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Fixed conflicting pin assignment and improved code maintainability #24

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2a20ecb
Fixed conflicting pin assignments
beeve Jul 25, 2025
25a62e0
Changed code to fixed pin assignments and made code cleaner and align…
beeve Jul 25, 2025
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4 changes: 2 additions & 2 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -34,8 +34,8 @@ The following libraries must be installed in Arduino IDE:

| ESP8266 Pin | OLED Pin | Description |
|------------|---------|-------------|
| D5 (GPIO14)| SDA | Serial data line |
| D6 (GPIO12)| SCL | Serial clock line |
| D1 (GPIO5)| SDA | Serial data line |
| D3 (GPIO0)| SCL | Serial clock line |
| 3.3V | VCC | Power supply |
| GND | GND | Ground |

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216 changes: 113 additions & 103 deletions jammer/jammer.ino
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Original file line number Diff line number Diff line change
Expand Up @@ -6,12 +6,17 @@
#include <string>
#include "images.h"

//Im using nodemcu esp8266
RF24 radio(2, 4);//CE, CSN
byte i = 45;
// NRF24L01+ CE -> D4 (GPIO2), CSN -> D2 (GPIO4)
RF24 radio(2, 4); // CE, CSN

// Button on GPIO3 (RX)
ezButton button(3);

// OLED on I2C (SDA: GPIO5 / D1, SCL: GPIO0 / D3)
Adafruit_SSD1306 display = Adafruit_SSD1306(128, 64, &Wire);

byte i = 45;

const int wifiFrequencies[] = {
2412,
2417,
Expand All @@ -26,128 +31,133 @@ const int wifiFrequencies[] = {
2462
};


void displayMessage(const char* line, uint8_t x = 55, uint8_t y = 22, const unsigned char* bitmap = helpy_menu_image) {
//Radio'yu kapatıp SPI'yi bırak
radio.powerDown();
SPI.end();
delay(10);

//Bitmapi yazdirma
display.clearDisplay();
if (bitmap != nullptr) {
display.drawBitmap(0, 0, bitmap, 128, 64, WHITE);
}
display.setTextSize(1);
String text = String(line);
int16_t cursor_y = y;
int16_t maxWidth = 128 - x;
while (text.length() > 0) {
int16_t charCount = 0;
int16_t lineWidth = 0;
while (charCount < text.length() && lineWidth < maxWidth) {
charCount++;
lineWidth = 6 * charCount;
radio.powerDown();
SPI.end();
delay(10);

display.clearDisplay();
if (bitmap != nullptr) {
display.drawBitmap(0, 0, bitmap, 128, 64, WHITE);
}
if (charCount < text.length()) {
int16_t lastSpace = text.substring(0, charCount).lastIndexOf(' ');
if (lastSpace > 0) {
charCount = lastSpace + 1;
}

display.setTextSize(1);
String text = String(line);
int16_t cursor_y = y;
int16_t maxWidth = 128 - x;
while (text.length() > 0) {
int16_t charCount = 0;
int16_t lineWidth = 0;
while (charCount < text.length() && lineWidth < maxWidth) {
charCount++;
lineWidth = 6 * charCount;
}
if (charCount < text.length()) {
int16_t lastSpace = text.substring(0, charCount).lastIndexOf(' ');
if (lastSpace > 0) {
charCount = lastSpace + 1;
}
}
display.setCursor(x, cursor_y);
display.println(text.substring(0, charCount));
text = text.substring(charCount);
cursor_y += 10;
if (cursor_y > 64) break;
}
display.setCursor(x, cursor_y);
display.println(text.substring(0, charCount));
text = text.substring(charCount);
cursor_y += 10;
if (cursor_y > 64) break;
}
display.display();

//Radyo işlemlerine devam etmek için SPI'yi yeniden başlat ve radio'yu aç
SPI.begin();
radio.powerUp();
delay(5);
// Jamming modunu yeniden başlat
radio.startConstCarrier(RF24_PA_MAX, i);
display.display();

