Initial commit

11 files changed, 3203 insertions, 0 deletions

diff --git a/det_hele/det_hele.ino b/det_hele/det_hele.ino
new file mode 100644
index 0000000..93ac90f
--- /dev/null
+++ b/det_hele/det_hele.ino
@@ -0,0 +1,333 @@
+#include <HX711.h>
+
+// Controls whether red/green LED is turned on.
+const uint8_t DISPLAY_LOCK_PIN = 12;
+
+// Pins used to interact with SIPO controlling four 7-segment dislays.
+const uint8_t DISPLAY_CLOCK_PIN = 11;
+const uint8_t DISPLAY_DATA_PIN = 10;
+const uint8_t DISPLAY_STROBE_PIN = 9;
+
+// Pin controls weather or not the alarm clock is ringing.
+const uint8_t NOISE_ENABLE_PIN = 8;
+
+// Pins used to interact with weight circuit.
+const uint8_t WEIGHT_DATA_PIN = 7; // Reads data from HX711 (DT)
+const uint8_t WEIGHT_CLOCK_PIN = 6; // Drives HX711 output. (SCK)
+HX711 scale;
+int WEIGHT_SAMPLE_AMOUNT = 5; // amount of samples of each observation.
+int AWARE_TIME = 2000; //amount of miliseconds in the aware state.
+
+// Pins used to interact with rotary dial circuit.
+const uint8_t DIAL_DATA_PIN = 5;  // Reads data from PISO (4021).
+const uint8_t DIAL_CLOCK_PIN = 4; // Drives PISO output.
+const uint8_t DIAL_READY_PIN = 3; // Output from FLIP-FLOP.
+const uint8_t DIAL_RESET_PIN = 2; // Reset pin on FLIP-FLOP.
+
+// The program is centered around a state machine.
+// TODO: Describe states.
+enum {
+  STATE_UNARMED,
+  STATE_ARMED,
+  STATE_AWARE,
+  STATE_RINGING,
+} state;
+
+unsigned long awareStartTime;
+
+const double MAX_DEVIATION = 200;
+double savedWeight;
+
+typedef uint8_t Passcode[4];
+
+Passcode savedPass;
+
+Passcode currentPass;
+int currentPassIndex = 0;
+
+
+//All the setup functions.
+void unarmedSetup() {
+  Serial.println("Entering UNARMED state");
+  state = STATE_UNARMED;
+  
+  digitalWrite(DISPLAY_LOCK_PIN, LOW);
+}
+
+void armedSetup() {
+  Serial.println("Entering ARMED state");
+
+  digitalWrite(DISPLAY_LOCK_PIN, HIGH);
+
+  // The weight isn't saved as part of armedSetup() because that would allow an attack where the weight is gradually
+  // lowered by alternating between the armed and aware states. If the weight were to be updated every time, an
+  // atacker could lower the weight graduadally by staying within the margin of error on every step.
+  if (state == STATE_UNARMED) {
+    scale.begin(WEIGHT_DATA_PIN, WEIGHT_CLOCK_PIN);
+    scale.tare(); 
+    savedWeight = scale.get_value(WEIGHT_SAMPLE_AMOUNT);
+  }
+
+  state = STATE_ARMED;
+}
+
+void awareSetup() {
+  Serial.println("Entering AWARE state");
+
+  state = STATE_AWARE;
+  awareStartTime = millis();
+}
+
+void ringingSetup() {
+  Serial.println("Entering RINGING state");
+
+  state = STATE_RINGING;
+  digitalWrite(NOISE_ENABLE_PIN, HIGH);
+}
+
+
+//Initial setup function.
