Integrate WS2812 code into quantum core

5 files changed, 853 insertions, 2 deletions

diff --git a/quantum/light_ws2812.c b/quantum/light_ws2812.c
new file mode 100755
index 000000000..f20043067
--- /dev/null
+++ b/quantum/light_ws2812.c
@@ -0,0 +1,181 @@
+/*
+* light weight WS2812 lib V2.0b
+*
+* Controls WS2811/WS2812/WS2812B RGB-LEDs
+* Author: Tim (cpldcpu@gmail.com)
+*
+* Jan 18th, 2014  v2.0b Initial Version
+* Nov 29th, 2015  v2.3  Added SK6812RGBW support
+*
+* License: GNU GPL v2 (see License.txt)
+*/
+
+#include "light_ws2812.h"
+#include <avr/interrupt.h>
+#include <avr/io.h>
+#include <util/delay.h>
+#include "debug.h"
+
+// Setleds for standard RGB
+void inline ws2812_setleds(struct cRGB *ledarray, uint16_t leds)
+{
+   ws2812_setleds_pin(ledarray,leds, _BV(ws2812_pin));
+}
+
+void inline ws2812_setleds_pin(struct cRGB *ledarray, uint16_t leds, uint8_t pinmask)
+{
+  ws2812_DDRREG |= pinmask; // Enable DDR
+  ws2812_sendarray_mask((uint8_t*)ledarray,leds+leds+leds,pinmask);
+  _delay_us(50);
+}
+
+// Setleds for SK6812RGBW
+void inline ws2812_setleds_rgbw(struct cRGBW *ledarray, uint16_t leds)
+{
+  ws2812_DDRREG |= _BV(ws2812_pin); // Enable DDR
+  ws2812_sendarray_mask((uint8_t*)ledarray,leds<<2,_BV(ws2812_pin));
+  _delay_us(80);
+}
+
+void ws2812_sendarray(uint8_t *data,uint16_t datlen)
+{
+  ws2812_sendarray_mask(data,datlen,_BV(ws2812_pin));
+}
+
+/*
+  This routine writes an array of bytes with RGB values to the Dataout pin
+  using the fast 800kHz clockless WS2811/2812 protocol.
+*/
+
+// Timing in ns
+#define w_zeropulse   350
+#define w_onepulse    900
+#define w_totalperiod 1250
+
+// Fixed cycles used by the inner loop
+#define w_fixedlow    2
+#define w_fixedhigh   4
+#define w_fixedtotal  8
+
+// Insert NOPs to match the timing, if possible
+#define w_zerocycles    (((F_CPU/1000)*w_zeropulse          )/1000000)
+#define w_onecycles     (((F_CPU/1000)*w_onepulse    +500000)/1000000)
+#define w_totalcycles   (((F_CPU/1000)*w_totalperiod +500000)/1000000)
+
+// w1 - nops between rising edge and falling edge - low
+#define w1 (w_zerocycles-w_fixedlow)
+// w2   nops between fe low and fe high
+#define w2 (w_onecycles-w_fixedhigh-w1)
+// w3   nops to complete loop
+#define w3 (w_totalcycles-w_fixedtotal-w1-w2)
+
+#if w1>0
+  #define w1_nops w1
+#else
+  #define w1_nops  0
+#endif
+
+// The only critical timing parameter is the minimum pulse length of the "0"
+// Warn or throw error if this timing can not be met with current F_CPU settings.
+#define w_lowtime ((w1_nops+w_fixedlow)*1000000)/(F_CPU/1000)
+#if w_lowtime>550
+   #error "Light_ws2812: Sorry, the clock speed is too low. Did you set F_CPU correctly?"
+#elif w_lowtime>450
+   #warning "Light_ws2812: The timing is critical and may only work on WS2812B, not on WS2812(S)."
