New branch for SoftPWM feature
This commit is contained in:
Kai Ryu
parent
819800ec35
commit
41182d2b35
@ -58,10 +58,18 @@ ifdef SLEEP_LED_ENABLE
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OPT_DEFS += -DNO_SUSPEND_POWER_DOWN
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endif
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ifdef SOFTPWM_LED_ENABLE
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SRC += $(COMMON_DIR)/softpwm_led.c
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OPT_DEFS += -DSOFTPWM_LED_ENABLE
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ifdef BREATHING_LED_ENABLE
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OPT_DEFS += -DBREATHING_LED_ENABLE
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endif
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else
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ifdef BREATHING_LED_ENABLE
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SRC += $(COMMON_DIR)/breathing_led.c
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OPT_DEFS += -DBREATHING_LED_ENABLE
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endif
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endif
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ifdef BACKLIGHT_ENABLE
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SRC += $(COMMON_DIR)/backlight.c
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@ -31,7 +31,11 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include "bootmagic.h"
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#include "eeconfig.h"
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#include "backlight.h"
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#ifdef SOFTPWM_LED_ENABLE
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#include "softpwm_led.h"
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#else
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#include "breathing_led.h"
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#endif
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#include "keymap_in_eeprom.h"
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#ifdef MOUSEKEY_ENABLE
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# include "mousekey.h"
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@ -82,6 +86,10 @@ void keyboard_init(void)
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backlight_init();
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#endif
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#ifdef SOFTPWM_LED_ENABLE
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softpwm_led_init();
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#endif
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#ifdef BREATHING_LED_ENABLE
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breathing_led_init();
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#endif
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155
common/softpwm_led.c
Normal file
155
common/softpwm_led.c
Normal file
@ -0,0 +1,155 @@
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#include <avr/io.h>
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#include <avr/interrupt.h>
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#include "led.h"
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#include "softpwm_led.h"
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#include "debug.h"
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#define SOFTPWM_LED_FREQ 64
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#define SOFTPWM_LED_TIMER_TOP F_CPU / (256 * SOFTPWM_LED_FREQ)
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uint8_t softpwm_ocr = 0;
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uint8_t softpwm_ocr_buff = 0;
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void softpwm_led_init(void)
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{
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#ifdef SOFTPWM_LED_TIMER3
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/* Timer3 setup */
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/* CTC mode */
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TCCR3B |= (1<<WGM32);
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/* Clock selelct: clk/8 */
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TCCR3B |= (1<<CS30);
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/* Set TOP value */
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uint8_t sreg = SREG;
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cli();
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OCR3AH = (SOFTPWM_LED_TIMER_TOP >> 8) & 0xff;
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OCR3AL = SOFTPWM_LED_TIMER_TOP & 0xff;
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SREG = sreg;
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#else
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/* Timer1 setup */
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/* CTC mode */
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TCCR1B |= (1<<WGM12);
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/* Clock selelct: clk/8 */
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TCCR1B |= (1<<CS10);
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/* Set TOP value */
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uint8_t sreg = SREG;
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cli();
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OCR1AH = (SOFTPWM_LED_TIMER_TOP >> 8) & 0xff;
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OCR1AL = SOFTPWM_LED_TIMER_TOP & 0xff;
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SREG = sreg;
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#endif
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}
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void softpwm_led_enable(void)
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{
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/* Enable Compare Match Interrupt */
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#ifdef SOFTPWM_LED_TIMER3
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TIMSK3 |= (1<<OCIE3A);
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dprintf("softpwm led on: %u\n", TIMSK3 & (1<<OCIE3A));
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#else
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TIMSK1 |= (1<<OCIE1A);
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dprintf("softpwm led on: %u\n", TIMSK1 & (1<<OCIE1A));
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#endif
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}
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void softpwm_led_disable(void)
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{
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/* Disable Compare Match Interrupt */
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#ifdef SOFTPWM_LED_TIMER3
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TIMSK3 &= ~(1<<OCIE3A);
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dprintf("softpwm led off: %u\n", TIMSK3 & (1<<OCIE3A));
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#else
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TIMSK1 &= ~(1<<OCIE1A);
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dprintf("softpwm led off: %u\n", TIMSK1 & (1<<OCIE1A));
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#endif
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}
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void softpwm_led_toggle(void)
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{
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/* Disable Compare Match Interrupt */
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#ifdef SOFTPWM_LED_TIMER3
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TIMSK3 ^= (1<<OCIE3A);
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dprintf("softpwm led toggle: %u\n", TIMSK3 & (1<<OCIE3A));
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#else
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TIMSK1 ^= (1<<OCIE1A);
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dprintf("softpwm led toggle: %u\n", TIMSK1 & (1<<OCIE1A));
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#endif
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}
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void softpwm_led_set(uint8_t val) {
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softpwm_ocr_buff = val;
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}
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#ifdef BREATHING_LED_ENABLE
