Add support for Meira

1 files changed, 314 insertions, 0 deletions

diff --git a/keyboards/meira/matrix.c b/keyboards/meira/matrix.c
new file mode 100644
index 000000000..a4d8ec247
--- /dev/null
+++ b/keyboards/meira/matrix.c
@@ -0,0 +1,314 @@
+/*
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+Copyright 2017 Cole Markham <cole@ccmcomputing.net>
+
+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/>.
+*/
+
+/*
+ * scan matrix
+ */
+#include <stdint.h>
+#include <stdbool.h>
+#if defined(__AVR__)
+#include <avr/io.h>
+#endif
+#include "meira.h"
+#include "wait.h"
+#include "print.h"
+#include "debug.h"
+#include "util.h"
+#include "matrix.h"
+#include "config.h"
+#include "timer.h"
+
+#ifndef DEBOUNCING_DELAY
+#   define DEBOUNCING_DELAY 5
+#endif
+
+#if (DEBOUNCING_DELAY > 0)
+    static uint16_t debouncing_time;
+    static bool debouncing = false;
+#endif
+
+#if (MATRIX_COLS <= 8)
+#    define print_matrix_header()  print("\nr/c 01234567\n")
+#    define print_matrix_row(row)  print_bin_reverse8(matrix_get_row(row))
+#    define matrix_bitpop(i)       bitpop(matrix[i])
+#    define ROW_SHIFTER ((uint8_t)1)
+#elif (MATRIX_COLS <= 16)
+#    define print_matrix_header()  print("\nr/c 0123456789ABCDEF\n")
+#    define print_matrix_row(row)  print_bin_reverse16(matrix_get_row(row))
+#    define matrix_bitpop(i)       bitpop16(matrix[i])
+#    define ROW_SHIFTER ((uint16_t)1)
+#elif (MATRIX_COLS <= 32)
+#    define print_matrix_header()  print("\nr/c 0123456789ABCDEF0123456789ABCDEF\n")
+#    define print_matrix_row(row)  print_bin_reverse32(matrix_get_row(row))
+#    define matrix_bitpop(i)       bitpop32(matrix[i])
+#    define ROW_SHIFTER  ((uint32_t)1)
+#endif
+
+static matrix_row_t matrix_debouncing[MATRIX_ROWS];
+
+static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
+static const uint8_t col_pins[4] = MATRIX_COL_PINS;
+//static const uint8_t lrow_pins[MATRIX_ROWS] = LED_ROW_PINS;
+//static const uint8_t lcol_pins[4] = LED_COL_PINS;
+
+/* matrix state(1:on, 0:off) */
+static matrix_row_t matrix[MATRIX_ROWS];
+static matrix_row_t matrix_debouncing[MATRIX_ROWS];
+static void init_rows(void);
+//static void init_lcols(void);
+static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col);
+static void unselect_cols(void);
+static void select_col(uint8_t col);
+
+__attribute__ ((weak))
+void matrix_init_quantum(void) {
+    matrix_init_kb();
+}
+
+__attribute__ ((weak))
+void matrix_scan_quantum(void) {
+    matrix_scan_kb();
+}
+
+__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) {
+}
+
+inline
+uint8_t matrix_rows(void)
+{
+    return MATRIX_ROWS;
+}
+
+inline
+uint8_t matrix_cols(void)
+{
+    return MATRIX_COLS;
+}
+
+void matrix_init(void)
+{
+    debug_enable = true;
+    debug_matrix = true;
+    debug_mouse = true;
+    // initialize row and col
+    unselect_cols();
+    init_rows();
+//    init_lcols();
+
+//    TX_RX_LED_INIT;
+
+    // initialize matrix state: all keys off
+    for (uint8_t i=0; i < MATRIX_ROWS; i++) {
+        matrix[i] = 0;
+        matrix_debouncing[i] = 0;
+    }
+
+    matrix_init_quantum();
+
+}
+
+uint8_t _matrix_scan(void)
+{
+    // Set col, read rows
+    for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
+#       if (DEBOUNCING_DELAY > 0)
+            bool matrix_changed = read_rows_on_col(matrix_debouncing, current_col);
+            if (matrix_changed) {
+                debouncing = true;
+                debouncing_time = timer_read();
+            }
+#       else
+             read_rows_on_col(matrix, current_col);
+#       endif
+
+    }
