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serial_mouse: simplified clipping of X/Y/V/H changes below -127 using a MAX macro

This commit is contained in:
Robin Haberkorn 2014-07-27 17:26:44 +02:00
parent 0bfba7acc4
commit eb90284494
2 changed files with 20 additions and 18 deletions

View file

@ -27,6 +27,11 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "print.h"
#include "debug.h"
#ifdef MAX
#undef MAX
#endif
#define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
static void print_usb_data(const report_mouse_t *report);
void serial_mouse_task(void)
@ -91,8 +96,8 @@ void serial_mouse_task(void)
report.y = ((buffer[0] << 4) & 0xC0) | buffer[2];
/* USB HID uses values from -127 to 127 only */
report.x = report.x < -127 ? -127 : report.x;
report.y = report.y < -127 ? -127 : report.y;
report.x = MAX(report.x, -127);
report.y = MAX(report.y, -127);
#if 0
if (!report.buttons && !report.x && !report.y) {

View file

@ -27,6 +27,11 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#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);
@ -67,20 +72,16 @@ void serial_mouse_task(void)
#ifdef SERIAL_MOUSE_CENTER_SCROLL
if ((buffer[0] & 0x7) == 0x5 && (buffer[1] || buffer[2])) {
report.h = (int8_t)buffer[1];
/* USB HID uses only values from -127 to 127 */
report.h = report.h < -127 ? -127 : report.h;
report.v = (int8_t)buffer[2];
report.v = report.v < -127 ? -127 : report.v;
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 = (int8_t)buffer[3];
report.h = report.h < -127 ? -127 : report.h;
report.v = (int8_t)buffer[4];
report.v = report.v < -127 ? -127 : report.v;
report.h = MAX((int8_t)buffer[3], -127);
report.v = MAX((int8_t)buffer[4], -127);
print_usb_data(&report);
host_mouse_send(&report);
@ -103,20 +104,16 @@ void serial_mouse_task(void)
if (!(buffer[0] & (1 << 0)))
report.buttons |= MOUSE_BTN2;
report.x = (int8_t)buffer[1];
/* USB HID uses only values from -127 to 127 */
report.x = report.x < -127 ? -127 : report.x;
report.y = -(int8_t)buffer[2];
report.y = report.y < -127 ? -127 : report.y;
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 = (int8_t)buffer[3];
report.x = report.x < -127 ? -127 : report.x;
report.y = -(int8_t)buffer[4];
report.y = report.y < -127 ? -127 : report.y;
report.x = MAX((int8_t)buffer[3], -127);
report.y = MAX(-(int8_t)buffer[4], -127);
print_usb_data(&report);
host_mouse_send(&report);