50 lines
2.3 KiB
C++
50 lines
2.3 KiB
C++
#include "tap.h"
|
|
|
|
#ifdef FEATURE_TAP_DETECTION
|
|
#include "imu.h"
|
|
#include <bluefruit.h>
|
|
|
|
extern BLEHidAdafruit blehid;
|
|
|
|
// ─── Tap detection setup ──────────────────────────────────────────────────────
|
|
void setupTapDetection() {
|
|
imuWriteReg(REG_CTRL1_XL, 0x60); // ODR=416Hz, FS=±2g
|
|
imuWriteReg(REG_TAP_CFG, 0x8E); // INT_EN + LIR + TAP_Z/Y/X
|
|
imuWriteReg(REG_TAP_THS_6D, 0x0C); // threshold 750 mg (was 500 mg — too easy to false-trigger)
|
|
imuWriteReg(REG_INT_DUR2, 0x7A); // DUR=7(538ms), QUIET=2(19ms), SHOCK=2(38ms)
|
|
imuWriteReg(REG_WAKE_UP_THS, 0x80); // enable double-tap
|
|
imuWriteReg(REG_MD1_CFG, 0x48); // route taps to INT1
|
|
Serial.println("[TAP] Engine configured — single=LEFT, double=RIGHT");
|
|
}
|
|
|
|
// ─── Tap processing ───────────────────────────────────────────────────────────
|
|
void processTaps(unsigned long now) {
|
|
// Release held button after CLICK_HOLD_MS
|
|
if (clickButtonDown && (now - clickDownMs >= CLICK_HOLD_MS)) {
|
|
blehid.mouseButtonPress(clickButton, false);
|
|
clickButtonDown = false; clickButton = 0;
|
|
}
|
|
if (clickButtonDown) return; // Don't start a new click while one is held
|
|
|
|
// The LSM6DS3 (with D_TAP_EN) already disambiguates at hardware level:
|
|
// SINGLE_TAP is only set after the DUR window expires with no second tap.
|
|
// DOUBLE_TAP is set immediately when the second tap arrives within DUR.
|
|
// We trust this directly — no software delay needed.
|
|
uint8_t tapSrc = imuReadReg(REG_TAP_SRC);
|
|
if (!(tapSrc & 0x40)) return; // TAP_IA not set — no event
|
|
|
|
if (tapSrc & 0x10) { // DOUBLE_TAP → right click
|
|
Serial.println("[TAP] Double → RIGHT");
|
|
blehid.mouseButtonPress(MOUSE_BUTTON_RIGHT, true);
|
|
clickButton = MOUSE_BUTTON_RIGHT; clickButtonDown = true; clickDownMs = now;
|
|
statRightClicks++;
|
|
} else if (tapSrc & 0x20) { // SINGLE_TAP → left click
|
|
Serial.println("[TAP] Single → LEFT");
|
|
blehid.mouseButtonPress(MOUSE_BUTTON_LEFT, true);
|
|
clickButton = MOUSE_BUTTON_LEFT; clickButtonDown = true; clickDownMs = now;
|
|
statLeftClicks++;
|
|
}
|
|
}
|
|
|
|
#endif // FEATURE_TAP_DETECTION
|