+void setup() {
+  Serial.begin(9600);
+
+  pinMode(DISPLAY_LOCK_PIN, OUTPUT);
+
+  pinMode(DISPLAY_CLOCK_PIN, OUTPUT);
+  pinMode(DISPLAY_STROBE_PIN, OUTPUT);
+  pinMode(DISPLAY_DATA_PIN, OUTPUT);
+
+  pinMode(DIAL_DATA_PIN, INPUT);
+  pinMode(DIAL_CLOCK_PIN, OUTPUT);
+  pinMode(DIAL_READY_PIN, INPUT);
+  pinMode(DIAL_RESET_PIN, OUTPUT);
+
+  pinMode(WEIGHT_DATA_PIN, INPUT);
+  pinMode(WEIGHT_CLOCK_PIN, OUTPUT);
+
+  pinMode(NOISE_ENABLE_PIN, OUTPUT);
+
+  // Clear out display ibn case there's old data left in the encoders.
+  clearDisplay();
+
+  // Enter initial state;
+  unarmedSetup();
+}
+
+
+//other functions.
+uint8_t dialRead() {
+  Serial.println("Data ready from rotary dial circuit!!");
+
+  digitalWrite(DIAL_CLOCK_PIN, LOW);
+  uint8_t data = 0;
+  for (int i = 0; i < 8; ++i) {
+    int bit = digitalRead(DIAL_DATA_PIN);
+    data = (data << 1) | bit;
+
+    digitalWrite(DIAL_CLOCK_PIN, HIGH);
+    digitalWrite(DIAL_CLOCK_PIN, LOW);
+  }
+
+  // 0 is encoded as 10 pulses.
+  if (data == 10) {
+    data = 0;
+  }
+
+  //uint8_t data = shiftIn(PISO_DATA_PIN, PISO_CLOCK_PIN, MSBFIRST);
+  Serial.print("Number: ");
+  Serial.print(data, DEC);
+  Serial.print(", ");
+  Serial.println(data, BIN);
+
+  digitalWrite(DIAL_RESET_PIN, LOW);
+  digitalWrite(DIAL_RESET_PIN, HIGH);
+  digitalWrite(DIAL_RESET_PIN, LOW);
+
+  return data;
+}
+
+double weightDeviation() {
+  double currentWeight = scale.get_value(WEIGHT_SAMPLE_AMOUNT);
+  double deviation = fabs(currentWeight - savedWeight);
+  Serial.print("Deviation: ");
+  Serial.println(deviation, 1);
+  return deviation;
+}
+
+
+//All loop functions.
+void unarmedLoop() {
+  if (digitalRead(DIAL_READY_PIN)) {
+    currentPass[currentPassIndex] = dialRead();
+
+    displayDigitAt(currentPass[currentPassIndex], currentPassIndex);
+
+    if (currentPassIndex == 3) {
+      memcpy(savedPass, currentPass, sizeof(savedPass));
+
+      delay(1000);
+      clearDisplay();
+
+      armedSetup();
+      currentPassIndex = 0;
+    } else {
+      currentPassIndex += 1;
+    }
+  }
+}
+
+void displayDigitAt(uint8_t digit, uint8_t i) {
+  const uint8_t ALL_LATCHED = 0xF0;
+
+  uint8_t bits = ALL_LATCHED - (16 << i) + digit;
+  digitalWrite(DISPLAY_STROBE_PIN, LOW);
+  shiftOut(DISPLAY_DATA_PIN, DISPLAY_CLOCK_PIN, MSBFIRST, bits);
+  digitalWrite(DISPLAY_STROBE_PIN, HIGH);
+
+  bits = ALL_LATCHED + digit;
+  digitalWrite(DISPLAY_STROBE_PIN, LOW);
+  shiftOut(DISPLAY_DATA_PIN, DISPLAY_CLOCK_PIN, MSBFIRST, bits);
+  digitalWrite(DISPLAY_STROBE_PIN, HIGH);
+}
+
+void displayPasscode(Passcode p) {
+  for (int i = 0; i <= 3; ++i) {
+    displayDigitAt(p[i],  i);
+  }
+}
+
+void displayNumber(int value) {
+  if (value > 9999) {
+    value = 9999;
+  } else if (value < 0) {
+    value = 0;
+  }
+
+  for (int i = 3; i >= 0; --i) {
+    uint8_t digit = value % 10;
+    value /= 10;
+    displayDigitAt(digit, i);
+  }
+}
+
+void clearDisplay() {
+  for (int i = 0; i <= 3; ++i) {
+    displayDigitAt(10, i);
+  }
+}
+
+bool handlePasscode() {
+  if (digitalRead(DIAL_READY_PIN)) {
+    currentPass[currentPassIndex] = dialRead();
+    
+    displayDigitAt(currentPass[currentPassIndex], currentPassIndex);
+
+    if (currentPassIndex == 3) {
+      currentPassIndex = 0;
+
+      bool validPass = memcmp(savedPass, currentPass, sizeof(savedPass)) == 0;
+      if (validPass) {
+        // Very cool victory animation.