+   #warning "Please consider a higher clockspeed, if possible"
+#endif
+
+#if w2>0
+#define w2_nops w2
+#else
+#define w2_nops  0
+#endif
+
+#if w3>0
+#define w3_nops w3
+#else
+#define w3_nops  0
+#endif
+
+#define w_nop1  "nop      \n\t"
+#define w_nop2  "rjmp .+0 \n\t"
+#define w_nop4  w_nop2 w_nop2
+#define w_nop8  w_nop4 w_nop4
+#define w_nop16 w_nop8 w_nop8
+
+void inline ws2812_sendarray_mask(uint8_t *data,uint16_t datlen,uint8_t maskhi)
+{
+  uint8_t curbyte,ctr,masklo;
+  uint8_t sreg_prev;
+
+  masklo	=~maskhi&ws2812_PORTREG;
+  maskhi |=        ws2812_PORTREG;
+  sreg_prev=SREG;
+  cli();
+
+  while (datlen--) {
+    curbyte=*data++;
+
+    asm volatile(
+    "       ldi   %0,8  \n\t"
+    "loop%=:            \n\t"
+    "       out   %2,%3 \n\t"    //  '1' [01] '0' [01] - re
+#if (w1_nops&1)
+w_nop1
+#endif
+#if (w1_nops&2)
+w_nop2
+#endif
+#if (w1_nops&4)
+w_nop4
+#endif
+#if (w1_nops&8)
+w_nop8
+#endif
+#if (w1_nops&16)
+w_nop16
+#endif
+    "       sbrs  %1,7  \n\t"    //  '1' [03] '0' [02]
+    "       out   %2,%4 \n\t"    //  '1' [--] '0' [03] - fe-low
+    "       lsl   %1    \n\t"    //  '1' [04] '0' [04]
+#if (w2_nops&1)
+  w_nop1
+#endif
+#if (w2_nops&2)
+  w_nop2
+#endif
+#if (w2_nops&4)
+  w_nop4
+#endif
+#if (w2_nops&8)
+  w_nop8
+#endif
+#if (w2_nops&16)
+  w_nop16
+#endif
+    "       out   %2,%4 \n\t"    //  '1' [+1] '0' [+1] - fe-high
+#if (w3_nops&1)
+w_nop1
+#endif
+#if (w3_nops&2)
+w_nop2
+#endif
+#if (w3_nops&4)
+w_nop4
+#endif
+#if (w3_nops&8)
+w_nop8
+#endif
+#if (w3_nops&16)
+w_nop16
+#endif
+
+    "       dec   %0    \n\t"    //  '1' [+2] '0' [+2]
+    "       brne  loop%=\n\t"    //  '1' [+3] '0' [+4]
+    :	"=&d" (ctr)
+    :	"r" (curbyte), "I" (_SFR_IO_ADDR(ws2812_PORTREG)), "r" (maskhi), "r" (masklo)
+    );
+  }
+
+  SREG=sreg_prev;
+}
diff --git a/quantum/light_ws2812.h b/quantum/light_ws2812.h
new file mode 100755
index 000000000..54eef22d9
--- /dev/null
+++ b/quantum/light_ws2812.h
@@ -0,0 +1,73 @@
+/*
+ * light weight WS2812 lib include
+ *
+ * Version 2.3  - Nev 29th 2015
+ * Author: Tim (cpldcpu@gmail.com)
+ *
+ * Please do not change this file! All configuration is handled in "ws2812_config.h"
+ *
+ * License: GNU GPL v2 (see License.txt)
+ +
+ */
+
+#ifndef LIGHT_WS2812_H_
+#define LIGHT_WS2812_H_
+
+#include <avr/io.h>
+#include <avr/interrupt.h>
+//#include "ws2812_config.h"
+
+/*
+ *  Structure of the LED array
+ *
+ * cRGB:     RGB  for WS2812S/B/C/D, SK6812, SK6812Mini, SK6812WWA, APA104, APA106
+ * cRGBW:    RGBW for SK6812RGBW
+ */
+
+struct cRGB  { uint8_t g; uint8_t r; uint8_t b; };
+struct cRGBW { uint8_t g; uint8_t r; uint8_t b; uint8_t w;};
+
+
+
+/* User Interface
+ *
+ * Input:
+ *         ledarray:           An array of GRB data describing the LED colors
+ *         number_of_leds:     The number of LEDs to write
+ *         pinmask (optional): Bitmask describing the output bin. e.g. _BV(PB0)
+ *
+ * The functions will perform the following actions:
+ *         - Set the data-out pin as output
+ *         - Send out the LED data
+ *         - Wait 50�s to reset the LEDs
+ */
+
+void ws2812_setleds     (struct cRGB  *ledarray, uint16_t number_of_leds);
+void ws2812_setleds_pin (struct cRGB  *ledarray, uint16_t number_of_leds,uint8_t pinmask);
+void ws2812_setleds_rgbw(struct cRGBW *ledarray, uint16_t number_of_leds);
+
+/*
+ * Old interface / Internal functions
+ *
+ * The functions take a byte-array and send to the data output as WS2812 bitstream.
+ * The length is the number of bytes to send - three per LED.