+
+#   if (DEBOUNCING_DELAY > 0)
+        if (debouncing && (timer_elapsed(debouncing_time) > DEBOUNCING_DELAY)) {
+            for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+                matrix[i] = matrix_debouncing[i];
+            }
+            debouncing = false;
+        }
+#   endif
+
+	return 1;
+}
+
+uint8_t matrix_scan(void)
+{
+	uint8_t ret = _matrix_scan();
+	matrix_scan_quantum();
+//	// HACK backlighting
+//	for (uint8_t t = 0; t < meira_get_backlight_level(); t++) {
+//		for (uint8_t x = 0; x < 13; x++) {
+//			for (uint8_t y = 0; y < 4; y++) {
+//				uint8_t pin = lcol_pins[y];
+//				if ((x >> y) & 1) {
+//					_SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
+//				} else {
+//					_SFR_IO8((pin >> 4) + 2) &=  ~_BV(pin & 0xF); // LO
+//				}
+//			}
+//		}
+//	}
+	return ret;
+}
+
+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] & ((matrix_row_t)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 void init_rows(void)
+{
+    for(uint8_t x = 0; x < MATRIX_ROWS; x++) {
+        uint8_t pin = row_pins[x];
+        _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
+        _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
+//        // HACK backlighting
+//        uint8_t lpin = lrow_pins[x];
+//        _SFR_IO8((lpin >> 4) + 1) |= _BV(lpin & 0xF); // OUT
+//        _SFR_IO8((lpin >> 4) + 2) |=  _BV(lpin & 0xF); // HI
+    }
+}
+
+//static void init_lcols(void)
+//{
+//	for (uint8_t x = 0; x < 4; x++) {
+//		uint8_t pin = lcol_pins[x];
+//		_SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF); // OUT
+//		_SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HIGH
+//	}
+//}
+
+static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col)
+{
+    bool matrix_changed = false;
+
+    // Select col and wait for col selection to stabilize
+    select_col(current_col);
+    wait_us(30);
+
+    // For each row...
+    for(uint8_t row_index = 0; row_index < MATRIX_ROWS; row_index++)
+    {
+
+        // Store last value of row prior to reading
+        matrix_row_t last_row_value = current_matrix[row_index];
+
+        // Check row pin state
+        if ((_SFR_IO8(row_pins[row_index] >> 4) & _BV(row_pins[row_index] & 0xF)) == 0)
+        {
+            // Pin LO, set col bit
+            current_matrix[row_index] |= (ROW_SHIFTER << current_col);
+        }
+        else
+        {
+            // Pin HI, clear col bit
+            current_matrix[row_index] &= ~(ROW_SHIFTER << current_col);
+        }
+
+        // Determine if the matrix changed state
+        if ((last_row_value != current_matrix[row_index]) && !(matrix_changed))
+        {
+            matrix_changed = true;
+        }
+    }
+
+    // Unselect col
+    unselect_cols();
+
+    return matrix_changed;
+}
+
+static void select_col(uint8_t col)
+{
+#ifdef FLIPPED_BOARD
+	col = MATRIX_COLS - col - 1;
+#endif
+    for(uint8_t x = 0; x < 4; x++) {
+		uint8_t pin = col_pins[x];
+        _SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF); // OUT
+		if (((col >> x) & 0x1) == 1){
+			_SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HIGH
+		} else {
+			_SFR_IO8((pin >> 4) + 2) &=  ~_BV(pin & 0xF); // LOW
+		}
+	}
+}
+
+static void unselect_cols(void)
+{
+	// FIXME This really needs to use the global enable on the decoder, because currently this sets the value to col1
+    for(uint8_t x = 0; x < 4; x++) {
+        uint8_t pin = col_pins[x];
+        _SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF); // OUT
+        _SFR_IO8((pin >> 4) + 2) &=  ~_BV(pin & 0xF); // LOW
+    }
+}
+
+