+        delay(300);
+        for (int i = 0; i < 2; ++i) {
+          clearDisplay();
+          delay(200);
+          for (int j = 0; j <= 3; ++j) {
+            delay(100);
+            displayDigitAt(currentPass[j],  j);
+          }
+          delay(300);
+        }
+        clearDisplay();
+
+        return true;
+      } else {
+        // blink passcode
+        const unsigned long wait = 100;
+        for (int i = 0; i < 4; ++i) {
+          delay(wait);
+          clearDisplay();
+          delay(wait);
+          displayPasscode(currentPass);
+        }
+        delay(wait);
+        clearDisplay();
+
+        return false;
+      }
+    } else {
+      currentPassIndex += 1;
+      return false;
+    }
+  }
+
+  return false;
+}
+
+void armedLoop() {
+  if (handlePasscode()) {
+    unarmedSetup();
+  }
+
+  double deviation = weightDeviation();
+  if (deviation > MAX_DEVIATION) {
+    awareSetup();
+  }
+}
+
+void awareLoop() {
+  if (handlePasscode()) {
+    unarmedSetup();
+  }
+
+  double deviation = weightDeviation();
+  if (deviation < MAX_DEVIATION) {
+    armedSetup();
+    return;
+  }
+
+  int remainingTime = AWARE_TIME - (millis() - awareStartTime);
+  Serial.print("Remaining time:");
+  Serial.println(remainingTime);
+  if (remainingTime <= 0) {
+    ringingSetup();
+  }
+}
+
+// FIXME: What happens if user starts entering password while in aware state and ringing state only sees last two digits?
+
+void ringingLoop() {
+  if (handlePasscode()) {
+    digitalWrite(NOISE_ENABLE_PIN, LOW);
+    unarmedSetup();
+  }
+
+  // FIXME: SHouldn't be able to do this for non-testing purposes.
+  double deviation = weightDeviation();
+  Serial.println(deviation, 1);
+  if (deviation < MAX_DEVIATION) {
+    digitalWrite(NOISE_ENABLE_PIN, LOW);
+    armedSetup();
+  }
+}
+
+//initial loop function, wich contains the switch (state machine).
