[Keyboard] Gingham (#6212)

* Initial

* Prepare for final release

* Final

* Update keyboards/gingham/matrix.c

Co-Authored-By: Drashna Jaelre <drashna@live.com>

* Update keyboards/gingham/rules.mk

Co-Authored-By: Drashna Jaelre <drashna@live.com>

* Update keyboards/gingham/rules.mk

Co-Authored-By: fauxpark <fauxpark@gmail.com>

* Update keyboards/gingham/config.h

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Update keyboards/gingham/gingham.h

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Update keyboards/hs60/v1/rules.mk

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Update keyboards/gingham/info.json

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Update keyboards/gingham/info.json

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Update keyboards/gingham/info.json

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Update keyboards/gingham/gingham.h

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Update keyboards/gingham/gingham.h

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Fixing copypastas

* Update keyboards/gingham/info.json

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Update keyboards/gingham/info.json

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Update keyboards/gingham/info.json

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Update keyboards/gingham/info.json

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* More thingies

1 files changed, 247 insertions, 0 deletions

diff --git a/keyboards/gingham/matrix.c b/keyboards/gingham/matrix.c
new file mode 100644
index 000000000..790ba9c28
--- /dev/null
+++ b/keyboards/gingham/matrix.c
@@ -0,0 +1,247 @@
+/*
+Copyright 2012-2019 Jun Wako, Jack Humbert, Yiancar
+
+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 "wait.h"
+#include "print.h"
+#include "debug.h"
+#include "util.h"
+#include "matrix.h"
+#include "debounce.h"
+#include "quantum.h"
+#include "i2c_master.h"
+
+#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
+
+#ifdef MATRIX_MASKED
+    extern const matrix_row_t matrix_mask[];
+#endif
+
+static const pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
+static const pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
+
+/* matrix state(1:on, 0:off) */
+static matrix_row_t raw_matrix[MATRIX_ROWS]; //raw values
+static matrix_row_t matrix[MATRIX_ROWS]; //debounced values
+
+__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;
+}
+
+//Deprecated.
+bool matrix_is_modified(void)
+{
+    if (debounce_active()) 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)
+{
+    // Matrix mask lets you disable switches in the returned matrix data. For example, if you have a
+    // switch blocker installed and the switch is always pressed.
+#ifdef MATRIX_MASKED
+    return matrix[row] & matrix_mask[row];
+#else
+    return matrix[row];
+#endif
+}
+
+void matrix_print(void)
+{
+    print_matrix_header();
+
+    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+        phex(row); print(": ");
+        print_matrix_row(row);
+        print("\n");
+    }
+}
+
+uint8_t matrix_key_count(void)
+{
+    uint8_t count = 0;
+    for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+        count += matrix_bitpop(i);
+    }
+    return count;
+}
+
+static void select_row(uint8_t row)
+{
+    setPinOutput(row_pins[row]);
+    writePinLow(row_pins[row]);
+}
+
+static void unselect_row(uint8_t row)
+{
+    setPinInputHigh(row_pins[row]);
+}
+
+static void unselect_rows(void)
+{
+    for(uint8_t x = 0; x < MATRIX_ROWS; x++) {
+        setPinInput(row_pins[x]);
+    }
+}
+
+static void init_pins(void) {
+    unselect_rows();
+    // Set I/O
+    uint8_t send_data = 0x07;
+    i2c_writeReg((PORT_EXPANDER_ADDRESS << 1), 0x00, &send_data, 1, 20);
+    // // Set Pull-up
+    i2c_writeReg((PORT_EXPANDER_ADDRESS << 1), 0x06, &send_data, 1, 20);
+
+    for (uint8_t x = 0; x < MATRIX_COLS; x++) {
+        if ( (x > 0) && (x < 12) ) {
+        setPinInputHigh(col_pins[x]);
+        }
+    }
+}
+
+static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
+{
+    // Store last value of row prior to reading
+    matrix_row_t last_row_value = current_matrix[current_row];
+
+    // Clear data in matrix row
+    current_matrix[current_row] = 0;
+
+    // Select row and wait for row selecton to stabilize
+    select_row(current_row);
+    wait_us(30);
+
+    // For each col...
+    for(uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
+        uint8_t pin_state;
+        // Select the col pin to read (active low)
+        switch (col_index) {
+            case 0 :
+                i2c_readReg((PORT_EXPANDER_ADDRESS << 1), 0x09, &pin_state, 1, 20);
+                pin_state = pin_state & 0x01;
+                break;
+            case 12 :
+                i2c_readReg((PORT_EXPANDER_ADDRESS << 1), 0x09, &pin_state, 1, 20);
+                pin_state = pin_state & (1 << 2);
+                break;
+            case 13 :
+                i2c_readReg((PORT_EXPANDER_ADDRESS << 1), 0x09, &pin_state, 1, 20);
+                pin_state = pin_state & (1 << 1);
+                break;
+            default :
+                pin_state = readPin(col_pins[col_index]);
+        }
+
+        // Populate the matrix row with the state of the col pin
+        current_matrix[current_row] |=  pin_state ? 0 : (ROW_SHIFTER << col_index);
+    }
+
+    // Unselect row
+    unselect_row(current_row);
+
+    return (last_row_value != current_matrix[current_row]);
+}
+
+void matrix_init(void) {
+
+    // Initialize I2C
+    i2c_init();
+
+    // initialize key pins
+    init_pins();
+
+    // initialize matrix state: all keys off
+    for (uint8_t i=0; i < MATRIX_ROWS; i++) {
+        raw_matrix[i] = 0;
+        matrix[i] = 0;
+    }
+
+    debounce_init(MATRIX_ROWS);
+
+    matrix_init_quantum();
+}
+
+uint8_t matrix_scan(void)
+{
+    bool changed = false;
+
+    // Set row, read cols
+    for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) {
+        changed |= read_cols_on_row(raw_matrix, current_row);
+    }
+
+    debounce(raw_matrix, matrix, MATRIX_ROWS, changed);
+
+    matrix_scan_quantum();
+    return (uint8_t)changed;
+}