From 65fef7ef9274c27bd2aea5a1cd637d44024a1322 Mon Sep 17 00:00:00 2001
From: Jack Humbert <jack.humb@gmail.com>
Date: Wed, 19 Dec 2018 18:33:16 -0500
Subject: [PATCH] add custom matrix

---
 keyboards/moonlander/matrix.c | 165 ++++++++++++++++++++++++++++++++++
 1 file changed, 165 insertions(+)
 create mode 100644 keyboards/moonlander/matrix.c

diff --git a/keyboards/moonlander/matrix.c b/keyboards/moonlander/matrix.c
new file mode 100644
index 0000000000..8bf923b60f
--- /dev/null
+++ b/keyboards/moonlander/matrix.c
@@ -0,0 +1,165 @@
+/*
+Copyright 2018 Jack Humbert <jack.humb@gmail.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 <stdint.h>
+#include <stdbool.h>
+#include <string.h>
+#include "hal.h"
+#include "timer.h"
+#include "wait.h"
+#include "printf.h"
+#include "backlight.h"
+#include "matrix.h"
+#include "action.h"
+#include "keycode.h"
+#include <string.h>
+
+/*
+#define MATRIX_ROW_PINS { B10, B11, B12, B13, B14, B15 } outputs
+#define MATRIX_COL_PINS { A0, A1, A2, A3, A4, A5, A6 }   inputs
+ */
+/* 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;
+
+__attribute__ ((weak))
+void matrix_init_user(void) {}
+
+__attribute__ ((weak))
+void matrix_scan_user(void) {}
+
+__attribute__ ((weak))
+void matrix_init_kb(void) {
+  matrix_init_user();
+}
+
+__attribute__ ((weak))
+void matrix_scan_kb(void) {
+  matrix_scan_user();
+}
+
+void matrix_init(void) {
+    printf("matrix init\n");
+    //debug_matrix = true;
+
+    // outputs
+    palSetPadMode(GPIOB, 10,  PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOB, 11,  PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOB, 12,  PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOB, 13,  PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOB, 14,  PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOB, 15,  PAL_MODE_OUTPUT_PUSHPULL);
+
+    // inputs
+    palSetPadMode(GPIOA, 0, PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOA, 1, PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOA, 2, PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOA, 3, PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOA, 4, PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOA, 5, PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOA, 6, PAL_MODE_INPUT_PULLDOWN);
+
+    memset(matrix, 0, MATRIX_ROWS * sizeof(matrix_row_t));
+    memset(matrix_debouncing, 0, MATRIX_ROWS * sizeof(matrix_row_t));
+
+    matrix_init_quantum();
+}
+
+uint8_t matrix_scan(void) {
+
+    // actual matrix
+    for (int row = 0; row < MATRIX_ROWS; row++) {
+        matrix_row_t data = 0;
+
+        // strobe row
+        switch (row) {
+            case 0: palSetPad(GPIOB, 10); break;
+            case 1: palSetPad(GPIOB, 11); break;
+            case 2: palSetPad(GPIOB, 12); break;
+            case 3: palSetPad(GPIOB, 13); break;
+            case 4: palSetPad(GPIOB, 14); break;
+            case 5: palSetPad(GPIOB, 15); break;
+        }
+
+        // need wait to settle pin state
+        wait_us(20);
+
+        // read col data
+        data = (
+            (palReadPad(GPIOA, 0) << 0 ) |
+            (palReadPad(GPIOA, 1) << 1 ) |
+            (palReadPad(GPIOA, 2) << 2 ) |
+            (palReadPad(GPIOA, 3) << 3 ) |
+            (palReadPad(GPIOA, 4) << 4 ) |
+            (palReadPad(GPIOA, 5) << 5 ) |
+            (palReadPad(GPIOA, 6) << 6 )
+        );
+
+        // unstrobe  row
+        switch (row) {
+            case 0: palClearPad(GPIOB, 10); break;
+            case 1: palClearPad(GPIOB, 11); break;
+            case 2: palClearPad(GPIOB, 12); break;
+            case 3: palClearPad(GPIOB, 13); break;
+            case 4: palClearPad(GPIOB, 14); break;
+            case 5: palClearPad(GPIOB, 15); break;
+        }
+
+        if (matrix_debouncing[row] != data) {
+            matrix_debouncing[row] = 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] = matrix_debouncing[row];
+        }
+        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");
+    }
+}