From 703f0277170c7e2d1acaa00b274f6fd479045abd Mon Sep 17 00:00:00 2001
From: tucvbif <47757803+tucvbif@users.noreply.github.com>
Date: Wed, 18 Aug 2021 02:40:00 +0300
Subject: Allow for removal of hysteresis on 4x encoders (#13698)

* Remove hysteresis on 4x encoders

Sometimes, controller skips encoder pulses and when it returns to default position, the encoder_pulses variable isn't equals 0. And when I turn encoder in opposite direciton, it skips first click becase of encoder_pulses crosses zero. To prevent this, I add the ENCODER_DEFAULT_POS constant, and reset encoder_pulses into 0 when the state variable equals ENCODER_DEFAULT_POS.

* Documentation for ENCODER_DEFAULT_POS
---
 quantum/encoder.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'quantum/encoder.c')

diff --git a/quantum/encoder.c b/quantum/encoder.c
index c30bf01cb2..8fb87281c2 100644
--- a/quantum/encoder.c
+++ b/quantum/encoder.c
@@ -119,6 +119,11 @@ static bool encoder_update(uint8_t index, uint8_t state) {
         encoder_update_kb(index, ENCODER_CLOCKWISE);
     }
     encoder_pulses[i] %= resolution;
+#ifdef ENCODER_DEFAULT_POS
+    if ((state & 0x3) == ENCODER_DEFAULT_POS) {
+        encoder_pulses[i] = 0;
+    }
+#endif
     return changed;
 }
 
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