+ */
+
+void ws2812_sendarray     (uint8_t *array,uint16_t length);
+void ws2812_sendarray_mask(uint8_t *array,uint16_t length, uint8_t pinmask);
+
+
+/*
+ * Internal defines
+ */
+#ifndef CONCAT
+#define CONCAT(a, b)            a ## b
+#endif
+#ifndef CONCAT_EXP
+#define CONCAT_EXP(a, b)   CONCAT(a, b)
+#endif
+
+// #define ws2812_PORTREG  CONCAT_EXP(PORT,ws2812_port)
+// #define ws2812_DDRREG   CONCAT_EXP(DDR,ws2812_port)
+
+#endif /* LIGHT_WS2812_H_ */
diff --git a/quantum/quantum.mk b/quantum/quantum.mk
index df7224178..de93af7e8 100644
--- a/quantum/quantum.mk
+++ b/quantum/quantum.mk
@@ -2,7 +2,7 @@ QUANTUM_DIR = quantum
 
 # # project specific files
 SRC += $(QUANTUM_DIR)/keymap_common.c \
-	$(QUANTUM_DIR)/led.c 
+	$(QUANTUM_DIR)/led.c
 
 # ifdef KEYMAP_FILE
 # ifneq (,$(shell grep USING_MIDI '$(KEYMAP_FILE)'))
@@ -35,6 +35,12 @@ ifdef UNICODE_ENABLE
 	SRC += $(QUANTUM_DIR)/keymap_unicode.c
 endif
 
+ifdef RGBLIGHT_ENABLE
+	SRC += $(QUANTUM_DIR)/light_ws2812.c
+	SRC += $(QUANTUM_DIR)/rgblight.c
+	OPT_DEFS += -DRGBLIGHT_ENABLE
+endif
+
 # Optimize size but this may cause error "relocation truncated to fit"
 #EXTRALDFLAGS = -Wl,--relax
 
@@ -45,4 +51,3 @@ include $(TMK_DIR)/protocol/lufa.mk
 
 include $(TMK_DIR)/common.mk
 include $(TMK_DIR)/rules.mk
-
diff --git a/quantum/rgblight.c b/quantum/rgblight.c
new file mode 100644
index 000000000..552456aae
--- /dev/null
+++ b/quantum/rgblight.c
@@ -0,0 +1,505 @@
+#include <avr/eeprom.h>
+#include <avr/interrupt.h>
+#include <util/delay.h>
+#include "progmem.h"
+#include "timer.h"
+#include "rgblight.h"
+#include "debug.h"
+
+const uint8_t DIM_CURVE[] PROGMEM = {
+	0, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3,
+	3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+	4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6,
+	6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8,
+	8, 8, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 11, 11, 11,
+	11, 11, 12, 12, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 15,
+	15, 15, 16, 16, 16, 16, 17, 17, 17, 18, 18, 18, 19, 19, 19, 20,
+	20, 20, 21, 21, 22, 22, 22, 23, 23, 24, 24, 25, 25, 25, 26, 26,
+	27, 27, 28, 28, 29, 29, 30, 30, 31, 32, 32, 33, 33, 34, 35, 35,
+	36, 36, 37, 38, 38, 39, 40, 40, 41, 42, 43, 43, 44, 45, 46, 47,
+	48, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62,
+	63, 64, 65, 66, 68, 69, 70, 71, 73, 74, 75, 76, 78, 79, 81, 82,
+	83, 85, 86, 88, 90, 91, 93, 94, 96, 98, 99, 101, 103, 105, 107, 109,
+	110, 112, 114, 116, 118, 121, 123, 125, 127, 129, 132, 134, 136, 139, 141, 144,
+	146, 149, 151, 154, 157, 159, 162, 165, 168, 171, 174, 177, 180, 183, 186, 190,
+	193, 196, 200, 203, 207, 211, 214, 218, 222, 226, 230, 234, 238, 242, 248, 255,
+};
+const uint8_t RGBLED_BREATHING_TABLE[] PROGMEM = {0,0,0,0,1,1,1,2,2,3,4,5,5,6,7,9,10,11,12,14,15,17,18,20,21,23,25,27,29,31,33,35,37,40,42,44,47,49,52,54,57,59,62,65,67,70,73,76,79,82,85,88,90,93,97,100,103,106,109,112,115,118,121,124,127,131,134,137,140,143,146,149,152,155,158,162,165,167,170,173,176,179,182,185,188,190,193,196,198,201,203,206,208,211,213,215,218,220,222,224,226,228,230,232,234,235,237,238,240,241,243,244,245,246,248,249,250,250,251,252,253,253,254,254,254,255,255,255,255,255,255,255,254,254,254,253,253,252,251,250,250,249,248,246,245,244,243,241,240,238,237,235,234,232,230,228,226,224,222,220,218,215,213,211,208,206,203,201,198,196,193,190,188,185,182,179,176,173,170,167,165,162,158,155,152,149,146,143,140,137,134,131,128,124,121,118,115,112,109,106,103,100,97,93,90,88,85,82,79,76,73,70,67,65,62,59,57,54,52,49,47,44,42,40,37,35,33,31,29,27,25,23,21,20,18,17,15,14,12,11,10,9,7,6,5,5,4,3,2,2,1,1,1,0,0,0};
+const uint8_t RGBLED_BREATHING_INTERVALS[] PROGMEM = {30, 20, 10, 5};
+const uint8_t RGBLED_RAINBOW_MOOD_INTERVALS[] PROGMEM = {120, 60, 30};
+const uint8_t RGBLED_RAINBOW_SWIRL_INTERVALS[] PROGMEM = {100, 50, 20};
+const uint8_t RGBLED_SNAKE_INTERVALS[] PROGMEM = {100, 50, 20};
+const uint8_t RGBLED_KNIGHT_INTERVALS[] PROGMEM = {100, 50, 20};
+
+rgblight_config_t rgblight_config;
+rgblight_config_t inmem_config;
+struct cRGB led[RGBLED_NUM];
+uint8_t rgblight_inited = 0;
+
+
+void sethsv(uint16_t hue, uint8_t sat, uint8_t val, struct cRGB *led1) {
+	/* convert hue, saturation and brightness ( HSB/HSV ) to RGB
+	The DIM_CURVE is used only on brightness/value and on saturation (inverted).