SPI.begin();
radio.powerUp();
delay(5);
radio.startConstCarrier(RF24_PA_MAX, i);
}

void addvertising() {
// Addvertising
for (size_t i = 0; i < 3; i++) {
displayMessage("", 60, 22, helpy_big_image);
delay(310);
displayMessage("", 60, 22, nullptr);
delay(300);
}
displayMessage("Jammer got up. Click the button and discover all modes!", 65, 6);
void advertising() {
for (size_t i = 0; i < 3; i++) {
displayMessage("", 60, 22, helpy_big_image);
delay(310);
displayMessage("", 60, 22, nullptr);
delay(300);
}
displayMessage("Jammer got up. Click the button and discover all modes!", 65, 6);
}

void setup() {
Serial.begin(9600);
button.setDebounceTime(100);
pinMode(3, INPUT_PULLUP);
Wire.begin(14, 12); //SDA, SCL
if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
Serial.println(F("OLED screen not found!"));
exit(0);
}
display.clearDisplay();
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(0, 0);
display.print(feragatname);
display.display();
delay(900);
if (radio.begin()) {
delay(200);
radio.setAutoAck(false);
radio.stopListening();
radio.setRetries(0, 0);
radio.setPayloadSize(5);
radio.setAddressWidth(3);
radio.setPALevel(RF24_PA_MAX);
radio.setDataRate(RF24_2MBPS);
radio.setCRCLength(RF24_CRC_DISABLED);
radio.printPrettyDetails();
radio.startConstCarrier(RF24_PA_MAX, i);
addvertising();
} else {
Serial.println("BLE Jammer couldn't be started!");
displayMessage("Jammer Error!");
}
Serial.begin(9600);
button.setDebounceTime(100);
pinMode(3, INPUT_PULLUP); // Button on GPIO3 (RX)

Wire.begin(5, 0); // SDA = GPIO5 (D1), SCL = GPIO0 (D3)

if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
Serial.println(F("OLED screen not found!"));
exit(0);
}

display.clearDisplay();
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(0, 0);
display.print(feragatname); // Legal disclaimer on startup defined in images.h
display.display();
delay(900);

if (radio.begin()) {
delay(200);
radio.setAutoAck(false);
radio.stopListening();
radio.setRetries(0, 0);
radio.setPayloadSize(5);
radio.setAddressWidth(3);
radio.setPALevel(RF24_PA_MAX);
radio.setDataRate(RF24_2MBPS);
radio.setCRCLength(RF24_CRC_DISABLED);
radio.printPrettyDetails();
radio.startConstCarrier(RF24_PA_MAX, i);
advertising();
}
else {
Serial.println("BLE Jammer couldn't be started!");
displayMessage("Jammer Error!");
}
}

void fullAttack() {
for (size_t i = 0; i < 80; i++) {
radio.setChannel(i);
}
for (size_t i = 0; i < 80; i++) {
radio.setChannel(i);
}
}

void wifiAttack() {
for (int i = 0; i < sizeof(wifiFrequencies) / sizeof(wifiFrequencies[0]); i++) {
radio.setChannel(wifiFrequencies[i] - 2400);
}
for (int i = 0; i < sizeof(wifiFrequencies) / sizeof(wifiFrequencies[0]); i++) {
radio.setChannel(wifiFrequencies[i] - 2400);
}
}

const char* modes[] = {
"BLE & All 2.4 GHz",
"Just Wi-Fi",
"Waiting Idly :("
};

uint8_t attack_type = 2;

void loop() {
button.loop();
if (button.isPressed()) {
attack_type = (attack_type + 1) % 3;
displayMessage((String(modes[attack_type])+" Mode").c_str());
}
switch (attack_type) {
button.loop();
if (button.isPressed()) {
attack_type = (attack_type + 1) % 3;
displayMessage((String(modes[attack_type]) + " Mode").c_str());
}

switch (attack_type) {
case 0:
fullAttack();
break;
fullAttack();
break;
case 1:
wifiAttack();
break;
wifiAttack();
break;
case 2:
break;
}
}
// Do nothing
break;
}
}