Add picocalc stm32 i2c keyboard code

Code/picocalc_keyboard/keyboard.h

@@ -0,0 +1,83 @@
+#ifndef KEYBOARD_H
+#define KEYBOARD_H
+
+enum key_state
+{
+    KEY_STATE_IDLE = 0,
+    KEY_STATE_PRESSED,
+    KEY_STATE_HOLD,
+    KEY_STATE_RELEASED,
+};
+
+#define KEY_JOY_UP      0x01
+#define KEY_JOY_DOWN    0x02
+#define KEY_JOY_LEFT    0x03
+#define KEY_JOY_RIGHT   0x04
+#define KEY_JOY_CENTER  0x05
+#define KEY_BTN_LEFT1   0x06
+#define KEY_BTN_RIGHT1  0x07
+
+#define KEY_BACKSPACE   0x08 
+#define KEY_TAB         0x09
+#define KEY_ENTER       0x0A 
+// 0x0D - CARRIAGE RETURN
+#define KEY_BTN_LEFT2   0x11
+#define KEY_BTN_RIGHT2  0x12
+
+
+#define KEY_MOD_ALT     0xA1
+#define KEY_MOD_SHL     0xA2
+#define KEY_MOD_SHR     0xA3
+#define KEY_MOD_SYM     0xA4
+#define KEY_MOD_CTRL    0xA5
+
+#define KEY_ESC       0xB1
+#define KEY_UP        0xb5
+#define KEY_DOWN      0xb6
+#define KEY_LEFT      0xb4
+#define KEY_RIGHT     0xb7
+
+#define KEY_BREAK     0xd0 // == KEY_PAUSE
+#define KEY_INSERT    0xD1
+#define KEY_HOME      0xD2
+#define KEY_DEL       0xD4
+#define KEY_END       0xD5
+#define KEY_PAGE_UP    0xd6
+#define KEY_PAGE_DOWN  0xd7
+
+#define KEY_CAPS_LOCK   0xC1
+
+#define KEY_F1 0x81
+#define KEY_F2 0x82
+#define KEY_F3 0x83
+#define KEY_F4 0x84
+#define KEY_F5 0x85
+#define KEY_F6 0x86
+#define KEY_F7 0x87
+#define KEY_F8 0x88
+#define KEY_F9 0x89
+#define KEY_F10 0x90
+
+typedef void (*key_callback)(char, enum key_state);
+typedef void (*lock_callback)(bool, bool);
+
+void keyboard_process(void);
+void keyboard_set_key_callback(key_callback callback);
+void keyboard_set_lock_callback(lock_callback callback);
+bool keyboard_get_capslock(void);
+bool keyboard_get_numlock(void);
+void keyboard_init(void);
+
+#define NUM_OF_COLS 8
+#define NUM_OF_ROWS 7
+
+#define NUM_OF_BTNS 12
+
+#define KEY_POLL_TIME 16
+
+#define KEY_LIST_SIZE 10
+
+
+#define KEY_HOLD_TIME 300
+
+#endif