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authorUwe Hermann2010-02-23 23:38:05 +0100
committerUwe Hermann2010-02-23 23:38:05 +0100
commit0a0be96d1261d260aa26e14e008a29052313fe00 (patch)
tree9f28cd1ef748f279f8c67746ff3c601e6123f545 /examples/mb525/pwmleds
parent2c404f962ae96e389b3d49cf5393edd0619c4fc0 (diff)
Cosmetics, whitespace, coding style.
Diffstat (limited to 'examples/mb525/pwmleds')
-rw-r--r--examples/mb525/pwmleds/README2
-rw-r--r--examples/mb525/pwmleds/pwmleds.c390
2 files changed, 206 insertions, 186 deletions
diff --git a/examples/mb525/pwmleds/README b/examples/mb525/pwmleds/README
index 08ca69d..08cc36b 100644
--- a/examples/mb525/pwmleds/README
+++ b/examples/mb525/pwmleds/README
@@ -2,7 +2,7 @@
README
------------------------------------------------------------------------------
-This is a PWM based led fading example using libopenstm32.
+This is a PWM based LED fading example using libopenstm32.
It's intended for the ST STM32-based MB525 eval board (see
http://www.st.com/stonline/products/literature/um/13472.htm for details). It
diff --git a/examples/mb525/pwmleds/pwmleds.c b/examples/mb525/pwmleds/pwmleds.c
index f2b1ff9..fb11b8e 100644
--- a/examples/mb525/pwmleds/pwmleds.c
+++ b/examples/mb525/pwmleds/pwmleds.c
@@ -17,13 +17,14 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <libopenstm32/common.h>
#include <libopenstm32/rcc.h>
#include <libopenstm32/gpio.h>
#include <libopenstm32/timer.h>
-//#define COMPARE
+#define COMPARE
//#define MOVING_FADE
-#define KITT
+// #define KITT
#ifdef COMPARE
#define GAMMA_LINEAR
@@ -49,83 +50,83 @@
* Iout = Iin ** gamma
*/
#ifdef GAMMA_LINEAR
-static const uint16_t gamma_table_linear[] = {
- 1, 4, 9, 17, 26, 37, 51, 67,
- 84, 104, 126, 149, 175, 203, 233, 265,
- 299, 334, 372, 412, 454, 499, 545, 593,
- 643, 695, 749, 805, 864, 924, 986, 1050,
- 1116, 1185, 1255, 1327, 1402, 1478, 1556, 1637,
- 1719, 1803, 1890, 1978, 2068, 2161, 2255, 2352,
- 2450, 2550, 2653, 2757, 2864, 2972, 3082, 3195,
- 3309, 3426, 3544, 3664, 3787, 3911, 4038, 4166,
- 4296, 4429, 4563, 4700, 4838, 4978, 5121, 5265,
- 5411, 5560, 5710, 5862, 6017, 6173, 6331, 6492,
- 6654, 6818, 6985, 7153, 7323, 7495, 7670, 7846,
- 8024, 8204, 8387, 8571, 8757, 8945, 9135, 9327,
- 9521, 9718, 9916, 10116, 10318, 10522, 10728, 10936,
- 11146, 11358, 11572, 11788, 12006, 12226, 12448, 12672,
- 12897, 13125, 13355, 13587, 13821, 14057, 14294, 14534,
- 14776, 15020, 15265, 15513, 15763, 16014, 16268, 16524,
- 16781, 17041, 17302, 17566, 17831, 18099, 18368, 18640,
- 18913, 19189, 19466, 19745, 20027, 20310, 20595, 20883,
- 21172, 21463, 21756, 22051, 22349, 22648, 22949, 23252,
- 23557, 23864, 24173, 24484, 24797, 25112, 25429, 25748,
- 26069, 26391, 26716, 27043, 27372, 27702, 28035, 28370,
- 28707, 29045, 29386, 29728, 30073, 30419, 30768, 31118,
- 31471, 31825, 32182, 32540, 32900, 33263, 33627, 33993,
- 34361, 34731, 35104, 35478, 35854, 36232, 36612, 36994,
- 37378, 37764, 38152, 38542, 38933, 39327, 39723, 40121,
- 40521, 40922, 41326, 41732, 42139, 42549, 42960, 43374,
- 43789, 44207, 44626, 45048, 45471, 45896, 46324, 46753,
- 47184, 47617, 48052, 48490, 48929, 49370, 49813, 50258,
- 50705, 51154, 51604, 52057, 52512, 52969, 53428, 53888,
- 54351, 54816, 55282, 55751, 56222, 56694, 57169, 57645,
- 58123, 58604, 59086, 59570, 60057, 60545, 61035, 61527,
