1 files changed, 168 insertions, 0 deletions

diff --git a/keyboards/preonic/rev3_drop/matrix.c b/keyboards/preonic/rev3_drop/matrix.c
new file mode 100644
index 000000000..392997e0a
--- /dev/null
+++ b/keyboards/preonic/rev3_drop/matrix.c
@@ -0,0 +1,168 @@
+/*
+ * 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 "debug.h"
+#include "matrix.h"
+
+/*
+ *     col: { B11, B10, B2, B1, A7, B0 }
+ *     row: { A10, A9, A8, B15, C13, C14, C15, A2 }
+ */
+/* 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) {
+    dprintf("matrix init\n");
+    // debug_matrix = true;
+
+    // actual matrix setup
+    palSetPadMode(GPIOB, 11, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOB, 10, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOB, 2, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOB, 1, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOA, 7, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOB, 0, PAL_MODE_OUTPUT_PUSHPULL);
+
+    palSetPadMode(GPIOA, 10, PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOA, 9, PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOA, 8, PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOB, 15, PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOC, 13, PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOC, 14, PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOC, 15, PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOA, 2, PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOA, 3, 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_COLS * sizeof(matrix_row_t));
+
+    matrix_init_quantum();
+}
+
+uint8_t matrix_scan(void) {
+    // actual matrix
+    for (int col = 0; col < MATRIX_COLS; col++) {
+        matrix_row_t data = 0;
+
+        // strobe col { B11, B10, B2, B1, A7, B0 }
+        switch (col) {
+            case 0:
+                palSetPad(GPIOB, 11);
+                break;
+            case 1:
+                palSetPad(GPIOB, 10);
+                break;
+            case 2:
+                palSetPad(GPIOB, 2);
+                break;
+            case 3:
+                palSetPad(GPIOB, 1);
+                break;
+            case 4:
+                palSetPad(GPIOA, 7);
+                break;
+            case 5:
+                palSetPad(GPIOB, 0);
+                break;
+        }
+
+        // need wait to settle pin state
+        wait_us(20);
+
+        // read row data { A10, A9, A8, B15, C13, C14, C15, A2 }
+        data = ((palReadPad(GPIOA, 10) << 0) | (palReadPad(GPIOA, 9) << 1) | (palReadPad(GPIOA, 8) << 2) | (palReadPad(GPIOB, 15) << 3) | (palReadPad(GPIOC, 13) << 4) | (palReadPad(GPIOC, 14) << 5) | (palReadPad(GPIOC, 15) << 6) | (palReadPad(GPIOA, 2) << 7) | (palReadPad(GPIOA, 3) << 8) | (palReadPad(GPIOA, 6) << 9));
+
+        // unstrobe  col { B11, B10, B2, B1, A7, B0 }
+        switch (col) {
+            case 0:
+                palClearPad(GPIOB, 11);
+                break;
+            case 1:
+                palClearPad(GPIOB, 10);
+                break;
+            case 2:
+                palClearPad(GPIOB, 2);
+                break;
+            case 3:
+                palClearPad(GPIOB, 1);
+                break;
+            case 4:
+                palClearPad(GPIOA, 7);
+                break;
+            case 5:
+                palClearPad(GPIOB, 0);
+                break;
+        }
+
+        if (matrix_debouncing[col] != data) {
+            matrix_debouncing[col] = data;
+            debouncing             = true;
+            debouncing_time        = timer_read();
+        }
+    }
+
+    if (debouncing && timer_elapsed(debouncing_time) > DEBOUNCE) {
+        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) {
+    dprintf("\nr/c 01234567\n");
+    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+        dprintf("%X0: ", row);
+        matrix_row_t data = matrix_get_row(row);
+        for (int col = 0; col < MATRIX_COLS; col++) {
+            if (data & (1 << col))
+                dprintf("1");
+            else
+                dprintf("0");
+        }
+        dprintf("\n");
+    }
+}