void loop() switch(currentState) case STARTUP: // Send 5 beacon bursts, wait for ACK if(sendBeaconAndWaitAck()) currentState = CONNECTED; else delay(1000); // Retry startup
// Compute RSSI (if using a module that reports it) uint8_t rssi = gateway.getRSSI(); // Requires custom function float distanceEstimate = estimateDistance(rssi); Script RF24- alcance de arranque- alcance de GK...
void setup() Serial.begin(115200); radio.begin(); void loop() switch(currentState) case STARTUP: // Send 5
void sendKeepAlive(Packet *p) gateway.stopListening(); gateway.openWritingPipe(p->id); // Per-device pipe char keepAliveCmd[] = "GK_ALIVE"; for(int i=0; i<5; i++) // Burst keep-alive gateway.write(&keepAliveCmd, sizeof(keepAliveCmd)); delay(20); void setup() Serial.begin(115200)
void loop() // Normal operation if(radio.available()) char rxBuf[33]; radio.read(&rxBuf, sizeof(rxBuf)); Serial.println(rxBuf);
// If RSSI is weak (> -80dBm), send a keep-alive command if(rssi > 80) // Stronger negative value means weaker signal sendKeepAlive(&p);
case CONNECTED: currentState = GK_KEEPALIVE; break; case GK_KEEPALIVE: if(millis() - lastGKPing > GK_INTERVAL) if(sendKeepAliveAndCheckRSSI()) lastGKPing = millis(); // Dynamically adjust data rate if RSSI is strong if(getRSSI() < 60) radio.setDataRate(RF24_1MBPS); // Faster else radio.setDataRate(RF24_250KBPS); // Longer range else currentState = STARTUP; // Lost connection break; case SLEEP: radio.powerDown(); delay(5000); radio.powerUp(); currentState = STARTUP; break;