of patches for bluetooth. But for kernel 2.6.8 ... Robert > -----Original Message----- > From: gum...@li... > [mailto:gum...@li...]On Behalf Of Craig > Hughes > Sent: Dienstag, 17. August 2004 00:45 > To: gum...@li... > Subject: Re: [Gumstix-users] RS-232 comms is flakey > > > I have. One key thing about serial ports via bluetooth with the 'stix > is that I was having trouble getting the getty on the bluetooth serial > port on the gumstix to wait forever for a connection -- it seems to > just exit after about 10 seconds if no connection attempt is made. So > I have a really ugly hacky loop in a shell script which keeps > restarting the getty when it dies. The result is that when you try and > connect to the bluetooth serial port, you'll get a delay of between 0 > and 10 seconds or so (sometime longer -- haven't delved into it) before > the login prompt appears. Should work OK though after that. > > C > > On Aug 16, 2004, at 5:08 PM, Bouwens / Mehl wrote: > > > Has soemone successfull spawned a ternimal sesion using bluetooth? > > Still reading and haven't found... > > > > ------------------------------------------------------- > SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media > 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 > Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. > http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 > _______________________________________________ > gumstix-users mailing list > gum...@li... > https://lists.sourceforge.net/lists/listinfo/gumstix-users ------------------------------------------------------- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 _______________________________________________ gumstix-users mailing list gum...@li... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
From: Kim H. <ki...@ki...> - 2004-08-16 14:02:46
|
Nup! This doesn't help the problem. In any case, I would imagine that a program that can't keep up would loose rather than corrupt packets. But more to the point, it works in another harness. I think that it most likely is the pressure connector, but I don't have any spares at the moment to replace it with and frankly it looks totally fine. - Kim > I mentioned previously to go to Hilgraeve website and download > their free Hyperterminal Private Edition. It has a couple extra > features (clear history buffer). It also is very reliable for high > speed. See the Help in stock Hyperterminal for Hilgraeve info. > David. |
From: Kim H. <ki...@ki...> - 2004-08-16 18:34:50
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Actually, I may be onto something actually. On the harness that my stick does work on, it's running the max3233 on the battery voltage, which is 3.7-4.2V. On my new harness I used a 3.3V LDO regulator. I notice that the LDO regulator on the waysmall is 5V, despite the adapter voltage being about 4.5V. I'll try replacing that sucker and see what happens. - Kim > I was wondering if anyone has had a situation whereby the gumstix boots but > the rs-232 comms is not quite right. By that I mean that most of the characters > are correct, but there are a lot of junk characters in the stream as well. I've > played around with the registration of the pressure connector quite a lot (Old > gumstix) and it doesn't help. In a different harness I have it works fine btw. > The one that is giving problems does have about 20cm of ribbon cable before it > hits the max 3233 chip (which runs at 3.3V), I'm not sure if that has an > influence. > > - Kim |