diff --git a/examples/Devices/Keyboardio/Imago/.kaleidoscope-builder.conf b/examples/Devices/Keyboardio/Imago/.kaleidoscope-builder.conf
new file mode 100644
index 00000000..4e5f8cbf
--- /dev/null
+++ b/examples/Devices/Keyboardio/Imago/.kaleidoscope-builder.conf
@@ -0,0 +1,2 @@
+BOARD="keyboardio_imago"
+SKETCH="Imago"
diff --git a/examples/Devices/Keyboardio/Imago/Imago.ino b/examples/Devices/Keyboardio/Imago/Imago.ino
new file mode 100644
index 00000000..6142a15c
--- /dev/null
+++ b/examples/Devices/Keyboardio/Imago/Imago.ino
@@ -0,0 +1,192 @@
+/* -*- mode: c++ -*-
+ * Imago.ino -- Example sketch for the Keyboardio Imago
+ * Copyright (C) 2018, 2019 Keyboard.io, Inc
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTabILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "Kaleidoscope.h"
+#include "Kaleidoscope-Macros.h"
+
+// Support for controlling the keyboard's LEDs
+#include "Kaleidoscope-LEDControl.h"
+
+// Support for the "Boot greeting" effect, which pulses the 'LED' button for 10s
+// when the keyboard is connected to a computer (or that computer is powered on)
+#include "Kaleidoscope-LEDEffect-BootGreeting.h"
+
+// Support for LED modes that set all LEDs to a single color
+#include "Kaleidoscope-LEDEffect-SolidColor.h"
+
+// Support for an LED mode that makes all the LEDs 'breathe'
+#include "Kaleidoscope-LEDEffect-Breathe.h"
+
+
+#include "Kaleidoscope-LEDEffect-Chase.h"
+
+// Support for LED modes that pulse the keyboard's LED in a rainbow pattern
+#include "Kaleidoscope-LEDEffect-Rainbow.h"
+
+
+// Support for host power management (suspend & wakeup)
+#include "Kaleidoscope-HostPowerManagement.h"
+
+// Support for magic combos (key chords that trigger an action)
+#include "Kaleidoscope-MagicCombo.h"
+
+// Support for USB quirks, like changing the key state report protocol
+#include "Kaleidoscope-USB-Quirks.h"
+
+
+enum { _QWERTY,
+ };
+
+
+/* *INDENT-OFF* */
+KEYMAPS(
+
+[_QWERTY] = KEYMAP(
+
+Key_F1, Key_Escape, Key_Backtick, Key_1, Key_2, Key_3, Key_4, Key_5, Key_6, Key_7, Key_8, Key_9, Key_0, Key_Minus, Key_Equals, Key_Backspace,
+Key_F2, Key_Tab, Key_Q, Key_W, Key_E, Key_R, Key_T, Key_Y, Key_U, Key_I, Key_O, Key_P, Key_LeftBracket, Key_RightBracket, Key_Backslash,
+Key_F3, Key_Escape, Key_A, Key_S, Key_D, Key_F, Key_G, Key_H, Key_J, Key_K, Key_L, Key_Semicolon, Key_Quote, Key_Enter,
+Key_F4, Key_LeftShift, Key_Z, Key_X, Key_C, Key_V, Key_B, Key_UpArrow, Key_N, Key_M, Key_Comma, Key_Period, Key_Slash, Key_RightShift, Key_LEDEffectNext,
+Key_F5, Key_LeftControl,Key_LeftAlt, Key_LeftGui, Key_Backspace, Key_LeftArrow, Key_DownArrow, Key_RightArrow, Key_Space, Key_RightAlt, Key_Menu, Key_RightControl, Key_LEDEffectNext
+
+
+));
+/* *INDENT-ON* */
+
+
+
+// These 'solid' color effect definitions define a rainbow of
+// LED color modes calibrated to draw 500mA or less on the
+// Keyboardio Model 01.
+
+
+static kaleidoscope::plugin::LEDSolidColor solidRed(160, 0, 0);
+static kaleidoscope::plugin::LEDSolidColor solidOrange(140, 70, 0);
+static kaleidoscope::plugin::LEDSolidColor solidYellow(130, 100, 0);
+static kaleidoscope::plugin::LEDSolidColor solidGreen(0, 160, 0);
+static kaleidoscope::plugin::LEDSolidColor solidBlue(0, 70, 130);
+static kaleidoscope::plugin::LEDSolidColor solidIndigo(0, 0, 170);
+static kaleidoscope::plugin::LEDSolidColor solidViolet(130, 0, 120);
+
+
+/** toggleLedsOnSuspendResume toggles the LEDs off when the host goes to sleep,
+ * and turns them back on when it wakes up.
+ */
+void toggleLedsOnSuspendResume(kaleidoscope::plugin::HostPowerManagement::Event event) {
+ switch (event) {
+ case kaleidoscope::plugin::HostPowerManagement::Suspend:
+ LEDControl.set_all_leds_to({0, 0, 0});
+ LEDControl.syncLeds();
+ LEDControl.paused = true;
+ break;
+ case kaleidoscope::plugin::HostPowerManagement::Resume:
+ LEDControl.paused = false;
+ LEDControl.refreshAll();
+ break;
+ case kaleidoscope::plugin::HostPowerManagement::Sleep:
+ break;
+ }
+}
+
+/** hostPowerManagementEventHandler dispatches power management events (suspend,
+ * resume, and sleep) to other functions that perform action based on these
+ * events.
+ */
+void hostPowerManagementEventHandler(kaleidoscope::plugin::HostPowerManagement::Event event) {
+ toggleLedsOnSuspendResume(event);
+}
+
+/** This 'enum' is a list of all the magic combos used by the Model 01's
+ * firmware The names aren't particularly important. What is important is that
+ * each is unique.
+ *
+ * These are the names of your magic combos. They will be used by the
+ * `USE_MAGIC_COMBOS` call below.
