keyboard: Add preliminary keyboard controller

keyboard/.gitignore

@@ -0,0 +1 @@
+build-*

keyboard/avr/.gitignore

@@ -0,0 +1,4 @@
+*.hex
+*.o
+*.pro.user
+

keyboard/avr/Makefile

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+MCU=atmega8
+CFLAGS=-g -Wall -mcall-prologues -mmcu=$(MCU) -Os -DF_CPU=8000000
+LDFLAGS=-Wl,-gc-sections -Wl,-relax
+CC=avr-gcc
+TARGET=main
+OBJECT_FILES=main.o
+
+all: $(TARGET).hex
+
+clean:
+	rm -f *.o *.hex *.obj *.hex
+
+%.hex: %.obj
+	avr-objcopy -R .eeprom -O ihex $< $@
+
+%.obj: $(OBJECT_FILES)
+	$(CC) $(CFLAGS) $(OBJECT_FILES) $(LDFLAGS) -o $@
+
+program: $(TARGET).hex
+	avrdude -p $(MCU) -c usbasp -U flash:w:$(TARGET).hex
+	#avrdude -p $(MCU) -P /dev/ttyUSB1 -c arduino -b 57600  -U flash:w:$(TARGET).hex
+
+fuse:
+	avrdude -p m8 -c usbasp -U lfuse:w:0xe4:m -U hfuse:w:0xd9:m
+
+.phony: program fuse

keyboard/avr/keyboard-controller.pro

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+TEMPLATE = app
+CONFIG += console
+CONFIG -= app_bundle
+CONFIG -= qt
+
+INCLUDEPATH += /usr/avr/include
+
+SOURCES += \
+        main.c