- 62021, 62517, 63016, 63516, 64018, 64521, 65027, 65535
+static const u16 gamma_table_linear[] = {
+ 1, 4, 9, 17, 26, 37, 51, 67,
+ 84, 104, 126, 149, 175, 203, 233, 265,
+ 299, 334, 372, 412, 454, 499, 545, 593,
+ 643, 695, 749, 805, 864, 924, 986, 1050,
+ 1116, 1185, 1255, 1327, 1402, 1478, 1556, 1637,
+ 1719, 1803, 1890, 1978, 2068, 2161, 2255, 2352,
+ 2450, 2550, 2653, 2757, 2864, 2972, 3082, 3195,
+ 3309, 3426, 3544, 3664, 3787, 3911, 4038, 4166,
+ 4296, 4429, 4563, 4700, 4838, 4978, 5121, 5265,
+ 5411, 5560, 5710, 5862, 6017, 6173, 6331, 6492,
+ 6654, 6818, 6985, 7153, 7323, 7495, 7670, 7846,
+ 8024, 8204, 8387, 8571, 8757, 8945, 9135, 9327,
+ 9521, 9718, 9916, 10116, 10318, 10522, 10728, 10936,
+ 11146, 11358, 11572, 11788, 12006, 12226, 12448, 12672,
+ 12897, 13125, 13355, 13587, 13821, 14057, 14294, 14534,
+ 14776, 15020, 15265, 15513, 15763, 16014, 16268, 16524,
+ 16781, 17041, 17302, 17566, 17831, 18099, 18368, 18640,
+ 18913, 19189, 19466, 19745, 20027, 20310, 20595, 20883,
+ 21172, 21463, 21756, 22051, 22349, 22648, 22949, 23252,
+ 23557, 23864, 24173, 24484, 24797, 25112, 25429, 25748,
+ 26069, 26391, 26716, 27043, 27372, 27702, 28035, 28370,
+ 28707, 29045, 29386, 29728, 30073, 30419, 30768, 31118,
+ 31471, 31825, 32182, 32540, 32900, 33263, 33627, 33993,
+ 34361, 34731, 35104, 35478, 35854, 36232, 36612, 36994,
+ 37378, 37764, 38152, 38542, 38933, 39327, 39723, 40121,
+ 40521, 40922, 41326, 41732, 42139, 42549, 42960, 43374,
+ 43789, 44207, 44626, 45048, 45471, 45896, 46324, 46753,
+ 47184, 47617, 48052, 48490, 48929, 49370, 49813, 50258,
+ 50705, 51154, 51604, 52057, 52512, 52969, 53428, 53888,
+ 54351, 54816, 55282, 55751, 56222, 56694, 57169, 57645,
+ 58123, 58604, 59086, 59570, 60057, 60545, 61035, 61527,
+ 62021, 62517, 63016, 63516, 64018, 64521, 65027, 65535,
};
#endif
#ifdef GAMMA_1_3
-static const uint16_t gamma_table_1_3[] = {
- // Gamma 1.3
- 0, 49, 120, 203, 296, 395, 501, 612,
- 728, 848, 973, 1101, 1233, 1368, 1506, 1648,
- 1792, 1939, 2088, 2241, 2395, 2552, 2711, 2872,
- 3036, 3201, 3369, 3538, 3709, 3882, 4057, 4234,
- 4412, 4592, 4774, 4957, 5142, 5329, 5517, 5706,
- 5897, 6090, 6283, 6479, 6675, 6873, 7072, 7273,
- 7475, 7678, 7882, 8088, 8294, 8502, 8711, 8922,
- 9133, 9346, 9559, 9774, 9990, 10207, 10425, 10644,
- 10864, 11086, 11308, 11531, 11755, 11981, 12207, 12434,
- 12662, 12891, 13121, 13352, 13584, 13817, 14051, 14285,
- 14521, 14757, 14994, 15233, 15472, 15712, 15952, 16194,
- 16436, 16679, 16923, 17168, 17414, 17660, 17908, 18156,
- 18405, 18654, 18905, 19156, 19408, 19660, 19914, 20168,
- 20423, 20679, 20935, 21192, 21450, 21708, 21968, 22228,
- 22488, 22750, 23012, 23275, 23538, 23802, 24067, 24332,
- 24599, 24865, 25133, 25401, 25670, 25939, 26209, 26480,
- 26751, 27023, 27296, 27569, 27843, 28118, 28393, 28669,
- 28945, 29222, 29500, 29778, 30057, 30336, 30616, 30897,
- 31178, 31460, 31742, 32025, 32308, 32592, 32877, 33162,
- 33448, 33734, 34021, 34309, 34597, 34885, 35175, 35464,
- 35754, 36045, 36337, 36628, 36921, 37214, 37507, 37801,
- 38096, 38391, 38686, 38982, 39279, 39576, 39874, 40172,
- 40471, 40770, 41070, 41370, 41670, 41972, 42273, 42576,
- 42878, 43181, 43485, 43789, 44094, 44399, 44705, 45011,
- 45317, 45625, 45932, 46240, 46549, 46858, 47167, 47477,
- 47787, 48098, 48409, 48721, 49034, 49346, 49659, 49973,
- 50287, 50602, 50917, 51232, 51548, 51864, 52181, 52498,