+ */
+enum {
+ // Toggle between Boot (6-key rollover; for BIOSes and early boot) and NKRO
+ // mode.
+ COMBO_TOGGLE_NKRO_MODE
+};
+
+/** A tiny wrapper, to be used by MagicCombo.
+ * This simply toggles the keyboard protocol via USBQuirks, and wraps it within
+ * a function with an unused argument, to match what MagicCombo expects.
+ */
+static void toggleKeyboardProtocol(uint8_t combo_index) {
+ USBQuirks.toggleKeyboardProtocol();
+}
+
+/** Magic combo list, a list of key combo and action pairs the firmware should
+ * recognise.
+ */
+USE_MAGIC_COMBOS({.action = toggleKeyboardProtocol,
+ // Left Fn + Esc + Shift
+ .keys = { R3C6, R2C6, R3C7 }
+ });
+
+
+KALEIDOSCOPE_INIT_PLUGINS(Macros,
+
+ // LEDControl provides support for other LED modes
+ LEDControl,
+
+
+ // The rainbow effect changes the color of all of the keyboard's keys at the same time
+ // running through all the colors of the rainbow.
+ LEDRainbowEffect,
+
+ // The rainbow wave effect lights up your keyboard with all the colors of a rainbow
+ // and slowly moves the rainbow across your keyboard
+ LEDRainbowWaveEffect,
+
+ // The chase effect follows the adventure of a blue pixel which chases a red pixel across
+ // your keyboard. Spoiler: the blue pixel never catches the red pixel
+ LEDChaseEffect,
+
+ // These static effects turn your keyboard's LEDs a variety of colors
+ solidRed, solidOrange, solidYellow, solidGreen, solidBlue, solidIndigo, solidViolet,
+
+ // The breathe effect slowly pulses all of the LEDs on your keyboard
+ LEDBreatheEffect,
+
+ // The HostPowerManagement plugin allows us to turn LEDs off when then host
+ // goes to sleep, and resume them when it wakes up.
+ HostPowerManagement,
+
+ // The MagicCombo plugin lets you use key combinations to trigger custom
+ // actions - a bit like Macros, but triggered by pressing multiple keys at the
+ // same time.
+ MagicCombo,
+
+ // The USBQuirks plugin lets you do some things with USB that we aren't
+ // comfortable - or able - to do automatically, but can be useful
+ // nevertheless. Such as toggling the key report protocol between Boot (used
+ // by BIOSes) and Report (NKRO).
+ USBQuirks
+ );
+
+void setup() {
+ Kaleidoscope.setup();
+ Serial.begin(9600);
+}
+
+void loop() {
+ Kaleidoscope.loop();
+}
diff --git a/examples/Devices/Keyboardio/Imago/Makefile b/examples/Devices/Keyboardio/Imago/Makefile
new file mode 100644
index 00000000..996bde98
--- /dev/null
+++ b/examples/Devices/Keyboardio/Imago/Makefile
@@ -0,0 +1,55 @@
+# This stub makefile for a Kaleidoscope example pulls in all the targets
+# required to build the example
+
+UNAME_S := $(shell uname -s)
+
+ifeq ($(UNAME_S),Darwin)
+SKETCHBOOK_DIR ?= $(HOME)/Documents/Arduino
+PACKAGE_DIR ?= $(HOME)/Library/Arduino15
+else
+SKETCHBOOK_DIR ?= $(HOME)/Arduino
+PACKAGE_DIR ?= $(HOME)/.arduino15
+endif
+
+
+ARDUINO_INSTALLED_ENV=$(shell ls -dt $(PACKAGE_DIR)/packages/keyboardio/hardware/avr 2>/dev/null |head -n 1)
+MANUALLY_INSTALLED_ENV=$(shell ls -dt $(SKETCHBOOK_DIR)/hardware/keyboardio/avr 2>/dev/null |head -n 1)
+
+
+
+ifneq ("$(wildcard $(ARDUINO_INSTALLED_ENV)/boards.txt)","")
+
+ifneq ("$(wildcard $(MANUALLY_INSTALLED_ENV)/boards.txt)","")
+
+$(info ***************************************************************************)
+$(info It appears that you have installed two copies of Kaleidoscope. One copy was)
+$(info installed using Arduino's "Board Manager", while the other was installed by)
+$(info hand, probably using "git".)
+$(info )
+$(info This will likely cause some trouble as you try to build keyboard firmware)
+$(info using Kaleidoscope. You may want to remove either: )
+$(info )
+$(info $(PACKAGE_DIR)/packages/keyboardio/ which was installed using Arduino)
+$(info )
+$(info or)
+$(info )
+$(info $(SKETCHBOOK_DIR)/hardware/keyboardio/ which was installed by hand.)
