working with power limit

build_keyboard.mk

@@ -169,6 +169,12 @@ ifeq ($(strip $(TAP_DANCE_ENABLE)), yes)
 	SRC += $(QUANTUM_DIR)/process_keycode/process_tap_dance.c
 endif
 
+ifeq ($(strip $(PRINTING_ENABLE)), yes)
+	OPT_DEFS += -DPRINTING_ENABLE
+	SRC += $(QUANTUM_DIR)/process_keycode/process_printer.c
+	SRC += $(TMK_DIR)/protocol/serial_uart.c
+endif
+
 ifeq ($(strip $(SERIAL_LINK_ENABLE)), yes)
 	SRC += $(patsubst $(QUANTUM_PATH)/%,%,$(SERIAL_SRC))
 	OPT_DEFS += $(SERIAL_DEFS)

keyboards/ergodox/keymaps/jack/config.h

@@ -6,7 +6,7 @@
 /* ws2812 RGB LED */
 #define RGB_DI_PIN D7
 // #define RGBLIGHT_TIMER
-#define RGBLED_NUM 20     // Number of LEDs
+#define RGBLED_NUM 15     // Number of LEDs
 #define RGBLIGHT_HUE_STEP 8
 #define RGBLIGHT_SAT_STEP 8
 #define RGBLIGHT_VAL_STEP 8

keyboards/ergodox/keymaps/jack/keymap.c

@@ -25,7 +25,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
              KC_NO,     KC_N,   KC_M,   KC_COMM,KC_DOT, KC_SLSH,          KC_ENT,
                                   MO(1), KC_LEFT,KC_DOWN,KC_UP,  KC_RGHT,  
              RGB_TOG,        RGB_HUI,
-             KC_PGUP,
+             RGB_MOD,
              KC_PGDN, KC_SPC,KC_SPC
     ),
 [SYMB] = KEYMAP(

quantum/keymap.h

@@ -174,6 +174,10 @@ enum quantum_keycodes {
     // Right shift, close paren
     KC_RSPC,
 
+    // Printing
+    PRINT_ON,
+    PRINT_OFF,
+
     // always leave at the end
     SAFE_RANGE
 };

quantum/light_ws2812.c

@@ -16,6 +16,122 @@
 #include <util/delay.h>
 #include "debug.h"
 
+#define RGBW_BB_TWI 1
+
+#ifdef RGBW_BB_TWI
+
+// Port for the I2C
+#define I2C_DDR DDRD
+#define I2C_PIN PIND
+#define I2C_PORT PORTD
+
+// Pins to be used in the bit banging
+#define I2C_CLK 0
+#define I2C_DAT 1
+
+#define I2C_DATA_HI()\
+I2C_DDR &= ~ (1 << I2C_DAT);\
+I2C_PORT |= (1 << I2C_DAT);
+#define I2C_DATA_LO()\
+I2C_DDR |= (1 << I2C_DAT);\
+I2C_PORT &= ~ (1 << I2C_DAT);
+
+#define I2C_CLOCK_HI()\
+I2C_DDR &= ~ (1 << I2C_CLK);\
+I2C_PORT |= (1 << I2C_CLK);
+#define I2C_CLOCK_LO()\
+I2C_DDR |= (1 << I2C_CLK);\
+I2C_PORT &= ~ (1 << I2C_CLK);
+
+#define I2C_DELAY 1
+
+void I2C_WriteBit(unsigned char c)
+{
+    if (c > 0)
+    {
+        I2C_DATA_HI();
+    }
+    else
+    {
+        I2C_DATA_LO();
+    }
+
+    I2C_CLOCK_HI();
+    _delay_us(I2C_DELAY);
+
+    I2C_CLOCK_LO();
+    _delay_us(I2C_DELAY);
+
+    if (c > 0)
+    {
+        I2C_DATA_LO();
+    }
+
+    _delay_us(I2C_DELAY);
+}
+
+// Inits bitbanging port, must be called before using the functions below
+//
+void I2C_Init()
+{
+    I2C_PORT &= ~ ((1 << I2C_DAT) | (1 << I2C_CLK));
+
+    I2C_CLOCK_HI();
+    I2C_DATA_HI();
+
+    _delay_us(I2C_DELAY);
+}
+
+// Send a START Condition
+//
+void I2C_Start()
+{
+    // set both to high at the same time
+    I2C_DDR &= ~ ((1 << I2C_DAT) | (1 << I2C_CLK));
+    _delay_us(I2C_DELAY);
+
+    I2C_DATA_LO();
+    _delay_us(I2C_DELAY);
+
+    I2C_CLOCK_LO();
+    _delay_us(I2C_DELAY);
+}
+
+// Send a STOP Condition
+//
+void I2C_Stop()
+{
+    I2C_CLOCK_HI();
+    _delay_us(I2C_DELAY);
+
+    I2C_DATA_HI();
+    _delay_us(I2C_DELAY);
+}
+
+// write a byte to the I2C slave device
+//
+unsigned char I2C_Write(unsigned char c)
+{
+    for (char i = 0; i < 8; i++)
+    {
+        I2C_WriteBit(c & 128);
+
+        c <<= 1;
+    }
+
+    
+    I2C_WriteBit(0);
+    _delay_us(I2C_DELAY);
+    _delay_us(I2C_DELAY);
+  
+    // _delay_us(I2C_DELAY);
+    //return I2C_ReadBit();
+    return 0;
+}
+
+
+#endif
+
 // Setleds for standard RGB
 void inline ws2812_setleds(struct cRGB *ledarray, uint16_t leds)
 {
@@ -41,6 +157,25 @@ void inline ws2812_setleds_rgbw(struct cRGBW *ledarray, uint16_t leds)
   _SFR_IO8((RGB_DI_PIN >> 4) + 1) |= _BV(RGB_DI_PIN & 0xF);
 
