From 341653e3af8bab66a1b9939ef0566cad058505aa Mon Sep 17 00:00:00 2001 From: Marcin Bukat Date: Fri, 18 Jun 2010 11:58:26 +0000 Subject: HD200 - calibrate lcdlinear[] matrix git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26910 a1c6a512-1295-4272-9138-f99709370657 --- apps/plugins/lib/grey_core.c | 39 +++++++++++++++++++++++---------------- 1 file changed, 23 insertions(+), 16 deletions(-) (limited to 'apps/plugins') diff --git a/apps/plugins/lib/grey_core.c b/apps/plugins/lib/grey_core.c index 50e70e3b8e..27f7e585d8 100644 --- a/apps/plugins/lib/grey_core.c +++ b/apps/plugins/lib/grey_core.c @@ -271,23 +271,30 @@ static const unsigned char lcdlinear[256] = { #define LCD_SCANRATE 80 /* Hz */ #elif defined MPIO_HD200 +/* matrix generated in the following way + * 1) run 5 times test_grey + * 2) average results (joint points) + * 3) plot full matrix obtained by natural cubic b-spline interpolation + * 4) hand tweak joint points to smooth the curve + * 5) repeat steps 3 and 4 until interpolated curve is smooth + */ static const unsigned char lcdlinear[256] = { - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, - 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, - 32, 32, 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, 34, 34, 34, 35, - 35, 35, 36, 36, 36, 37, 37, 38, 38, 38, 39, 39, 40, 40, 40, 41, - 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 52, 54, 56, 58, 60, 61, - 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, - 62, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, - 78, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, - 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 109, -110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, -125, 126, 127, 129, 130, 132, 133, 134, 136, 137, 138, 140, 141, 142, 144, 145, -146, 145, 147, 149, 150, 152, 153, 154, 156, 157, 158, 160, 162, 164, 165, 166, -167, 167, 168, 168, 169, 169, 170, 170, 171, 171, 172, 172, 173, 174, 175, 176, -177, 177, 178, 178, 179, 179, 180, 180, 181, 181, 182, 182, 183, 184, 185, 186, -187, 188, 188, 189, 190, 190, 191, 192, 192, 193, 194, 195, 196, 197, 197, 198, -198, 201, 205, 208, 212, 215, 219, 222, 226, 229, 233, 236, 240, 243, 247, 252 + 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, + 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 15, + 16, 16, 16, 17, 17, 18, 18, 18, 19, 19, 20, 20, 20, 21, 21, 21, + 22, 22, 22, 22, 23, 23, 23, 24, 24, 24, 24, 25, 25, 25, 26, 26, + 27, 27, 27, 28, 28, 29, 29, 30, 30, 31, 31, 32, 32, 33, 33, 34, + 35, 35, 36, 36, 37, 37, 38, 39, 39, 40, 41, 41, 42, 43, 43, 44, + 45, 45, 46, 46, 47, 48, 49, 49, 50, 51, 51, 52, 53, 53, 54, 55, + 56, 56, 57, 58, 58, 59, 60, 61, 61, 62, 63, 64, 64, 65, 66, 67, + 68, 68, 69, 70, 71, 71, 72, 73, 74, 75, 75, 76, 77, 78, 79, 80, + 81, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, + 96, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 108, 109, 110, 111, +113, 114, 115, 117, 118, 120, 121, 123, 125, 126, 128, 130, 131, 133, 135, 137, +139, 140, 142, 144, 146, 147, 149, 151, 152, 154, 156, 157, 159, 161, 162, 164, +166, 167, 169, 170, 172, 173, 175, 176, 177, 179, 180, 182, 183, 184, 186, 187, +189, 190, 191, 193, 194, 195, 197, 198, 199, 201, 202, 203, 205, 206, 207, 208, +210, 211, 212, 213, 214, 215, 217, 218, 219, 220, 221, 222, 223, 224, 225, 227 }; #define LCD_SCANRATE 153 /* Hz */ -- cgit v1.2.3