Added wireless support; Added Lemokey L3; Added Keychron V1 Max

keyboards/keychron/k8_pro/matrix.c

@@ -0,0 +1,173 @@
+/* Copyright 2021 @ Keychron (https://www.keychron.com)
+ *
+ * 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 "q1_bluetooth.h"
+#include "stdint.h"
+#include "hal.h"
+#include "gpio.h"
+#include "quantum.h"
+
+#define HC595_STCP A0
+#define HC595_SHCP A1
+#define HC595_DS C15
+
+pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
+pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
+
+static inline void HC595_delay(uint16_t n) {
+    while (n-- > 0) {
+        asm volatile("nop" ::: "memory");
+    };
+}
+
+static void HC595_output(uint16_t data) {
+    uint8_t i;
+    uint8_t n = 1;
+
+    for (i = 16; i > 0; i--) {
+        writePinLow(HC595_SHCP);
+
+        if (data & 0x8000)
+            writePinHigh(HC595_DS);
+        else
+            writePinLow(HC595_DS);
+
+        data <<= 1;
+
+        HC595_delay(n);
+
+        writePinHigh(HC595_SHCP);
+        HC595_delay(n);
+    }
+
+    HC595_delay(n);
+    writePinLow(HC595_STCP);
+    HC595_delay(n);
+    writePinHigh(HC595_STCP);
+}
+
+static inline void setPinOutput_writeLow(pin_t pin) {
+    ATOMIC_BLOCK_FORCEON {
+        setPinOutput(pin);
+        writePinLow(pin);
+    }
+}
+
+static inline void setPinInputHigh_atomic(pin_t pin) {
+    ATOMIC_BLOCK_FORCEON {
+        setPinInputHigh(pin);
+    }
+}
+
+static inline uint8_t readMatrixPin(pin_t pin) {
+    if (pin != NO_PIN) {
+        return readPin(pin);
+    } else {
+        return 1;
+    }
+}
+
+static bool select_col(uint8_t col) {
+    pin_t pin = col_pins[col];
+
+    if (col < 1) {
+        if (pin != NO_PIN) {
+            setPinOutput_writeLow(pin);
+            return true;
+        }
+    } else {
+        HC595_output(~(0x01 << (col - 1)));
+        return true;
+    }
+    return false;
+}
+
+static void unselect_col(uint8_t col) {
+    pin_t pin = col_pins[col];
+
+    if (col < 1) {
+        if (pin != NO_PIN) {
+            setPinInputHigh_atomic(pin);
+        }
+    } else {
+        // HC595_output(0x01 << (col - 1));
+        if (col >= MATRIX_COLS - 1) HC595_output(0xFFFF);
+    }
+}
+
+static void unselect_cols(void) {
+    if (col_pins[0] != NO_PIN) setPinInputHigh_atomic(col_pins[0]);
+    HC595_output(0xFFFF);
+}
+
+void select_all_cols(void) {
+    if (col_pins[0] != NO_PIN) setPinOutput_writeLow(col_pins[0]);
+    HC595_output(0x0000);
+}
+
+void matrix_read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) {
+
+    // Select col
+    if (!select_col(current_col)) { // select col
+        return;                     // skip NO_PIN col
+    }
+
+    HC595_delay(100);
+
+    // For each row...
+    for (uint8_t row_index = 0; row_index < MATRIX_ROWS; row_index++) {
+        // Check row pin state
+        if (readMatrixPin(row_pins[row_index]) == 0) {
+            // Pin LO, set col bit
+            current_matrix[row_index] |= (MATRIX_ROW_SHIFTER << current_col);
+            // key_pressed = true;
+        } else {
+            // Pin HI, clear col bit
+            current_matrix[row_index] &= ~(MATRIX_ROW_SHIFTER << current_col);
+        }
+    }
+
+    unselect_col(current_col);
+    HC595_delay(100);
+}
+
+void matrix_init_custom(void) {
+    for (uint8_t x = 0; x < MATRIX_ROWS; x++) {
+        if (row_pins[x] != NO_PIN) {
+            setPinInputHigh_atomic(row_pins[x]);
+        }
+    }
+    setPinOutput(HC595_DS);
+    setPinOutput(HC595_STCP);
+    setPinOutput(HC595_SHCP);
+    unselect_cols();
+}
+
+bool matrix_scan_custom(matrix_row_t current_matrix[]) {
+    bool matrix_has_changed = false;
+
+    matrix_row_t curr_matrix[MATRIX_ROWS] = {0};
+
+    // Set col, read rows
+    for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
+        matrix_read_rows_on_col(curr_matrix, current_col);
+    }
+
+    matrix_has_changed = memcmp(current_matrix, curr_matrix, sizeof(curr_matrix)) != 0;
+    if (matrix_has_changed) memcpy(current_matrix, curr_matrix, sizeof(curr_matrix));
+
+    return matrix_has_changed;
+}