1 files changed, 260 insertions, 0 deletions

diff --git a/keyboards/dp60/matrix.c b/keyboards/dp60/matrix.c
new file mode 100644
index 000000000..a9974757d
--- /dev/null
+++ b/keyboards/dp60/matrix.c
@@ -0,0 +1,260 @@
+/**
+ * matrix.c
+ *
+  Copyright 2020 astro <[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 "quantum.h"
+
+static uint8_t debouncing = DEBOUNCE;
+
+static matrix_row_t matrix[MATRIX_ROWS];
+static matrix_row_t matrix_debouncing[MATRIX_ROWS];
+
+static uint8_t read_rows(void);
+static void init_rows(void);
+static void init_cols(void);
+static void unselect_cols(void);
+static void select_col(uint8_t col);
+
+
+__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) {}
+
+void matrix_init(void)
+{
+  //setPinOutput(F0);
+  //writePinHigh(F0);
+  setPinOutput(B4);
+  writePinLow(B4);
+
+  init_cols();
+  init_rows();
+
+  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_col(col);
+    _delay_us(3);
+
+    uint8_t rows = read_rows();
+
+    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 = DEBOUNCE;
+      }
+    }
+    unselect_cols();
+  }
+
+  if (debouncing) {
+    if (--debouncing) {
+      _delay_ms(1);
+    } else {
+      for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+        matrix[i] = matrix_debouncing[i];
+      }
+    }
+  }
+
+  matrix_scan_quantum();
+  return 1;
+}
+
+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++) {
+    xprintf("%02X: %032lb\n", row, bitrev32(matrix_get_row(row)));
+  }
+}
+
+/*
+ * Row pin configuration
+ * row: 0    1    2    3    4
+ * pin: PE6  PF6  PF7  PB7  PD4
+ */
+static void init_rows(void)
+{
+  setPinInputHigh(E6);
+  setPinInputHigh(F6);
+  setPinInputHigh(F7);
+  setPinInputHigh(B7);
+  setPinInputHigh(D4);
+}
+
+static uint8_t read_rows()
+{
+  return ((readPin(E6) ? 0 : (1 << 0)) |
+          (readPin(F6) ? 0 : (1 << 1)) |
+          (readPin(F7) ? 0 : (1 << 2)) |
+          (readPin(B7) ? 0 : (1 << 3)) |
+          (readPin(D4) ? 0 : (1 << 4)));
+}
+
+/*
+ * Columns 0 - 13
+ * These columns uses two 74LVC138 3 to 8 bit demultiplexers.
+ * EN Pin, PF5, PD6
+ *
+ * col / pin:    PF0  PF1  PF4
+ * 0:             0    0    0
+ * 1:             1    0    0
+ * 2:             0    1    0
+ * 3:             1    1    0
+ * 4:             0    0    1
+ * 5:             1    0    1
+ * 6:             0    1    1
+ *               PD2  PD3  PD5
+ * 7:             0    0    0
+ * 8:             1    0    0
+ * 9:             0    1    0
+ * 10:            1    1    0
+ * 11:            0    0    1
+ * 12:            1    0    1
+ * 13:            0    1    1
+ *
+ */
+static void init_cols(void)
+{
+  setPinOutput(F0);
+  setPinOutput(F1);
+  setPinOutput(F4);
+  setPinOutput(F5);
+
+  setPinOutput(D2);
+  setPinOutput(D3);
+  setPinOutput(D5);
+  setPinOutput(D6);
+
+  unselect_cols();
+}
+
+static void unselect_cols(void)
+{
+  writePinHigh(F0);
+  writePinHigh(F1);
+  writePinHigh(F4);
+  writePinHigh(F5);
+
+  writePinHigh(D2);
+  writePinHigh(D3);
+  writePinHigh(D5);
+  writePinHigh(D6);
+}
+
+static void select_col(uint8_t col) {
+
+   switch (col) {
+        case 0:
+          writePinLow(F0);
+          writePinLow(F1);
+          writePinLow(F4);
+          break;
+        case 1:
+          writePinHigh(F0);
+          writePinLow(F1);
+          writePinLow(F4);
+          break;
+        case 2:
+          writePinLow(F0);
+          writePinHigh(F1);
+          writePinLow(F4);
+          break;
+        case 3:
+          writePinHigh(F0);
+          writePinHigh(F1);
+          writePinLow(F4);
+          break;
+        case 4:
+          writePinLow(F0);
+          writePinLow(F1);
+          writePinHigh(F4);
+          break;
+        case 5:
+          writePinHigh(F0);
+          writePinLow(F1);
+          writePinHigh(F4);
+          break;
+        case 6:
+          writePinLow(F0);
+          writePinHigh(F1);
+          writePinHigh(F4);
+          break;
+        case 7:
+          writePinLow(D2);
+          writePinLow(D3);
+          writePinLow(D5);
+          break;
+        case 8:
+          writePinHigh(D2);
+          writePinLow(D3);
+          writePinLow(D5);
+          break;
+        case 9:
+          writePinLow(D2);
+          writePinHigh(D3);
+          writePinLow(D5);
+          break;
+        case 10:
+          writePinHigh(D2);
+          writePinHigh(D3);
+          writePinLow(D5);
+          break;
+        case 11:
+          writePinLow(D2);
+          writePinLow(D3);
+          writePinHigh(D5);
+          break;
+        case 12:
+          writePinHigh(D2);
+          writePinLow(D3);
+          writePinHigh(D5);
+          break;
+        case 13:
+          writePinLow(D2);
+          writePinHigh(D3);
+          writePinHigh(D5);
+          break;
+    }
+}