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Added gamma 2.5 corrected 3.0 table added fade mode.

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The fade mode is using one gamma correction table and fades with a time
offset to create a nice moving fade.
This commit is contained in:
Piotr Esden-Tempski 2010-02-22 15:06:28 +01:00
parent c713c02e9d
commit da2b9d94fb
1 changed files with 117 additions and 35 deletions
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152
examples/mb525/pwmleds/pwmleds.c
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@ -21,9 +21,20 @@
#include <libopenstm32/gpio.h> #include <libopenstm32/gpio.h>
#include <libopenstm32/timer.h> #include <libopenstm32/timer.h>
//#define COMPARE
#define MOVING_FADE
#ifdef COMPARE
#define GAMMA_LINEAR #define GAMMA_LINEAR
#define GAMMA_1_3 #define GAMMA_1_3
#define GAMMA_2_5
#define GAMMA_3_0 #define GAMMA_3_0
#endif
#ifdef MOVING_FADE
#define GAMMA_3_0
#define GAMMA_TABLE gamma_table_3_0
#endif
/* /*
* Gamma correction table * Gamma correction table
@ -106,41 +117,79 @@ static const uint16_t gamma_table_1_3[] = {
}; };
#endif #endif
#ifdef GAMMA_2_5
static const uint16_t gamma_table_2_5[] = {
// gamma = 2.5
0, 0, 0, 1, 2, 4, 6, 8,
11, 15, 20, 25, 31, 38, 46, 55,
65, 75, 87, 99, 113, 128, 143, 160,
178, 197, 218, 239, 262, 286, 311, 338,
366, 395, 425, 457, 491, 526, 562, 599,
639, 679, 722, 765, 811, 857, 906, 956,
1007, 1061, 1116, 1172, 1231, 1291, 1352, 1416,
1481, 1548, 1617, 1688, 1760, 1834, 1910, 1988,
2068, 2150, 2233, 2319, 2407, 2496, 2587, 2681,
2776, 2874, 2973, 3075, 3178, 3284, 3391, 3501,
3613, 3727, 3843, 3961, 4082, 4204, 4329, 4456,
4585, 4716, 4850, 4986, 5124, 5264, 5407, 5552,
5699, 5849, 6001, 6155, 6311, 6470, 6632, 6795,
6962, 7130, 7301, 7475, 7650, 7829, 8009, 8193,
8379, 8567, 8758, 8951, 9147, 9345, 9546, 9750,
9956, 10165, 10376, 10590, 10806, 11025, 11247, 11472,
11699, 11929, 12161, 12397, 12634, 12875, 13119, 13365,
13614, 13865, 14120, 14377, 14637, 14899, 15165, 15433,
15705, 15979, 16256, 16535, 16818, 17104, 17392, 17683,
17978, 18275, 18575, 18878, 19184, 19493, 19805, 20119,
20437, 20758, 21082, 21409, 21739, 22072, 22407, 22746,
23089, 23434, 23782, 24133, 24487, 24845, 25206, 25569,
25936, 26306, 26679, 27055, 27435, 27818, 28203, 28592,
28985, 29380, 29779, 30181, 30586, 30994, 31406, 31820,
32239, 32660, 33085, 33513, 33944, 34379, 34817, 35258,
35702, 36150, 36602, 37056, 37514, 37976, 38441, 38909,
39380, 39856, 40334, 40816, 41301, 41790, 42282, 42778,
43277, 43780, 44286, 44795, 45308, 45825, 46345, 46869,
47396, 47927, 48461, 48999, 49540, 50085, 50634, 51186,
51742, 52301, 52864, 53431, 54001, 54575, 55153, 55734,
56318, 56907, 57499, 58095, 58695, 59298, 59905, 60515,
61130, 61748, 62370, 62995, 63624, 64258, 64894, 65535
};
#endif
#ifdef GAMMA_3_0 #ifdef GAMMA_3_0
static const uint16_t gamma_table_3_0[] = { static const uint16_t gamma_table_3_0[] = {
// gamma = 3.0014 // gamma = 3.0
0, 1, 4, 9, 16, 25, 36, 49, 0, 0, 0, 0, 0, 0, 1, 1,
64, 81, 100, 121, 145, 170, 197, 226, 2, 3, 4, 5, 7, 9, 11, 13,
257, 290, 325, 362, 402, 443, 486, 531, 16, 19, 23, 27, 32, 37, 42, 48,
579, 628, 679, 732, 788, 845, 904, 966, 55, 62, 69, 78, 87, 96, 107, 118,
1029, 1094, 1162, 1231, 1303, 1376, 1451, 1529, 130, 142, 155, 169, 184, 200, 217, 234,
1608, 1690, 1773, 1859, 1946, 2036, 2127, 2221, 253, 272, 293, 314, 337, 360, 385, 410,
2317, 2414, 2514, 2615, 2719, 2825, 2932, 3042, 437, 465, 494, 524, 556, 588, 622, 658,
3154, 3267, 3383, 3501, 3621, 3742, 3866, 3992, 694, 732, 771, 812, 854, 897, 942, 988,
