From 8377d5fdc57ab0a4f1757d9f787592ede1b94cfe Mon Sep 17 00:00:00 2001
From: Kaleb Elwert <belak@coded.io>
Date: Tue, 3 Jan 2017 23:41:52 -0800
Subject: Initial whitefox support

---
 keyboards/whitefox/matrix.c | 132 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100644 keyboards/whitefox/matrix.c

(limited to 'keyboards/whitefox/matrix.c')

diff --git a/keyboards/whitefox/matrix.c b/keyboards/whitefox/matrix.c
new file mode 100644
index 000000000..ce35bca28
--- /dev/null
+++ b/keyboards/whitefox/matrix.c
@@ -0,0 +1,132 @@
+#include <stdint.h>
+#include <stdbool.h>
+#include <string.h>
+#include "hal.h"
+#include "timer.h"
+#include "wait.h"
+#include "print.h"
+#include "matrix.h"
+
+
+/*
+ * Matt3o's WhiteFox
+ * Column pins are input with internal pull-down. Row pins are output and strobe with high.
+ * Key is high or 1 when it turns on.
+ *
+ *     col: { PTD0, PTD1, PTD4, PTD5, PTD6, PTD7, PTC1, PTC2 }
+ *     row: { PTB2, PTB3, PTB18, PTB19, PTC0, PTC8, PTC9, PTC10, PTC11 }
+ */
+/* matrix state(1:on, 0:off) */
+static matrix_row_t matrix[MATRIX_ROWS];
+static matrix_row_t matrix_debouncing[MATRIX_ROWS];
+static bool debouncing = false;
+static uint16_t debouncing_time = 0;
+
+
+void matrix_init(void)
+{
+//debug_matrix = true;
+    /* Column(sense) */
+    palSetPadMode(GPIOD, 0,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOD, 1,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOD, 4,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOD, 5,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOD, 6,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOD, 7,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOC, 1,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOC, 2,  PAL_MODE_INPUT_PULLDOWN);
+
+    /* Row(strobe) */
+    palSetPadMode(GPIOB, 2,  PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOB, 3,  PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOB, 18, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOB, 19, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOC, 0,  PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOC, 8,  PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOC, 9,  PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOC, 10, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOC, 11, PAL_MODE_OUTPUT_PUSHPULL);
+
+    memset(matrix, 0, MATRIX_ROWS);
+    memset(matrix_debouncing, 0, MATRIX_ROWS);
+}
+
+uint8_t matrix_scan(void)
+{
+    for (int row = 0; row < MATRIX_ROWS; row++) {
+        matrix_row_t data = 0;
+
+        // strobe row
+        switch (row) {
+            case 0: palSetPad(GPIOB, 2);    break;
+            case 1: palSetPad(GPIOB, 3);    break;
+            case 2: palSetPad(GPIOB, 18);   break;
+            case 3: palSetPad(GPIOB, 19);   break;
+            case 4: palSetPad(GPIOC, 0);    break;
+            case 5: palSetPad(GPIOC, 8);    break;
+            case 6: palSetPad(GPIOC, 9);    break;
+            case 7: palSetPad(GPIOC, 10);   break;
+            case 8: palSetPad(GPIOC, 11);   break;
+        }
+
+        wait_us(1); // need wait to settle pin state
+
+        // read col data: { PTD0, PTD1, PTD4, PTD5, PTD6, PTD7, PTC1, PTC2 }
+        data = ((palReadPort(GPIOC) & 0x06UL) << 5) |
+               ((palReadPort(GPIOD) & 0xF0UL) >> 2) |
+                (palReadPort(GPIOD) & 0x03UL);
+
+        // un-strobe row
+        switch (row) {
+            case 0: palClearPad(GPIOB, 2);  break;
+            case 1: palClearPad(GPIOB, 3);  break;
+            case 2: palClearPad(GPIOB, 18); break;
+            case 3: palClearPad(GPIOB, 19); break;
+            case 4: palClearPad(GPIOC, 0);  break;
+            case 5: palClearPad(GPIOC, 8);  break;
+            case 6: palClearPad(GPIOC, 9);  break;
+            case 7: palClearPad(GPIOC, 10); break;
+            case 8: palClearPad(GPIOC, 11); break;
+        }
+
+        if (matrix_debouncing[row] != data) {
+            matrix_debouncing[row] = data;
+            debouncing = true;
+            debouncing_time = timer_read();
+        }
+    }
+
+    if (debouncing && timer_elapsed(debouncing_time) > DEBOUNCE) {
+        for (int row = 0; row < MATRIX_ROWS; row++) {
+            matrix[row] = matrix_debouncing[row];
+        }
+        debouncing = false;
+    }
+    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)
+{
+    xprintf("\nr/c 01234567\n");
+    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+        xprintf("%X0: ", row);
+        matrix_row_t data = matrix_get_row(row);
+        for (int col = 0; col < MATRIX_COLS; col++) {
+            if (data & (1<<col))
+                xprintf("1");
+            else
+                xprintf("0");
+        }
+        xprintf("\n");
+    }
+}
-- 
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