- 52816, 53134, 53452, 53771, 54091, 54411, 54731, 55052,
- 55373, 55694, 56016, 56339, 56662, 56985, 57309, 57633,
- 57957, 58282, 58608, 58933, 59260, 59586, 59913, 60241,
- 60569, 60897, 61226, 61555, 61884, 62214, 62545, 62875,
- 63206, 63538, 63870, 64202, 64535, 64868, 65201, 65535
+static const u16 gamma_table_1_3[] = {
+ /* Gamma 1.3 */
+ 0, 49, 120, 203, 296, 395, 501, 612,
+ 728, 848, 973, 1101, 1233, 1368, 1506, 1648,
+ 1792, 1939, 2088, 2241, 2395, 2552, 2711, 2872,
+ 3036, 3201, 3369, 3538, 3709, 3882, 4057, 4234,
+ 4412, 4592, 4774, 4957, 5142, 5329, 5517, 5706,
+ 5897, 6090, 6283, 6479, 6675, 6873, 7072, 7273,
+ 7475, 7678, 7882, 8088, 8294, 8502, 8711, 8922,
+ 9133, 9346, 9559, 9774, 9990, 10207, 10425, 10644,
+ 10864, 11086, 11308, 11531, 11755, 11981, 12207, 12434,
+ 12662, 12891, 13121, 13352, 13584, 13817, 14051, 14285,
+ 14521, 14757, 14994, 15233, 15472, 15712, 15952, 16194,
+ 16436, 16679, 16923, 17168, 17414, 17660, 17908, 18156,
+ 18405, 18654, 18905, 19156, 19408, 19660, 19914, 20168,
+ 20423, 20679, 20935, 21192, 21450, 21708, 21968, 22228,
+ 22488, 22750, 23012, 23275, 23538, 23802, 24067, 24332,
+ 24599, 24865, 25133, 25401, 25670, 25939, 26209, 26480,
+ 26751, 27023, 27296, 27569, 27843, 28118, 28393, 28669,
+ 28945, 29222, 29500, 29778, 30057, 30336, 30616, 30897,
+ 31178, 31460, 31742, 32025, 32308, 32592, 32877, 33162,
+ 33448, 33734, 34021, 34309, 34597, 34885, 35175, 35464,
+ 35754, 36045, 36337, 36628, 36921, 37214, 37507, 37801,
+ 38096, 38391, 38686, 38982, 39279, 39576, 39874, 40172,
+ 40471, 40770, 41070, 41370, 41670, 41972, 42273, 42576,
+ 42878, 43181, 43485, 43789, 44094, 44399, 44705, 45011,
+ 45317, 45625, 45932, 46240, 46549, 46858, 47167, 47477,
+ 47787, 48098, 48409, 48721, 49034, 49346, 49659, 49973,
+ 50287, 50602, 50917, 51232, 51548, 51864, 52181, 52498,
+ 52816, 53134, 53452, 53771, 54091, 54411, 54731, 55052,
+ 55373, 55694, 56016, 56339, 56662, 56985, 57309, 57633,
+ 57957, 58282, 58608, 58933, 59260, 59586, 59913, 60241,
+ 60569, 60897, 61226, 61555, 61884, 62214, 62545, 62875,
+ 63206, 63538, 63870, 64202, 64535, 64868, 65201, 65535,
};
#endif
#ifdef GAMMA_2_5
-static const uint16_t gamma_table_2_5[] = {
- // gamma = 2.5
+static const u16 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,
@@ -157,13 +158,13 @@ static const uint16_t gamma_table_2_5[] = {
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
+ 61130, 61748, 62370, 62995, 63624, 64258, 64894, 65535,
};
#endif
#ifdef GAMMA_3_0
-static const uint16_t gamma_table_3_0[] = {
- // gamma = 3.0
+static const u16 gamma_table_3_0[] = {
+ /* gamma = 3.0 */
0, 0, 0, 0, 0, 0, 1, 1,
2, 3, 4, 5, 7, 9, 11, 13,
16, 19, 23, 27, 32, 37, 42, 48,
@@ -195,7 +196,7 @@ static const uint16_t gamma_table_3_0[] = {
44422, 45019, 45622, 46231, 46844, 47463, 48088, 48718,
49353, 49994, 50641, 51293, 51950, 52614, 53282, 53957,
54637, 55323, 56014, 56712, 57415, 58123, 58838, 59558,
- 60285, 61017, 61755, 62499, 63249, 64005, 64767, 65535
+ 60285, 61017, 61755, 62499, 63249, 64005, 64767, 65535,
};
#endif
@@ -225,28 +226,25 @@ void clock_setup(void)
/* Enable GPIOC, Alternate Function clocks. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, IOPCEN | AFIOEN);
-
}
void gpio_setup(void)
{
-
- /* Set GPIO6 (in GPIO port C) to
- * 'output alternate function push-pull'.
