Help with MEMKey

Liquidaudio

Hello
I have been trying for a week now to get my MEMKey working and it seems to have no communication. Here is my program:

'{$stamp BS2p}
'{$PBASIC 2.5}

INPUT 2 'TM
OUTPUT 12 'FM
INPUT 14 'key

TM CON 2
FM CON 12
key CON 14
baud CON 396 '2400 baud


HIGH 14 'reset time
PAUSE 1000

''''''''''''''''''''''''''''' Typematic delay and rate ''''''''''''''''''''''''''''''''
'2.5ms per unit
SEROUT FM, baud, [noparse][[/noparse]$02,$F0,$0C] 'program typmatic delay=600ms and rate=30ms
PAUSE 10 'EEPROM write time
SEROUT FM, baud, [noparse][[/noparse]$03] 'Read what was written to typematic register
SERIN TM, baud, [noparse][[/noparse]B0,B1]
DEBUG "delay: ", DEC B0, CR, "rate: ", DEC B1, CR

When I run this the stamp (BS2p24) runs up to the serin command and nothing is returned by the MEMKey, so it hangs at that command. I would like to know if there is a problem I have overlooked or should I call tech support since it is only 1 week old? I measure 5.0V on all pins all the time (referencing the GND pin on the MEMKey)

Thanks, John

dandreae

You need to change your baud rate to 1021 instead of 396 for the BS2p.

Dave

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Dave Andreae

Tech Support
dandreae@parallax.com
www.parallax.com

·

Liquidaudio

Hey
Thanks for the info. I changed the baud value to 1021 and there is still no change in what is received (or not received), all of the pins still stay at 5.0V. Next, I put a debug statement in between the serout and serin commands and it shows on the debug screen, but still nothing from the memkey. I have triple checked that I am using the correct I/O pins as set in the program.

Thanks, John

dandreae

Configure this code (attached) for your wiring and try it and see if it works?



Dave


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Dave Andreae

Tech Support
dandreae@parallax.com
www.parallax.com

Liquidaudio

Hello
After rewiring and downloading I saw a whole lot of nothing, still a blank debug window after ~1minute. I think this also rules out any bad pins since they have all changed except P2.

Thanks, John

dandreae

You may want to double check your wiring, the reason I say this is, that Parallax charges a $10.00 testing fee if no problems are found.· You can contact our sales department at 1-888-997-8267 and ask for an RMA number.· This will allow us to test it.

Dave

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Dave Andreae

Tech Support
dandreae@parallax.com
www.parallax.com

·

kelvin james

Since i have used the memkey for a while, i took a look at the code dave posted, and there are still a couple of 396 baud rates that were not replaced with the 1021. Don't know if you caught it or not. Make sure you have "solid" connections with the memkey.

kelvin