computer not communicating
Hello Forum
I have replaced the computer I use to work with the Stamp. This new one has never been connected to a Stamp or uController before. I had to install a second Com port ( plug into mother board at connector marked "Com2 and mount connector) to connect the serial cable (which has been used with Stamps before) My problem is that when trying to "Identify" the Stamp, I continually get NO and NO under Loopback and Echo. I tried the cable and stamp with my laptop and it works fine so the cable/Stamp is OK, plus, I am using a Stamp Stack (pins 6&7 are bridged already) so the cable is not the problem.
I have not done much with either computers internally and am rather new to Stamps, although I have played with it on 2 other computers and not had this problem before. The old computer was a·486 and this one is a PII.
Any suggestions?
Thanks
Shawn
I have replaced the computer I use to work with the Stamp. This new one has never been connected to a Stamp or uController before. I had to install a second Com port ( plug into mother board at connector marked "Com2 and mount connector) to connect the serial cable (which has been used with Stamps before) My problem is that when trying to "Identify" the Stamp, I continually get NO and NO under Loopback and Echo. I tried the cable and stamp with my laptop and it works fine so the cable/Stamp is OK, plus, I am using a Stamp Stack (pins 6&7 are bridged already) so the cable is not the problem.
I have not done much with either computers internally and am rather new to Stamps, although I have played with it on 2 other computers and not had this problem before. The old computer was a·486 and this one is a PII.
Any suggestions?
Thanks
Shawn
Comments
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Sid Weaver
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Thanks
It is seeing the Stamp on Com4 but I am getting Echo-Yes and Loopback-No. I have set both debug and editor ports to 4, rather than auto or none. any other suggestions? Don't be afraid to mention the obvious. I am new.
HTH
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Truly Understand the Fundamentals and the Path will be so much easier...
Some of these are wired differently than others.
Usually the end that connects to the motherboard is a 2 rows of 5 pins.
Bean.
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"Great people talk about great things, average people talk about average things, small people talk about other people."
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The cables ( I have tried two) both work with my laptop (via a USB adapter) and they both worked with the old computer.
I am glad it is not being too obvious. At least I am feeling better about staying up till 1 last night trying to do something I thought should not have been that hard! :-(
Any other suggestions? I will try a different COM connector. or at least switching the mouse and Com 2 connectors to see if they both work OK. One would think a connector and short ribbon cable should be OK.
Thanks
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Truly Understand the Fundamentals and the Path will be so much easier...
Also see if there are any programs loaded on boot that tie up Com2 like a fax program, or Palm program.
I have Win XP PRO working just fine on Com2...
Bob
I went to Device Manager and reset rec and trans buffers to low (1). I don't know what "latency" is or where to find it.
Didn't make a difference.
Next?
I used an ohm meter to sound out the wires and they are all different. Same motherboard connector and 9 lead ribbon to DB-9 connector but wiring is totally different for some reason. I did not expect this. I will go look for the proper connector. Nothing in my junk box.
I will update later. Thanks for all the inputs. Sorry if you feel I wasted your time.
Cheers,
Shawn
I was able to separate the DB-9 housing and rewire the connector. Not sure where this connector came from but obviously some other intention.
Thanks again.
Shawn