- */
+ /*
+ * Set GPIO6 (in GPIO port C) to
+ * 'output alternate function push-pull'.
+ */
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_50_MHZ,
- GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO6 |
- GPIO7 |
- GPIO8 |
- GPIO9);
-
- /* Remap TIM3:
- * CH1 -> PC6
- * CH2 -> PC7
- * CH3 -> PC8
- * CH4 -> PC9
- */
- AFIO_MAPR |= AFIO_MAPR_TIM3_REMAP_FULL_REMAP;
+ GPIO_CNF_OUTPUT_ALTFN_PUSHPULL,
+ GPIO6 | GPIO7 | GPIO8 | GPIO9);
+
+ /* Remap TIM3:
+ * CH1 -> PC6
+ * CH2 -> PC7
+ * CH3 -> PC8
+ * CH4 -> PC9
+ */
+ AFIO_MAPR |= AFIO_MAPR_TIM3_REMAP_FULL_REMAP;
}
void tim_setup(void)
{
@@ -263,7 +261,7 @@ void tim_setup(void)
TIM3_CCMR1 |= TIM_CCMR1_OC1M_PWM1 | TIM_CCMR1_OC1PE;
/* Polarity and state */
- //TIM3_CCER = TIM_CCER_CC1P | TIM_CCER_CC1E;
+ // TIM3_CCER = TIM_CCER_CC1P | TIM_CCER_CC1E;
TIM3_CCER |= TIM_CCER_CC1E;
/* Capture compare value */
@@ -274,7 +272,7 @@ void tim_setup(void)
TIM3_CCMR1 |= TIM_CCMR1_OC2M_PWM1 | TIM_CCMR1_OC2PE;
/* Polarity and state */
- //TIM3_CCER = TIM_CCER_CC1P | TIM_CCER_CC1E;
+ // TIM3_CCER = TIM_CCER_CC1P | TIM_CCER_CC1E;
TIM3_CCER |= TIM_CCER_CC2E;
/* Capture compare value */
@@ -285,7 +283,7 @@ void tim_setup(void)
TIM3_CCMR2 |= TIM_CCMR2_OC3M_PWM1 | TIM_CCMR2_OC3PE;
/* Polarity and state */
- //TIM3_CCER = TIM_CCER_CC1P | TIM_CCER_CC1E;
+ // TIM3_CCER = TIM_CCER_CC1P | TIM_CCER_CC1E;
TIM3_CCER |= TIM_CCER_CC3E;
/* Capture compare value */
@@ -296,7 +294,7 @@ void tim_setup(void)
TIM3_CCMR2 |= TIM_CCMR2_OC4M_PWM1 | TIM_CCMR2_OC4PE;
/* Polarity and state */
- //TIM3_CCER = TIM_CCER_CC1P | TIM_CCER_CC1E;
+ // TIM3_CCER = TIM_CCER_CC1P | TIM_CCER_CC1E;
TIM3_CCER |= TIM_CCER_CC4E;
/* Capture compare value */
@@ -308,7 +306,6 @@ void tim_setup(void)
/* Counter enable */
TIM3_CR1 |= TIM_CR1_CEN;
-
}
int main(void)
@@ -320,102 +317,123 @@ int main(void)
tim_setup();
#ifdef COMPARE
- j0=0;
- d0=1;
- j1=0;
- d1=1;
- j2=0;
- d2=1;
- j3=0;
- d3=1;
- while (1)
- {
- TIM3_CCR1= gamma_table_linear[j0];
- j0+=d0;
- if(j0==255) d0=-1;
- if(j0==0) d0=1;
- TIM3_CCR2= gamma_table_1_3[j1];
- j1+=d1;
- if(j1==255) d1=-1;
- if(j1==0) d1=1;
- TIM3_CCR3= gamma_table_2_5[j2];
- j2+=d2;
- if(j2==255) d2=-1;
- if(j2==0) d2=1;
+ j0 = 0;