+void loop() {
+  switch (state) {
+    case STATE_UNARMED:
+      unarmedLoop();
+      break;
+    case STATE_ARMED:
+      armedLoop();
+      break;
+    case STATE_AWARE:
+      awareLoop();
+      break;
+    case STATE_RINGING:
+      ringingLoop();
+      break;
+    default:
+      Serial.println("warning: unhandled state");
+      break;
+  }
+}
\ No newline at end of file
diff --git a/display_driver/display_driver.ino b/display_driver/display_driver.ino
new file mode 100644
index 0000000..dd95d18
--- /dev/null
+++ b/display_driver/display_driver.ino
@@ -0,0 +1,42 @@
+const uint8_t sipo_strobe_pin = 6;
+
+const uint8_t sipo_data_pin = 7;
+
+const uint8_t sipo_clock_pin = 8;
+
+void setup() {
+  Serial.begin(9600);
+
+  pinMode(sipo_strobe_pin, OUTPUT);
+  pinMode(sipo_data_pin, OUTPUT);
+  pinMode(sipo_clock_pin, OUTPUT);
+}
+
+void loop() {
+  for (int i = 0; i < 9999; ++i) {
+    showNumber(i);
+    delay(1000);
+  }
+}
+
+void showNumber(int value) {
+  if (value > 9999) {
+    Serial.println("warning: truncating value");
+    value = 9999;
+  }
+
+  for (int i = 3; i >= 0; --i) {
+    uint8_t digit = value % 10;
+    value /= 10;
+
+    const uint8_t ALL_LATCHED = 0xF0;
+    shiftToSipo(ALL_LATCHED - (16 << i) + digit);
+    shiftToSipo(ALL_LATCHED + digit);
+  }
+}
+
+void shiftToSipo(uint8_t bits) {
+  digitalWrite(sipo_strobe_pin, LOW);
+  shiftOut(sipo_data_pin, sipo_clock_pin, MSBFIRST, bits);
+  digitalWrite(sipo_strobe_pin, HIGH);  
+}
\ No newline at end of file
diff --git a/skema.png b/skema.png
new file mode 100644
index 0000000..1aaef74
--- /dev/null
+++ b/skema.png
diff --git a/sketch_mar5a/sketch_mar5a.ino b/sketch_mar5a/sketch_mar5a.ino
new file mode 100644
index 0000000..11de40e
--- /dev/null
+++ b/sketch_mar5a/sketch_mar5a.ino
@@ -0,0 +1,46 @@
+// This pin is used to read data from the shift register (4021).
+const uint8_t PISO_DATA_PIN = 5;
+
+// This pin should be connected to the clock pin used to advance output in the shift regitster (4021).
+const uint8_t PISO_CLOCK_PIN = 4;
+
+// This pin should be connected to the data out of the flip-flop (4013).
+const uint8_t DATA_READY_PIN = 3;
+
+// This pin is used to reset the state of the rotary dial board.
+// It should be connected to the reset pin of the flip-flop (4013) and counter (4520).
+const uint8_t RESET_PIN = 2;
+
+void setup() {
+  Serial.begin(9600);
+  pinMode(PISO_DATA_PIN, INPUT);
+  pinMode(PISO_CLOCK_PIN, OUTPUT);
+  pinMode(DATA_READY_PIN, INPUT);
+  pinMode(RESET_PIN, OUTPUT);
+}
+
+void loop() {
+  if (digitalRead(DATA_READY_PIN)) {
+    Serial.println("Data ready from rotary dial circuit!!");
+
+    digitalWrite(PISO_CLOCK_PIN, LOW);
+    uint8_t data = 0;
+    for (int i = 0; i < 8; ++i) {
+      int bit = digitalRead(PISO_DATA_PIN);
+      data = (data << 1) | bit;
+
+      digitalWrite(PISO_CLOCK_PIN, HIGH);
+      digitalWrite(PISO_CLOCK_PIN, LOW);
+    }
+
+    //uint8_t data = shiftIn(PISO_DATA_PIN, PISO_CLOCK_PIN, MSBFIRST);
+    Serial.print("Number: ");
+    Serial.print(data, DEC);
+    Serial.print(", ");
+    Serial.println(data, BIN);
+
+    digitalWrite(RESET_PIN, LOW);
+    digitalWrite(RESET_PIN, HIGH);
+    digitalWrite(RESET_PIN, LOW);
+  }
+}
diff --git a/telefonfis/telefonfis-backups/telefonfis-2024-03-05_172859.zip b/telefonfis/telefonfis-backups/telefonfis-2024-03-05_172859.zip
new file mode 100644
index 0000000..21c969f
--- /dev/null
+++ b/telefonfis/telefonfis-backups/telefonfis-2024-03-05_172859.zip
