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m5sec_packet_monitor.ino
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m5sec_packet_monitor.ino
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//パケットモニター
double getMultiplicator() {
uint32_t maxVal = 1;
for (int i = 0; i < MAX_X; i++) {
if (pkts[i] > maxVal) maxVal = pkts[i];
}
if (maxVal > MAX_Y) return (double)MAX_Y / (double)maxVal;
else return 1;
}
void setChannel(int newChannel) {
ch = newChannel;
if (ch > MAX_CH || ch < 1) ch = 1;
preferences.begin("packetmonitor32", false);
preferences.putUInt("channel", ch);
preferences.end();
esp_wifi_set_promiscuous(false);
esp_wifi_set_channel(ch, WIFI_SECOND_CHAN_NONE);
esp_wifi_set_promiscuous_rx_cb(&wifi_promiscuous);
esp_wifi_set_promiscuous(true);
}
#ifdef USE_SD
bool setupSD() {
if (!SD_MMC.begin()) {
Serial.println("Card Mount Failed");
return false;
}
uint8_t cardType = SD_MMC.cardType();
if (cardType == CARD_NONE) {
Serial.println("No SD_MMC card attached");
return false;
}
Serial.print("SD_MMC Card Type: ");
if (cardType == CARD_MMC) {
Serial.println("MMC");
} else if (cardType == CARD_SD) {
Serial.println("SDSC");
} else if (cardType == CARD_SDHC) {
Serial.println("SDHC");
} else {
Serial.println("UNKNOWN");
}
uint64_t cardSize = SD_MMC.cardSize() / (1024 * 1024);
Serial.printf("SD_MMC Card Size: %lluMB\n", cardSize);
return true;
}
#endif
void wifi_promiscuous(void* buf, wifi_promiscuous_pkt_type_t type) {
wifi_promiscuous_pkt_t* pkt = (wifi_promiscuous_pkt_t*)buf;
wifi_pkt_rx_ctrl_t ctrl = (wifi_pkt_rx_ctrl_t)pkt->rx_ctrl;
if (type == WIFI_PKT_MGMT && (pkt->payload[0] == 0xA0 || pkt->payload[0] == 0xC0 )) deauths++;
if (type == WIFI_PKT_MISC) return; // wrong packet type
if (ctrl.sig_len > SNAP_LEN) return; // packet too long
uint32_t packetLength = ctrl.sig_len;
if (type == WIFI_PKT_MGMT) packetLength -= 4; // fix for known bug in the IDF https://github.com/espressif/esp-idf/issues/886
//Serial.print(".");
tmpPacketCounter++;
rssiSum += ctrl.rssi;
if (useSD) sdBuffer.addPacket(pkt->payload, packetLength);
}
void draw() {
#ifdef USE_TFT
double multiplicator = getMultiplicator();
int len;
int rssi;
if (pkts[MAX_X - 1] > 0) rssi = rssiSum / (int)pkts[MAX_X - 1];
else rssi = rssiSum;
M5.Lcd.setTextColor(WHITE, BLACK);
M5.Lcd.setTextSize(2);
M5.Lcd.setCursor(0, 10);
M5.Lcd.print(" Ch: ");
M5.Lcd.println(ch);
M5.Lcd.print(" RSSI: ");
M5.Lcd.println(rssi);
M5.Lcd.print(" Pkts: ");
M5.Lcd.println(tmpPacketCounter);
M5.Lcd.print(" Deauths: ");
if (deauths >= 2) {
M5.Lcd.setTextColor(RED);
M5.Lcd.println(deauths);
M5.Lcd.setTextColor(WHITE);
//M5.Speaker.beep();
}else M5.Lcd.println(deauths);
#endif
}
void coreTask( void * p ) {
uint32_t currentTime;
while (true) {
currentTime = millis();
/* bit of spaghetti code, have to clean this up later :D */
#ifdef USE_SD
// check button
if (digitalRead(BUTTON_PIN) == LOW) {
if (buttonEnabled) {
if (!buttonPressed) {
buttonPressed = true;
lastButtonTime = currentTime;
} else if (currentTime - lastButtonTime >= 2000) {
if (useSD) {
useSD = false;
sdBuffer.close(&SD_MMC);
draw();
} else {
if (setupSD())
sdBuffer.open(&SD_MMC);
draw();
}
buttonPressed = false;
buttonEnabled = false;
}
}
} else {
if (m5.BtnB.wasPressed()) {
setChannel(ch + 1);
draw();
}
buttonPressed = false;
buttonEnabled = true;
}
// save buffer to SD
if (useSD)
sdBuffer.save(&SD_MMC);
#endif
// draw Display
if ( currentTime - lastDrawTime > 1000 ) {
lastDrawTime = currentTime;
// Serial.printf("\nFree RAM %u %u\n", heap_caps_get_minimum_free_size(MALLOC_CAP_8BIT), heap_caps_get_minimum_free_size(MALLOC_CAP_32BIT));// for debug purposes
pkts[MAX_X - 1] = tmpPacketCounter;
draw();
Serial.println((String)pkts[MAX_X - 1]);
tmpPacketCounter = 0;
deauths = 0;
rssiSum = 0;
}
// Serial input
if (Serial.available()) {
ch = Serial.readString().toInt();
if (ch < 1 || ch > 14) ch = 1;
setChannel(ch);
Serial.printf("Setting channel %02d\n", ch);
}
}
}