8 #define PS2_MOUSE_DEBUG
23 - Tracpoint command support: needed
24 - Middle button + move = Wheel traslation
26 uint8_t ps2_mouse_x = 0;
27 uint8_t ps2_mouse_y = 0;
28 uint8_t ps2_mouse_btn = 0;
29 uint8_t ps2_mouse_error_count = 0;
30 static uint8_t ps2_mouse_btn_prev = 0;
32 void ps2_mouse_init(void) {
36 rcv = ps2_host_send(0xFF);
37 print("ps2_mouse_init: send 0xFF: ");
38 phex(ps2_error); print("\n");
41 rcv = ps2_host_recv();
42 print("ps2_mouse_init: read ACK: ");
43 phex(rcv); phex(ps2_error); print("\n");
45 // BAT takes some time
47 rcv = ps2_host_recv();
48 print("ps2_mouse_init: read BAT: ");
49 phex(rcv); phex(ps2_error); print("\n");
52 rcv = ps2_host_recv();
53 print("ps2_mouse_init: read DevID: ");
54 phex(rcv); phex(ps2_error); print("\n");
56 // Enable data reporting
58 print("ps2_mouse_init: send 0xF4: ");
59 phex(ps2_error); print("\n");
62 rcv = ps2_host_recv();
63 print("ps2_mouse_init: read ACK: ");
64 phex(rcv); phex(ps2_error); print("\n");
68 print("ps2_mouse_init: send 0xF0: ");
69 phex(ps2_error); print("\n");
72 rcv = ps2_host_recv();
73 print("ps2_mouse_init: read ACK: ");
74 phex(rcv); phex(ps2_error); print("\n");
76 if (ps2_error) ps2_mouse_error_count++;
82 -----------------------------------------------------------------------
83 0 btn: Yovflw Xovflw Ysign Xsign 1 Middle Right Left
84 1 x: X movement(0-255)
85 2 y: Y movement(0-255)
87 void ps2_mouse_read(void)
94 ps2_mouse_btn = ps2_host_recv();
95 ps2_mouse_x = ps2_host_recv();
96 ps2_mouse_y = ps2_host_recv();
98 if (ps2_error) ps2_mouse_error_count++;
101 bool ps2_mouse_changed(void)
103 return (ps2_mouse_x || ps2_mouse_y || (ps2_mouse_btn & PS2_MOUSE_BTN_MASK) != ps2_mouse_btn_prev);
106 #define PS2_MOUSE_SCROLL_BUTTON 0x04
107 void ps2_mouse_usb_send(void)
109 static bool scrolled = false;
110 if (ps2_mouse_changed()) {
114 // convert scale of X, Y: PS/2(-256/255) -> USB(-127/127)
115 if (ps2_mouse_btn & (1<<PS2_MOUSE_X_SIGN))
116 x = ps2_mouse_x > 128 ? (int8_t)ps2_mouse_x : -127;
118 x = ps2_mouse_x < 128 ? (int8_t)ps2_mouse_x : 127;
120 if (ps2_mouse_btn & (1<<PS2_MOUSE_Y_SIGN))
121 y = ps2_mouse_y > 128 ? (int8_t)ps2_mouse_y : -127;
123 y = ps2_mouse_y < 128 ? (int8_t)ps2_mouse_y : 127;
125 // Y is needed to reverse
128 if (ps2_mouse_btn & PS2_MOUSE_SCROLL_BUTTON) {
130 if (x > 0 || x < 0) h = (x > 64 ? 64 : (x < -64 ? -64 :x));
131 if (y > 0 || y < 0) v = (y > 64 ? 64 : (y < -64 ? -64 :y));
134 usb_mouse_send(0,0, -v/16, h/16, 0);
137 } else if (!scrolled && (ps2_mouse_btn_prev & PS2_MOUSE_SCROLL_BUTTON)) {
138 usb_mouse_send(0,0,0,0, PS2_MOUSE_SCROLL_BUTTON);
140 usb_mouse_send(0,0,0,0, 0);
143 usb_mouse_send(x, y, 0, 0, ps2_mouse_btn & PS2_MOUSE_BTN_MASK);
146 ps2_mouse_btn_prev = (ps2_mouse_btn & PS2_MOUSE_BTN_MASK);
154 void ps2_mouse_print(void)
156 if (!debug_mouse) return;
157 print("ps2_mouse[btn|x y]: ");
158 phex(ps2_mouse_btn); print("|");
159 phex(ps2_mouse_x); print(" ");
160 phex(ps2_mouse_y); print("\n");