#include<util/delay.h>
#include "ps2.h"
#include "ps2_mouse.h"
-#include "usb_mouse.h"
+#include "report.h"
+#include "host.h"
#define PS2_MOUSE_DEBUG
#ifdef PS2_MOUSE_DEBUG
#endif
-bool ps2_mouse_enable = true;
-uint8_t ps2_mouse_x = 0;
-uint8_t ps2_mouse_y = 0;
-uint8_t ps2_mouse_btn = 0;
-uint8_t ps2_mouse_error_count = 0;
+static report_mouse_t mouse_report = {};
-static uint8_t ps2_mouse_btn_prev = 0;
+static void ps2_mouse_print_raw_data(void);
+static void ps2_mouse_print_usb_data(void);
+
+/* supports only 3 button mouse at this time */
uint8_t ps2_mouse_init(void) {
uint8_t rcv;
- if (!ps2_mouse_enable) return 1;
-
ps2_host_init();
_delay_ms(1000); // wait for powering up
return 0;
}
-uint8_t ps2_mouse_read(void)
+/* scroll support
+ * TODO: should be build option
+ */
+#define PS2_MOUSE_SCROLL_BUTTON 0x04
+#define X_IS_NEG (mouse_report.buttons & (1<<PS2_MOUSE_X_SIGN))
+#define Y_IS_NEG (mouse_report.buttons & (1<<PS2_MOUSE_Y_SIGN))
+#define X_IS_OVF (mouse_report.buttons & (1<<PS2_MOUSE_X_OVFLW))
+#define Y_IS_OVF (mouse_report.buttons & (1<<PS2_MOUSE_Y_OVFLW))
+void ps2_mouse_task(void)
{
+ enum { SCROLL_NONE, SCROLL_BTN, SCROLL_SENT };
+ static uint8_t scroll_state = SCROLL_NONE;
+ static uint8_t buttons_prev = 0;
+
+ /* receives packet from mouse */
uint8_t rcv;
+ rcv = ps2_host_send(PS2_MOUSE_READ_DATA);
+ if (rcv == PS2_ACK) {
+ mouse_report.buttons = ps2_host_recv_response();
+ mouse_report.x = ps2_host_recv_response();
+ mouse_report.y = ps2_host_recv_response();
+ } else {
+ if (!debug_mouse) print("ps2_mouse: fail to get mouse packet\n");
+ return;
+ }
- if (!ps2_mouse_enable) return 1;
+ /* if mouse moves or buttons state changes */
+ if (mouse_report.x || mouse_report.y ||
+ ((mouse_report.buttons ^ buttons_prev) & PS2_MOUSE_BTN_MASK)) {
- rcv = ps2_host_send(0xEB);
+ ps2_mouse_print_raw_data();
- if(rcv==0xFA) {
- ps2_mouse_btn = ps2_host_recv_response();
- ps2_mouse_x = ps2_host_recv_response();
- ps2_mouse_y = ps2_host_recv_response();
- }
- return 0;
-}
+ buttons_prev = mouse_report.buttons;
-bool ps2_mouse_changed(void)
-{
- return (ps2_mouse_x || ps2_mouse_y || (ps2_mouse_btn & PS2_MOUSE_BTN_MASK) != ps2_mouse_btn_prev);
-}
+ // PS/2 mouse data is '9-bit integer'(-256 to 255) which is comprised of sign-bit and 8-bit value.
+ // bit: 8 7 ... 0
+ // sign \8-bit/
+ //
+ // Meanwhile USB HID mouse indicates 8bit data(-127 to 127), note that -128 is not used.
+ //
+ // This converts PS/2 data into HID value. Use only -127-127 out of PS/2 9-bit.
+ mouse_report.x = X_IS_NEG ?
+ ((!X_IS_OVF && -127 <= mouse_report.x && mouse_report.x <= -1) ? mouse_report.x : -127) :
+ ((!X_IS_OVF && 0 <= mouse_report.x && mouse_report.x <= 127) ? mouse_report.x : 127);
+ mouse_report.y = Y_IS_NEG ?
