120 lines
3.3 KiB
C
120 lines
3.3 KiB
C
/*
|
|
Copyright 2014 Robin Haberkorn <robin.haberkorn@googlemail.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
|
|
the Free Software Foundation, either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
#include <avr/io.h>
|
|
#include <util/delay.h>
|
|
|
|
#include "serial.h"
|
|
#include "serial_mouse.h"
|
|
#include "report.h"
|
|
#include "host.h"
|
|
#include "timer.h"
|
|
#include "print.h"
|
|
#include "debug.h"
|
|
|
|
#ifdef MAX
|
|
# undef MAX
|
|
#endif
|
|
#define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
|
|
|
|
//#define SERIAL_MOUSE_CENTER_SCROLL
|
|
|
|
static void print_usb_data(const report_mouse_t *report);
|
|
|
|
void serial_mouse_task(void) {
|
|
/* 5 byte ring buffer */
|
|
static uint8_t buffer[5];
|
|
static int buffer_cur = 0;
|
|
|
|
int16_t rcv;
|
|
|
|
report_mouse_t report = {0, 0, 0, 0, 0};
|
|
|
|
rcv = serial_recv2();
|
|
if (rcv < 0) /* no new data */
|
|
return;
|
|
|
|
if (debug_mouse) xprintf("serial_mouse: byte: %04X\n", rcv);
|
|
|
|
/*
|
|
* Synchronization: mouse(4) says that all
|
|
* bytes but the first one in the packet have
|
|
* bit 7 == 0, but this is untrue.
|
|
* Therefore we discard all bytes up to the
|
|
* first one with the characteristic bit pattern.
|
|
*/
|
|
if (buffer_cur == 0 && (rcv >> 3) != 0x10) return;
|
|
|
|
buffer[buffer_cur++] = (uint8_t)rcv;
|
|
|
|
if (buffer_cur < 5) return;
|
|
buffer_cur = 0;
|
|
|
|
#ifdef SERIAL_MOUSE_CENTER_SCROLL
|
|
if ((buffer[0] & 0x7) == 0x5 && (buffer[1] || buffer[2])) {
|
|
/* USB HID uses only values from -127 to 127 */
|
|
report.h = MAX((int8_t)buffer[1], -127);
|
|
report.v = MAX((int8_t)buffer[2], -127);
|
|
|
|
print_usb_data(&report);
|
|
host_mouse_send(&report);
|
|
|
|
if (buffer[3] || buffer[4]) {
|
|
report.h = MAX((int8_t)buffer[3], -127);
|
|
report.v = MAX((int8_t)buffer[4], -127);
|
|
|
|
print_usb_data(&report);
|
|
host_mouse_send(&report);
|
|
}
|
|
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* parse 5 byte packet.
|
|
* NOTE: We only get a complete packet
|
|
* if the mouse moved or the button states
|
|
* change.
|
|
*/
|
|
if (!(buffer[0] & (1 << 2))) report.buttons |= MOUSE_BTN1;
|
|
if (!(buffer[0] & (1 << 1))) report.buttons |= MOUSE_BTN3;
|
|
if (!(buffer[0] & (1 << 0))) report.buttons |= MOUSE_BTN2;
|
|
|
|
/* USB HID uses only values from -127 to 127 */
|
|
report.x = MAX((int8_t)buffer[1], -127);
|
|
report.y = MAX(-(int8_t)buffer[2], -127);
|
|
|
|
print_usb_data(&report);
|
|
host_mouse_send(&report);
|
|
|
|
if (buffer[3] || buffer[4]) {
|
|
report.x = MAX((int8_t)buffer[3], -127);
|
|
report.y = MAX(-(int8_t)buffer[4], -127);
|
|
|
|
print_usb_data(&report);
|
|
host_mouse_send(&report);
|
|
}
|
|
}
|
|
|
|
static void print_usb_data(const report_mouse_t *report) {
|
|
if (!debug_mouse) return;
|
|
|
|
xprintf("serial_mouse usb: [%02X|%d %d %d %d]\n", report->buttons, report->x, report->y, report->v, report->h);
|
|
}
|