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/* Breathing LED brighness(PWM On period) table
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*
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* http://www.wolframalpha.com/input/?i=Table%5Bfloor%28%28exp%28sin%28x%2F256*2*pi%2B3%2F2*pi%29%29-1%2Fe%29*%28256%2F%28e-1%2Fe%29%29%29%2C+%7Bx%2C0%2C255%2C1%7D%5D
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* Table[floor((exp(sin(x/256*2*pi+3/2*pi))-1/e)*(256/(e-1/e))), {x,0,255,1}]
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* (0..255).each {|x| print ((exp(sin(x/256.0*2*PI+3.0/2*PI))-1/E)*(256/(E-1/E))).to_i, ', ' }
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*/
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static const uint8_t breathing_table[256] PROGMEM = {
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 8, 8, 9, 10, 11, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 25, 26, 27, 29, 30, 32, 34, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 56, 58, 61, 63, 66, 68, 71, 74, 77, 80, 83, 86, 89, 92, 95, 98, 102, 105, 108, 112, 116, 119, 123, 126, 130, 134, 138, 142, 145, 149, 153, 157, 161, 165, 169, 173, 176, 180, 184, 188, 192, 195, 199, 203, 206, 210, 213, 216, 219, 223, 226, 228, 231, 234, 236, 239, 241, 243, 245, 247, 248, 250, 251, 252, 253, 254, 255, 255, 255, 255, 255, 255, 255, 254, 253, 252, 251, 250, 248, 247, 245, 243, 241, 239, 236, 234, 231, 228, 226, 223, 219, 216, 213, 210, 206, 203, 199, 195, 192, 188, 184, 180, 176, 173, 169, 165, 161, 157, 153, 149, 145, 142, 138, 134, 130, 126, 123, 119, 116, 112, 108, 105, 102, 98, 95, 92, 89, 86, 83, 80, 77, 74, 71, 68, 66, 63, 61, 58, 56, 53, 51, 49, 47, 45, 43, 41, 39, 37, 35, 34, 32, 30, 29, 27, 26, 25, 23, 22, 21, 19, 18, 17, 16, 15, 14, 13, 12, 11, 11, 10, 9, 8, 8, 7, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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static uint8_t breathing_led_state = 0;
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static uint8_t breathing_led_duration = 0;
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void breathing_led_enable(void)
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{
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breathing_led_state = 1;
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}
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void breathing_led_disable(void)
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{
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breathing_led_state = 0;
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}
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void breathing_led_toggle(void)
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{
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breathing_led_state ^= 1;
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}
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void breathing_led_set_duration(uint8_t dur)
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{
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breathing_led_duration = dur;
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dprintf("breathing led set duration: %u\n", breathing_led_duration);
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}
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#endif
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#ifdef SOFTPWM_LED_TIMER3
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ISR(TIMER3_COMPA_vect)
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#else
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ISR(TIMER1_COMPA_vect)
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#endif
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{
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static uint8_t pwm = 0;
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pwm++;
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// LED on
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if (pwm == 0) {
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softpwm_led_on();
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softpwm_ocr = softpwm_ocr_buff;
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}
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// LED off
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if (pwm == softpwm_ocr) {
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softpwm_led_off();
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}
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#ifdef BREATHING_LED_ENABLE
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static uint8_t count = 0;
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static uint8_t index = 0;
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static uint8_t step = 0;
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if (breathing_led_state) {
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count++;
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if (count > SOFTPWM_LED_FREQ) {
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count = 0;
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step++;
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if (step > breathing_led_duration) {
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step = 0;
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softpwm_ocr_buff = pgm_read_byte(&breathing_table[index]);
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index++;
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}
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}
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}
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#endif
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}
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40
common/softpwm_led.h
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40
common/softpwm_led.h
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@ -0,0 +1,40 @@
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#ifndef SOFTPWM_LED_H
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#define SOFTPWM_LED_H
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#ifdef SOFTPWM_LED_ENABLE
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void softpwm_led_init(void);
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void softpwm_led_enable(void);
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void softpwm_led_disable(void);
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void softpwm_led_toggle(void);
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void softpwm_led_set(uint8_t val);
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void softpwm_led_on(void);
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void softpwm_led_off(void);
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#ifdef BREATHING_LED_ENABLE
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#define breathing_led_init()
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void breathing_led_enable(void);
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void breathing_led_disable(void);
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void breathing_led_toggle(void);
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void breathing_led_set_duration(uint8_t dur);
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#else
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#define breathing_led_init()
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#define breathing_led_enable()
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#define breathing_led_disable()
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#define breathing_led_toggle()
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#define breathing_led_set_duration()
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#endif
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#else
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#define softpwm_led_init()
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#define softpwm_led_enable()
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#define softpwm_led_disable()
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#define softpwm_led_toggle()
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#define softpwm_led_set()
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#define softpwm_led_on()
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#define softpwm_led_off()
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#endif
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#endif
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