+	This looks the most natural.
+	*/
+  uint8_t r, g, b;
+
+  val = pgm_read_byte(&DIM_CURVE[val]);
+	sat = 255 - pgm_read_byte(&DIM_CURVE[255 - sat]);
+
+	uint8_t base;
+
+	if (sat == 0) { // Acromatic color (gray). Hue doesn't mind.
+		r = val;
+		g = val;
+		b = val;
+	} else  {
+		base = ((255 - sat) * val) >> 8;
+
+		switch (hue / 60) {
+		case 0:
+			r = val;
+			g = (((val - base)*hue) / 60) + base;
+			b = base;
+			break;
+
+		case 1:
+			r = (((val - base)*(60 - (hue % 60))) / 60) + base;
+			g = val;
+			b = base;
+			break;
+
+		case 2:
+			r = base;
+			g = val;
+			b = (((val - base)*(hue % 60)) / 60) + base;
+			break;
+
+		case 3:
+			r = base;
+			g = (((val - base)*(60 - (hue % 60))) / 60) + base;
+			b = val;
+			break;
+
+		case 4:
+			r = (((val - base)*(hue % 60)) / 60) + base;
+			g = base;
+			b = val;
+			break;
+
+		case 5:
+			r = val;
+			g = base;
+			b = (((val - base)*(60 - (hue % 60))) / 60) + base;
+			break;
+		}
+	}
+  setrgb(r,g,b, led1);
+}
+
+void setrgb(uint8_t r, uint8_t g, uint8_t b, struct cRGB *led1) {
+  (*led1).r = r;
+  (*led1).g = g;
+  (*led1).b = b;
+}
+
+
+uint32_t eeconfig_read_rgblight(void) {
+  return eeprom_read_dword(EECONFIG_RGBLIGHT);
+}
+void eeconfig_write_rgblight(uint32_t val) {
+  eeprom_write_dword(EECONFIG_RGBLIGHT, val);
+}
+void eeconfig_write_rgblight_default(void) {
+	dprintf("eeconfig_write_rgblight_default\n");
+	rgblight_config.enable = 1;
+	rgblight_config.mode = 1;
+	rgblight_config.hue = 200;
+	rgblight_config.sat = 204;
+	rgblight_config.val = 204;
+	eeconfig_write_rgblight(rgblight_config.raw);
+}
+void eeconfig_debug_rgblight(void) {
+	dprintf("rgblight_config eprom\n");
+	dprintf("rgblight_config.enable = %d\n", rgblight_config.enable);
+	dprintf("rghlight_config.mode = %d\n", rgblight_config.mode);
+	dprintf("rgblight_config.hue = %d\n", rgblight_config.hue);
+	dprintf("rgblight_config.sat = %d\n", rgblight_config.sat);
+	dprintf("rgblight_config.val = %d\n", rgblight_config.val);
+}
+
+void rgblight_init(void) {
+  debug_enable = 1; // Debug ON!
