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Old 04-01-2012, 02:11 AM   #5644 (permalink)
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Location: Maricopa, AZ (sort of. Actually outside of town)
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Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
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Does anyone know what causes a continuous break signal with the serial communications? I'm using realterm, and I'm getting BREAK always set. It says it means "rxd line is broken" I think. But as far as I can tell, the rxd line isn't broken. Are there suggestions on debugging serial communications? I have an oscilloscope I can hook up to rxd to ground, or txd to ground. I never thought to check the serial communications on this board. I verified that it's wired the same as previous boards that actually work.

The RX line on the working one I believe was -6.6v or so. On the nonworking one, it was -13.2v If I remember right. And the working TX was -9.2 and the nonworking was -0.2v. But I can't remember now, I'm too depressed and tired. haha
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