adding noah keyboard (#7432)

* adding noah keyboard

* Update keyboards/matrix/noah/config.h

Co-Authored-By: Drashna Jaelre <drashna@live.com>

* Update keyboards/matrix/noah/noah.c

Co-Authored-By: Drashna Jaelre <drashna@live.com>

1 files changed, 166 insertions, 0 deletions

diff --git a/keyboards/matrix/noah/matrix.c b/keyboards/matrix/noah/matrix.c
new file mode 100644
index 000000000..02861a8e3
--- /dev/null
+++ b/keyboards/matrix/noah/matrix.c
@@ -0,0 +1,166 @@
+/**
+ * matrix.c
+ */
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <string.h>
+#include "hal.h"
+#include "quantum.h"
+#include "timer.h"
+#include "wait.h"
+#include "printf.h"
+#include "matrix.h"
+
+/**
+ *
+ * Row pins are input with internal pull-down.
+ * Column pins are output and strobe with high.
+ * Key is high or 1 when it turns on.
+ *
+ */
+/* matrix state(1:on, 0:off) */
+static matrix_row_t matrix[MATRIX_ROWS];
+static matrix_row_t matrix_debouncing[MATRIX_COLS];
+static bool debouncing = false;
+static uint16_t debouncing_time = 0;
+
+void matrix_init(void)
+{
+    //debug_enable = true;
+    palSetLineMode(LINE_COL_1, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetLineMode(LINE_COL_2, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetLineMode(LINE_COL_3, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetLineMode(LINE_COL_4, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetLineMode(LINE_COL_5, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetLineMode(LINE_COL_6, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetLineMode(LINE_COL_7, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetLineMode(LINE_COL_8, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetLineMode(LINE_COL_9, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetLineMode(LINE_COL_10, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetLineMode(LINE_COL_11, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetLineMode(LINE_COL_12, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetLineMode(LINE_COL_13, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetLineMode(LINE_COL_14, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetLineMode(LINE_COL_15, PAL_MODE_OUTPUT_PUSHPULL);
+
+    palSetLineMode(LINE_ROW_1, PAL_MODE_INPUT_PULLDOWN);
+    palSetLineMode(LINE_ROW_2, PAL_MODE_INPUT_PULLDOWN);
+    palSetLineMode(LINE_ROW_3, PAL_MODE_INPUT_PULLDOWN);
+    palSetLineMode(LINE_ROW_4, PAL_MODE_INPUT_PULLDOWN);
+    palSetLineMode(LINE_ROW_5, PAL_MODE_INPUT_PULLDOWN);
+
+    palClearLine(LINE_COL_1);
+    palClearLine(LINE_COL_2);
+    palClearLine(LINE_COL_3);
+    palClearLine(LINE_COL_4);
+    palClearLine(LINE_COL_5);
+    palClearLine(LINE_COL_6);
+    palClearLine(LINE_COL_7);
+    palClearLine(LINE_COL_8);
+    palClearLine(LINE_COL_9);
+    palClearLine(LINE_COL_10);
+    palClearLine(LINE_COL_11);
+    palClearLine(LINE_COL_12);
+    palClearLine(LINE_COL_13);
+    palClearLine(LINE_COL_14);
+    palClearLine(LINE_COL_15);
+
+    memset(matrix, 0, MATRIX_ROWS * sizeof(matrix_row_t));
+    memset(matrix_debouncing, 0, MATRIX_COLS * sizeof(matrix_row_t));
+
+    matrix_init_quantum();
+}
+
+uint8_t matrix_scan(void)
+{
+    for (int col = 0; col < MATRIX_COLS; col++) {
+        matrix_row_t data = 0;
+        switch (col) {
+            case 0: palSetLine(LINE_COL_1); break;
+            case 1: palSetLine(LINE_COL_2); break;
+            case 2: palSetLine(LINE_COL_3); break;
+            case 3: palSetLine(LINE_COL_4); break;
+            case 4: palSetLine(LINE_COL_5); break;
+            case 5: palSetLine(LINE_COL_6); break;
+            case 6: palSetLine(LINE_COL_7); break;
+            case 7: palSetLine(LINE_COL_8); break;
+            case 8: palSetLine(LINE_COL_9); break;
+            case 9: palSetLine(LINE_COL_10); break;
+            case 10: palSetLine(LINE_COL_11); break;
+            case 11: palSetLine(LINE_COL_12); break;
+            case 12: palSetLine(LINE_COL_13); break;
+            case 13: palSetLine(LINE_COL_14); break;
+            case 14: palSetLine(LINE_COL_15); break;
+        }
+
+        // need wait to settle pin state
+        wait_us(20);
+
+        data = (
+            (palReadLine(LINE_ROW_1) << 0 ) |
+            (palReadLine(LINE_ROW_2) << 1 ) |
+            (palReadLine(LINE_ROW_3) << 2 ) |
+            (palReadLine(LINE_ROW_4) << 3 ) |
+            (palReadLine(LINE_ROW_5) << 4 )
+        );
+
+        switch (col) {
+            case 0: palClearLine(LINE_COL_1); break;
+            case 1: palClearLine(LINE_COL_2); break;
+            case 2: palClearLine(LINE_COL_3); break;
+            case 3: palClearLine(LINE_COL_4); break;
+            case 4: palClearLine(LINE_COL_5); break;
+            case 5: palClearLine(LINE_COL_6); break;
+            case 6: palClearLine(LINE_COL_7); break;
+            case 7: palClearLine(LINE_COL_8); break;
+            case 8: palClearLine(LINE_COL_9); break;
+            case 9: palClearLine(LINE_COL_10); break;
+            case 10: palClearLine(LINE_COL_11); break;
+            case 11: palClearLine(LINE_COL_12); break;
+            case 12: palClearLine(LINE_COL_13); break;
+            case 13: palClearLine(LINE_COL_14); break;
+            case 14: palClearLine(LINE_COL_15); break;
+        }
+
+        if (matrix_debouncing[col] != data) {
+            matrix_debouncing[col] = data;
+            debouncing = true;
+            debouncing_time = timer_read();
+        }
+    }
+
+    if (debouncing && timer_elapsed(debouncing_time) > DEBOUNCING_DELAY) {
+        for (int row = 0; row < MATRIX_ROWS; row++) {
+            matrix[row] = 0;
+            for (int col = 0; col < MATRIX_COLS; col++) {
+                matrix[row] |= ((matrix_debouncing[col] & (1 << row) ? 1 : 0) << col);
+            }
+        }
+        debouncing = false;
+    }
+
+    matrix_scan_quantum();
+
+    return 1;
+}
+
+bool matrix_is_on(uint8_t row, uint8_t col) { return (matrix[row] & (1<<col)); }
+
+matrix_row_t matrix_get_row(uint8_t row) { return matrix[row]; }
+
+void matrix_print(void)
+{
+    printf("\nr/c 01234567\n");
+    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+        printf("%X0: ", row);
+        matrix_row_t data = matrix_get_row(row);
+        for (int col = 0; col < MATRIX_COLS; col++) {
+            if (data & (1<<col))
+                printf("1");
+            else
+                printf("0");
+        }
+        printf("\n");
+    }
+}