+	dprintf("rgblight_init called.\n");
+  rgblight_inited = 1;
+	dprintf("rgblight_init start!\n");
+  if (!eeconfig_is_enabled()) {
+		dprintf("rgblight_init eeconfig is not enabled.\n");
+    eeconfig_init();
+		eeconfig_write_rgblight_default();
+  }
+  rgblight_config.raw = eeconfig_read_rgblight();
+	if (!rgblight_config.mode) {
+		dprintf("rgblight_init rgblight_config.mode = 0. Write default values to EEPROM.\n");
+		eeconfig_write_rgblight_default();
+		rgblight_config.raw = eeconfig_read_rgblight();
+	}
+	eeconfig_debug_rgblight(); // display current eeprom values
+
+	rgblight_timer_init(); // setup the timer
+
+  if (rgblight_config.enable) {
+    rgblight_mode(rgblight_config.mode);
+  }
+}
+
+void rgblight_increase(void) {
+	uint8_t mode;
+  if (rgblight_config.mode < RGBLIGHT_MODES) {
+    mode = rgblight_config.mode + 1;
+  }
+	rgblight_mode(mode);
+}
+
+void rgblight_decrease(void) {
+	uint8_t mode;
+  if (rgblight_config.mode > 1) { //mode will never < 1, if mode is less than 1, eeprom need to be initialized.
+    mode = rgblight_config.mode-1;
+  }
+	rgblight_mode(mode);
+}
+
+void rgblight_step(void) {
+	uint8_t mode;
+  mode = rgblight_config.mode + 1;
+  if (mode > RGBLIGHT_MODES) {
+    mode = 1;
+  }
+	rgblight_mode(mode);
+}
+
+void rgblight_mode(uint8_t mode) {
+	if (!rgblight_config.enable) {
+		return;
+	}
+  if (mode<1) {
+		rgblight_config.mode = 1;
+	} else if (mode > RGBLIGHT_MODES) {
+		rgblight_config.mode = RGBLIGHT_MODES;
+	} else {
+		rgblight_config.mode = mode;
+	}
+  eeconfig_write_rgblight(rgblight_config.raw);
+  dprintf("rgblight mode: %u\n", rgblight_config.mode);
+	if (rgblight_config.mode == 1) {
+		rgblight_timer_disable();
+	} else if (rgblight_config.mode >=2 && rgblight_config.mode <=23) {
+		// MODE 2-5, breathing
+		// MODE 6-8, rainbow mood
+		// MODE 9-14, rainbow swirl
+		// MODE 15-20, snake
+		// MODE 21-23, knight
+		rgblight_timer_enable();
+	}
+  rgblight_sethsv(rgblight_config.hue, rgblight_config.sat, rgblight_config.val);
+}
+
+void rgblight_toggle(void) {
+  rgblight_config.enable ^= 1;
+  eeconfig_write_rgblight(rgblight_config.raw);
+  dprintf("rgblight toggle: rgblight_config.enable = %u\n", rgblight_config.enable);
+	if (rgblight_config.enable) {
+		rgblight_mode(rgblight_config.mode);
+	} else {
+		rgblight_timer_disable();
+		_delay_ms(50);
+		rgblight_set();
+	}
+}
+
+
+void rgblight_increase_hue(void){
+	uint16_t hue;
+  hue = (rgblight_config.hue+RGBLIGHT_HUE_STEP) % 360;
+  rgblight_sethsv(hue, rgblight_config.sat, rgblight_config.val);
+}
+void rgblight_decrease_hue(void){
+	uint16_t hue;
+	if (rgblight_config.hue-RGBLIGHT_HUE_STEP <0 ) {
+		hue = (rgblight_config.hue+360-RGBLIGHT_HUE_STEP) % 360;
+	} else {
+		hue = (rgblight_config.hue-RGBLIGHT_HUE_STEP) % 360;
+	}
+  rgblight_sethsv(hue, rgblight_config.sat, rgblight_config.val);
+}
+void rgblight_increase_sat(void) {
+	uint8_t sat;
+  if (rgblight_config.sat + RGBLIGHT_SAT_STEP > 255) {
+    sat = 255;
+  } else {
+    sat = rgblight_config.sat+RGBLIGHT_SAT_STEP;
+  }
+  rgblight_sethsv(rgblight_config.hue, sat, rgblight_config.val);
+}
+void rgblight_decrease_sat(void){
+	uint8_t sat;
+  if (rgblight_config.sat - RGBLIGHT_SAT_STEP < 0) {
+    sat = 0;
+  } else {
+    sat = rgblight_config.sat-RGBLIGHT_SAT_STEP;
+  }