4120, 4250, 4382, 4516, 4651, 4789, 4929, 5071, 1036, 1085, 1136, 1189, 1243, 1298, 1356, 1415,
5215, 5361, 5509, 5659, 5811, 5965, 6121, 6279, 1475, 1538, 1602, 1667, 1735, 1804, 1876, 1949,
6439, 6601, 6766, 6932, 7100, 7270, 7442, 7616, 2024, 2100, 2179, 2260, 2343, 2427, 2514, 2603,
7793, 7971, 8151, 8333, 8518, 8704, 8892, 9083, 2693, 2786, 2881, 2978, 3078, 3179, 3283, 3389,
9275, 9469, 9666, 9864, 10065, 10267, 10472, 10678, 3497, 3607, 3720, 3835, 3952, 4072, 4194, 4319,
10887, 11097, 11310, 11524, 11741, 11959, 12180, 12403, 4446, 4575, 4707, 4842, 4979, 5118, 5261, 5405,
12627, 12854, 13082, 13313, 13546, 13781, 14017, 14256, 5553, 5703, 5856, 6011, 6169, 6330, 6494, 6660,
14497, 14740, 14984, 15231, 15480, 15731, 15984, 16239, 6830, 7002, 7177, 7355, 7536, 7719, 7906, 8096,
16496, 16755, 17016, 17279, 17544, 17811, 18080, 18351, 8289, 8484, 8683, 8885, 9090, 9298, 9510, 9724,
18624, 18899, 19176, 19455, 19736, 20019, 20304, 20592, 9942, 10163, 10387, 10614, 10845, 11079, 11317, 11557,
20881, 21172, 21465, 21761, 22058, 22357, 22658, 22962, 11802, 12049, 12300, 12555, 12813, 13074, 13339, 13608,
23267, 23574, 23884, 24195, 24509, 24824, 25142, 25461, 13880, 14156, 14435, 14718, 15005, 15295, 15589, 15887,
25783, 26106, 26432, 26759, 27089, 27420, 27754, 28090, 16189, 16494, 16803, 17117, 17433, 17754, 18079, 18408,
28427, 28767, 29109, 29452, 29798, 30146, 30495, 30847, 18740, 19077, 19418, 19762, 20111, 20464, 20821, 21182,
31201, 31557, 31915, 32275, 32636, 33000, 33366, 33734, 21547, 21917, 22290, 22668, 23050, 23436, 23827, 24222,
34104, 34476, 34850, 35226, 35604, 35984, 36366, 36750, 24621, 25025, 25433, 25845, 26262, 26683, 27109, 27539,
37136, 37524, 37915, 38307, 38701, 39097, 39495, 39896, 27974, 28413, 28857, 29306, 29759, 30217, 30680, 31147,
40298, 40702, 41108, 41517, 41927, 42339, 42754, 43170, 31619, 32095, 32577, 33063, 33554, 34050, 34551, 35056,
43589, 44009, 44431, 44856, 45282, 45711, 46141, 46574, 35567, 36082, 36602, 37128, 37658, 38194, 38734, 39280,
47008, 47445, 47884, 48324, 48767, 49212, 49658, 50107, 39830, 40386, 40947, 41513, 42084, 42661, 43243, 43830,
50558, 51010, 51465, 51922, 52381, 52841, 53304, 53769, 44422, 45019, 45622, 46231, 46844, 47463, 48088, 48718,
54236, 54705, 55176, 55649, 56124, 56601, 57080, 57561, 49353, 49994, 50641, 51293, 51950, 52614, 53282, 53957,
58044, 58529, 59016, 59505, 59996, 60489, 60984, 61481, 54637, 55323, 56014, 56712, 57415, 58123, 58838, 59558,
61981, 62482, 62985, 63490, 63998, 64507, 65018, 65531 60285, 61017, 61755, 62499, 63249, 64005, 64767, 65535
}; };
#endif #endif
@ -264,13 +313,14 @@ int main(void)
gpio_setup(); gpio_setup();
tim_setup(); tim_setup();
#ifdef COMPARE
j0=0; j0=0;
d0=1; d0=1;
j1=0; j1=0;
d1=1; d1=1;
j2=0; j2=0;
d2=1; d2=1;
j3=128; j3=0;
d3=1; d3=1;
while (1) while (1)
{ {
@ -282,7 +332,7 @@ int main(void)
j1+=d1; j1+=d1;
if(j1==255) d1=-1; if(j1==255) d1=-1;
if(j1==0) d1=1; if(j1==0) d1=1;
TIM3_CCR3= gamma_table_3_0[j2]; TIM3_CCR3= gamma_table_2_5[j2];
j2+=d2; j2+=d2;
if(j2==255) d2=-1; if(j2==255) d2=-1;
if(j2==0) d2=1; if(j2==0) d2=1;
@ -292,6 +342,38 @@ int main(void)
if(j3==0) d3=1; if(j3==0) d3=1;
for(i=0; i< 50000; i++){} for(i=0; i< 50000; i++){}
} }
#endif
#ifdef MOVING_FADE
j0=0;
d0=1;
j1=64;
d1=1;
j2=128;
d2=1;
j3=192;
d3=1;
while (1)
{
TIM3_CCR1= GAMMA_TABLE[j0];
j0+=d0;
if(j0==255) d0=-1;
if(j0==0) d0=1;
TIM3_CCR2= GAMMA_TABLE[j1];
j1+=d1;
if(j1==255) d1=-1;
if(j1==0) d1=1;
TIM3_CCR3= GAMMA_TABLE[j2];
j2+=d2;
if(j2==255) d2=-1;
if(j2==0) d2=1;
TIM3_CCR4= GAMMA_TABLE[j3];
j3+=d3;
if(j3==255) d3=-1;
if(j3==0) d3=1;
for(i=0; i< 50000; i++){}
}
#endif
return 0; return 0;
} }