Flutterby™! : LCD geek out

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LCD geek out

2008-06-20 16:43:14.136053+00 by Dan Lyke 1 comments

Just in case you didn't think Flutterby was too geeky for you recently, the lesson of the morning: When reading the busy flag from a Hitachi 44780 LCD controller, you can't bring up R/W and E (enable) simultaneously, R/W must be brought up first. Even if it's just a clock cycle (I'm currently running the device at about 8MHz) difference. No wonder most authors simply recommend waiting 160 microseconds.

Next up, exploring sleep modes for ultra-low power behavior.

[ related topics: Hardware Hackery Embedded Devices ]

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#Comment Re: made: 2008-06-20 19:11:54.5121+00 by: ziffle

Some things are so obvious we don't understand why you bother to comment on them.... :)