+ d0 = 1;
+ j1 = 0;
+ d1 = 1;
+ j2 = 0;
+ d2 = 1;
+ j3 = 0;
+ d3 = 1;
+ while (1) {
+ TIM3_CCR1 = gamma_table_linear[j0];
+ j0 += d0;
+ if (j0 == 255)
+ d0 =- 1;
+ if (j0 == 0)
+ d0 = 1;
+ TIM3_CCR2 = gamma_table_1_3[j1];
+ j1 += d1;
+ if (j1 == 255)
+ d1 =- 1;
+ if (j1 == 0)
+ d1 = 1;
+ TIM3_CCR3 = gamma_table_2_5[j2];
+ j2 += d2;
+ if (j2 == 255)
+ d2 =- 1;
+ if (j2 == 0)
+ d2 = 1;
TIM3_CCR4= gamma_table_3_0[j3];
- j3+=d3;
- if(j3==255) d3=-1;
- if(j3==0) d3=1;
- for(i=0; i< 50000; i++){}
+ j3 += d3;
+ if (j3 == 255)
+ d3 =- 1;
+ if (j3 == 0)
+ d3 = 1;
+ for (i = 0; i < 50000; i++);
}
#endif
#ifdef MOVING_FADE
- j0=0;
- d0=1;
- j1=128;
- d1=1;
- j2=255;
- d2=-1;
- j3=128;
- 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< 10000; i++){}
+ j0 = 0;
+ d0 = 1;
+ j1 = 128;
+ d1 = 1;
+ j2 = 255;
+ d2 = -1;
+ j3 = 128;
+ 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 < 10000; i++);
}
#endif
#ifdef KITT
- j0=255;
- d0=-1;
- j1=20;
- d1=-1;
- j2=20;
- d2=-1;
- j3=20;
- d3=-1;
- j=0;
- k=0;
- kd=1;
- while (1)
- {
- TIM3_CCR1= GAMMA_TABLE[j0];
- j0+=d0;
- if(j0==255) d0=-1;
- if(j0==19) j0=20;
- TIM3_CCR2= GAMMA_TABLE[j1];
- j1+=d1;
- if(j1==255) d1=-1;
- if(j1==19) j1=20;
- TIM3_CCR3= GAMMA_TABLE[j2];
- j2+=d2;
- if(j2==255) d2=-1;
- if(j2==19) j2=20;
- TIM3_CCR4= GAMMA_TABLE[j3];
- j3+=d3;
- if(j3==255) d3=-1;
- if(j3==19) j3=20;
- for(i=0; i< 5000; i++){}
+ j0 = 255;
+ d0 = -1;
+ j1 = 20;
+ d1 = -1;
+ j2 = 20;
+ d2 = -1;
+ j3 = 20;
+ d3 = -1;
+ j = 0;
+ k = 0;
+ kd = 1;
+ while (1) {
+ TIM3_CCR1 = GAMMA_TABLE[j0];
+ j0 += d0;
+ if (j0 == 255)
+ d0 =- 1;
+ if (j0 == 19)
+ j0 = 20;
+ TIM3_CCR2 = GAMMA_TABLE[j1];
+ j1 += d1;
+ if (j1 == 255)
+ d1 =- 1;
+ if (j1 == 19)
+ j1 = 20;
+ TIM3_CCR3 = GAMMA_TABLE[j2];
+ j2 += d2;
+ if (j2 == 255)
+ d2 =- 1;
+ if (j2 == 19)
+ j2 = 20;
+ TIM3_CCR4 = GAMMA_TABLE[j3];
+ j3 += d3;
+ if (j3 == 255)
+ d3 =- 1;
+ if (j3 == 19)
+ j3 = 20;
+ for (i = 0; i < 5000; i++);
j++;
- if(j==100){
- j=0;
- switch(k+=kd){
+ if (j == 100) {
+ j = 0;
+ switch (k += kd) {
case 0:
j0 = 255;
break;
@@ -429,8 +447,10 @@ int main(void)
j3 = 255;
break;
}
- if(k==3) kd=-1;
- if(k==0) kd=1;
+ if (k == 3)
+ kd =- 1;
+ if (k == 0)
+ kd = 1;
}
}
#endif