1 files changed, 158 insertions, 0 deletions

diff --git a/keyboards/bpiphany/pegasushoof/2015/matrix.c b/keyboards/bpiphany/pegasushoof/2015/matrix.c
new file mode 100644
index 000000000..b05869fed
--- /dev/null
+++ b/keyboards/bpiphany/pegasushoof/2015/matrix.c
@@ -0,0 +1,158 @@
+/*
+  Copyright 2014 Ralf Schmitt <[email protected]>
+  Copyright 2016 Daniel Svensson <[email protected]>
+
+  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"
+#include "debounce.h"
+
+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);
+
+// user-defined overridable functions
+
+__attribute__((weak)) void matrix_init_kb(void) { matrix_init_user(); }
+
+__attribute__((weak)) void matrix_scan_kb(void) { matrix_scan_user(); }
+
+__attribute__((weak)) void matrix_init_user(void) {}
+
+__attribute__((weak)) void matrix_scan_user(void) {}
+
+// helper functions
+
+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)
+{
+  bool changed = false;
+  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 ((changed |= prev_bit != curr_bit)) {
+            matrix_debouncing[row] ^= (matrix_row_t) 1 << col;
+      }
+    }
+  }
+
+  debounce(matrix_debouncing, matrix, matrix_rows(), changed);
+  matrix_scan_quantum();
+
+  return (uint8_t)changed;
+}
+
+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++) {
+    print_hex8(row); print(": ");
+    print_bin_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_get_row(i));
+  }
+  return count;
+}
+
+static matrix_row_t read_cols(void)
+{
+  return
+    (PINB&(1<<5) ? 0 : ((matrix_row_t)1<<0)) |
+    (PINC&(1<<7) ? 0 : ((matrix_row_t)1<<1)) |
+    (PINB&(1<<4) ? 0 : ((matrix_row_t)1<<2)) |
+    (PINB&(1<<6) ? 0 : ((matrix_row_t)1<<3)) |
+    (PINB&(1<<1) ? 0 : ((matrix_row_t)1<<4)) |
+    (PINB&(1<<2) ? 0 : ((matrix_row_t)1<<5)) |
+    (PINB&(1<<3) ? 0 : ((matrix_row_t)1<<6)) |
+    (PINB&(1<<0) ? 0 : ((matrix_row_t)1<<7));
+}
+
+static void select_row(uint8_t col)
+{
+  switch (col) {
+  case  0: PORTD = (PORTD & ~0b01111011) | 0b00011011; break;
+  case  1: PORTD = (PORTD & ~0b01111011) | 0b01000011; break;
+  case  2: PORTD = (PORTD & ~0b01111011) | 0b01100000; break;
+  case  3: PORTD = (PORTD & ~0b01111011) | 0b01111001; break;
+  case  4: PORTD = (PORTD & ~0b01111011) | 0b01100010; break;
+  case  5: PORTD = (PORTD & ~0b01111011) | 0b01101010; break;
+  case  6: PORTD = (PORTD & ~0b01111011) | 0b01110001; break;
+  case  7: PORTD = (PORTD & ~0b01111011) | 0b01101001; break;
+  case  8: PORTD = (PORTD & ~0b01111011) | 0b01100001; break;
+  case  9: PORTD = (PORTD & ~0b01111011) | 0b01111000; break;
+  case 10: PORTD = (PORTD & ~0b01111011) | 0b00100011; break;
+  case 11: PORTD = (PORTD & ~0b01111011) | 0b00101011; break;
+  case 12: PORTD = (PORTD & ~0b01111011) | 0b00110011; break;
+  case 13: PORTD = (PORTD & ~0b01111011) | 0b01110000; break;
+  case 14: PORTD = (PORTD & ~0b01111011) | 0b00010011; break;
+  case 15: PORTD = (PORTD & ~0b01111011) | 0b01101000; break;
+  case 16: PORTD = (PORTD & ~0b01111011) | 0b00001011; break;
+  case 17: PORTD = (PORTD & ~0b01111011) | 0b00111011; break;
+  }
+}