+$(info )
+$(info ***************************************************************************)
+$(info )
+
+endif
+
+BOARD_HARDWARE_PATH = $(ARDUINO_INSTALLED_ENV)
+KALEIDOSCOPE_PLUGIN_MAKEFILE_DIR ?= build-tools/makefiles/
+KALEIDOSCOPE_BUILDER_DIR ?= $(ARDUINO_INSTALLED_ENV)/libraries/Kaleidoscope/bin/
+
+
+
+endif
+
+
+BOARD_HARDWARE_PATH ?= $(SKETCHBOOK_DIR)/hardware
+KALEIDOSCOPE_PLUGIN_MAKEFILE_DIR ?= keyboardio/avr/build-tools/makefiles/
+
+include $(BOARD_HARDWARE_PATH)/$(KALEIDOSCOPE_PLUGIN_MAKEFILE_DIR)/rules.mk
diff --git a/src/Kaleidoscope-Hardware-Keyboardio-Imago.h b/src/Kaleidoscope-Hardware-Keyboardio-Imago.h
new file mode 100644
index 00000000..5d92bd63
--- /dev/null
+++ b/src/Kaleidoscope-Hardware-Keyboardio-Imago.h
@@ -0,0 +1,21 @@
+/* -*- mode: c++ -*-
+ * Kaleidoscope-Hardware-Keyboardio-Imago -- Keyboardio Imago hardware support for Kaleidoscope
+ * Copyright (C) 2018, 2019 Keyboard.io, Inc
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+#pragma once
+
+#include "kaleidoscope/device/keyboardio/Imago.h"
diff --git a/src/kaleidoscope/device/keyboardio/Imago.cpp b/src/kaleidoscope/device/keyboardio/Imago.cpp
new file mode 100644
index 00000000..575d4d96
--- /dev/null
+++ b/src/kaleidoscope/device/keyboardio/Imago.cpp
@@ -0,0 +1,191 @@
+/* -*- mode: c++ -*-
+ * Kaleidoscope-Hardware-Keyboardio-Imago -- Imago hardware support for Kaleidoscope
+ * Copyright (C) 2018, 2019 Keyboard.io, Inc
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of version 3 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+#ifdef ARDUINO_AVR_KEYBOARDIO_IMAGO
+
+#include
+
+extern "C" {
+#include "twi.h"
+}
+
+#define ELEMENTS(arr) (sizeof(arr) / sizeof((arr)[0]))
+
+#define LED_DRIVER_ADDR 0x30
+
+namespace kaleidoscope {
+namespace device {
+namespace keyboardio {
+
+static constexpr uint8_t CMD_SET_REGISTER = 0xFD;
+static constexpr uint8_t CMD_WRITE_ENABLE = 0xFE;
+static constexpr uint8_t WRITE_ENABLE_ONCE = 0b11000101;
+
+static constexpr uint8_t LED_REGISTER_PWM0 = 0x00;
+static constexpr uint8_t LED_REGISTER_PWM1 = 0x01;
+static constexpr uint8_t LED_REGISTER_DATA0 = 0x02;
+static constexpr uint8_t LED_REGISTER_DATA1 = 0x03;
+static constexpr uint8_t LED_REGISTER_CONTROL = 0x04;
+
+static constexpr uint8_t LED_REGISTER_PWM0_SIZE = 0xB4;
+static constexpr uint8_t LED_REGISTER_PWM1_SIZE = 0xAB;
+static constexpr uint8_t LED_REGISTER_DATA0_SIZE = 0xB4;
+static constexpr uint8_t LED_REGISTER_DATA1_SIZE = 0xAB;
+
+static constexpr uint8_t LED_REGISTER_DATA_LARGEST = LED_REGISTER_DATA0_SIZE;
+
+AVR_KEYSCANNER_BOILERPLATE
+
+bool ImagoLEDDriver::isLEDChanged = true;
+cRGB ImagoLEDDriver::led_data[];
+
+#define NOLED 254
+
+static constexpr uint8_t key_led_map[5][16] PROGMEM = {
+ { 104, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 115, 12, 116},
+ { 91, 13, NOLED, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 102, 15, 103},
+ { 78, 26, 27, 28, 29, 30, 31, NOLED, 33, 34, 35, 36, 37, 89, 38, NOLED},
+ { 65, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, NOLED, 90},
+ { 52, 66, 53, 54, NOLED, 56, 57, 71, 59, NOLED, 61, 62, 63, 64, NOLED, 77}
+};
+
+void ImagoLEDDriver::setup() {
+ setAllPwmTo(0xFF);
+ selectRegister(LED_REGISTER_CONTROL);
+ twiSend(LED_DRIVER_ADDR, 0x01, 0xFF); //global current
+ twiSend(LED_DRIVER_ADDR, 0x00, 0x01); //normal operation
+}
+
+void ImagoLEDDriver::twiSend(uint8_t addr, uint8_t Reg_Add, uint8_t Reg_Dat) {
+ uint8_t data[] = {Reg_Add, Reg_Dat };
+ uint8_t result = twi_writeTo(addr, data, ELEMENTS(data), 1, 0);
+}
+
+void ImagoLEDDriver::unlockRegister(void) {
+ twiSend(LED_DRIVER_ADDR, CMD_WRITE_ENABLE, WRITE_ENABLE_ONCE); //unlock
+}
+
+void ImagoLEDDriver::selectRegister(uint8_t page) {
+ // Registers automatically get locked at startup and after a given write
+ // It'd be nice to disable that.
+ unlockRegister();
+ twiSend(LED_DRIVER_ADDR, CMD_SET_REGISTER, page);
+}
+
+void ImagoLEDDriver::setCrgbAt(uint8_t i, cRGB crgb) {
+ if (!Kaleidoscope.device().LEDs().isValid(i))
+ return;
+
+ cRGB oldColor = getCrgbAt(i);
+ isLEDChanged |= !(oldColor.r == crgb.r && oldColor.g == crgb.g && oldColor.b == crgb.b);
+
+ led_data[i] = crgb;
+}
+
+uint8_t ImagoLEDDriver::getLedIndex(uint8_t key_offset) {
+ return pgm_read_byte(key_led_map + key_offset);
+}
+
+cRGB ImagoLEDDriver::getCrgbAt(uint8_t i) {
+ if (!Kaleidoscope.device().LEDs().isValid(i))
+ return {0, 0, 0};
+
+ return led_data[i];
+}
+
+void ImagoLEDDriver::syncLeds() {
+// if (!isLEDChanged)
+// return;
+
+ uint8_t data[LED_REGISTER_DATA_LARGEST + 1];
+ data[0] = 0;// the address of the first byte to copy in
+ uint8_t last_led = 0;
+
+ // Write the first LED bank
+ selectRegister(LED_REGISTER_DATA0);
+
+ for (auto i = 1; i < LED_REGISTER_DATA0_SIZE; i += 3) {
+ data[i] = led_data[last_led].b;
+ data[i + 1] = led_data[last_led].g;
+ data[i + 2] = led_data[last_led].r;
+ last_led++;
+ }
+
+ twi_writeTo(LED_DRIVER_ADDR, data, LED_REGISTER_DATA0_SIZE + 1, 1, 0);
+
+ // Don't reset "Last LED", because this is just us picking up from the last bank
+ // TODO - we don't use all 117 LEDs on the Imago, so we can probably stop writing earlier
+ // Write the second LED bank
+
+ // For space efficiency, we reuse the LED sending buffer
+ // The twi library should never send more than the number of elements
+ // we say to send it.
