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+/*
+Copyright 2013 Jun Wako <wakojun@gmail.com>
+
+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, see <http://www.gnu.org/licenses/>.
+*/
+#ifndef ACTION_CODE_H
+#define ACTION_CODE_H
+
+/* Action codes
+ * ============
+ * 16bit code: action_kind(4bit) + action_parameter(12bit)
+ *
+ *
+ * Key Actions(00xx)
+ * -----------------
+ * ACT_MODS(000r):
+ * 000r|0000|0000 0000 No action code
+ * 000r|0000|0000 0001 Transparent code
+ * 000r|0000| keycode Key
+ * 000r|mods|0000 0000 Modifiers
+ * 000r|mods| keycode Key and Modifiers
+ * r: Left/Right flag(Left:0, Right:1)
+ *
+ * ACT_MODS_TAP(001r):
+ * 0010|mods|0000 0000 Modifiers with OneShot
+ * 0010|mods|0000 00xx (reserved)
+ * 0010|mods| keycode Modifiers with Tap Key
+ *
+ *
+ * Other Keys(01xx)
+ * ----------------
+ * ACT_USAGE(0100):
+ * 0100|00| usage(10) System control(0x80) - General Desktop page(0x01)
+ * 0100|01| usage(10) Consumer control(0x01) - Consumer page(0x0C)
+ * 0100|10| usage(10) (reserved)
+ * 0100|11| usage(10) (reserved)
+ *
+ * ACT_MOUSEKEY(0110): TODO: Not needed?
+ * 0101|xxxx| keycode Mouse key
+ *
+ * 011x|xxxx xxxx xxxx (reseved)
+ *
+ *
+ * Layer Actions(10xx)
+ * -------------------
+ * ACT_LAYER(1000):
+ * 1000|oo00|pppE BBBB Default Layer Bitwise operation
+ * oo: operation(00:AND, 01:OR, 10:XOR, 11:SET)
+ * ppp: 4-bit chunk part(0-7)
+ * EBBBB: bits and extra bit
+ * 1000|ooee|pppE BBBB Layer Bitwise Operation
+ * oo: operation(00:AND, 01:OR, 10:XOR, 11:SET)
+ * ppp: 4-bit chunk part(0-7)
+ * eBBBB: bits and extra bit
+ * ee: on event(00:default layer, 01:press, 10:release, 11:both)
+ *
+ * 1001|xxxx|xxxx xxxx (reserved)
+ *
+ * ACT_LAYER_TAP(101x):
+ * 101E|LLLL| keycode Invert with tap key
+ * 101E|LLLL|1110 xxxx Reserved(0xE0-EF)
+ * 101E|LLLL|1111 0000 Invert with tap toggle(0xF0)
+ * 101E|LLLL|1111 0001 On/Off
+ * 101E|LLLL|1111 0010 Off/On
+ * 101E|LLLL|1111 0011 Set/Clear
+ * 101E|LLLL|1111 xxxx Reserved(0xF4-FF)
+ * ELLLL: layer(0-31)
+ *
+ *
+ * Extensions(11xx)
+ * ----------------
+ * ACT_MACRO(1100):
+ * 1100|opt | id(8) Macro play?
+ * 1100|1111| id(8) Macro record?
+ *
+ * ACT_COMMAND(1110):
+ * 1110|opt | id(8) Built-in Command exec
+ *
+ * ACT_FUNCTION(1111):
+ * 1111| address(12) Function?
+ * 1111|opt | id(8) Function?
+ */
+enum action_kind_id {
+ /* Key Actions */
+ ACT_MODS = 0b0000,
+ ACT_LMODS = 0b0000,
+ ACT_RMODS = 0b0001,
+ ACT_MODS_TAP = 0b0010,
+ ACT_LMODS_TAP = 0b0010,
+ ACT_RMODS_TAP = 0b0011,
+ /* Other Keys */
+ ACT_USAGE = 0b0100,
+ ACT_MOUSEKEY = 0b0101,
+ /* Layer Actions */
+ ACT_LAYER = 0b1000,
+ ACT_LAYER_TAP = 0b1010,
+ ACT_LAYER_TAP1 = 0b1011,
+ /* Extensions */
+ ACT_MACRO = 0b1100,
+ ACT_COMMAND = 0b1110,
+ ACT_FUNCTION = 0b1111
+};
+
+
+/* Action Code Struct
+ *
+ * NOTE:
+ * In avr-gcc bit field seems to be assigned from LSB(bit0) to MSB(bit15).