+  rgblight_sethsv(rgblight_config.hue, sat, rgblight_config.val);
+}
+void rgblight_increase_val(void){
+	uint8_t val;
+  if (rgblight_config.val + RGBLIGHT_VAL_STEP > 255) {
+    val = 255;
+  } else {
+    val = rgblight_config.val+RGBLIGHT_VAL_STEP;
+  }
+  rgblight_sethsv(rgblight_config.hue, rgblight_config.sat, val);
+}
+void rgblight_decrease_val(void) {
+	uint8_t val;
+  if (rgblight_config.val - RGBLIGHT_VAL_STEP < 0) {
+    val = 0;
+  } else {
+    val = rgblight_config.val-RGBLIGHT_VAL_STEP;
+  }
+  rgblight_sethsv(rgblight_config.hue, rgblight_config.sat, val);
+}
+
+void rgblight_sethsv_noeeprom(uint16_t hue, uint8_t sat, uint8_t val){
+	inmem_config.raw = rgblight_config.raw;
+  if (rgblight_config.enable) {
+    struct cRGB tmp_led;
+    sethsv(hue, sat, val, &tmp_led);
+		inmem_config.hue = hue;
+		inmem_config.sat = sat;
+		inmem_config.val = val;
+    // dprintf("rgblight set hue [MEMORY]: %u,%u,%u\n", inmem_config.hue, inmem_config.sat, inmem_config.val);
+    rgblight_setrgb(tmp_led.r, tmp_led.g, tmp_led.b);
+  }
+}
+void rgblight_sethsv(uint16_t hue, uint8_t sat, uint8_t val){
+  if (rgblight_config.enable) {
+		if (rgblight_config.mode == 1) {
+			// same static color
+			rgblight_sethsv_noeeprom(hue, sat, val);
+		} else {
+			// all LEDs in same color
+			if (rgblight_config.mode >= 2 && rgblight_config.mode <= 5) {
+				// breathing mode, ignore the change of val, use in memory value instead
+				val = rgblight_config.val;
+			} else if (rgblight_config.mode >= 6 && rgblight_config.mode <= 14) {
+				// rainbow mood and rainbow swirl, ignore the change of hue
+				hue = rgblight_config.hue;
+			}
+		}
+		rgblight_config.hue = hue;
+		rgblight_config.sat = sat;
+		rgblight_config.val = val;
+		eeconfig_write_rgblight(rgblight_config.raw);
+		dprintf("rgblight set hsv [EEPROM]: %u,%u,%u\n", rgblight_config.hue, rgblight_config.sat, rgblight_config.val);
+  }
+}
+
+void rgblight_setrgb(uint8_t r, uint8_t g, uint8_t b){
+  // dprintf("rgblight set rgb: %u,%u,%u\n", r,g,b);
+  for (uint8_t i=0;i<RGBLED_NUM;i++) {
+    led[i].r = r;
+    led[i].g = g;
+    led[i].b = b;
+  }
+  rgblight_set();
+
+}
+
+void rgblight_set(void) {
+	if (rgblight_config.enable) {
+		ws2812_setleds(led, RGBLED_NUM);
+	} else {
+		for (uint8_t i=0;i<RGBLED_NUM;i++) {
+	    led[i].r = 0;
+	    led[i].g = 0;
+	    led[i].b = 0;
+	  }
+		ws2812_setleds(led, RGBLED_NUM);
+	}
+}
+
+// Animation timer -- AVR Timer3
+void rgblight_timer_init(void) {
+	static uint8_t rgblight_timer_is_init = 0;
+	if (rgblight_timer_is_init) {
+		return;
+	}
+	rgblight_timer_is_init = 1;
+	/* Timer 3 setup */
+	TCCR3B = _BV(WGM32) //CTC mode OCR3A as TOP
+	      | _BV(CS30); //Clock selelct: clk/1
+	/* Set TOP value */
+	uint8_t sreg = SREG;
+	cli();
+	OCR3AH = (RGBLED_TIMER_TOP>>8)&0xff;
+	OCR3AL = RGBLED_TIMER_TOP&0xff;
+	SREG = sreg;
+}
+void rgblight_timer_enable(void) {
+	TIMSK3 |= _BV(OCIE3A);
+	dprintf("TIMER3 enabled.\n");
+}
+void rgblight_timer_disable(void) {
+	TIMSK3 &= ~_BV(OCIE3A);
+	dprintf("TIMER3 disabled.\n");
+}
+void rgblight_timer_toggle(void) {
+	TIMSK3 ^= _BV(OCIE3A);
+	dprintf("TIMER3 toggled.\n");
+}
+
+ISR(TIMER3_COMPA_vect) {
+	// Mode = 1, static light, do nothing here
+	if (rgblight_config.mode>=2 && rgblight_config.mode<=5) {
+		// mode = 2 to 5, breathing mode
