I transmit data from arduino idle to dwin display(dmg48270c043_04wt4) ,but i didnt transmit any data to dwin display, why? explain me and correct code

[yakhrevan_s]

#include <SoftwareSerial.h>

#define NUM_SENSORS 6
#define THRESHOLD_DISTANCE 30

// Ultrasonic sensor pin assignments
const int trigPins[NUM_SENSORS] = {9, 11, 13, A0, A2, A4};
const int echoPins[NUM_SENSORS] = {10, 12, 4, A1, A3, A5};

// Buzzer and LED pins
#define BUZZER_PIN 5
#define LED_PIN 6

// Setup SoftwareSerial for the DWIN display (RX=2, TX=3)
SoftwareSerial HMI(2, 3);

// Battery percentage variables
uint8_t batteryPercentage = 100;
unsigned long batteryLastUpdateTime = 0;
const unsigned long batteryInterval = 420000; // 7 minutes in milliseconds

// UART Transmission function
void uart_tx(uint16_t address, uint16_t data) {
uint8_t uart_frame[8] = {0x5A, 0xA5, 0x05, 0x82, 0, 0, 0, 0};
uart_frame[4] = (address >> 8) & 0xFF;
uart_frame[5] = address & 0xFF;
uart_frame[6] = (data >> 8) & 0xFF;
uart_frame[7] = data & 0xFF;

HMI.write(uart_frame, 8);

// Toggle LED to indicate data transmission
digitalWrite(LED_PIN, !digitalRead(LED_PIN));

// Debugging
Serial.print("Sent: Addr = 0x");
Serial.print(address, HEX);
Serial.print(", Data = 0x");
Serial.println(data, HEX);
}

// Function to measure distance from ultrasonic sensors
long getDistance(int sensorIndex) {
digitalWrite(trigPins[sensorIndex], LOW);
delayMicroseconds(2);
digitalWrite(trigPins[sensorIndex], HIGH);
delayMicroseconds(10);
digitalWrite(trigPins[sensorIndex], LOW);

long duration = pulseIn(echoPins[sensorIndex], HIGH, 30000);
if (duration == 0) return -1; // No valid signal
long distance = duration * 0.034 / 2;
return distance;
}

void setup() {
Serial.begin(9600);
HMI.begin(115200); // Lower baud rate for stability

for (int i = 0; i < NUM_SENSORS; i++) {
pinMode(trigPins[i], OUTPUT);
pinMode(echoPins[i], INPUT);
}

pinMode(BUZZER_PIN, OUTPUT);
pinMode(LED_PIN, OUTPUT);
pinMode(2, INPUT); // RX for SoftwareSerial
pinMode(3, OUTPUT); // TX for SoftwareSerial

Serial.println("System Initialized");
}

void loop() {
bool anyTriggered = false;

// Sensor addresses for transmission
uint16_t sensorAddresses[NUM_SENSORS] = {0x2000, 0x3000, 0x4000, 0x5000, 0x6000, 0x7000};

// Process each sensor
for (int i = 0; i < NUM_SENSORS; i++) {
long distance = getDistance(i);
Serial.print("Sensor ");
Serial.print(i + 1);
Serial.print(": ");

if (distance == -1) {
  Serial.println("No Reading");
  continue;
} else {
  Serial.print(distance);
  Serial.println(" cm");
}

uint16_t sensorData = (distance > 0 && distance < THRESHOLD_DISTANCE) ? 1 : 0;
if (sensorData == 1) anyTriggered = true;
uart_tx(sensorAddresses[i], sensorData);
delay(100);

}

// Activate buzzer if any sensor is triggered
digitalWrite(BUZZER_PIN, anyTriggered ? HIGH : LOW);

// Update battery percentage every 7 minutes
unsigned long currentMillis = millis();
if (currentMillis - batteryLastUpdateTime >= batteryInterval) {
batteryLastUpdateTime = currentMillis;
if (batteryPercentage > 0) {
batteryPercentage--;
} else {
batteryPercentage = 100; // Reset after reaching 0
}
}

// Transmit battery data
uart_tx(0x1000, batteryPercentage);
Serial.print("Battery: ");
Serial.print(batteryPercentage);
Serial.println("%");

delay(500);
}
serial monitor output: Sent: Addr = 0x1000, Data = 0x64
Battery: 100%
Sensor 1: 256 cm
Sent: Addr = 0x2000, Data = 0x0
Sensor 2: No Reading
Sensor 3: No Reading
Sensor 4: No Reading
Sensor 5: No Reading
Sensor 6: No Reading

[pert]

I moved your topic to an appropriate forum category @yakhrevan_s .

In the future, please take some time to pick the forum category that best suits the subject of your topic. There is an "About the _____ category" topic at the top of each category that explains its purpose.

This is an important part of responsible forum usage, as explained in the "How to get the best out of this forum" guide. The guide contains a lot of other useful information. Please read it.

Thanks in advance for your cooperation.