+ * AVR looks like a little endian in avr-gcc.
+ * Not portable across compiler/endianness?
+ *
+ * Byte order and bit order of 0x1234:
+ * Big endian: Little endian:
+ * -------------------- --------------------
+ * FEDC BA98 7654 3210 0123 4567 89AB CDEF
+ * 0001 0010 0011 0100 0010 1100 0100 1000
+ * 0x12 0x34 0x34 0x12
+ */
+typedef union {
+ uint16_t code;
+ struct action_kind {
+ uint16_t param :12;
+ uint8_t id :4;
+ } kind;
+ struct action_key {
+ uint8_t code :8;
+ uint8_t mods :4;
+ uint8_t kind :4;
+ } key;
+ struct action_layer_bitop {
+ uint8_t bits :4;
+ uint8_t xbit :1;
+ uint8_t part :3;
+ uint8_t on :2;
+ uint8_t op :2;
+ uint8_t kind :4;
+ } layer_bitop;
+ struct action_layer_tap {
+ uint8_t code :8;
+ uint8_t val :5;
+ uint8_t kind :3;
+ } layer_tap;
+ struct action_usage {
+ uint16_t code :10;
+ uint8_t page :2;
+ uint8_t kind :4;
+ } usage;
+ struct action_command {
+ uint8_t id :8;
+ uint8_t opt :4;
+ uint8_t kind :4;
+ } command;
+ struct action_function {
+ uint8_t id :8;
+ uint8_t opt :4;
+ uint8_t kind :4;
+ } func;
+} action_t;
+
+
+/* action utility */
+#define ACTION_NO 0
+#define ACTION_TRANSPARENT 1
+#define ACTION(kind, param) ((kind)<<12 | (param))
+
+
+/*
+ * Key Actions
+ */
+/* Mod bits: 43210
+ * bit 0 ||||+- Control
+ * bit 1 |||+-- Shift
+ * bit 2 ||+--- Alt
+ * bit 3 |+---- Gui
+ * bit 4 +----- LR flag(Left:0, Right:1)
+ */
+enum mods_bit {
+ MOD_LCTL = 0x01,
+ MOD_LSFT = 0x02,
+ MOD_LALT = 0x04,
+ MOD_LGUI = 0x08,
+ MOD_RCTL = 0x11,
+ MOD_RSFT = 0x12,
+ MOD_RALT = 0x14,
+ MOD_RGUI = 0x18,
+};
+enum mods_codes {
+ MODS_ONESHOT = 0x00,
+};
+#define ACTION_KEY(key) ACTION(ACT_MODS, (key))
+#define ACTION_MODS(mods) ACTION(ACT_MODS, (mods)<<8 | 0)
+#define ACTION_MODS_KEY(mods, key) ACTION(ACT_MODS, (mods)<<8 | (key))
+#define ACTION_MODS_TAP_KEY(mods, key) ACTION(ACT_MODS_TAP, (mods)<<8 | (key))
+#define ACTION_MODS_ONESHOT(mods) ACTION(ACT_MODS_TAP, (mods)<<8 | MODS_ONESHOT)
+
+
+/*
+ * Other Keys
+ */
+enum usage_pages {
+ PAGE_SYSTEM,
+ PAGE_CONSUMER
+};
+#define ACTION_USAGE_SYSTEM(id) ACTION(ACT_USAGE, PAGE_SYSTEM<<10 | (id))
+#define ACTION_USAGE_CONSUMER(id) ACTION(ACT_USAGE, PAGE_CONSUMER<<10 | (id))
+#define ACTION_MOUSEKEY(key) ACTION(ACT_MOUSEKEY, key)
+
+
+
+/*
+ * Layer Actions
+ */
+enum layer_param_on {
+ ON_PRESS = 1,
+ ON_RELEASE = 2,
+ ON_BOTH = 3,
+};
+enum layer_param_bit_op {
+ OP_BIT_AND = 0,
+ OP_BIT_OR = 1,
+ OP_BIT_XOR = 2,
+ OP_BIT_SET = 3,
+};
+enum layer_pram_tap_op {
+ OP_TAP_TOGGLE = 0xF0,
+ OP_ON_OFF,
+ OP_OFF_ON,
+ OP_SET_CLEAR,
+};
+#define ACTION_LAYER_BITOP(op, part, bits, on) (ACT_LAYER<<12 | (op)<<10 | (on)<<8 | (part)<<5 | ((bits)&0x1f))
