1 files changed, 139 insertions, 0 deletions
diff --git a/keyboards/miiiw/blackio83/matrix.c b/keyboards/miiiw/blackio83/matrix.c
new file mode 100644
index 0000000000..841ff3c16e
--- /dev/null
+++ b/keyboards/miiiw/blackio83/matrix.c
@@ -0,0 +1,139 @@
+/* Copyright 2023 ArthurCyy <https://github.com/ArthurCyy>
+ *
+ * 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 "quantum.h"
+#include "matrix.h"
+#include "common/shift_register.h"
+
+static uint8_t read_rows(void);
+static void    init_cols(void);
+static void    select_col(uint8_t col);
+static void    unselect_col(uint8_t col);
+static void    unselect_cols(void);
+
+static const pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
+static const pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
+
+#ifdef DIP_SWITCH_PINS
+#    define NUMBER_OF_DIP_SWITCHES (sizeof(dip_switch_pad) / sizeof(pin_t))
+static pin_t dip_switch_pad[] = DIP_SWITCH_PINS;
+#endif
+
+void matrix_init_custom(void) {
+    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+        setPinInputLow(row_pins[row]);
+    }
+    
+    shift_init();
+    init_cols();
+}
+
+bool matrix_scan_custom(matrix_row_t current_matrix[]) {
+    bool changed = false;
+
+    for (uint8_t col = 0; col < MATRIX_COLS; col++) {
+        select_col(col);
+        waitInputPinDelay();
+        uint8_t rows = read_rows();
+        for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+            bool prev_bit = ((uint32_t)(current_matrix[row]) & (matrix_row_t)(1UL << col)) ? 1 : 0;
+            bool curr_bit = ((uint32_t)rows & (uint32_t)(1UL << row)) ? 1 : 0;
+            if (prev_bit != curr_bit) {
+                current_matrix[row] = (uint32_t)(current_matrix[row]) ^ (uint32_t)(1UL << col);
+                changed = true;
+            }
+        }
+        unselect_col(col);
+    }
+
+    return changed;
+}
+
+void matrix_power_up(void) {
+    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+        palDisableLineEvent(row_pins[row]);
+        setPinInputLow(row_pins[row]);
+    }
+    init_cols();
+#ifdef DIP_SWITCH_PINS
+    for (uint8_t i = 1; i < NUMBER_OF_DIP_SWITCHES; i++) {
+        setPinInputHigh(dip_switch_pad[i]);
+    }
+#endif
+}
+
+void matrix_power_down(void) {
+    unselect_cols();
+    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+        setPinInputLow(row_pins[row]);
+        palEnableLineEvent(row_pins[row], PAL_EVENT_MODE_RISING_EDGE);
+    }
+#ifdef DIP_SWITCH_PINS
+    for (uint8_t i = 1; i < NUMBER_OF_DIP_SWITCHES; i++) {
+        setPinInputLow(dip_switch_pad[i]);
+    }
+#endif
+}
+
+static uint8_t read_rows(void) {
+    uint8_t row_value = 0;
+    for(uint8_t row = 0; row < MATRIX_ROWS; row++) {
+        row_value |= (readPin(row_pins[row]) << row);
+    }
+    return row_value;
+}
+
+static void init_cols(void) {
+    shift_writeAll(0);
+    for(uint8_t col = 0; col < MATRIX_COLS; col++) {
+        if(col_pins[col] < H0) {
+            setPinOutput(col_pins[col]);
+            writePinLow(col_pins[col]);
+        }
+    }
+}
+
+static void select_col(uint8_t col) {
+    if(col_pins[col] < H0){
+        writePinHigh(col_pins[col]);
+        waitInputPinDelay();
+        waitInputPinDelay();
+        waitInputPinDelay();
+        waitInputPinDelay();
+        waitInputPinDelay();
+        waitInputPinDelay();
+    }else{
+        shift_writePin(col_pins[col], 1);
+    }
+}
+
+static void unselect_col(uint8_t col) {
+    if(col_pins[col] < H0){
+        writePinLow(col_pins[col]);
+    }else{
+        shift_writePin(col_pins[col], 0);
+    }
+}
+
+static void unselect_cols(void) {
+    shift_writeAll(1);
+    for(uint8_t col = 0; col < MATRIX_COLS; col++) {
+        if(col_pins[col] < H0) {
+            setPinOutput(col_pins[col]);
+            writePinHigh(col_pins[col]);
+        }
+    }
+}