~ruther/qmk_firmware: Allow for removal of hysteresis on 4x encoders (#13698)

703f0277170c7e2d1acaa00b274f6fd479045abd — tucvbif 4 years ago b8e913c

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

patch browse .tar.gz

2 files changed, 11 insertions(+), 0 deletions(-)

M docs/feature_encoders.md
M quantum/encoder.c

M docs/feature_encoders.md => docs/feature_encoders.md +6 -0

@@ 38,6 38,12 @@ It can also be defined per-encoder, by instead defining:
 #define ENCODER_RESOLUTIONS { 4, 2 }
 ```
 
+For 4× encoders you also can assign default position if encoder skips pulses when it changes direction. For example, if your encoder send high level on both pins by default, define this:
+
+```c
+#define ENCODER_DEFAULT_POS 0x3
+```
+
 ## Split Keyboards
 
 If you are using different pinouts for the encoders on each half of a split keyboard, you can define the pinout (and optionally, resolutions) for the right half like this:

M quantum/encoder.c => quantum/encoder.c +5 -0

@@ 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;
 }