keyboard/avr/main.c

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+#include <avr/io.h>
+#include <util/delay.h>
+
+#define MATRIX_X(t) t##B
+#define MATRIX_Y1(t) t##C
+#define MATRIX_Y2(t) t##D
+#define MATRIX_Y_SPLIT 6
+#define MATRIX_Y2_DELTA (-1)
+#define MASK_Y1 0b00111111
+#define MASK_Y2 0b11100000
+
+#define DELAY_ROW_SWITCH() _delay_ms(1) //_delay_us(1)
+
+#define BAUDRATE 9600
+#define UBRR 51 // (F_CPU / BAUDRATE) / 32
+
+/* Keycode from include/linux/input.h */
+#define KEY_RESERVED		0
+#define KEY_ESC			1
+#define KEY_1			2
+#define KEY_2			3
+#define KEY_3			4
+#define KEY_4			5
+#define KEY_5			6
+#define KEY_6			7
+#define KEY_7			8
+#define KEY_8			9
+#define KEY_9			10
+#define KEY_0			11
+#define KEY_MINUS		12
+#define KEY_EQUAL		13
+#define KEY_BACKSPACE		14
+#define KEY_TAB			15
+#define KEY_Q			16
+#define KEY_W			17
+#define KEY_E			18
+#define KEY_R			19
+#define KEY_T			20
+#define KEY_Y			21
+#define KEY_U			22
+#define KEY_I			23
+#define KEY_O			24
+#define KEY_P			25
+#define KEY_LEFTBRACE		26
+#define KEY_RIGHTBRACE		27
+#define KEY_ENTER		28
+#define KEY_LEFTCTRL		29
+#define KEY_A			30
+#define KEY_S			31
+#define KEY_D			32
+#define KEY_F			33
+#define KEY_G			34
+#define KEY_H			35
+#define KEY_J			36
+#define KEY_K			37
+#define KEY_L			38
+#define KEY_SEMICOLON		39
+#define KEY_APOSTROPHE		40
+#define KEY_GRAVE		41
+#define KEY_LEFTSHIFT		42
+#define KEY_BACKSLASH		43
+#define KEY_Z			44
+#define KEY_X			45
+#define KEY_C			46
+#define KEY_V			47
+#define KEY_B			48
+#define KEY_N			49
+#define KEY_M			50
+#define KEY_COMMA		51
+#define KEY_DOT			52
+#define KEY_SLASH		53
+#define KEY_RIGHTSHIFT		54
+#define KEY_KPASTERISK		55
+#define KEY_LEFTALT		56
+#define KEY_SPACE		57
+#define KEY_CAPSLOCK		58
+#define KEY_F1			59
+#define KEY_F2			60
+#define KEY_F3			61
+#define KEY_F4			62
+#define KEY_F5			63
+#define KEY_F6			64
+#define KEY_F7			65
+#define KEY_F8			66
+#define KEY_F9			67
+#define KEY_F10			68
+#define KEY_NUMLOCK		69
+#define KEY_SCROLLLOCK		70
+#define KEY_KP7			71
+#define KEY_KP8			72
+#define KEY_KP9			73
+#define KEY_KPMINUS		74
+#define KEY_KP4			75
+#define KEY_KP5			76
+#define KEY_KP6			77
+#define KEY_KPPLUS		78
+#define KEY_KP1			79
+#define KEY_KP2			80
+#define KEY_KP3			81
+#define KEY_KP0			82
+#define KEY_KPDOT		83
+
+#define KEY_ZENKAKUHANKAKU	85
+#define KEY_102ND		86
+#define KEY_F11			87
+#define KEY_F12			88
+#define KEY_RO			89
+#define KEY_KATAKANA		90
+#define KEY_HIRAGANA		91
+#define KEY_HENKAN		92
+#define KEY_KATAKANAHIRAGANA	93
+#define KEY_MUHENKAN		94
+#define KEY_KPJPCOMMA		95
+#define KEY_KPENTER		96
+#define KEY_RIGHTCTRL		97
+#define KEY_KPSLASH		98
+#define KEY_SYSRQ		99
+#define KEY_RIGHTALT		100
+#define KEY_LINEFEED		101
+#define KEY_HOME		102
+#define KEY_UP			103
+#define KEY_PAGEUP		104
+#define KEY_LEFT		105
+#define KEY_RIGHT		106
+#define KEY_END			107
+#define KEY_DOWN		108
+#define KEY_PAGEDOWN		109
+#define KEY_INSERT		110
+#define KEY_DELETE		111
+#define KEY_MACRO		112
+#define KEY_MUTE		113
+#define KEY_VOLUMEDOWN		114
+#define KEY_VOLUMEUP		115
+#define KEY_POWER		116	/* SC System Power Down */
+#define KEY_KPEQUAL		117
+#define KEY_KPPLUSMINUS		118
+#define KEY_PAUSE		119
+#define KEY_SCALE		120	/* AL Compiz Scale (Expose) */
+
+#define KEY_KPCOMMA		121
+#define KEY_HANGEUL		122
+#define KEY_HANGUEL		KEY_HANGEUL
+#define KEY_HANJA		123
+#define KEY_YEN			124
+#define KEY_LEFTMETA		125
+#define KEY_RIGHTMETA		126
+#define KEY_COMPOSE		127
+
+#define SKEY_FN 255
+#define KEYCODE_FN 127
+
+static uint8_t keycode_translation_matrix[2][9][8] = {
+	{ /* Standard keymap */
+	  {KEY_4, KEY_3,  3,  4,  5,  6,  7,  8},
+	  {KEY_5, KEY_6, 13, 14, 15, 16, 17, 18},
+	  {KEY_8, KEY_7, 23, 24, 25, 26, 27, 28},
+	  {KEY_1, KEY_2, 33, 34, 35, 36, 37, 38},
+	  {KEY_9, 42, 43, 44, 45, 46, 47, 48},
+	  {51, KEY_0, 53, 54, 55, 56, 57, 58},
+	  {61, 62, 63, 64, 65, 66, 67, 68},
+	  {71, 72, 73, 74, 75, SKEY_FN, 77, 78},
+	  {81, 82, 83, 84, 85, 86, 87, 88}
+	},
+	{ /* FN keymap */
+	  { 1,  2,  3,  4,  5,  6,  7,  8},
+	  {11, 12, 13, 14, 15, 16, 17, 18},
+	  {21, 22, 23, 24, 25, 26, 27, 28},
+	  {31, 32, 33, 34, 35, 36, 37, 38},
+	  {41, 42, 43, 44, 45, 46, 47, 48},
+	  {51, 52, 53, 54, 55, 56, 57, 58},
+	  {61, 62, 63, 64, 65, 66, 67, 68},
+	  {71, 72, 73, 74, 75, SKEY_FN, 77, 78},
+	  {81, 82, 83, 84, 85, 86, 87, 88}
+	}
+};
+
+uint8_t matrix_state_last_vector[9] = {0xFF, 0xFF, 0xFF, 0xFF,
+				       0xFF, 0xFF, 0xFF, 0xFF,
+				       0xFF};
+
+
+uint8_t fn_active = 0;
+
+void process_key_event(uint8_t col, uint8_t row, uint8_t state)
+{
+	char c;
+	uint8_t keycode;
+
+	keycode = keycode_translation_matrix[fn_active][col][row];
+
+	if (keycode == SKEY_FN) {
+		fn_active = state;
+#ifdef KEYCODE_FN
+		while (!(UCSRA & (1 << UDRE)));
+		UDR = KEYCODE_FN | (state << 7);
+#endif
+	} else {
+		c = keycode | (state << 7);
+		while (!(UCSRA & (1 << UDRE)));
+		UDR = c;
+	}
+}
+
+void matrix_scan_col(uint8_t col)
+{
+	uint8_t matrix_state;
+	uint8_t row;
+	uint8_t bit;
+
+	if (col < MATRIX_Y_SPLIT) {
+		MATRIX_Y2(DDR) &= ~(MASK_Y2);
+		MATRIX_Y1(DDR) = (MATRIX_Y1(DDR) & ~(MASK_Y1)) |
+				(1 << col);
+	} else {
+		MATRIX_Y2(DDR) = (MATRIX_Y2(DDR) & ~(MASK_Y2)) |
+				(1 << (col + MATRIX_Y2_DELTA));
+		MATRIX_Y1(DDR) &= ~(MASK_Y1);
+	}
+
+	DELAY_ROW_SWITCH();
+
+	matrix_state = MATRIX_X(PIN);
+
+	for (row = 0; row < 8; ++row) {
+		bit = (1 << row);
+		if ((matrix_state ^ matrix_state_last_vector[col]) & bit) {
+			process_key_event(col, row, !(matrix_state & bit));
+		}
+	}
+
+	matrix_state_last_vector[col] = matrix_state;
+}
+
+int main()
+{
+	int col;
+
+	/* Config I/O */
+	MATRIX_X(DDR) = 0; /* Columns as input */
+	MATRIX_X(PORT) = 0xFF; /* Enable pull-ups for columns */
+	MATRIX_Y1(DDR) &= ~MASK_Y1; /* Disable rows */
+	MATRIX_Y2(DDR) &= ~MASK_Y2; /* Disable rows */
+	MATRIX_Y1(PORT) &= ~MASK_Y1; /* Pull row low when selected */
+	MATRIX_Y2(PORT) &= ~MASK_Y2; /* Pull row low when selected */
+	UCSRB = (1 << TXEN);
+	UBRRH = (UBRR >> 8) & 0xFF;
+	UBRRL = UBRR & 0xFF;
+
+	fn_active = 0;
+
+	/* Continuously scan matrix */
+	while (1) {
+		for (col = 0; col < 9; ++col) {
+			matrix_scan_col(col);
+		}
+	}
+}