+		rgblight_effect_breathing(rgblight_config.mode-2);
+
+	} else if (rgblight_config.mode>=6 && rgblight_config.mode<=8) {
+		rgblight_effect_rainbow_mood(rgblight_config.mode-6);
+	} else if (rgblight_config.mode>=9 && rgblight_config.mode<=14) {
+		rgblight_effect_rainbow_swirl(rgblight_config.mode-9);
+	} else if (rgblight_config.mode>=15 && rgblight_config.mode<=20) {
+		rgblight_effect_snake(rgblight_config.mode-15);
+	} else if (rgblight_config.mode>=21 && rgblight_config.mode<=23) {
+		rgblight_effect_knight(rgblight_config.mode-21);
+	}
+}
+
+// effects
+void rgblight_effect_breathing(uint8_t interval) {
+	static uint8_t pos = 0;
+	static uint16_t last_timer = 0;
+
+	if (timer_elapsed(last_timer)<pgm_read_byte(&RGBLED_BREATHING_INTERVALS[interval])) return;
+	last_timer = timer_read();
+
+	rgblight_sethsv_noeeprom(rgblight_config.hue, rgblight_config.sat, pgm_read_byte(&RGBLED_BREATHING_TABLE[pos]));
+	pos = (pos+1) % 256;
+}
+
+void rgblight_effect_rainbow_mood(uint8_t interval) {
+	static uint16_t current_hue=0;
+	static uint16_t last_timer = 0;
+
+	if (timer_elapsed(last_timer)<pgm_read_byte(&RGBLED_RAINBOW_MOOD_INTERVALS[interval])) return;
+	last_timer = timer_read();
+	rgblight_sethsv_noeeprom(current_hue, rgblight_config.sat, rgblight_config.val);
+	current_hue = (current_hue+1) % 360;
+}
+
+void rgblight_effect_rainbow_swirl(uint8_t interval) {
+	static uint16_t current_hue=0;
+	static uint16_t last_timer = 0;
+	uint16_t hue;
+	uint8_t i;
+	if (timer_elapsed(last_timer)<pgm_read_byte(&RGBLED_RAINBOW_MOOD_INTERVALS[interval/2])) return;
+	last_timer = timer_read();
+	for (i=0; i<RGBLED_NUM; i++) {
+		hue = (360/RGBLED_NUM*i+current_hue)%360;
+		sethsv(hue, rgblight_config.sat, rgblight_config.val, &led[i]);
+	}
+	rgblight_set();
+
+	if (interval % 2) {
+		current_hue = (current_hue+1) % 360;
+	} else {
+		if (current_hue -1 < 0) {
+			current_hue = 359;
+		} else {
+			current_hue = current_hue - 1;
+		}
+
+	}
+}
+void rgblight_effect_snake(uint8_t interval) {
+	static uint8_t pos=0;
+	static uint16_t last_timer = 0;
+	uint8_t i,j;
+	int8_t k;
+	int8_t increament = 1;
+	if (interval%2) increament = -1;
+	if (timer_elapsed(last_timer)<pgm_read_byte(&RGBLED_SNAKE_INTERVALS[interval/2])) return;
+	last_timer = timer_read();
+	for (i=0;i<RGBLED_NUM;i++) {
+		led[i].r=0;
+		led[i].g=0;
+		led[i].b=0;
+		for (j=0;j<RGBLIGHT_EFFECT_SNAKE_LENGTH;j++) {
+			k = pos+j*increament;
+			if (k<0) k = k+RGBLED_NUM;
+			if (i==k) {
+				sethsv(rgblight_config.hue, rgblight_config.sat, (uint8_t)(rgblight_config.val*(RGBLIGHT_EFFECT_SNAKE_LENGTH-j)/RGBLIGHT_EFFECT_SNAKE_LENGTH), &led[i]);
+			}
+		}
+	}
+	rgblight_set();
+	if (increament == 1) {
+		if (pos - 1 < 0) {
+			pos = 13;
+		} else {
+			pos -= 1;
+		}
+	} else {
+		pos = (pos+1)%RGBLED_NUM;
+	}
+
+}
+
+void rgblight_effect_knight(uint8_t interval) {
+	static int8_t pos=0;
+	static uint16_t last_timer = 0;
+	uint8_t i,j,cur;
+	int8_t k;
+	struct cRGB preled[RGBLED_NUM];
+	static int8_t increament = -1;
+	if (timer_elapsed(last_timer)<pgm_read_byte(&RGBLED_KNIGHT_INTERVALS[interval])) return;
+	last_timer = timer_read();
+	for (i=0;i<RGBLED_NUM;i++) {
+		preled[i].r=0;
+		preled[i].g=0;
+		preled[i].b=0;
+		for (j=0;j<RGBLIGHT_EFFECT_KNIGHT_LENGTH;j++) {
+			k = pos+j*increament;
