Remove non-Keychron keyboards

1 files changed, 0 insertions, 147 deletions

diff --git a/keyboards/ploopyco/opt_encoder_simple.c b/keyboards/ploopyco/opt_encoder_simple.c
deleted file mode 100644
index c30deb9ca4..0000000000
--- a/keyboards/ploopyco/opt_encoder_simple.c
+++ /dev/null
@@ -1,147 +0,0 @@
-/* Copyright 2020 Christopher Courtney, aka Drashna Jael're  (@drashna) <drashna@live.com>
- * Copyright 2020 Ploopy Corporation
- * Copyright 2022 Leorize <leorize+oss@disroot.org>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-#include "opt_encoder.h"
-#include "util.h"
-#include <stdbool.h>
-#include <stdint.h>
-
-/* An alternative implementation for interpreting the encoder status:
- *
- * From graphing the phototransistor voltages, the peak and baseline appears to
- * be rather stable. Therefore there is no need to average them out, and instead
- * just simply store the min and max voltages of each phototransistor.
- *
- * This algorithm then distinguish between high and low states by employing an
- * approach similar to a Schmitt trigger: a low and high threshold is defined
- * for each phototransistor based on their min and max voltages.
- *
- * Currently, the thresholds are:
- *
- * * High threshold: The upper quarter of the voltage range.
- * * Low threshold: The lower quarter of the voltage range.
- *
- * these thresholds are defined for each phototransistor.
- *
- * For a state to cross from high -> low, it must fall below the low threshold.
- * Similarly, to cross from low -> high, the voltage must be higher than the
- * high threshold.
- *
- * Having two distinct thresholds filters out the bulk of noise from the
- * phototransistors.
- *
- * For converting the resulting high and low signals into rotation, a simple
- * quadrature decoder is used.
- */
-
-/* The minimum value returned by the ADC */
-#define ENCODER_MIN 0
-/* The maximum value returned by the ADC */
-#define ENCODER_MAX 1023
-
-/* Utilities for composing the encoder state */
-#define MAKE_STATE(HI_A, HI_B) (((uint8_t)((HI_A) & 0x1) << 1) | ((uint8_t)((HI_B) & 0x1)))
-#define STATE_A(st) ((st & 0x2) >> 1)
-#define STATE_B(st) (st & 0x1)
-#define LOLO MAKE_STATE(0, 0)
-#define HILO MAKE_STATE(1, 0)
-#define LOHI MAKE_STATE(0, 1)
-
-typedef enum {
-    CALIBRATION, /* Recalibrate encoder state by waiting for a 01 -> 00 or 10 -> 00 transistion */
-    DECODE /* Translate changes in the encoder state into movement */
-} encoder_state_t;
-
-static encoder_state_t mode;
-
-static uint8_t lastState;
-
-static uint16_t lowA;
-static uint16_t highA;
-static uint16_t lowB;
-static uint16_t highB;
-
-#define MOVE_UP 1
-#define MOVE_DOWN -1
-#define MOVE_NONE 0
-#define MOVE_ERR 0x7F
-static const uint8_t movement[] = {
-    // 00 -> 00, 01, 10, 11
-    MOVE_NONE, MOVE_DOWN, MOVE_UP, MOVE_ERR,
-    // 01 -> 00, 01, 10, 11
-    MOVE_UP, MOVE_NONE, MOVE_ERR, MOVE_DOWN,
-    // 10 -> 00, 01, 10, 11
-    MOVE_DOWN, MOVE_ERR, MOVE_NONE, MOVE_UP,
-    // 11 -> 00, 01, 10, 11
-    MOVE_ERR, MOVE_UP, MOVE_DOWN, MOVE_NONE
-};
-
-void opt_encoder_init(void) {
-    mode = CALIBRATION;
-    lastState = 0;
-
-    lowA = ENCODER_MAX;
-    lowB = ENCODER_MAX;
-    highA = ENCODER_MIN;
-    highB = ENCODER_MIN;
-}
-
-int8_t opt_encoder_handler(uint16_t encA, uint16_t encB) {
-    int8_t result = 0;
-
-    highA = MAX(encA, highA);
-    lowA = MIN(encA, lowA);
-    highB = MAX(encB, highB);
-    lowB = MIN(encB, lowB);
-
-    /* Only compute the thresholds after a large enough range is established */
-    if (highA - lowA > SCROLL_THRESH_RANGE_LIM && highB - lowB > SCROLL_THRESH_RANGE_LIM) {
-        const int16_t lowThresholdA = (highA + lowA) / 4;
-        const int16_t highThresholdA = (highA + lowA) - lowThresholdA;
-        const int16_t lowThresholdB = (highB + lowB) / 4;
-        const int16_t highThresholdB = (highB + lowB) - lowThresholdB;
-
-        uint8_t state = MAKE_STATE(
-            STATE_A(lastState) ? encA > lowThresholdA : encA > highThresholdA,
-            STATE_B(lastState) ? encB > lowThresholdB : encB > highThresholdB
-        );
-
-        switch (mode) {
-            case CALIBRATION:
-                if ((lastState == HILO && state == LOLO)
-                        || (lastState == LOHI && state == LOLO))
-                    mode = DECODE;
-                else
-                    mode = CALIBRATION;
-                break;
-
-            case DECODE:
-                result = movement[lastState * 4 + state];
-                /* If we detect a state change that should not be possible,
-                 * then the wheel might have moved too fast and we need to
-                 * recalibrate the encoder position. */
-                mode = result == MOVE_ERR ? CALIBRATION : mode;
-                result = result == MOVE_ERR ? MOVE_NONE : result;
-
-                break;
-        }
-
-        lastState = state;
-    }
-
-    return result;
-}