Why such braindead serial protocol?

LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT Series

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hramrach
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Why such braindead serial protocol?

Post by hramrach » Tue Apr 13, 2010 3:38 pm

Hello,

I found a LK162-12 on sale and thought I would put one into my PC.

The problem is it does not understand normal control characters like CR or LF, it has this braindead protocol with 0xFE escape.

Why make a display with ASCII charset that does not understand ASCII control characters?

It could JustWork if attached to a serial port and console directed to it but not this way.

Ray
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Post by Ray » Wed Apr 14, 2010 2:53 pm

Cause it wasn't designed with that purpose, using the 'braindead' 0xfe protocol will give you more control over the display then plain ascii ever could, thats why.

Clark
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Post by Clark » Wed Apr 14, 2010 3:47 pm

The 0xFE advanced command prefix aside, newer LCDs have been programmed to retain the intelligence of control characters CR (0x0D), LF (0x0A), FF (0x0C) and BS (0x08).
Troy Clark
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