+ // The page 2 version has 180 elements. The page 3 version has only 171.
+
+ selectRegister(LED_REGISTER_DATA1);
+
+ for (auto i = 1; i < LED_REGISTER_DATA1_SIZE; i += 3) {
+ data[i] = led_data[last_led].b;
+ data[i + 1] = led_data[last_led].g;
+ data[i + 2] = led_data[last_led].r;
+ last_led++;
+ }
+
+ twi_writeTo(LED_DRIVER_ADDR, data, LED_REGISTER_DATA1_SIZE + 1, 1, 0);
+
+ isLEDChanged = false;
+}
+
+
+void ImagoLEDDriver::setAllPwmTo(uint8_t step) {
+ selectRegister(LED_REGISTER_PWM0);
+
+ uint8_t data[0xB5] = {};
+ data[0] = 0;
+ // PWM Register 0 is 0x00 to 0xB3
+ for (auto i = 1; i <= 0xB4; i++) {
+ data[i] = step;
+
+ }
+ twi_writeTo(LED_DRIVER_ADDR, data, 0xB5, 1, 0);
+
+ selectRegister(LED_REGISTER_PWM1);
+ // PWM Register 1 is 0x00 to 0xAA
+ for (auto i = 1; i <= LED_REGISTER_PWM1_SIZE; i++) {
+ data[i] = step;
+
+ }
+ twi_writeTo(LED_DRIVER_ADDR, data, 0xAC, 1, 0);
+}
+
+void Imago::setup() {
+ digitalWrite(MOSI, HIGH);
+ digitalWrite(SS, HIGH);
+ uint8_t twi_uninitialized = 1;
+ if (twi_uninitialized--) {
+ twi_init();
+ }
+ TWBR = 10;
+
+ kaleidoscope::device::ATMega32U4Keyboard::setup();
+}
+
+}
+}
+}
+
+#endif
diff --git a/src/kaleidoscope/device/keyboardio/Imago.h b/src/kaleidoscope/device/keyboardio/Imago.h
new file mode 100644
index 00000000..3df5e53c
--- /dev/null
+++ b/src/kaleidoscope/device/keyboardio/Imago.h
@@ -0,0 +1,102 @@
+/* -*- mode: c++ -*-
+ * Kaleidoscope-Hardware-Keyboardio-Imago -- Imago hardware support for Kaleidoscope
+ * Copyright (C) 2018, 2019 Keyboard.io, Inc
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of version 3 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+#pragma once
+
+#ifdef ARDUINO_AVR_KEYBOARDIO_IMAGO
+
+#include
+
+struct cRGB {
+ uint8_t b;
+ uint8_t g;
+ uint8_t r;
+};
+
+#define CRGB(r,g,b) (cRGB){b, g, r}
+
+#include "kaleidoscope/driver/keyscanner/AVR.h"
+#include "kaleidoscope/driver/led/Base.h"
+#include "kaleidoscope/driver/bootloader/avr/Caterina.h"
+#include "kaleidoscope/device/ATMega32U4Keyboard.h"
+
+namespace kaleidoscope {
+namespace device {
+namespace keyboardio {
+
+struct ImagoLEDDriverProps: public kaleidoscope::driver::led::BaseProps {
+ static constexpr uint8_t led_count = 78;
+};
+
+class ImagoLEDDriver : public kaleidoscope::driver::led::Base {
+ public:
+ static void setup();
+ static void syncLeds();
+ static void setCrgbAt(uint8_t i, cRGB crgb);
+ static cRGB getCrgbAt(uint8_t i);
+ static uint8_t getLedIndex(uint8_t key_offset);
+
+ static cRGB led_data[117]; // 117 is the number of LEDs the chip drives
+ // until we clean stuff up a bit, it's easiest to just have the whole struct around
+
+ private:
+ static bool isLEDChanged;
+ static void selectRegister(uint8_t);
+ static void unlockRegister();
+ static void setAllPwmTo(uint8_t);
+ static void twiSend(uint8_t addr, uint8_t Reg_Add, uint8_t Reg_Dat);
+};
+
+struct ImagoProps : kaleidoscope::device::ATMega32U4KeyboardProps {
+ struct KeyScannerProps : public kaleidoscope::driver::keyscanner::AVRProps {
+ AVR_KEYSCANNER_PROPS(
+ ROW_PIN_LIST({ PIN_F6, PIN_F5, PIN_F4, PIN_F1, PIN_F0}),
+ COL_PIN_LIST({ PIN_B2, PIN_B7, PIN_E2, PIN_C7, PIN_C6, PIN_B6, PIN_B5, PIN_B4, PIN_D7, PIN_D6, PIN_D4, PIN_D5, PIN_D3, PIN_D2, PIN_E6, PIN_F7})
+ );
+ };
+ typedef kaleidoscope::driver::keyscanner::AVR KeyScanner;
+ typedef ImagoLEDDriverProps LEDDriverProps;
+ typedef ImagoLEDDriver LEDDriver;
+ typedef kaleidoscope::driver::bootloader::avr::Caterina BootLoader;
+};
+
+class Imago: public kaleidoscope::device::ATMega32U4Keyboard {
+ public:
+ void setup();
+};
+
+#define PER_KEY_DATA(dflt, \
+ R0C0, R0C1, R0C2, R0C3, R0C4, R0C5, R0C6, R0C7, R0C8, R0C9, R0C10, R0C11, R0C12, R0C13, R0C14, R0C15, \
+ R1C0, R1C1, R1C3, R1C4, R1C5, R1C6, R1C7, R1C8, R1C9, R1C10, R1C11, R1C12, R1C13, R1C14, R1C15, \
+ R2C0, R2C1, R2C2, R2C3, R2C4, R2C5, R2C6, R2C8, R2C9, R2C10, R2C11, R2C12, R2C13, R2C14, \
