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@@ -1,5 +1,5 @@ |
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/* |
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Copyright 2011 Jun Wako <[email protected]> |
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Copyright 2011,2013 Jun Wako <[email protected]> |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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@@ -32,27 +32,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. |
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# define phex16(h) |
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#endif |
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// disable when errors occur 255 times. |
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#define ERROR_RETURN() do { \ |
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if (ps2_error) { \ |
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if (ps2_mouse_error_count < 255) { \ |
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ps2_mouse_error_count++; \ |
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} else { \ |
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ps2_mouse_error_count = 0; \ |
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ps2_mouse_enable = false; \ |
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} \ |
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return ps2_error; \ |
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} \ |
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} while (0) |
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/* |
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TODO |
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---- |
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- Stream mode |
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- Tracpoint command support: needed |
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- Middle button + move = Wheel traslation |
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*/ |
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bool ps2_mouse_enable = true; |
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uint8_t ps2_mouse_x = 0; |
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uint8_t ps2_mouse_y = 0; |
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@@ -69,85 +49,50 @@ uint8_t ps2_mouse_init(void) { |
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ps2_host_init(); |
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// Reset |
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rcv = ps2_host_send(0xFF); |
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print("ps2_mouse_init: send 0xFF: "); |
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phex(ps2_error); print("\n"); |
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ERROR_RETURN(); |
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// Not reliable: sometime fail to initialize mouse |
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// ACK |
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rcv = ps2_host_recv(); |
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print("ps2_mouse_init: read ACK: "); |
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// send Reset |
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_delay_ms(1000); // wait for powering up |
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rcv = ps2_host_send(0xFF); |
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print("ps2_mouse_init: send Reset: "); |
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phex(rcv); phex(ps2_error); print("\n"); |
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ERROR_RETURN(); |
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// BAT takes some time |
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_delay_ms(100); |
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// read completion code of BAT |
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//_delay_ms(1000); // wait for Basic Assurance Test |
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rcv = ps2_host_recv(); |
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print("ps2_mouse_init: read BAT: "); |
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phex(rcv); phex(ps2_error); print("\n"); |
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ERROR_RETURN(); |
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// Device ID |
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// read Device ID |
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rcv = ps2_host_recv(); |
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print("ps2_mouse_init: read DevID: "); |
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phex(rcv); phex(ps2_error); print("\n"); |
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ERROR_RETURN(); |
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// Enable data reporting |
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ps2_host_send(0xF4); |
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// send Enable Data Reporting |
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rcv = ps2_host_send(0xF4); |
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print("ps2_mouse_init: send 0xF4: "); |
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phex(ps2_error); print("\n"); |
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ERROR_RETURN(); |
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// ACK |
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rcv = ps2_host_recv(); |
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print("ps2_mouse_init: read ACK: "); |
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phex(rcv); phex(ps2_error); print("\n"); |
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ERROR_RETURN(); |
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// Set Remote mode |
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ps2_host_send(0xF0); |
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// send Set Remote mode |
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rcv = ps2_host_send(0xF0); |
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print("ps2_mouse_init: send 0xF0: "); |
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phex(ps2_error); print("\n"); |
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ERROR_RETURN(); |
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// ACK |
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rcv = ps2_host_recv(); |
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print("ps2_mouse_init: read ACK: "); |
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phex(rcv); phex(ps2_error); print("\n"); |
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ERROR_RETURN(); |
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return 0; |
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} |
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/* |
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Data format: |
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bit: 7 6 5 4 3 2 1 0 |
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----------------------------------------------------------------------- |
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0 btn: Yovflw Xovflw Ysign Xsign 1 Middle Right Left |
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1 x: X movement(0-255) |
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2 y: Y movement(0-255) |
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*/ |
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uint8_t ps2_mouse_read(void) |
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{ |
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uint8_t rcv; |
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if (!ps2_mouse_enable) return 1; |
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ps2_host_send(0xEB); |
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ERROR_RETURN(); |
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rcv=ps2_host_recv(); |
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ERROR_RETURN(); |
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rcv = ps2_host_send(0xEB); |
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if(rcv==0xFA) { |
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ps2_mouse_btn = ps2_host_recv(); |
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ERROR_RETURN(); |
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ps2_mouse_x = ps2_host_recv(); |
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ERROR_RETURN(); |
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ps2_mouse_y = ps2_host_recv(); |
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ERROR_RETURN(); |
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ps2_mouse_btn = ps2_host_recv_response(); |
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ps2_mouse_x = ps2_host_recv_response(); |
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ps2_mouse_y = ps2_host_recv_response(); |
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} |
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return 0; |
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} |
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@@ -216,3 +161,36 @@ void ps2_mouse_print(void) |
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phex(ps2_mouse_x); print(" "); |
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phex(ps2_mouse_y); print("\n"); |
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} |
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/* PS/2 Mouse Synopsis |
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* http://www.computer-engineering.org/ps2mouse/ |
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* |
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* Command: |
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* 0xFF: Reset |
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* 0xF6: Set Defaults Sampling; rate=100, resolution=4cnt/mm, scaling=1:1, reporting=disabled |
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* 0xF5: Disable Data Reporting |
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* 0xF4: Enable Data Reporting |
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* 0xF3: Set Sample Rate |
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* 0xF2: Get Device ID |
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* 0xF0: Set Remote Mode |
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* 0xEB: Read Data |
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* 0xEA: Set Stream Mode |
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* 0xE9: Status Request |
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* 0xE8: Set Resolution |
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* 0xE7: Set Scaling 2:1 |
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* 0xE6: Set Scaling 1:1 |
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* |
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* Mode: |
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* Stream Mode: devices sends the data when it changs its state |
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* Remote Mode: host polls the data periodically |
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* |
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* This code uses Remote Mode and polls the data with Read Data(0xEB). |
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* |
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* Data format: |
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* byte|7 6 5 4 3 2 1 0 |
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* ----+-------------------------------------------------------------- |
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* 0|Yovflw Xovflw Ysign Xsign 1 Middle Right Left |
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* 1| X movement(0-255) |
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* 2| Y movement(0-255) |
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*/ |
tmk
10 years ago