diff options
Diffstat (limited to 'protocol/ps2_mouse.c')
| -rw-r--r-- | protocol/ps2_mouse.c | 122 |
1 files changed, 50 insertions, 72 deletions
diff --git a/protocol/ps2_mouse.c b/protocol/ps2_mouse.c index f796b2b4de..701d97213c 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 @@ -32,27 +32,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. # 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) - -/* -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; @@ -69,85 +49,50 @@ uint8_t ps2_mouse_init(void) { ps2_host_init(); - // Reset - rcv = ps2_host_send(0xFF); - print("ps2_mouse_init: send 0xFF: "); - phex(ps2_error); print("\n"); - ERROR_RETURN(); + // Not reliable: sometime fail to initialize mouse - // ACK - rcv = ps2_host_recv(); - print("ps2_mouse_init: read ACK: "); + // send Reset + _delay_ms(1000); // wait for powering up + 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); + // read completion code of BAT + //_delay_ms(1000); // wait for Basic Assurance Test rcv = ps2_host_recv(); print("ps2_mouse_init: read BAT: "); phex(rcv); phex(ps2_error); print("\n"); - ERROR_RETURN(); - // Device ID + // read Device ID rcv = ps2_host_recv(); print("ps2_mouse_init: read DevID: "); phex(rcv); phex(ps2_error); print("\n"); - ERROR_RETURN(); - // Enable data reporting - ps2_host_send(0xF4); + // send Enable Data Reporting + rcv = 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) { uint8_t rcv; if (!ps2_mouse_enable) return 1; - ps2_host_send(0xEB); - ERROR_RETURN(); - - rcv=ps2_host_recv(); - ERROR_RETURN(); + rcv = ps2_host_send(0xEB); 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(); + ps2_mouse_btn = ps2_host_recv_response(); + ps2_mouse_x = ps2_host_recv_response(); + ps2_mouse_y = ps2_host_recv_response(); } return 0; } @@ -216,3 +161,36 @@ void ps2_mouse_print(void) phex(ps2_mouse_x); print(" "); phex(ps2_mouse_y); 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(0-255) + * 2| Y movement(0-255) + */ |