add arduino code

arduino/master_writer_copy_20250415202949.ino

@@ -0,0 +1,88 @@
+#include <Wire.h>
+
+#define MIRQ 2
+
+unsigned long timing;
+
+void conf() {
+  TWBR = 0xff;
+  TWSR = 0x01;
+  //TWCR &= ~(1<<TWEA);
+}
+
+void sendStringToDisplay(char* str, bool dotPointEnable = false) {
+  Wire.beginTransmission(0x23);
+  //byte[] packet = { 0x0C, 0x90, 0x7E, 0x71, 0x01, }
+  Wire.write(0x0F);
+  Wire.write(0x90);
+  Wire.write(0x7F); 
+  Wire.write(0xFF); //19 traffic on ? 55 ?
+  Wire.write(0xFF);
+  Wire.write(0xFF); //7F traffic on ?    //FD ? 
+  Wire.write(0x71); // PRESET
+  Wire.write(0x01); // DOT POINT //A5 ?
+  Wire.write(str[0]);
+  Wire.write(str[1]);
+  Wire.write(str[2]);
+  Wire.write(str[3]);
+  Wire.write(str[4]);
+  Wire.write(str[5]);
+  Wire.write(str[6]);
+  Wire.write(str[7]);
+}
+
+/*
+0x19  0001 1001
+0x55  0101 0101
+*/
+
+void setup() {
+  Serial.begin(9600);
+  Wire.begin();
+  conf();
+  //Wire.setClock(10000);
+  pinMode(LED_BUILTIN, OUTPUT);
+  pinMode(MIRQ, INPUT_PULLUP);
+}
+
+void up() {
+  pinMode(MIRQ, INPUT_PULLUP);
+}
+
+void down() {
+  pinMode(MIRQ, OUTPUT);
+  digitalWrite(MIRQ, LOW);
+}
+
+bool initialized = false;
+
+void loop() {
+  if (millis() - timing > 2000) {  // Обновление данных на дисплее
+    Serial.println("WRITING");
+    while (!digitalRead(MIRQ))
+      ;
+    if (digitalRead(MIRQ)) {
+      delay(1);
+      down();
+      Wire.beginTransmission(0x23);
+      conf();
+      Wire.write(0x01);
+      Wire.write(0x11);
+      Wire.endTransmission();
+      up();
+      delay(1);
+    }
+
+    while (!digitalRead(MIRQ))
+      ;
+    if (digitalRead(MIRQ)) {
+      down();
+      sendStringToDisplay("HELLO", true);
+      Wire.endTransmission();
+      up();
+      delay(1);
+    }
+    digitalWrite(LED_BUILTIN, !digitalRead(LED_BUILTIN));
+    timing = millis();
+  }
+}

arduino/sketch_apr9c.ino

@@ -0,0 +1,120 @@
+#include <SoftwareSerial.h>
+#include <Wire.h>
+
+#define MRQ_PIN 1
+
+SoftwareSerial serial(3,4);
+
+enum State { IDLE,
+             ACTIVE,
+             PAUSE };
+
+byte HANDSHAKE[] = { 0x01, 0x00 };
+byte PONG[] = { 0x01, 0x01 };
+byte BUTTON[] = { 0x04, 0x82, 0x91, 0x00, 0x00 };
+
+State currentState = IDLE;
+unsigned long lastChange = 0;
+
+bool handshakeComplete = false;
+bool processButton = false;
+
+byte readBuffer[16];
+bool newBuffer = false;
+
+void up() {
+  pinMode(MRQ_PIN, INPUT_PULLUP);
+}
+
+void down() {
+  pinMode(MRQ_PIN, OUTPUT);
+  digitalWrite(MRQ_PIN, LOW);
+}
+
+void onRequest() {
+  while (digitalRead(MRQ_PIN))
+    ;
+  if (!handshakeComplete) {
+    Wire.write(HANDSHAKE, sizeof HANDSHAKE);
+  } else {
+    if (processButton) {
+      processButton = false;
+      Wire.write(BUTTON, sizeof BUTTON);
+    } else {
+      Wire.write(PONG, sizeof PONG);
+    }
+  }
+}
+
+void onReceive(int bytes) {
+  //Serial.println(bytes);
+  byte first_byte = Wire.read();
+  byte second_byte = Wire.read();
+  if (first_byte == 0x01 && second_byte == 0x11) {
+    if (!handshakeComplete) {
+      handshakeComplete = true;
+      //currentState = PAUSE;
+    }
+  } else if (first_byte == 0x01 && second_byte == 0x10) {
+    handshakeComplete = false;
+    //currentState = ACTIVE;
+  } else {
+    for (int i = 0; i < 16; i++) readBuffer[i] = 0x0;
+    readBuffer[0] = first_byte;
+    readBuffer[1] = second_byte;
+    for (int i = 0; i < bytes - 2; i++) {
+      readBuffer[i + 2] = Wire.read();
+    }
+    newBuffer = true;
+  }
+}
+
+void setup() {
+  serial.begin(9600);
+
+  Wire.setClock(10000);
+  Wire.begin(0x23);
+  Wire.onRequest(onRequest);
+  Wire.onReceive(onReceive);
+
+  pinMode(MRQ_PIN, INPUT_PULLUP);
+}
+
+void loop() {
+  if (serial.available()) {
+    BUTTON[3] = serial.read();
+    BUTTON[4] = serial.read();
+    processButton = true;
+    currentState = ACTIVE;
+  }
+
+  if (newBuffer) {
+    for (int i = 0; i < 16; i++) {
+      serial.write(readBuffer[i]);
+    }
+    newBuffer = false;
+    serial.println();
+  }
+
+  unsigned long now = millis();
+  switch (currentState) {
+    case PAUSE:
+      break;
+    case IDLE:
+      up();
+      if (now - lastChange >= 480) {
+        if (digitalRead(MRQ_PIN)) {
+          lastChange = now;
+          currentState = ACTIVE;
+        }
+      }
+      break;
+    case ACTIVE:
+      down();
+      if (now - lastChange >= 30) {
+        lastChange = now;
+        currentState = IDLE;
+      }
+      break;
+  }
+}