Add initial support for the Makey Makey Classic (#16658)

1 files changed, 126 insertions, 0 deletions

diff --git a/keyboards/makeymakey/makeymakey.c b/keyboards/makeymakey/makeymakey.c
new file mode 100644
index 0000000000..77794416b2
--- /dev/null
+++ b/keyboards/makeymakey/makeymakey.c
@@ -0,0 +1,126 @@
+/* Copyright 2022 Jose Pablo Ramirez <jp.ramangulo@gmail.com>
+ *
+ * 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 "makeymakey.h"
+
+static pin_t pins[MATRIX_ROWS][MATRIX_COLS] = DIRECT_PINS;
+static pin_t led_pins[LED_PINS] = LED_PINS_HW;
+static bool led_state[MATRIX_COLS] = {0};
+static uint8_t led_cycle_counter = 0;
+
+void keyboard_post_init_kb(void) {
+    for(uint8_t row = 0; row < MATRIX_ROWS; row++)
+    {
+        for(uint8_t col = 0; col < MATRIX_COLS; col++)
+        {
+            writePinLow(pins[row][col]); //Disable internal pull-up resistors
+        }
+    }
+
+    keyboard_post_init_user();
+}
+
+void cycle_leds(void) {
+    for(uint8_t i = 0; i < 3; i++) {
+        setPinInput(led_pins[i]);
+        writePinLow(led_pins[i]);
+    }
+
+    led_cycle_counter++;
+    led_cycle_counter %= 6;
+
+    switch (led_cycle_counter) {
+        case 0:
+            if (led_state[0]) { // Up Arrow
+                setPinInput(led_pins[0]);
+                writePinLow(led_pins[0]);
+                setPinOutput(led_pins[1]);
+                writePinHigh(led_pins[1]);
+                setPinOutput(led_pins[2]);
+                writePinLow(led_pins[2]);
+            }
+            break;
+        case 1:
+            if (led_state[1]) { // Down Arrow
+                setPinOutput(led_pins[0]);
+                writePinHigh(led_pins[0]);
+                setPinOutput(led_pins[1]);
+                writePinLow(led_pins[1]);
+                setPinInput(led_pins[2]);
+                writePinLow(led_pins[2]);
+            }
+            break;
+        case 2:
+            if (led_state[2]) { // Left Arrow
+                setPinOutput(led_pins[0]);
+                writePinLow(led_pins[0]);
+                setPinOutput(led_pins[1]);
+                writePinHigh(led_pins[1]);
+                setPinInput(led_pins[2]);
+                writePinLow(led_pins[2]);
+            }
+            break;
+        case 3:
+            if (led_state[3]) { // Right Arrow
+                setPinInput(led_pins[0]);
+                writePinLow(led_pins[0]);
+                setPinOutput(led_pins[1]);
+                writePinLow(led_pins[1]);
+                setPinOutput(led_pins[2]);
+                writePinHigh(led_pins[2]);
+            }
+            break;
+        case 4:
+            if (led_state[4]) { // Space
+                setPinOutput(led_pins[0]);
+                writePinLow(led_pins[0]);
+                setPinInput(led_pins[1]);
+                writePinLow(led_pins[1]);
+                setPinOutput(led_pins[2]);
+                writePinHigh(led_pins[2]);
+              }
+            break;
+         case 5:
+            if (led_state[5]) { // Right Click
+                setPinOutput(led_pins[0]);
+                writePinHigh(led_pins[0]);
+                setPinInput(led_pins[1]);
+                writePinLow(led_pins[1]);
+                setPinOutput(led_pins[2]);
+                writePinLow(led_pins[2]);
+            }
+            break;
+        default:
+            break;
+    }
+}
+
+void matrix_scan_kb() {
+    cycle_leds();
+    matrix_scan_user();
+}
+
+bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
+
+    uint8_t row = record->event.key.row;
+    uint8_t col = record->event.key.col;
+
+    if(row == 0 && col >= 0 && col < MATRIX_COLS) {
+        led_state[col] = record->event.pressed;
+    }
+
+    return process_record_user(keycode, record);
+}