From b73adf0dea567407bd5e6bd7921b607529a2aa4a Mon Sep 17 00:00:00 2001
From: Daniel Svensson <dsvensson@gmail.com>
Date: Sun, 29 May 2016 02:48:56 +0200
Subject: Support the Pegasus Hoof controller.

Replacement controller for Filco Majestouch TKL keyboards.

matrix.c ported from:
https://github.com/BathroomEpiphanies/epiphanies_tmk_keyboard

More details:
http://bathroomepiphanies.com/controllers/
---
 keyboards/pegasushoof/matrix.c | 204 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 204 insertions(+)
 create mode 100644 keyboards/pegasushoof/matrix.c

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

diff --git a/keyboards/pegasushoof/matrix.c b/keyboards/pegasushoof/matrix.c
new file mode 100644
index 0000000000..d2a74b8d72
--- /dev/null
+++ b/keyboards/pegasushoof/matrix.c
@@ -0,0 +1,204 @@
+/*
+Copyright 2014 Ralf Schmitt <ralf@bunkertor.net>
+Copyright 2016 Daniel Svensson <dsvensson@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 <avr/io.h>
+#include <util/delay.h>
+#include "wait.h"
+#include "print.h"
+#include "debug.h"
+#include "util.h"
+#include "matrix.h"
+
+static uint8_t debouncing = DEBOUNCING_DELAY;
+static matrix_row_t matrix[MATRIX_ROWS];
+static matrix_row_t matrix_debouncing[MATRIX_ROWS];
+
+static matrix_row_t read_cols(void);
+static void select_row(uint8_t col);
+
+inline uint8_t matrix_rows(void)
+{
+	return MATRIX_ROWS;
+}
+
+inline uint8_t matrix_cols(void)
+{
+	return MATRIX_COLS;
+}
+
+void matrix_init(void)
+{
+	/* Column output pins */
+	DDRD  |=  0b01111011;
+	/* Row input pins */
+	DDRC  &= ~0b10000000;
+	DDRB  &= ~0b01111111;
+	PORTC |=  0b10000000;
+	PORTB |=  0b01111111;
+
+	for (uint8_t i=0; i < MATRIX_ROWS; i++)  {
+		matrix[i] = 0;
+		matrix_debouncing[i] = 0;
+	}
+
+	matrix_init_quantum();
+}
+
+uint8_t matrix_scan(void)
+{
+	for (uint8_t col = 0; col < MATRIX_COLS; col++) {
+		select_row(col);
+		wait_us(30);
+		matrix_row_t rows = read_cols();
+		for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+			bool prev_bit = matrix_debouncing[row] & ((matrix_row_t)1<<col);
+			bool curr_bit = rows & (1<<row);
+			if (prev_bit != curr_bit) {
+				matrix_debouncing[row] ^= (matrix_row_t) 1 << col;
+				debouncing = DEBOUNCING_DELAY;
+			}
+		}
+	}
+
+	if (debouncing) {
+		if (--debouncing) {
+			wait_ms(1);
+		} else {
+			for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+				matrix[i] = matrix_debouncing[i];
+			}
+		}
+	}
+
+	matrix_scan_quantum();
+
+	return 1;
+}
+
+bool matrix_is_modified(void)
+{
+	if (debouncing)
+		return false;
+	return true;
+}
+
+inline
+bool matrix_is_on(uint8_t row, uint8_t col)
+{
+	return matrix[row] & 1 << col;
+}
+
+inline
+matrix_row_t matrix_get_row(uint8_t row)
+{
+	return matrix[row];
+}
+
+void matrix_print(void)
+{
+	print("\nr/c 0123456789ABCDEF\n");
+	for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+		phex(row); print(": ");
+		pbin_reverse16(matrix_get_row(row));
+		print("\n");
+	}
+}
+
+uint8_t matrix_key_count(void)
+{
+	uint8_t count = 0;
+	for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+		count += bitpop16(matrix[i]);
+	}
+	return count;
+}
+
+static matrix_row_t read_cols(void)
+{
+	return
+		(PINB & (1 << 5) ? 0 : 1 << 0) |
+		(PINC & (1 << 7) ? 0 : 1 << 1) |
+		(PINB & (1 << 4) ? 0 : 1 << 2) |
+		(PINB & (1 << 6) ? 0 : 1 << 3) |
+		(PINB & (1 << 1) ? 0 : 1 << 4) |
+		(PINB & (1 << 0) ? 0 : 1 << 5) |
+		(PINB & (1 << 3) ? 0 : 1 << 6) |
+		(PINB & (1 << 2) ? 0 : 1 << 7);
+}
+
+static void select_row(uint8_t col)
+{
+	switch (col) {
+		case 0:
+			PORTD = (PORTD & ~0b01111011) | 0b00110011;
+			break;
+		case 1:
+			PORTD = (PORTD & ~0b01111011) | 0b01110000;
+			break;
+		case 2:
+			PORTD = (PORTD & ~0b01111011) | 0b00010011;
+			break;
+		case 3:
+			PORTD = (PORTD & ~0b01111011) | 0b01101000;
+			break;
+		case 4:
+			PORTD = (PORTD & ~0b01111011) | 0b00001011;
+			break;
+		case 5:
+			PORTD = (PORTD & ~0b01111011) | 0b00111011;
+			break;
+		case 6:
+			PORTD = (PORTD & ~0b01111011) | 0b01111000;
+			break;
+		case 7:
+			PORTD = (PORTD & ~0b01111011) | 0b01100001;
+			break;
+		case 8:
+			PORTD = (PORTD & ~0b01111011) | 0b01101001;
+			break;
+		case 9:
+			PORTD = (PORTD & ~0b01111011) | 0b01110001;
+			break;
+		case 10:
+			PORTD = (PORTD & ~0b01111011) | 0b01101010;
+			break;
+		case 11:
+			PORTD = (PORTD & ~0b01111011) | 0b01100010;
+			break;
+		case 12:
+			PORTD = (PORTD & ~0b01111011) | 0b01111001;
+			break;
+		case 13:
+			PORTD = (PORTD & ~0b01111011) | 0b01100000;
+			break;
+		case 14:
+			PORTD = (PORTD & ~0b01111011) | 0b01000011;
+			break;
+		case 15:
+			PORTD = (PORTD & ~0b01111011) | 0b00011011;
+			break;
+		case 16:
+			PORTD = (PORTD & ~0b01111011) | 0b00100011;
+			break;
+		case 17:
+			PORTD = (PORTD & ~0b01111011) | 0b00101011;
+			break;
+	}
+}
-- 
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