diff --git a/telefonfis/telefonfis-backups/telefonfis-2024-03-05_180250.zip b/telefonfis/telefonfis-backups/telefonfis-2024-03-05_180250.zip
new file mode 100644
index 0000000..21c969f
--- /dev/null
+++ b/telefonfis/telefonfis-backups/telefonfis-2024-03-05_180250.zip
diff --git a/telefonfis/telefonfis-backups/telefonfis-2024-03-12_162647.zip b/telefonfis/telefonfis-backups/telefonfis-2024-03-12_162647.zip
new file mode 100644
index 0000000..21c969f
--- /dev/null
+++ b/telefonfis/telefonfis-backups/telefonfis-2024-03-12_162647.zip
diff --git a/telefonfis/telefonfis.kicad_pcb b/telefonfis/telefonfis.kicad_pcb
new file mode 100644
index 0000000..ef218ba
--- /dev/null
+++ b/telefonfis/telefonfis.kicad_pcb
@@ -0,0 +1,2 @@
+(kicad_pcb (version 20240108) (generator "pcbnew") (generator_version "8.0")
+)
\ No newline at end of file
diff --git a/telefonfis/telefonfis.kicad_prl b/telefonfis/telefonfis.kicad_prl
new file mode 100644
index 0000000..9a3fffd
--- /dev/null
+++ b/telefonfis/telefonfis.kicad_prl
@@ -0,0 +1,83 @@
+{
+  "board": {
+    "active_layer": 0,
+    "active_layer_preset": "",
+    "auto_track_width": true,
+    "hidden_netclasses": [],
+    "hidden_nets": [],
+    "high_contrast_mode": 0,
+    "net_color_mode": 1,
+    "opacity": {
+      "images": 0.6,
+      "pads": 1.0,
+      "tracks": 1.0,
+      "vias": 1.0,
+      "zones": 0.6
+    },
+    "selection_filter": {
+      "dimensions": true,
+      "footprints": true,
+      "graphics": true,
+      "keepouts": true,
+      "lockedItems": false,
+      "otherItems": true,
+      "pads": true,
+      "text": true,
+      "tracks": true,
+      "vias": true,
+      "zones": true
+    },
+    "visible_items": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      8,
+      9,
+      10,
+      11,
+      12,
+      13,
+      15,
+      16,
+      17,
+      18,
+      19,
+      20,
+      21,
+      22,
+      23,
+      24,
+      25,
+      26,
+      27,
+      28,
+      29,
+      30,
+      32,
+      33,
+      34,
+      35,
+      36,
+      39,
+      40
+    ],
+    "visible_layers": "fffffff_ffffffff",
+    "zone_display_mode": 0
+  },
+  "git": {
+    "repo_password": "",
+    "repo_type": "",
+    "repo_username": "",
+    "ssh_key": ""
+  },
+  "meta": {
+    "filename": "telefonfis.kicad_prl",
+    "version": 3
+  },
+  "project": {
+    "files": []
+  }
+}
diff --git a/telefonfis/telefonfis.kicad_pro b/telefonfis/telefonfis.kicad_pro
new file mode 100644
index 0000000..122e808
--- /dev/null
+++ b/telefonfis/telefonfis.kicad_pro
@@ -0,0 +1,391 @@
+{
+  "board": {
+    "3dviewports": [],
+    "design_settings": {
+      "defaults": {},
+      "diff_pair_dimensions": [],
+      "drc_exclusions": [],
+      "rules": {},
+      "track_widths": [],
+      "via_dimensions": []
+    },
+    "ipc2581": {
+      "dist": "",
+      "distpn": "",
+      "internal_id": "",
+      "mfg": "",
+      "mpn": ""
+    },
+    "layer_presets": [],
+    "viewports": []
+  },
+  "boards": [],
+  "cvpcb": {
+    "equivalence_files": []
+  },
+  "erc": {
+    "erc_exclusions": [],
+    "meta": {
+      "version": 0
+    },
+    "pin_map": [
+      [
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        1,
+        0,
+        0,
+        0,
+        0,
+        2
+      ],
+      [
+        0,
+        2,
+        0,
+        1,
+        0,
+        0,
+        1,
+        0,
+        2,
+        2,
+        2,
+        2
+      ],
+      [
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        1,
+        0,