+ ((!Y_IS_OVF && -127 <= mouse_report.y && mouse_report.y <= -1) ? mouse_report.y : -127) :
+ ((!Y_IS_OVF && 0 <= mouse_report.y && mouse_report.y <= 127) ? mouse_report.y : 127);
-#define PS2_MOUSE_SCROLL_BUTTON 0x04
-void ps2_mouse_usb_send(void)
-{
- static bool scrolled = false;
-
- if (!ps2_mouse_enable) return;
-
- if (ps2_mouse_changed()) {
- int8_t x, y, v, h;
- x = y = v = h = 0;
-
- // convert scale of X, Y: PS/2(-256/255) -> USB(-127/127)
- if (ps2_mouse_btn & (1<<PS2_MOUSE_X_SIGN))
- x = ps2_mouse_x > 128 ? (int8_t)ps2_mouse_x : -127;
- else
- x = ps2_mouse_x < 128 ? (int8_t)ps2_mouse_x : 127;
-
- if (ps2_mouse_btn & (1<<PS2_MOUSE_Y_SIGN))
- y = ps2_mouse_y > 128 ? (int8_t)ps2_mouse_y : -127;
- else
- y = ps2_mouse_y < 128 ? (int8_t)ps2_mouse_y : 127;
-
- // Y is needed to reverse
- y = -y;
-
- if (ps2_mouse_btn & PS2_MOUSE_SCROLL_BUTTON) {
- // scroll
- if (x > 0 || x < 0) h = (x > 64 ? 64 : (x < -64 ? -64 :x));
- if (y > 0 || y < 0) v = (y > 64 ? 64 : (y < -64 ? -64 :y));
- if (h || v) {
- scrolled = true;
- usb_mouse_send(0,0, -v/16, h/16, 0);
- _delay_ms(100);
+ // remove sign and overflow flags
+ mouse_report.buttons &= PS2_MOUSE_BTN_MASK;
+
+ // invert coordinate of y to conform to USB HID mouse
+ mouse_report.y = -mouse_report.y;
+
+
+ if ((mouse_report.buttons & PS2_MOUSE_SCROLL_BUTTON) == PS2_MOUSE_SCROLL_BUTTON) {
+ if (scroll_state == SCROLL_NONE) scroll_state = SCROLL_BTN;
+
+ // doesn't send Scroll Button
+ mouse_report.buttons &= ~PS2_MOUSE_SCROLL_BUTTON;
+
+ if (mouse_report.x || mouse_report.y) {
+ scroll_state = SCROLL_SENT;
+
+ mouse_report.v = -mouse_report.y/2;
+ mouse_report.h = mouse_report.x/2;
+ mouse_report.x = 0;
+ mouse_report.y = 0;
+ host_mouse_send(&mouse_report);
}
- } else if (!scrolled && (ps2_mouse_btn_prev & PS2_MOUSE_SCROLL_BUTTON)) {
- usb_mouse_send(0,0,0,0, PS2_MOUSE_SCROLL_BUTTON);
+ } else if (scroll_state == SCROLL_BTN &&
+ (mouse_report.buttons & PS2_MOUSE_SCROLL_BUTTON) == 0) {
+ scroll_state = SCROLL_NONE;
+
+ // send Scroll Button(down and up at once) when not scrolled
+ mouse_report.buttons |= PS2_MOUSE_SCROLL_BUTTON;
+ host_mouse_send(&mouse_report);
_delay_ms(100);
- usb_mouse_send(0,0,0,0, 0);
+ mouse_report.buttons &= ~PS2_MOUSE_SCROLL_BUTTON;
+ host_mouse_send(&mouse_report);
} else {
- scrolled = false;
- usb_mouse_send(x, y, 0, 0, ps2_mouse_btn & PS2_MOUSE_BTN_MASK);
- }
+ scroll_state = SCROLL_NONE;
- ps2_mouse_btn_prev = (ps2_mouse_btn & PS2_MOUSE_BTN_MASK);
- ps2_mouse_print();
+ host_mouse_send(&mouse_report);
+ }
+ ps2_mouse_print_usb_data();
}
- ps2_mouse_x = 0;
- ps2_mouse_y = 0;
- ps2_mouse_btn = 0;
+ // clear report
+ mouse_report.x = 0;
+ mouse_report.y = 0;
+ mouse_report.v = 0;
+ mouse_report.h = 0;
+ mouse_report.buttons = 0;
+}
+
+static void ps2_mouse_print_raw_data(void)
+{
+ if (!debug_mouse) return;
+ print("ps2_mouse raw [btn|x y]: [");
+ phex(mouse_report.buttons); print("|");
+ print_hex8((uint8_t)mouse_report.x); print(" ");
+ print_hex8((uint8_t)mouse_report.y); print("]\n");
}
-void ps2_mouse_print(void)
+static void ps2_mouse_print_usb_data(void)
{
if (!debug_mouse) return;
- print("ps2_mouse[btn|x y]: ");
- phex(ps2_mouse_btn); print("|");
- phex(ps2_mouse_x); print(" ");
- phex(ps2_mouse_y); print("\n");
+ print("ps2_mouse usb [btn|x y v h]: [");
+ phex(mouse_report.buttons); print("|");
+ print_hex8((uint8_t)mouse_report.x); print(" ");
+ print_hex8((uint8_t)mouse_report.y); print(" ");
+ print_hex8((uint8_t)mouse_report.v); print(" ");
+ print_hex8((uint8_t)mouse_report.h); print("]\n");
}
* byte|7 6 5 4 3 2 1 0
* ----+--------------------------------------------------------------
* 0|Yovflw Xovflw Ysign Xsign 1 Middle Right Left
- * 1| X movement(0-255)
- * 2| Y movement(0-255)
+ * 1| X movement
+ * 2| Y movement
*/
projects / max / tmk_keyboard.git / commitdiff