Cosmetics, whitespace, coding style.
This commit is contained in:
Uwe Hermann
parent
2c404f962a
commit
0a0be96d12
@ -2,7 +2,7 @@
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README
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------------------------------------------------------------------------------
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This is a PWM based led fading example using libopenstm32.
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This is a PWM based LED fading example using libopenstm32.
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It's intended for the ST STM32-based MB525 eval board (see
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http://www.st.com/stonline/products/literature/um/13472.htm for details). It
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@ -17,13 +17,14 @@
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <libopenstm32/common.h>
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#include <libopenstm32/rcc.h>
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#include <libopenstm32/gpio.h>
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#include <libopenstm32/timer.h>
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//#define COMPARE
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#define COMPARE
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//#define MOVING_FADE
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#define KITT
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// #define KITT
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#ifdef COMPARE
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#define GAMMA_LINEAR
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@ -49,7 +50,7 @@
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* Iout = Iin ** gamma
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*/
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#ifdef GAMMA_LINEAR
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static const uint16_t gamma_table_linear[] = {
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static const u16 gamma_table_linear[] = {
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1, 4, 9, 17, 26, 37, 51, 67,
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84, 104, 126, 149, 175, 203, 233, 265,
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299, 334, 372, 412, 454, 499, 545, 593,
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@ -81,13 +82,13 @@ static const uint16_t gamma_table_linear[] = {
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50705, 51154, 51604, 52057, 52512, 52969, 53428, 53888,
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54351, 54816, 55282, 55751, 56222, 56694, 57169, 57645,
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58123, 58604, 59086, 59570, 60057, 60545, 61035, 61527,
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62021, 62517, 63016, 63516, 64018, 64521, 65027, 65535
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62021, 62517, 63016, 63516, 64018, 64521, 65027, 65535,
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};
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#endif
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#ifdef GAMMA_1_3
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static const uint16_t gamma_table_1_3[] = {
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// Gamma 1.3
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static const u16 gamma_table_1_3[] = {
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/* Gamma 1.3 */
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0, 49, 120, 203, 296, 395, 501, 612,
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728, 848, 973, 1101, 1233, 1368, 1506, 1648,
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1792, 1939, 2088, 2241, 2395, 2552, 2711, 2872,
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@ -119,13 +120,13 @@ static const uint16_t gamma_table_1_3[] = {
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55373, 55694, 56016, 56339, 56662, 56985, 57309, 57633,
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57957, 58282, 58608, 58933, 59260, 59586, 59913, 60241,
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60569, 60897, 61226, 61555, 61884, 62214, 62545, 62875,
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63206, 63538, 63870, 64202, 64535, 64868, 65201, 65535
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63206, 63538, 63870, 64202, 64535, 64868, 65201, 65535,
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};
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#endif
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#ifdef GAMMA_2_5
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static const uint16_t gamma_table_2_5[] = {
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// gamma = 2.5
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static const u16 gamma_table_2_5[] = {
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/* gamma = 2.5 */
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0, 0, 0, 1, 2, 4, 6, 8,
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11, 15, 20, 25, 31, 38, 46, 55,
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65, 75, 87, 99, 113, 128, 143, 160,
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@ -157,13 +158,13 @@ static const uint16_t gamma_table_2_5[] = {
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47396, 47927, 48461, 48999, 49540, 50085, 50634, 51186,
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51742, 52301, 52864, 53431, 54001, 54575, 55153, 55734,
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56318, 56907, 57499, 58095, 58695, 59298, 59905, 60515,
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61130, 61748, 62370, 62995, 63624, 64258, 64894, 65535
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61130, 61748, 62370, 62995, 63624, 64258, 64894, 65535,
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};
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#endif
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#ifdef GAMMA_3_0
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static const uint16_t gamma_table_3_0[] = {
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// gamma = 3.0
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static const u16 gamma_table_3_0[] = {
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/* gamma = 3.0 */
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0, 0, 0, 0, 0, 0, 1, 1,
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2, 3, 4, 5, 7, 9, 11, 13,
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16, 19, 23, 27, 32, 37, 42, 48,
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@ -195,7 +196,7 @@ static const uint16_t gamma_table_3_0[] = {
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44422, 45019, 45622, 46231, 46844, 47463, 48088, 48718,
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49353, 49994, 50641, 51293, 51950, 52614, 53282, 53957,
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54637, 55323, 56014, 56712, 57415, 58123, 58838, 59558,
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60285, 61017, 61755, 62499, 63249, 64005, 64767, 65535
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60285, 61017, 61755, 62499, 63249, 64005, 64767, 65535,
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};
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#endif
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@ -225,20 +226,17 @@ void clock_setup(void)
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/* Enable GPIOC, Alternate Function clocks. */
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rcc_peripheral_enable_clock(&RCC_APB2ENR, IOPCEN | AFIOEN);
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}
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void gpio_setup(void)
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{
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/* Set GPIO6 (in GPIO port C) to
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/*
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* Set GPIO6 (in GPIO port C) to
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* 'output alternate function push-pull'.