   ws2812_sendarray_mask((uint8_t*)ledarray,leds<<2,_BV(RGB_DI_PIN & 0xF));
+
+  #ifdef RGBW_BB_TWI
+    cli();
+    TWCR = 0;
+    I2C_Init();
+    I2C_Start();
+    I2C_Write(0x84);
+    uint16_t datlen = leds<<2;
+    uint8_t curbyte;
+    uint8_t * data = (uint8_t*)ledarray;
+    while (datlen--) {
+      curbyte=*data++;
+      I2C_Write(curbyte % 0x10);
+    }
+    I2C_Stop();
+    sei();
+  #endif
+
+
   _delay_us(80);
 }
 
@@ -123,7 +258,7 @@ void inline ws2812_sendarray_mask(uint8_t *data,uint16_t datlen,uint8_t maskhi)
   cli();
 
   while (datlen--) {
-    curbyte=*data++;
+    curbyte=(*data++) % 0x10;
 
     asm volatile(
     "       ldi   %0,8  \n\t"

quantum/light_ws2812.h

@@ -16,6 +16,13 @@
 #include <avr/io.h>
 #include <avr/interrupt.h>
 //#include "ws2812_config.h"
+#include "i2cmaster.h"
+
+#define LIGHT_I2C 1
+#define LIGHT_I2C_ADDR        0x84
+#define LIGHT_I2C_ADDR_WRITE  ( (LIGHT_I2C_ADDR<<1) | I2C_WRITE )
+#define LIGHT_I2C_ADDR_READ   ( (LIGHT_I2C_ADDR<<1) | I2C_READ  )
+
 
 /*
  *  Structure of the LED array

quantum/quantum.c

@@ -128,6 +128,9 @@ bool process_record_quantum(keyrecord_t *record) {
   #endif
   #ifdef UCIS_ENABLE
     process_ucis(keycode, record) &&
+  #endif
+  #ifdef PRINTING_ENABLE
+    process_printer(keycode, record) &&
   #endif
       true)) {
     return false;

quantum/quantum.h

@@ -59,6 +59,10 @@ extern uint32_t default_layer_state;
 
 #include "process_tap_dance.h"
 
+#ifdef PRINTING_ENABLE
+	#include "process_printer.h"
+#endif
+
 #define SEND_STRING(str) send_string(PSTR(str))
 void send_string(const char *str);