diff options
Diffstat (limited to 'protocol/ps2_mouse.c')
| -rw-r--r-- | protocol/ps2_mouse.c | 303 |
1 files changed, 150 insertions, 153 deletions
diff --git a/protocol/ps2_mouse.c b/protocol/ps2_mouse.c index f796b2b4d..4702f12c4 100644 --- a/protocol/ps2_mouse.c +++ b/protocol/ps2_mouse.c @@ -1,5 +1,5 @@ /* -Copyright 2011 Jun Wako <wakojun@gmail.com> +Copyright 2011,2013 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 @@ -20,199 +20,196 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. #include<util/delay.h> #include "ps2.h" #include "ps2_mouse.h" -#include "usb_mouse.h" +#include "report.h" +#include "host.h" +#include "timer.h" +#include "print.h" +#include "debug.h" -#define PS2_MOUSE_DEBUG -#ifdef PS2_MOUSE_DEBUG -# include "print.h" -# include "debug.h" -#else -# define print(s) -# define phex(h) -# define phex16(h) -#endif -// disable when errors occur 255 times. -#define ERROR_RETURN() do { \ - if (ps2_error) { \ - if (ps2_mouse_error_count < 255) { \ - ps2_mouse_error_count++; \ - } else { \ - ps2_mouse_error_count = 0; \ - ps2_mouse_enable = false; \ - } \ - return ps2_error; \ - } \ -} while (0) +static report_mouse_t mouse_report = {}; -/* -TODO ----- -- Stream mode -- Tracpoint command support: needed -- Middle button + move = Wheel traslation -*/ -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 uint8_t ps2_mouse_btn_prev = 0; +static void 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(); - // Reset - rcv = ps2_host_send(0xFF); - print("ps2_mouse_init: send 0xFF: "); - phex(ps2_error); print("\n"); - ERROR_RETURN(); + _delay_ms(1000); // wait for powering up - // ACK - rcv = ps2_host_recv(); - print("ps2_mouse_init: read ACK: "); + // send Reset + rcv = ps2_host_send(0xFF); + print("ps2_mouse_init: send Reset: "); phex(rcv); phex(ps2_error); print("\n"); - ERROR_RETURN(); - // BAT takes some time - _delay_ms(100); - rcv = ps2_host_recv(); + // read completion code of BAT + rcv = ps2_host_recv_response(); print("ps2_mouse_init: read BAT: "); phex(rcv); phex(ps2_error); print("\n"); - ERROR_RETURN(); - // Device ID - rcv = ps2_host_recv(); + // read Device ID + rcv = ps2_host_recv_response(); print("ps2_mouse_init: read DevID: "); phex(rcv); phex(ps2_error); print("\n"); - ERROR_RETURN(); - // Enable data reporting - ps2_host_send(0xF4); - print("ps2_mouse_init: send 0xF4: "); - phex(ps2_error); print("\n"); - ERROR_RETURN(); - - // ACK - rcv = ps2_host_recv(); - print("ps2_mouse_init: read ACK: "); - phex(rcv); phex(ps2_error); print("\n"); - ERROR_RETURN(); - - // Set Remote mode - ps2_host_send(0xF0); + // send Set Remote mode + rcv = ps2_host_send(0xF0); print("ps2_mouse_init: send 0xF0: "); - phex(ps2_error); print("\n"); - ERROR_RETURN(); - - // ACK - rcv = ps2_host_recv(); - print("ps2_mouse_init: read ACK: "); phex(rcv); phex(ps2_error); print("\n"); - ERROR_RETURN(); return 0; } -/* -Data format: - bit: 7 6 5 4 3 2 1 0 ------------------------------------------------------------------------ -0 btn: Yovflw Xovflw Ysign Xsign 1 Middle Right Left -1 x: X movement(0-255) -2 y: Y movement(0-255) -*/ -uint8_t ps2_mouse_read(void) +#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)) { - ps2_host_send(0xEB); - ERROR_RETURN(); +#ifdef PS2_MOUSE_DEBUG + print("ps2_mouse raw: ["); + phex(mouse_report.buttons); print("|"); + print_hex8((uint8_t)mouse_report.x); print(" "); + print_hex8((uint8_t)mouse_report.y); print("]\n"); +#endif - rcv=ps2_host_recv(); - ERROR_RETURN(); + buttons_prev = mouse_report.buttons; + + // 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); + + // 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 PS2_MOUSE_SCROLL_BTN_MASK + static uint16_t scroll_button_time = 0; + if ((mouse_report.buttons & (PS2_MOUSE_SCROLL_BTN_MASK)) == (PS2_MOUSE_SCROLL_BTN_MASK)) { + if (scroll_state == SCROLL_NONE) { + scroll_button_time = timer_read(); + scroll_state = SCROLL_BTN; + } - if(rcv==0xFA) { - ps2_mouse_btn = ps2_host_recv(); - ERROR_RETURN(); - ps2_mouse_x = ps2_host_recv(); - ERROR_RETURN(); - ps2_mouse_y = ps2_host_recv(); - ERROR_RETURN(); - } - return 0; -} + // doesn't send Scroll Button + //mouse_report.buttons &= ~(PS2_MOUSE_SCROLL_BTN_MASK); -bool ps2_mouse_changed(void) -{ - return (ps2_mouse_x || ps2_mouse_y || (ps2_mouse_btn & PS2_MOUSE_BTN_MASK) != ps2_mouse_btn_prev); -} + if (mouse_report.x || mouse_report.y) { + scroll_state = SCROLL_SENT; -#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); + mouse_report.v = -mouse_report.y/(PS2_MOUSE_SCROLL_DIVISOR_V); + mouse_report.h = mouse_report.x/(PS2_MOUSE_SCROLL_DIVISOR_H); + mouse_report.x = 0; + mouse_report.y = 0; + //host_mouse_send(&mouse_report); + } + } + else if ((mouse_report.buttons & (PS2_MOUSE_SCROLL_BTN_MASK)) == 0) { +#if PS2_MOUSE_SCROLL_BTN_SEND + if (scroll_state == SCROLL_BTN && + TIMER_DIFF_16(timer_read(), scroll_button_time) < PS2_MOUSE_SCROLL_BTN_SEND) { + // send Scroll Button(down and up at once) when not scrolled + mouse_report.buttons |= (PS2_MOUSE_SCROLL_BTN_MASK); + host_mouse_send(&mouse_report); _delay_ms(100); + mouse_report.buttons &= ~(PS2_MOUSE_SCROLL_BTN_MASK); } - } else if (!scrolled && (ps2_mouse_btn_prev & PS2_MOUSE_SCROLL_BUTTON)) { - usb_mouse_send(0,0,0,0, PS2_MOUSE_SCROLL_BUTTON); - _delay_ms(100); - usb_mouse_send(0,0,0,0, 0); - } else { - scrolled = false; - usb_mouse_send(x, y, 0, 0, ps2_mouse_btn & PS2_MOUSE_BTN_MASK); +#endif + scroll_state = SCROLL_NONE; } + // doesn't send Scroll Button + mouse_report.buttons &= ~(PS2_MOUSE_SCROLL_BTN_MASK); +#endif + - ps2_mouse_btn_prev = (ps2_mouse_btn & PS2_MOUSE_BTN_MASK); - ps2_mouse_print(); + host_mouse_send(&mouse_report); + 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; } -void ps2_mouse_print(void) +static void 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: ["); + 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"); } + + +/* PS/2 Mouse Synopsis + * http://www.computer-engineering.org/ps2mouse/ + * + * Command: + * 0xFF: Reset + * 0xF6: Set Defaults Sampling; rate=100, resolution=4cnt/mm, scaling=1:1, reporting=disabled + * 0xF5: Disable Data Reporting + * 0xF4: Enable Data Reporting + * 0xF3: Set Sample Rate + * 0xF2: Get Device ID + * 0xF0: Set Remote Mode + * 0xEB: Read Data + * 0xEA: Set Stream Mode + * 0xE9: Status Request + * 0xE8: Set Resolution + * 0xE7: Set Scaling 2:1 + * 0xE6: Set Scaling 1:1 + * + * Mode: + * Stream Mode: devices sends the data when it changs its state + * Remote Mode: host polls the data periodically + * + * This code uses Remote Mode and polls the data with Read Data(0xEB). + * + * Data format: + * byte|7 6 5 4 3 2 1 0 + * ----+-------------------------------------------------------------- + * 0|Yovflw Xovflw Ysign Xsign 1 Middle Right Left + * 1| X movement + * 2| Y movement + */ |