+			if (k<0) k = 0;
+			if (k>=RGBLED_NUM) k=RGBLED_NUM-1;
+			if (i==k) {
+				sethsv(rgblight_config.hue, rgblight_config.sat, rgblight_config.val, &preled[i]);
+			}
+		}
+	}
+	if (RGBLIGHT_EFFECT_KNIGHT_OFFSET) {
+		for (i=0;i<RGBLED_NUM;i++) {
+			cur = (i+RGBLIGHT_EFFECT_KNIGHT_OFFSET) % RGBLED_NUM;
+			led[i].r = preled[cur].r;
+			led[i].g = preled[cur].g;
+			led[i].b = preled[cur].b;
+		}
+	}
+	rgblight_set();
+	if (increament == 1) {
+		if (pos - 1 < 0 - RGBLIGHT_EFFECT_KNIGHT_LENGTH) {
+			pos = 0- RGBLIGHT_EFFECT_KNIGHT_LENGTH;
+			increament = -1;
+		} else {
+			pos -= 1;
+		}
+	} else {
+		if (pos+1>RGBLED_NUM+RGBLIGHT_EFFECT_KNIGHT_LENGTH) {
+			pos = RGBLED_NUM+RGBLIGHT_EFFECT_KNIGHT_LENGTH-1;
+			increament = 1;
+		} else {
+			pos += 1;
+		}
+	}
+
+}
diff --git a/quantum/rgblight.h b/quantum/rgblight.h
new file mode 100644
index 000000000..fd39ead09
--- /dev/null
+++ b/quantum/rgblight.h
@@ -0,0 +1,87 @@
+#ifndef RGBLIGHT_H
+#define RGBLIGHT_H
+
+#ifndef RGBLIGHT_MODES
+#define RGBLIGHT_MODES 23
+#endif
+
+#ifndef RGBLIGHT_EFFECT_SNAKE_LENGTH
+#define RGBLIGHT_EFFECT_SNAKE_LENGTH 7
+#endif
+
+#ifndef RGBLIGHT_EFFECT_KNIGHT_LENGTH
+#define RGBLIGHT_EFFECT_KNIGHT_LENGTH 7
+#endif
+#ifndef RGBLIGHT_EFFECT_KNIGHT_OFFSET
+#define RGBLIGHT_EFFECT_KNIGHT_OFFSET 11
+#endif
+
+#ifndef RGBLIGHT_EFFECT_DUALKNIGHT_LENGTH
+#define RGBLIGHT_EFFECT_DUALKNIGHT_LENGTH 4
+#endif
+
+#ifndef RGBLIGHT_HUE_STEP
+#define RGBLIGHT_HUE_STEP 10
+#endif
+#ifndef RGBLIGHT_SAT_STEP
+#define RGBLIGHT_SAT_STEP 17
+#endif
+#ifndef RGBLIGHT_VAL_STEP
+#define RGBLIGHT_VAL_STEP 17
+#endif
+
+#define RGBLED_TIMER_TOP F_CPU/(256*64)
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "eeconfig.h"
+#include "light_ws2812.h"
+
+typedef union {
+  uint32_t raw;
+  struct {
+    bool     enable  :1;
+    uint8_t  mode    :6;
+    uint16_t hue     :9;
+    uint8_t  sat     :8;
+    uint8_t  val     :8;
+  };
+} rgblight_config_t;
+
+void rgblight_init(void);
+void rgblight_increase(void);
+void rgblight_decrease(void);
+void rgblight_toggle(void);
+void rgblight_step(void);
+void rgblight_mode(uint8_t mode);
+void rgblight_set(void);
+void rgblight_increase_hue(void);
+void rgblight_decrease_hue(void);
+void rgblight_increase_sat(void);
+void rgblight_decrease_sat(void);
+void rgblight_increase_val(void);
+void rgblight_decrease_val(void);
+void rgblight_sethsv(uint16_t hue, uint8_t sat, uint8_t val);
+void rgblight_setrgb(uint8_t r, uint8_t g, uint8_t b);
+
+#define EECONFIG_RGBLIGHT (uint8_t *)7
+uint32_t eeconfig_read_rgblight(void);
+void eeconfig_write_rgblight(uint32_t val);
+void eeconfig_write_rgblight_default(void);
+void eeconfig_debug_rgblight(void);
+
+void sethsv(uint16_t hue, uint8_t sat, uint8_t val, struct cRGB *led1);
+void setrgb(uint8_t r, uint8_t g, uint8_t b, struct cRGB *led1);
+void rgblight_sethsv_noeeprom(uint16_t hue, uint8_t sat, uint8_t val);
+
+void rgblight_timer_init(void);
+void rgblight_timer_enable(void);
+void rgblight_timer_disable(void);
+void rgblight_timer_toggle(void);
+void rgblight_effect_breathing(uint8_t interval);
+void rgblight_effect_rainbow_mood(uint8_t interval);
+void rgblight_effect_rainbow_swirl(uint8_t interval);
+void rgblight_effect_snake(uint8_t interval);
+void rgblight_effect_knight(uint8_t interval);
+
+#endif