From 0a40daf4fad5c1593c6e1696ac0cab992c799e2e Mon Sep 17 00:00:00 2001
From: krolyxon <me@krolyxon.com>
Date: Mon, 4 May 2026 22:48:07 +0530
Subject: initial commit

---
 firmware/nrf24.cpp | 99 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 firmware/nrf24.cpp

(limited to 'firmware/nrf24.cpp')

diff --git a/firmware/nrf24.cpp b/firmware/nrf24.cpp
new file mode 100644
index 0000000..8c1b4d9
--- /dev/null
+++ b/firmware/nrf24.cpp
@@ -0,0 +1,99 @@
+#include <Arduino.h>
+#include <RF24.h>
+#include "buttons.h"
+#include "nrf24.h"
+#include "display.h"
+#define JAM_DURATION 500
+
+extern SPIClass *RADIO_SPI;
+extern RF24 radio1;
+extern RF24 radio2;
+
+void initNRF(RF24 &radio)
+{
+    radio.begin(RADIO_SPI);
+
+    radio.setAutoAck(false);
+    radio.stopListening();
+
+    radio.setRetries(0, 0);
+    radio.setDataRate(RF24_2MBPS);
+radio.setPALevel(RF24_PA_MAX);
+
+    radio.openWritingPipe(0xE7E7E7E7E7LL);
+}
+
+
+void jamChannels(const char* label, int startCh, int endCh) {
+  byte data1[32], data2[32];
+  for (int i = 0; i < 32; i++) {
+    data1[i] = random(0, 256);
+    data2[i] = random(0, 256);
+  }
+
+  for (int ch = startCh; ch <= endCh; ch++) {
+    // Status screen
+    u8g2.clearBuffer();
+    u8g2.drawStr(0, 10, "Jamming:");
+    u8g2.setCursor(60, 10);
+    u8g2.print(label);
+    u8g2.setCursor(0, 30);
+    u8g2.print("Channel: ");
+    u8g2.print(ch);
+    u8g2.sendBuffer();
+
+    unsigned long startTime = millis();
+    while (millis() - startTime < JAM_DURATION) {
+      radio1.setChannel(ch);
+      radio1.stopListening();
+      radio1.write(data1, sizeof(data1));
+      delayMicroseconds(100);
+
+      radio2.setChannel(ch);
+      radio2.stopListening();
+      radio2.write(data2, sizeof(data2));
+      delayMicroseconds(100);
+
+  }
+}
+}
+
+
+void nrfJammerSweep()
+{
+    static uint8_t ch1 = 0;
+    static uint8_t ch2 = 124;
+
+    uint8_t payload[32] = {0xFF};
+
+    radio1.setChannel(ch1);
+    radio1.writeFast(payload, sizeof(payload));
+
+    radio2.setChannel(ch2);
+    radio2.writeFast(payload, sizeof(payload));
+
+    ch1++;
+    ch2--;
+
+    if (ch1 > 124) ch1 = 0;
+    if (ch2 > 124) ch2 = 124;
+}
+
+void startNRFJammer()
+{
+    initNRF(radio1);
+    initNRF(radio2);
+
+    Serial.println("NRF JAMMER STARTED");
+    // nrfJammerSweep();
+      jamChannels("Bluetooth", 0, 78);
+
+
+    if (btnBack())
+    {
+        Serial.println("Jammer stopped");
+        return;
+    }
+
+    delayMicroseconds(200);
+}
-- 
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