[Keyboard] Add configs for Centromere keyboard (#7467)

* Create readme.md

* Add files for Centromere

* Add keymap files for Centromere

* Add default keymap for Centromere

* Create keymap directory

* Add keymap files

* keymap directory cleanup

* Keyboard keymap directory cleanup

* Update keyboards/centromere/config.h

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

* Update keyboards/centromere/config.h

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

* Update keyboards/centromere/config.h

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

* Update keymap.c

* Update keymap.c

* Update centromere.c

Changed LED control to GPIO functions

* Update centromere.h

* Update rules.mk

* Update keyboards/centromere/rules.mk

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

* Update keyboards/centromere/rules.mk

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

* Update keyboards/centromere/rules.mk

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

* Update keyboards/centromere/rules.mk

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

* Update keyboards/centromere/keymaps/default_u2/keymap.c

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

* Update keyboards/centromere/rules.mk

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

* Update keyboards/centromere/keymaps/default/keymap.c

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

* Update keyboards/centromere/centromere.h

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

* Update keyboards/centromere/centromere.h

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

* Update keyboards/centromere/centromere.h

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

* Update keyboards/centromere/rules.mk

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

* Update keyboards/centromere/centromere.c

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

* Update keyboards/centromere/centromere.h

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

* Update keyboards/centromere/centromere.h

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

* Update keyboards/centromere/rules.mk

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

* Apply suggestions from code review

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

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: fauxpark <fauxpark@gmail.com>

1 files changed, 153 insertions, 0 deletions

diff --git a/keyboards/centromere/matrix.c b/keyboards/centromere/matrix.c
new file mode 100644
index 0000000000..c5fc8db6ce
--- /dev/null
+++ b/keyboards/centromere/matrix.c
@@ -0,0 +1,153 @@
+/*
+Copyright 2012 Jun Wako
+Copyright 2014 Jack Humbert
+
+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>
+#if defined(__AVR__)
+#include <avr/io.h>
+#endif
+#include "wait.h"
+#include "print.h"
+#include "debug.h"
+#include "util.h"
+#include "matrix.h"
+#include "timer.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
+
+/* matrix state(1:on, 0:off) */
+static matrix_row_t matrix[MATRIX_ROWS];
+
+
+__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) {
+
+    matrix_init_quantum();
+}
+
+uint8_t matrix_scan(void)
+{
+    SERIAL_UART_INIT();
+
+    uint32_t timeout = 0;
+
+    //the s character requests the RF remote slave to send the matrix information
+    SERIAL_UART_DATA = 's';
+
+    //trust the external keystates, erase the last set of data
+    uint8_t uart_data[11] = {0};
+
+    //there are 10 bytes corresponding to 1w columns, and an end byte
+    for (uint8_t i = 0; i < 11; i++) {
+        //wait for the serial data, timeout if it's been too long
+        while(!SERIAL_UART_RXD_PRESENT){
+            timeout++;
+            if (timeout > 10000){
+                break;
+            }
+        }
+        uart_data[i] = SERIAL_UART_DATA;
+    }
+
+    //check for the end packet, the key state bytes use the LSBs, so 0xE0
+    //will only show up here if the correct bytes were recieved
+    if (uart_data[10] == 0xE0)
+    {
+        //shifting and transferring the keystates to the QMK matrix variable
+        for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+            matrix[i] = (uint16_t) uart_data[i*2] | (uint16_t) uart_data[i*2+1] << 5;
+        }
+    }
+
+
+    matrix_scan_quantum();
+    return 1;
+}
+
+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_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;
+}