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Re: Having trouble with TTL port
Gene,
What kind of problems are you having? We've been struggling with the TTL port all week. From what we can tell, whenever we transmit something out the TTL port, we see garbage input on the RX side. When monitoring it with an oscilloscope, it looks like a signal is actually being generated on the RX pin. We tried grounding the RX pin, thinking maybe it was just noise from the TX, but that didn't work - we still saw garbage coming in. I'd have to doublecheck with one of our other engineers, but I believe that when we're not transmitting, we don't see junk on the serial port, but we're also not able to receive anything valid either.
Is this anything like what you've been seeing? We sent off an email to Innovation First about this problem last night to see what they have to say.
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