keyboard/keyboard-test-uart/.gitignore

@@ -0,0 +1,3 @@
+*.o
+*.user
+main

keyboard/keyboard-test-uart/CMakeLists.txt

@@ -0,0 +1,4 @@
+cmake_minimum_required(VERSION 2.8)
+
+project(keyboard-test-uart)
+add_executable(${PROJECT_NAME} "main.c")

keyboard/keyboard-test-uart/main.c

@@ -0,0 +1,158 @@
+#include <stdio.h>
+
+#define DN 0
+#define UP 1
+
+static char *keycode_table[] = {
+	"NULL",
+	"ESC",
+	"1",
+	"2",
+	"3",
+	"4",
+	"5",
+	"6",
+	"7",
+	"8",
+	"9",
+	"0",
+	"-",
+	"=",
+	"BS",
+	"TAB",
+	"Q",
+	"W",
+	"E",
+	"R",
+	"T",
+	"Y",
+	"U",
+	"I",
+	"O",
+	"P",
+	"[",
+	"]",
+	"ENTER",
+	"L CTRL",
+	"A",
+	"S",
+	"D",
+	"F",
+	"G",
+	"H",
+	"J",
+	"K",
+	"L",
+	";",
+	"'",
+	"`",
+	"L SHIFT",
+	"\\",
+	"Z",
+	"X",
+	"C",
+	"V",
+	"B",
+	"N",
+	"M",
+	",",
+	".",
+	"/",
+	"R SHIFT",
+	"*",
+	"L ALT",
+	"SPACE",
+	"CAPS LOCK",
+	"F1",
+	"F2",
+	"F3",
+	"F4",
+	"F5",
+	"F6",
+	"F7",
+	"F8",
+	"F9",
+	"F10",
+	"NUM LOCK",
+	"SCROLL LOCK",
+	"HOME 7",
+	"UP 8",
+	"PGUP 9",
+	"-",
+	"LEFT 4",
+	"KP 5",
+	"RT ARROW 6",
+	"+",
+	"END 1",
+	"DOWN 2",
+	"PGDN 3",
+	"INS",
+	"DEL",
+	"84",
+	"85",
+	"86",
+	"F11",
+	"F12",
+	"89",
+	"90",
+	"91",
+	"92",
+	"93",
+	"94",
+	"95",
+	"R ENTER",
+	"R CTRL",
+	"/",
+	"PRT SCR",
+	"R ALT",
+	"101",
+	"Home",
+	"Up",
+	"PgUp",
+	"Left",
+	"Right",
+	"End",
+	"Down",
+	"PgDn",
+	"Insert",
+	"Del",
+	"112",
+	"113",
+	"114",
+	"115",
+	"116",
+	"117",
+	"118",
+	"Pause"
+};
+
+int main()
+{
+	FILE *f;
+	char c;
+	int ev = 0;
+
+	f = fopen("/dev/ttyUSB1", "rwb");
+
+	if (f) {
+		while (1) {
+			c = getc(f);
+
+			if (c < 0) {
+				c += 128;
+				ev = DN;
+			} else {
+				ev = UP;
+			}
+
+			printf("Key %3d (%s) %s\n",
+			       c, keycode_table[c], (ev == UP ? "UP" : "DOWN"));
+		}
+
+		fclose(f);
+	} else {
+		fprintf(stderr, "Error: Could not open serial device.");
+	}
+
+	return 0;
+}