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*/
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gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_50_MHZ,
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GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO6 |
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GPIO7 |
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GPIO8 |
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GPIO9);
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GPIO_CNF_OUTPUT_ALTFN_PUSHPULL,
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GPIO6 | GPIO7 | GPIO8 | GPIO9);
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/* Remap TIM3:
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* CH1 -> PC6
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@ -308,7 +306,6 @@ void tim_setup(void)
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/* Counter enable */
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TIM3_CR1 |= TIM_CR1_CEN;
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}
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int main(void)
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@ -328,25 +325,32 @@ int main(void)
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d2 = 1;
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j3 = 0;
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d3 = 1;
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while (1)
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{
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while (1) {
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TIM3_CCR1 = gamma_table_linear[j0];
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j0 += d0;
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if(j0==255) d0=-1;
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if(j0==0) d0=1;
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if (j0 == 255)
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d0 =- 1;
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if (j0 == 0)
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d0 = 1;
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TIM3_CCR2 = gamma_table_1_3[j1];
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j1 += d1;
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if(j1==255) d1=-1;
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if(j1==0) d1=1;
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if (j1 == 255)
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d1 =- 1;
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if (j1 == 0)
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d1 = 1;
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TIM3_CCR3 = gamma_table_2_5[j2];
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j2 += d2;
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if(j2==255) d2=-1;
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if(j2==0) d2=1;
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if (j2 == 255)
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d2 =- 1;
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if (j2 == 0)
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d2 = 1;
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TIM3_CCR4= gamma_table_3_0[j3];
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j3 += d3;
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if(j3==255) d3=-1;
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if(j3==0) d3=1;
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for(i=0; i< 50000; i++){}
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if (j3 == 255)
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d3 =- 1;
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if (j3 == 0)
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d3 = 1;
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for (i = 0; i < 50000; i++);
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}
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#endif
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@ -359,25 +363,32 @@ int main(void)
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d2 = -1;
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j3 = 128;
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d3 = -1;
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while (1)
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{
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while (1) {
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TIM3_CCR1 = GAMMA_TABLE[j0];
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j0 += d0;
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if(j0==255) d0=-1;
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if(j0==0) d0=1;
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if (j0 == 255)
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d0 =- 1;
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if (j0 == 0)
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d0 = 1;
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TIM3_CCR2 = GAMMA_TABLE[j1];
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j1 += d1;
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if(j1==255) d1=-1;
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if(j1==0) d1=1;
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if (j1 == 255)
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d1 =- 1;
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if (j1 == 0)
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d1 = 1;
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TIM3_CCR3 = GAMMA_TABLE[j2];
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j2 += d2;
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if(j2==255) d2=-1;
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if(j2==0) d2=1;
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if (j2 == 255)
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d2 =- 1;
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if (j2 == 0)
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d2 = 1;
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TIM3_CCR4 = GAMMA_TABLE[j3];
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j3 += d3;
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if(j3==255) d3=-1;
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if(j3==0) d3=1;
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for(i=0; i< 10000; i++){}
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if (j3 == 255)
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d3 =- 1;
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if (j3 == 0)
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d3 = 1;
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for (i = 0; i < 10000; i++);
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}
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#endif
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@ -393,25 +404,32 @@ int main(void)
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j = 0;
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k = 0;
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kd = 1;
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while (1)
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{
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while (1) {
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TIM3_CCR1 = GAMMA_TABLE[j0];
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j0 += d0;
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if(j0==255) d0=-1;
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if(j0==19) j0=20;
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if (j0 == 255)
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d0 =- 1;
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if (j0 == 19)
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j0 = 20;
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TIM3_CCR2 = GAMMA_TABLE[j1];
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j1 += d1;
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if(j1==255) d1=-1;
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if(j1==19) j1=20;
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if (j1 == 255)
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d1 =- 1;
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if (j1 == 19)
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j1 = 20;
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TIM3_CCR3 = GAMMA_TABLE[j2];
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j2 += d2;
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if(j2==255) d2=-1;
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if(j2==19) j2=20;
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if (j2 == 255)
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d2 =- 1;
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if (j2 == 19)
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j2 = 20;
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TIM3_CCR4 = GAMMA_TABLE[j3];
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j3 += d3;
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if(j3==255) d3=-1;
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if(j3==19) j3=20;
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for(i=0; i< 5000; i++){}
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if (j3 == 255)
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d3 =- 1;
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if (j3 == 19)
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j3 = 20;
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for (i = 0; i < 5000; i++);
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j++;
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if (j == 100) {
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j = 0;
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@ -429,8 +447,10 @@ int main(void)
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j3 = 255;
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break;
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}
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if(k==3) kd=-1;
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if(k==0) kd=1;
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if (k == 3)
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kd =- 1;
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if (k == 0)
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kd = 1;
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}
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}
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#endif
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