1 files changed, 131 insertions, 0 deletions
diff --git a/keyboards/work_louder/micro/matrix.c b/keyboards/work_louder/micro/matrix.c
new file mode 100644
index 0000000000..d2ae16ad9c
--- /dev/null
+++ b/keyboards/work_louder/micro/matrix.c
@@ -0,0 +1,131 @@
+// Copyright 2022 Christopher Courtney, aka Drashna Jael're  (@drashna) <drashna@live.com>
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+/*
+ * scan matrix
+ */
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/io.h>
+#include "wait.h"
+#include "print.h"
+#include "debug.h"
+#include "util.h"
+#include "matrix.h"
+#include "debounce.h"
+#include QMK_KEYBOARD_H
+
+/* matrix state(1:on, 0:off) */
+extern matrix_row_t matrix[MATRIX_ROWS];     // debounced values
+extern matrix_row_t raw_matrix[MATRIX_ROWS]; // raw values
+
+static const pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
+static const pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
+#define MATRIX_ROW_SHIFTER ((matrix_row_t)1)
+
+static inline void setPinOutput_writeLow(pin_t pin) {
+    ATOMIC_BLOCK_FORCEON {
+        setPinOutput(pin);
+        writePinLow(pin);
+    }
+}
+
+static inline void setPinOutput_writeHigh(pin_t pin) {
+    ATOMIC_BLOCK_FORCEON {
+        setPinOutput(pin);
+        writePinHigh(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_row(uint8_t row) {
+    pin_t pin = row_pins[row];
+    if (pin != NO_PIN) {
+        setPinOutput_writeLow(pin);
+        return true;
+    }
+    return false;
+}
+
+static void unselect_row(uint8_t row) {
+    pin_t pin = row_pins[row];
+    if (pin != NO_PIN) {
+        setPinInputHigh_atomic(pin);
+    }
+}
+
+static void unselect_rows(void) {
+    for (uint8_t x = 0; x < MATRIX_ROWS; x++) {
+        unselect_row(x);
+    }
+}
+
+__attribute__((weak)) void matrix_init_custom(void) {
+    unselect_rows();
+    for (uint8_t x = 0; x < MATRIX_COLS; x++) {
+        if (col_pins[x] != NO_PIN) {
+            setPinInputHigh_atomic(col_pins[x]);
+        }
+    }
+    setPinInputHigh_atomic(F7);
+    setPinInputHigh_atomic(F0);
+}
+
+void matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
+    // Start with a clear matrix row
+    matrix_row_t current_row_value = 0;
+
+    if (!select_row(current_row)) { // Select row
+        return;                     // skip NO_PIN row
+    }
+    matrix_output_select_delay();
+
+    // For each col...
+    matrix_row_t row_shifter = MATRIX_ROW_SHIFTER;
+    for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++, row_shifter <<= 1) {
+        uint8_t pin_state = 0;
+        if (current_row == 3 && col_index == 0) {
+            pin_state = !readMatrixPin(F7);
+        } else if (current_row == 3 && col_index == 3) {
+            pin_state = !readMatrixPin(F0);
+        } else {
+            pin_state = readMatrixPin(col_pins[col_index]);
+        }
+        // Populate the matrix row with the state of the col pin
+        current_row_value |= pin_state ? 0 : row_shifter;
+    }
+
+    // Unselect row
+    unselect_row(current_row);
+    matrix_output_unselect_delay(current_row, current_row_value != 0); // wait for all Col signals to go HIGH
+
+    // Update the matrix
+    current_matrix[current_row] = current_row_value;
+}
+
+bool matrix_scan_custom(matrix_row_t current_matrix[]) {
+    static matrix_row_t temp_matrix[MATRIX_ROWS] = {0};
+
+    for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) {
+        matrix_read_cols_on_row(temp_matrix, current_row);
+    }
+
+    bool changed = memcmp(current_matrix, temp_matrix, sizeof(temp_matrix)) != 0;
+    if (changed) {
+        memcpy(current_matrix, temp_matrix, sizeof(temp_matrix));
+    }
+    return changed;
+}