+ R3C0, R3C1, R3C2, R3C3, R3C4, R3C5, R3C6, R3C7, R3C8, R3C9, R3C10, R3C11, R3C12, R3C13, R3C15, \
+ R4C0, R4C1, R4C2, R4C3, R4C5, R4C6, R4C7, R4C8, R4C10, R4C11, R4C12, R4C13, R4C15 \
+ ,... ) \
+ R0C0, R0C1, R0C2, R0C3, R0C4, R0C5, R0C6, R0C7, R0C8, R0C9, R0C10, R0C11, R0C12, R0C13, R0C14, R0C15, \
+ R1C0, R1C1, XXX, R1C3, R1C4, R1C5, R1C6, R1C7, R1C8, R1C9, R1C10, R1C11, R1C12, R1C13, R1C14, R1C15, \
+ R2C0, R2C1, R2C2, R2C3, R2C4, R2C5, R2C6, XXX, R2C8, R2C9, R2C10, R2C11, R2C12, R2C13, R2C14, XXX , \
+ R3C0, R3C1, R3C2, R3C3, R3C4, R3C5, R3C6, R3C7, R3C8, R3C9, R3C10, R3C11, R3C12, R3C13, XXX, R3C15, \
+ R4C0, R4C1, R4C2, R4C3, XXX, R4C5, R4C6, R4C7, R4C8, XXX, R4C10, R4C11, R4C12, R4C13, XXX, R4C15
+
+}
+}
+
+typedef kaleidoscope::device::keyboardio::Imago Device;
+
+}
+
+#endif
diff --git a/src/kaleidoscope/device/keyboardio/twi.c b/src/kaleidoscope/device/keyboardio/twi.c
new file mode 100644
index 00000000..f1c8eb65
--- /dev/null
+++ b/src/kaleidoscope/device/keyboardio/twi.c
@@ -0,0 +1,561 @@
+/*
+ twi.c - TWI/I2C library for Wiring & Arduino
+ Copyright (c) 2006 Nicholas Zambetti. All right reserved.
+
+ This library is free software: you can redistribute it and/or modify it under
+ the terms of the GNU Lesser General Public License as published by the Free
+ Software Foundation, either version 3 of the License, or (at your option) any
+ later version.
+
+ This library is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
+ details.
+
+ You should have received a copy of the GNU Lesser General Public License along
+ with this program. If not, see .
+
+ Modified 2012 by Todd Krein (todd@krein.org) to implement repeated starts
+*/
+
+#define ENABLE_TWI_SLAVE_MODE 0
+
+#include
+#include
+#include
+#include
+#include
+#include
+// #include "Arduino.h" // for digitalWrite
+
+#define true 1
+#define false 0
+
+
+#ifndef cbi
+#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
+#endif
+
+#ifndef sbi
+#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))
+#endif
+
+#include "pins_arduino.h"
+#include "twi.h"
+
+static volatile uint8_t twi_state;
+static volatile uint8_t twi_slarw;
+static volatile uint8_t twi_sendStop; // should the transaction end with a stop
+static volatile uint8_t twi_inRepStart; // in the middle of a repeated start
+
+static void (*twi_onSlaveTransmit)(void);
+static void (*twi_onSlaveReceive)(uint8_t*, int);
+
+static uint8_t twi_masterBuffer[TWI_BUFFER_LENGTH];
+static volatile uint8_t twi_masterBufferIndex;
+static volatile uint8_t twi_masterBufferLength;
+
+static uint8_t twi_txBuffer[TWI_BUFFER_LENGTH];
+static volatile uint8_t twi_txBufferIndex;
+static volatile uint8_t twi_txBufferLength;
+
+#if ENABLE_TWI_SLAVE_MODE
+static uint8_t twi_rxBuffer[TWI_BUFFER_LENGTH];
+static volatile uint8_t twi_rxBufferIndex;
+#endif
+
+static volatile uint8_t twi_error;
+
+/*
+ * Function twi_init
+ * Desc readys twi pins and sets twi bitrate
+ * Input none
+ * Output none
+ */
+void twi_init(void) {
+ // initialize state
+ twi_state = TWI_READY;
+ twi_sendStop = true; // default value
+ twi_inRepStart = false;
+
+ // activate internal pullups for twi.
+ // digitalWrite(SDA, 1);
+ PORTD |= _BV(0);
+ // digitalWrite(SCL, 1);
+ PORTD |= _BV(1);
+
+ // initialize twi prescaler and bit rate
+ cbi(TWSR, TWPS0);
+ cbi(TWSR, TWPS1);
+ TWBR = ((F_CPU / TWI_FREQ) - 16) / 2;
+
+ /* twi bit rate formula from atmega128 manual pg 204
+ SCL Frequency = CPU Clock Frequency / (16 + (2 * TWBR))
+ note: TWBR should be 10 or higher for master mode
+ It is 72 for a 16mhz Wiring board with 100kHz TWI */
+
+ // enable twi module, acks, and twi interrupt
+ TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWEA);
+}
+
+/*
+ * Function twi_disable
+ * Desc disables twi pins
+ * Input none
+ * Output none
+ */
+void twi_disable(void) {
+ // disable twi module, acks, and twi interrupt
+ TWCR &= ~(_BV(TWEN) | _BV(TWIE) | _BV(TWEA));
+
+ // deactivate internal pullups for twi.
