Homemade board serial com. prob.
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Posts: 46,084
> 2 questions:
>
> First, are you sure the BS2 hasn't crapped out? can you program it
> with any other boards
Yes, it runs fine in my board and in the BOE.
> Secondly, are you 100% sure that all the connections are good? I've
> spent 2 days pulling out my hair when an HC11 board I made wouldn't
> program, until after 20 visual inspections of connections, I started
> wiggling wires, and found one of the programing wires was a fraction
> of a millimeter away from the pin/solder blob, and at an odd angle
> that I never would have noticed without actually doing the 'wiggle
> test'
Mostly sure, I'll check again. The chip runs fine in my board, it just won't
DL.
> Conclusion: the editor can make a mistake by detecting a Stamp where
> there is none (in this case, on COM3) and giving a misleading error
> message as a result. Make sure the editor is trying to access your
> Stamp from the correct serial port. If you don't know for sure which
> serial port you ought to specify, try forcing COM1, then COM2 etc.
Hmmm ... I'll try that.
> Why can you successfully program your Stamp on the BOE but not on
> your board? My guess is your cable doesn't have the RTS-->DSR
> loopback so the editor is not finding your Stamp's serial port
> automatically. The BOE may have this loopback on the PCB itself
> (anybody know for sure?) so a garden variety cable works fine on it.
I put the loopback on my programming cable. The BOE does have it on the PCB.
-William
>
> First, are you sure the BS2 hasn't crapped out? can you program it
> with any other boards
Yes, it runs fine in my board and in the BOE.
> Secondly, are you 100% sure that all the connections are good? I've
> spent 2 days pulling out my hair when an HC11 board I made wouldn't
> program, until after 20 visual inspections of connections, I started
> wiggling wires, and found one of the programing wires was a fraction
> of a millimeter away from the pin/solder blob, and at an odd angle
> that I never would have noticed without actually doing the 'wiggle
> test'
Mostly sure, I'll check again. The chip runs fine in my board, it just won't
DL.
> Conclusion: the editor can make a mistake by detecting a Stamp where
> there is none (in this case, on COM3) and giving a misleading error
> message as a result. Make sure the editor is trying to access your
> Stamp from the correct serial port. If you don't know for sure which
> serial port you ought to specify, try forcing COM1, then COM2 etc.
Hmmm ... I'll try that.
> Why can you successfully program your Stamp on the BOE but not on
> your board? My guess is your cable doesn't have the RTS-->DSR
> loopback so the editor is not finding your Stamp's serial port
> automatically. The BOE may have this loopback on the PCB itself
> (anybody know for sure?) so a garden variety cable works fine on it.
I put the loopback on my programming cable. The BOE does have it on the PCB.
-William