+#define ACTION_LAYER_TAP(layer, key) (ACT_LAYER_TAP<<12 | (layer)<<8 | (key))
+/* Layer Operation */
+#define ACTION_LAYER_CLEAR(on) ACTION_LAYER_AND(0x1f, (on))
+#define ACTION_LAYER_MOMENTARY(layer) ACTION_LAYER_ON_OFF(layer)
+#define ACTION_LAYER_TOGGLE(layer) ACTION_LAYER_INVERT(layer, ON_RELEASE)
+#define ACTION_LAYER_INVERT(layer, on) ACTION_LAYER_BIT_XOR((layer)/4, 1<<((layer)%4), (on))
+#define ACTION_LAYER_ON(layer, on) ACTION_LAYER_BIT_OR( (layer)/4, 1<<((layer)%4), (on))
+#define ACTION_LAYER_OFF(layer, on) ACTION_LAYER_BIT_AND((layer)/4, ~(1<<((layer)%4)), (on))
+#define ACTION_LAYER_SET(layer, on) ACTION_LAYER_BIT_SET((layer)/4, 1<<((layer)%4), (on))
+#define ACTION_LAYER_ON_OFF(layer) ACTION_LAYER_TAP((layer), OP_ON_OFF)
+#define ACTION_LAYER_OFF_ON(layer) ACTION_LAYER_TAP((layer), OP_OFF_ON)
+#define ACTION_LAYER_SET_CLEAR(layer) ACTION_LAYER_TAP((layer), OP_SET_CLEAR)
+/* Bitwise Operation */
+#define ACTION_LAYER_BIT_AND(part, bits, on) ACTION_LAYER_BITOP(OP_BIT_AND, (part), (bits), (on))
+#define ACTION_LAYER_BIT_OR( part, bits, on) ACTION_LAYER_BITOP(OP_BIT_OR, (part), (bits), (on))
+#define ACTION_LAYER_BIT_XOR(part, bits, on) ACTION_LAYER_BITOP(OP_BIT_XOR, (part), (bits), (on))
+#define ACTION_LAYER_BIT_SET(part, bits, on) ACTION_LAYER_BITOP(OP_BIT_SET, (part), (bits), (on))
+/* Default Layer */
+#define ACTION_DEFAULT_LAYER_SET(layer) ACTION_DEFAULT_LAYER_BIT_SET((layer)/4, 1<<((layer)%4))
+/* Default Layer Bitwise Operation */
+#define ACTION_DEFAULT_LAYER_BIT_AND(part, bits) ACTION_LAYER_BITOP(OP_BIT_AND, (part), (bits), 0)
+#define ACTION_DEFAULT_LAYER_BIT_OR( part, bits) ACTION_LAYER_BITOP(OP_BIT_OR, (part), (bits), 0)
+#define ACTION_DEFAULT_LAYER_BIT_XOR(part, bits) ACTION_LAYER_BITOP(OP_BIT_XOR, (part), (bits), 0)
+#define ACTION_DEFAULT_LAYER_BIT_SET(part, bits) ACTION_LAYER_BITOP(OP_BIT_SET, (part), (bits), 0)
+/* With Tapping */
+#define ACTION_LAYER_TAP_KEY(layer, key) ACTION_LAYER_TAP((layer), (key))
+#define ACTION_LAYER_TAP_TOGGLE(layer) ACTION_LAYER_TAP((layer), OP_TAP_TOGGLE)
+
+
+/*
+ * Extensions
+ */
+/* Macro */
+#define ACTION_MACRO(id) ACTION(ACT_MACRO, (id))
+#define ACTION_MACRO_TAP(id) ACTION(ACT_MACRO, FUNC_TAP<<8 | (id))
+#define ACTION_MACRO_OPT(id, opt) ACTION(ACT_MACRO, (opt)<<8 | (id))
+/* Command */
+#define ACTION_COMMAND(id, opt) ACTION(ACT_COMMAND, (opt)<<8 | (addr))
+/* Function */
+enum function_opts {
+ FUNC_TAP = 0x8, /* indciates function is tappable */
+};
+#define ACTION_FUNCTION(id) ACTION(ACT_FUNCTION, (id))
+#define ACTION_FUNCTION_TAP(id) ACTION(ACT_FUNCTION, FUNC_TAP<<8 | (id))
+#define ACTION_FUNCTION_OPT(id, opt) ACTION(ACT_FUNCTION, (opt)<<8 | (id))
+
+#endif /* ACTION_CODE_H */