+ // digitalWrite(SDA, 0);
+ PORTD &= ~_BV(0);
+ // digitalWrite(SCL, 0);
+ PORTD &= ~_BV(1);
+}
+
+/*
+ * Function twi_slaveInit
+ * Desc sets slave address and enables interrupt
+ * Input none
+ * Output none
+ */
+void twi_setAddress(uint8_t address) {
+ // set twi slave address (skip over TWGCE bit)
+ TWAR = address << 1;
+}
+
+/*
+ * Function twi_setClock
+ * Desc sets twi bit rate
+ * Input Clock Frequency
+ * Output none
+ */
+void twi_setFrequency(uint32_t frequency) {
+ TWBR = ((F_CPU / frequency) - 16) / 2;
+
+ /* twi bit rate formula from atmega128 manual pg 204
+ SCL Frequency = CPU Clock Frequency / (16 + (2 * TWBR))
+ note: TWBR should be 10 or higher for master mode
+ It is 72 for a 16mhz Wiring board with 100kHz TWI */
+}
+
+/*
+ * Function twi_readFrom
+ * Desc attempts to become twi bus master and read a
+ * series of bytes from a device on the bus
+ * Input address: 7bit i2c device address
+ * data: pointer to byte array
+ * length: number of bytes to read into array
+ * sendStop: Boolean indicating whether to send a stop at the end
+ * Output number of bytes read
+ */
+uint8_t twi_readFrom(uint8_t address, uint8_t* data, uint8_t length, uint8_t sendStop) {
+ uint8_t i;
+
+ // ensure data will fit into buffer
+ if (TWI_BUFFER_LENGTH < length) {
+ return 0;
+ }
+
+ // wait until twi is ready, become master receiver
+ while (TWI_READY != twi_state) {
+ continue;
+ }
+ twi_state = TWI_MRX;
+ twi_sendStop = sendStop;
+ // reset error state (0xFF.. no error occured)
+ twi_error = 0xFF;
+
+ // initialize buffer iteration vars
+ twi_masterBufferIndex = 0;
+ twi_masterBufferLength = length - 1; // This is not intuitive, read on...
+ // On receive, the previously configured ACK/NACK setting is transmitted in
+ // response to the received byte before the interrupt is signalled.
+ // Therefor we must actually set NACK when the _next_ to last byte is
+ // received, causing that NACK to be sent in response to receiving the last
+ // expected byte of data.
+
+ // build sla+w, slave device address + w bit
+ twi_slarw = TW_READ;
+ twi_slarw |= address << 1;
+
+ if (true == twi_inRepStart) {
+ // if we're in the repeated start state, then we've already sent the start,
+ // (@@@ we hope), and the TWI statemachine is just waiting for the address byte.
+ // We need to remove ourselves from the repeated start state before we enable interrupts,
+ // since the ISR is ASYNC, and we could get confused if we hit the ISR before cleaning
+ // up. Also, don't enable the START interrupt. There may be one pending from the
+ // repeated start that we sent ourselves, and that would really confuse things.
+ twi_inRepStart = false; // remember, we're dealing with an ASYNC ISR
+ do {
+ TWDR = twi_slarw;
+ } while (TWCR & _BV(TWWC));
+ TWCR = _BV(TWINT) | _BV(TWEA) | _BV(TWEN) | _BV(TWIE); // enable INTs, but not START
+ } else
+ // send start condition
+ TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWEA) | _BV(TWINT) | _BV(TWSTA);
+
+ // wait for read operation to complete
+ while (TWI_MRX == twi_state) {
+ continue;
+ }
+
+ if (twi_masterBufferIndex < length)
+ length = twi_masterBufferIndex;
+
+ // copy twi buffer to data
+ for (i = 0; i < length; ++i) {
+ data[i] = twi_masterBuffer[i];
+ }
+
+ return length;
+}
+
+/*
+ * Function twi_writeTo
+ * Desc attempts to become twi bus master and write a
+ * series of bytes to a device on the bus
+ * Input address: 7bit i2c device address
+ * data: pointer to byte array
+ * length: number of bytes in array
+ * wait: boolean indicating to wait for write or not
+ * sendStop: boolean indicating whether or not to send a stop at the end
+ * Output 0 .. success
+ * 1 .. length to long for buffer
+ * 2 .. address send, NACK received
+ * 3 .. data send, NACK received
+ * 4 .. other twi error (lost bus arbitration, bus error, ..)
+ */
+uint8_t twi_writeTo(uint8_t address, uint8_t* data, uint8_t length, uint8_t wait, uint8_t sendStop) {
+ uint8_t i;
+
+ // ensure data will fit into buffer
+ if (TWI_BUFFER_LENGTH < length) {
+ return 1;
+ }
+
+ // wait until twi is ready, become master transmitter
+ while (TWI_READY != twi_state) {
+ continue;
+ }
+ twi_state = TWI_MTX;
+ twi_sendStop = sendStop;
+ // reset error state (0xFF.. no error occured)
+ twi_error = 0xFF;
+
+ // initialize buffer iteration vars
+ twi_masterBufferIndex = 0;
+ twi_masterBufferLength = length;
+
+ // copy data to twi buffer
+ for (i = 0; i < length; ++i) {
+ twi_masterBuffer[i] = data[i];
+ }
+
+ // build sla+w, slave device address + w bit
+ twi_slarw = TW_WRITE;
+ twi_slarw |= address << 1;
+
+ // if we're in a repeated start, then we've already sent the START
+ // in the ISR. Don't do it again.
+ //
+ if (true == twi_inRepStart) {
+ // if we're in the repeated start state, then we've already sent the start,
+ // (@@@ we hope), and the TWI statemachine is just waiting for the address byte.
+ // We need to remove ourselves from the repeated start state before we enable interrupts,
+ // since the ISR is ASYNC, and we could get confused if we hit the ISR before cleaning
+ // up. Also, don't enable the START interrupt. There may be one pending from the
+ // repeated start that we sent outselves, and that would really confuse things.
