I have here a CFA-635 TMF KS (h1.0,s1.3) which appears not to respond to a request to set its LCD contrast to 0xFF. The exact packet I am sending is:
Now, I know that setting the contrast to 0xFF is a fairly crazy thing to do, but it is documented as being the full single byte range. Values below 255 work fine. Either my CRC code is off, which wasn't my first thought as it works fine with other long ASCII strings of text, or this is some sort of glitch on the display.
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