From 19bf2359230e42ebc35c075d02903fd3f17cadfb Mon Sep 17 00:00:00 2001
From: lonkaars <l.leblansch@gmail.com>
Date: Thu, 7 Oct 2021 09:05:31 +0200
Subject: initial commit

---
 main/main.ino | 192 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 192 insertions(+)
 create mode 100644 main/main.ino

diff --git a/main/main.ino b/main/main.ino
new file mode 100644
index 0000000..55248db
--- /dev/null
+++ b/main/main.ino
@@ -0,0 +1,192 @@
+#define SERIAL_BAUD 115200
+#define MAX_CODE_LEN 1024
+
+#define PINOUT_KBM7 1
+#define PINOUT_KBM6 3
+#define PINOUT_KBM5 5
+#define PINOUT_KBM4 7
+#define PINOUT_KBM3 9
+#define PINOUT_KBM2 11
+#define PINOUT_KBM1 13
+#define PINOUT_LED_Y 6
+#define PINOUT_LED_R 8
+#define PINOUT_LED_G 10
+#define PINOUT_BUZZ 12
+#define PINOUT_SET 14
+#define PINOUT_RELAIS 16
+
+#define KB_ROW_1 PINOUT_KBM2
+#define KB_ROW_2 PINOUT_KBM3
+#define KB_ROW_3 PINOUT_KBM5
+#define KB_ROW_4 PINOUT_KBM7
+#define KB_COL_1 PINOUT_KBM1
+#define KB_COL_2 PINOUT_KBM4
+#define KB_COL_3 PINOUT_KBM6
+
+int kb_rows[] = { KB_ROW_1, KB_ROW_2, KB_ROW_3, KB_ROW_4 };
+int kb_cols[] = { KB_COL_1, KB_COL_2, KB_COL_3 };
+
+unsigned char kb[12], kb_old[12];
+
+unsigned char correct_code[] = { 0, 0, 0, 0 };
+unsigned char code[MAX_CODE_LEN];
+unsigned int codei = 0;
+
+typedef struct {
+	unsigned char key;
+	bool down;
+	unsigned long timestamp;
+} kb_event;
+
+void setup() {
+	// Start serial (vooral voor debugging)
+	Serial.begin(SERIAL_BAUD);
+
+	// keyboard kolommen als output
+	pinMode(KB_COL_1, OUTPUT);
+	pinMode(KB_COL_2, OUTPUT);
+	pinMode(KB_COL_3, OUTPUT);
+
+	// keyboard rijen als input
+	pinMode(KB_ROW_1, INPUT_PULLUP);
+	pinMode(KB_ROW_2, INPUT_PULLUP);
+	pinMode(KB_ROW_3, INPUT_PULLUP);
+	pinMode(KB_ROW_4, INPUT_PULLUP);
+}
+
+void kb_scan() {
+	// kopieer kb naar kb_old
+	memcpy(&kb_old, kb, sizeof(kb_old));
+
+	// stel alle indices van kb_old in op 0
+	memset(&kb, 0, sizeof(kb));
+
+	for (int col = 0; col < 3; col++) {
+		digitalWrite(kb_cols[col], HIGH);
+		delay(10);
+
+		for (int row = 0; row < 4; row++) {
+			Serial.print("checking pin ");
+			Serial.print(kb_cols[col], DEC);
+			Serial.print(" -> ");
+			Serial.print(kb_rows[row], DEC);
+			Serial.print(" ...\n");
+
+			kb[3 * col + row] = digitalRead(kb_rows[row]);
+			delay(10);
+		}
+
+		digitalWrite(kb_cols[col], LOW);
+		delay(10);
+	}
+}
+
+void debug_print_arr(unsigned char x[12]) {
+	Serial.print("[");
+	for(int i = 0; i < 12; i++) {
+		Serial.print(x[i], DEC);
+		if (i != 11) Serial.print(", ");
+	}
+	Serial.print("]\n");
+}
+
+void wrong_code_routine() {
+	//TODO: buzz;
+	digitalWrite(PINOUT_LED_R, HIGH);
+
+	delay(1e3); // shorthand voor 1000
+
+	digitalWrite(PINOUT_LED_R, LOW);
+}
+
+void unlock_routine() {
+	//TODO: open_solenoid();
+	//TODO: buzz;
+	digitalWrite(PINOUT_LED_G, HIGH);
+
+	delay(2e3);
+
+	digitalWrite(PINOUT_LED_G, LOW);
+}
+
+void kb_onevent(kb_event ev) {
+	if (!ev.down) return;
+
+	switch (ev.key) {
+		// C toets (clear)
+		case 9: {
+			// TODO: kijk of sizeof() werkt voor arrays
+			memset(&code, 0, sizeof(code));
+			codei = 0;
+
+			break;
+		}
+
+		// E toets (enter)
+		case 11: {
+			//TODO: array length
+			int correct_code_len = 3;
+			bool correct = true;
+
+			if (codei != correct_code_len) break;
+			for (int i = 0; i < correct_code_len; i++) {
+				if (correct_code[i] == code[i]) continue;
+
+				// dit voert alleen uit als een van
+				// de getallen in code[] niet gelijk is aan correct_code[]
+				correct = false;
+				break;
+			}
+			
+			// debug
+			Serial.print(correct, DEC);
+
+			// kijk mama geen haakjes
+			if (correct)
+				unlock_routine();
+			else
+				wrong_code_routine();
+
+			break;
+		}
+
+		// Overige toetsen (nummers)
+		default: {
+			// bereken getal op toets
+			// (key + 1 voor alle toetsen behalve 0)
+			int num = ev.key == 10 ? 0 : ev.key + 1;
+
+			// voeg getal toe aan het einde van de code
+			code[codei] = num;
+			codei++;
+
+			//TODO: beep
+		}
+	}
+}
+
+void kb_event_gen() {
+	for(int i = 0; i < 12; i++) {
+		// ga door naar de volgende iteratie
+		// als de toetsen niet veranderd zijn
+		if (kb[i] == kb_old[i]) continue;
+
+		kb_event event = {
+			.key = i,
+			.down = kb[i],
+			.timestamp = millis()
+		};
+
+		kb_onevent(event);
+	}
+}
+
+void loop() {
+	kb_scan();
+	kb_event_gen();
+	debug_print_arr(kb);
+	Serial.print("time ");
+  Serial.print(millis(), DEC);
+  Serial.print("\n");
+	delay(1e3);
+}
-- 
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