+ twi_inRepStart = false; // remember, we're dealing with an ASYNC ISR
+ do {
+ TWDR = twi_slarw;
+ } while (TWCR & _BV(TWWC));
+ TWCR = _BV(TWINT) | _BV(TWEA) | _BV(TWEN) | _BV(TWIE); // enable INTs, but not START
+ } else
+ // send start condition
+ TWCR = _BV(TWINT) | _BV(TWEA) | _BV(TWEN) | _BV(TWIE) | _BV(TWSTA); // enable INTs
+
+ // wait for write operation to complete
+ while (wait && (TWI_MTX == twi_state)) {
+ continue;
+ }
+
+ switch (twi_error) {
+ case 0xFF:
+ return 0; // success
+ case TW_MT_SLA_NACK:
+ return 2; // error: address send, nack received
+ case TW_MT_DATA_NACK:
+ return 3; // error: data send, nack received
+ default:
+ return 4; // other twi error
+ }
+}
+
+/*
+ * Function twi_transmit
+ * Desc fills slave tx buffer with data
+ * must be called in slave tx event callback
+ * Input data: pointer to byte array
+ * length: number of bytes in array
+ * Output 1 length too long for buffer
+ * 2 not slave transmitter
+ * 0 ok
+ */
+uint8_t twi_transmit(const uint8_t* data, uint8_t length) {
+ uint8_t i;
+
+ // ensure data will fit into buffer
+ if (TWI_BUFFER_LENGTH < (twi_txBufferLength + length)) {
+ return 1;
+ }
+
+ // ensure we are currently a slave transmitter
+ if (TWI_STX != twi_state) {
+ return 2;
+ }
+
+ // set length and copy data into tx buffer
+ for (i = 0; i < length; ++i) {
+ twi_txBuffer[twi_txBufferLength + i] = data[i];
+ }
+ twi_txBufferLength += length;
+
+ return 0;
+}
+
+/*
+ * Function twi_attachSlaveRxEvent
+ * Desc sets function called before a slave read operation
+ * Input function: callback function to use
+ * Output none
+ */
+void twi_attachSlaveRxEvent(void (*function)(uint8_t*, int)) {
+ twi_onSlaveReceive = function;
+}
+
+/*
+ * Function twi_attachSlaveTxEvent
+ * Desc sets function called before a slave write operation
+ * Input function: callback function to use
+ * Output none
+ */
+void twi_attachSlaveTxEvent(void (*function)(void)) {
+ twi_onSlaveTransmit = function;
+}
+
+/*
+ * Function twi_reply
+ * Desc sends byte or readys receive line
+ * Input ack: byte indicating to ack or to nack
+ * Output none
+ */
+void twi_reply(uint8_t ack) {
+ // transmit master read ready signal, with or without ack
+ if (ack) {
+ TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWINT) | _BV(TWEA);
+ } else {
+ TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWINT);
+ }
+}
+
+/*
+ * Function twi_stop
+ * Desc relinquishes bus master status
+ * Input none
+ * Output none
+ */
+void twi_stop(void) {
+ // send stop condition
+ TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWEA) | _BV(TWINT) | _BV(TWSTO);
+
+ // wait for stop condition to be exectued on bus
+ // TWINT is not set after a stop condition!
+ while (TWCR & _BV(TWSTO)) {
+ continue;
+ }
+
+ // update twi state
+ twi_state = TWI_READY;
+}
+
+/*
+ * Function twi_releaseBus
+ * Desc releases bus control
+ * Input none
+ * Output none
+ */
+void twi_releaseBus(void) {
+ // release bus
+ TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWEA) | _BV(TWINT);
+
+ // update twi state
+ twi_state = TWI_READY;
+}
+
+ISR(TWI_vect) {
+ switch (TW_STATUS) {
+ // All Master
+ case TW_START: // sent start condition
+ case TW_REP_START: // sent repeated start condition
+ // copy device address and r/w bit to output register and ack
+ TWDR = twi_slarw;
+ twi_reply(1);
+ break;
+
+ // Master Transmitter
+ case TW_MT_SLA_ACK: // slave receiver acked address
+ case TW_MT_DATA_ACK: // slave receiver acked data
+ // if there is data to send, send it, otherwise stop
+ if (twi_masterBufferIndex < twi_masterBufferLength) {
+ // copy data to output register and ack
+ TWDR = twi_masterBuffer[twi_masterBufferIndex++];
+ twi_reply(1);
+ } else {
+ if (twi_sendStop)
+ twi_stop();
+ else {
+ twi_inRepStart = true; // we're gonna send the START
+ // don't enable the interrupt. We'll generate the start, but we
+ // avoid handling the interrupt until we're in the next transaction,
+ // at the point where we would normally issue the start.
+ TWCR = _BV(TWINT) | _BV(TWSTA) | _BV(TWEN) ;
+ twi_state = TWI_READY;
+ }
+ }
+ break;
+ case TW_MT_SLA_NACK: // address sent, nack received
+ twi_error = TW_MT_SLA_NACK;
+ twi_stop();
+ break;
+ case TW_MT_DATA_NACK: // data sent, nack received
+ twi_error = TW_MT_DATA_NACK;
+ twi_stop();
+ break;
+ case TW_MT_ARB_LOST: // lost bus arbitration
+ twi_error = TW_MT_ARB_LOST;
+ twi_releaseBus();
+ break;
+
+ // Master Receiver
+ case TW_MR_DATA_ACK: // data received, ack sent
+ // put byte into buffer
+ twi_masterBuffer[twi_masterBufferIndex++] = TWDR;
+ /* intentionally fall through */
+ case TW_MR_SLA_ACK: // address sent, ack received
+ // ack if more bytes are expected, otherwise nack
+ if (twi_masterBufferIndex < twi_masterBufferLength) {
+ twi_reply(1);
+ } else {
+ twi_reply(0);
+ }
+ break;
+ case TW_MR_DATA_NACK: // data received, nack sent
+ // put final byte into buffer
+ twi_masterBuffer[twi_masterBufferIndex++] = TWDR;
+ if (twi_sendStop)
+ twi_stop();
+ else {
+ twi_inRepStart = true; // we're gonna send the START
+ // don't enable the interrupt. We'll generate the start, but we
+ // avoid handling the interrupt until we're in the next transaction,
+ // at the point where we would normally issue the start.