+        1,
+        0,
+        1,
+        2
+      ],
+      [
+        0,
+        1,
+        0,
+        0,
+        0,
+        0,
+        1,
+        1,
+        2,
+        1,
+        1,
+        2
+      ],
+      [
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        1,
+        0,
+        0,
+        0,
+        0,
+        2
+      ],
+      [
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        2
+      ],
+      [
+        1,
+        1,
+        1,
+        1,
+        1,
+        0,
+        1,
+        1,
+        1,
+        1,
+        1,
+        2
+      ],
+      [
+        0,
+        0,
+        0,
+        1,
+        0,
+        0,
+        1,
+        0,
+        0,
+        0,
+        0,
+        2
+      ],
+      [
+        0,
+        2,
+        1,
+        2,
+        0,
+        0,
+        1,
+        0,
+        2,
+        2,
+        2,
+        2
+      ],
+      [
+        0,
+        2,
+        0,
+        1,
+        0,
+        0,
+        1,
+        0,
+        2,
+        0,
+        0,
+        2
+      ],
+      [
+        0,
+        2,
+        1,
+        1,
+        0,
+        0,
+        1,
+        0,
+        2,
+        0,
+        0,
+        2
+      ],
+      [
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2
+      ]
+    ],
+    "rule_severities": {
+      "bus_definition_conflict": "error",
+      "bus_entry_needed": "error",
+      "bus_to_bus_conflict": "error",
+      "bus_to_net_conflict": "error",
+      "conflicting_netclasses": "error",
+      "different_unit_footprint": "error",
+      "different_unit_net": "error",
+      "duplicate_reference": "error",
+      "duplicate_sheet_names": "error",
+      "endpoint_off_grid": "warning",
+      "extra_units": "error",
+      "global_label_dangling": "warning",
+      "hier_label_mismatch": "error",
+      "label_dangling": "error",
+      "lib_symbol_issues": "warning",
+      "missing_bidi_pin": "warning",
+      "missing_input_pin": "warning",
+      "missing_power_pin": "error",
+      "missing_unit": "warning",
+      "multiple_net_names": "warning",
+      "net_not_bus_member": "warning",
+      "no_connect_connected": "warning",
+      "no_connect_dangling": "warning",
+      "pin_not_connected": "error",
+      "pin_not_driven": "error",
+      "pin_to_pin": "warning",
+      "power_pin_not_driven": "error",
+      "similar_labels": "warning",
+      "simulation_model_issue": "ignore",
+      "unannotated": "error",
+      "unit_value_mismatch": "error",
+      "unresolved_variable": "error",
+      "wire_dangling": "error"
+    }
+  },
+  "libraries": {
+    "pinned_footprint_libs": [],
+    "pinned_symbol_libs": []
+  },
+  "meta": {
+    "filename": "telefonfis.kicad_pro",
+    "version": 1
+  },
+  "net_settings": {
+    "classes": [
+      {
+        "bus_width": 12,
+        "clearance": 0.2,
+        "diff_pair_gap": 0.25,
+        "diff_pair_via_gap": 0.25,
+        "diff_pair_width": 0.2,
+        "line_style": 0,
+        "microvia_diameter": 0.3,
+        "microvia_drill": 0.1,
+        "name": "Default",
+        "pcb_color": "rgba(0, 0, 0, 0.000)",
+        "schematic_color": "rgba(0, 0, 0, 0.000)",
+        "track_width": 0.2,
+        "via_diameter": 0.6,
+        "via_drill": 0.3,
+        "wire_width": 6
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new file mode 100644
index 0000000..ce99f66
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\ No newline at end of file