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Minor carry timeout, formula letters, fixes and doc nitpicks #10

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Minor carry timeout, formula letters, fixes and doc nitpicks #10

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39c6a97
doc(maccel) explain Debug-enable sample code
ankostis Mar 10, 2024
51f1691
doc(maccel) explain why low DPIs need throttling >
ankostis Mar 10, 2024
6f56b7b
doc(maccel) denote letter-symbols & and desmos on sample params
ankostis Mar 2, 2024
b8662f3
feat(maccel) stabilize debug print float widths
ankostis Mar 2, 2024
ec76f8b
feat(maccel) debug-dump V as diffs to view carry at work and >
ankostis Mar 2, 2024
9f9693b
fix(maccel) don't dump param-keys if DEBUG is off
ankostis Mar 4, 2024
e8c6d29
feat(maccel) don's reset rounding carry if not stationary
ankostis Mar 3, 2024
1d285de
refact(maccel) demote timer from module-static -> function, >
ankostis Mar 11, 2024
0817331
refact(maccel) explain x1000 factor as curve-fitting, >
ankostis Mar 12, 2024
e164bc3
feat(maccel) debug-dump D as diffs to hook the eye on 0s
ankostis Mar 12, 2024
426ba61
style(maccel) minor comment move
ankostis Mar 12, 2024
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7 changes: 3 additions & 4 deletions maccel/maccel.c
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Original file line number Diff line number Diff line change
Expand Up @@ -6,8 +6,6 @@
#include "maccel.h"
#include "math.h"

static uint32_t maccel_timer;

#ifndef MACCEL_TAKEOFF
# define MACCEL_TAKEOFF 2.0 // (K) lower/higher value = curve starts more smoothly/abruptly
#endif
Expand Down Expand Up @@ -103,6 +101,7 @@ void maccel_toggle_enabled(void) {
#define CONSTRAIN_REPORT(val) (mouse_xy_report_t) _CONSTRAIN(val, XY_REPORT_MIN, XY_REPORT_MAX)

report_mouse_t pointing_device_task_maccel(report_mouse_t mouse_report) {
static uint32_t maccel_timer = 0;
// rounding carry to recycle dropped floats from int mouse reports, to smoothen low speed movements (credit @ankostis)
static float rounding_carry_x = 0;
static float rounding_carry_y = 0;
Expand All @@ -115,12 +114,12 @@ report_mouse_t pointing_device_task_maccel(report_mouse_t mouse_report) {
}
return mouse_report;
}
// reset timer:
// Reset timer on non-zero reports.
maccel_timer = timer_read32();
// Reset carry when pointer swaps direction, to follow user's hand.
if (mouse_report.x * rounding_carry_x < 0) rounding_carry_x = 0;
if (mouse_report.y * rounding_carry_y < 0) rounding_carry_y = 0;
// Limit expensive calls to get device cpi settings only when mouse stationary for > 200ms.
// Limit expensive calls to get device cpi settings only when mouse stationary for some time.
static uint16_t device_cpi = 300;
if (delta_time > MACCEL_CPI_THROTTLE_MS) {
device_cpi = pointing_device_get_cpi();
Expand Down