+ TWCR = _BV(TWINT) | _BV(TWSTA) | _BV(TWEN) ;
+ twi_state = TWI_READY;
+ }
+ break;
+ case TW_MR_SLA_NACK: // address sent, nack received
+ twi_stop();
+ break;
+ // TW_MR_ARB_LOST handled by TW_MT_ARB_LOST case
+
+#if ENABLE_TWI_SLAVE_MODE
+ // Slave Receiver
+ case TW_SR_SLA_ACK: // addressed, returned ack
+ case TW_SR_GCALL_ACK: // addressed generally, returned ack
+ case TW_SR_ARB_LOST_SLA_ACK: // lost arbitration, returned ack
+ case TW_SR_ARB_LOST_GCALL_ACK: // lost arbitration, returned ack
+ // enter slave receiver mode
+ twi_state = TWI_SRX;
+ // indicate that rx buffer can be overwritten and ack
+ twi_rxBufferIndex = 0;
+ twi_reply(1);
+ break;
+ case TW_SR_DATA_ACK: // data received, returned ack
+ case TW_SR_GCALL_DATA_ACK: // data received generally, returned ack
+ // if there is still room in the rx buffer
+ if (twi_rxBufferIndex < TWI_BUFFER_LENGTH) {
+ // put byte in buffer and ack
+ twi_rxBuffer[twi_rxBufferIndex++] = TWDR;
+ twi_reply(1);
+ } else {
+ // otherwise nack
+ twi_reply(0);
+ }
+ break;
+ case TW_SR_STOP: // stop or repeated start condition received
+ // ack future responses and leave slave receiver state
+ twi_releaseBus();
+ // put a null char after data if there's room
+ if (twi_rxBufferIndex < TWI_BUFFER_LENGTH) {
+ twi_rxBuffer[twi_rxBufferIndex] = '\0';
+ }
+ // callback to user defined callback
+ twi_onSlaveReceive(twi_rxBuffer, twi_rxBufferIndex);
+ // since we submit rx buffer to "wire" library, we can reset it
+ twi_rxBufferIndex = 0;
+ break;
+ case TW_SR_DATA_NACK: // data received, returned nack
+ case TW_SR_GCALL_DATA_NACK: // data received generally, returned nack
+ // nack back at master
+ twi_reply(0);
+ break;
+
+ // Slave Transmitter
+ case TW_ST_SLA_ACK: // addressed, returned ack
+ case TW_ST_ARB_LOST_SLA_ACK: // arbitration lost, returned ack
+ // enter slave transmitter mode
+ twi_state = TWI_STX;
+ // ready the tx buffer index for iteration
+ twi_txBufferIndex = 0;
+ // set tx buffer length to be zero, to verify if user changes it
+ twi_txBufferLength = 0;
+ // request for txBuffer to be filled and length to be set
+ // note: user must call twi_transmit(bytes, length) to do this
+ twi_onSlaveTransmit();
+ // if they didn't change buffer & length, initialize it
+ if (0 == twi_txBufferLength) {
+ twi_txBufferLength = 1;
+ twi_txBuffer[0] = 0x00;
+ }
+ // transmit first byte from buffer, fall
+ case TW_ST_DATA_ACK: // byte sent, ack returned
+ // copy data to output register
+ TWDR = twi_txBuffer[twi_txBufferIndex++];
+ // if there is more to send, ack, otherwise nack
+ if (twi_txBufferIndex < twi_txBufferLength) {
+ twi_reply(1);
+ } else {
+ twi_reply(0);
+ }
+ break;
+ case TW_ST_DATA_NACK: // received nack, we are done
+ case TW_ST_LAST_DATA: // received ack, but we are done already!
+ // ack future responses
+ twi_reply(1);
+ // leave slave receiver state
+ twi_state = TWI_READY;
+ break;
+#endif
+
+ // All
+ case TW_NO_INFO: // no state information
+ break;
+ case TW_BUS_ERROR: // bus error, illegal stop/start
+ twi_error = TW_BUS_ERROR;
+ twi_stop();
+ break;
+ }
+}
diff --git a/src/kaleidoscope/device/keyboardio/twi.h b/src/kaleidoscope/device/keyboardio/twi.h
new file mode 100644
index 00000000..29cdf16b
--- /dev/null
+++ b/src/kaleidoscope/device/keyboardio/twi.h
@@ -0,0 +1,53 @@
+/*
+ twi.h - TWI/I2C library for Wiring & Arduino
+ Copyright (c) 2006 Nicholas Zambetti. All right reserved.
+
+ This library is free software: you can redistribute it and/or modify it under
+ the terms of the GNU Lesser General Public License as published by the Free
+ Software Foundation, either version 3 of the License, or (at your option) any
+ later version.
+
+ This library is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
+ details.
+
+ You should have received a copy of the GNU Lesser General Public License along
+ with this program. If not, see .
+*/
+
+#ifndef twi_h
+#define twi_h
+
+#include
+
+//#define ATMEGA8
+
+#ifndef TWI_FREQ
+#define TWI_FREQ 100000L
+#endif
+
+#ifndef TWI_BUFFER_LENGTH
+#define TWI_BUFFER_LENGTH 192
+#endif
+
+#define TWI_READY 0
+#define TWI_MRX 1
+#define TWI_MTX 2
+#define TWI_SRX 3
+#define TWI_STX 4
+
+void twi_init(void);
+void twi_disable(void);
+void twi_setAddress(uint8_t);
+void twi_setFrequency(uint32_t);
+uint8_t twi_readFrom(uint8_t, uint8_t*, uint8_t, uint8_t);
+uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t, uint8_t);
+uint8_t twi_transmit(const uint8_t*, uint8_t);
+void twi_attachSlaveRxEvent(void (*)(uint8_t*, int));
+void twi_attachSlaveTxEvent(void (*)(void));
+void twi_reply(uint8_t);
+void twi_stop(void);
+void twi_releaseBus(void);
+
+#endif