Not getting signal strength of nodes

[gshubham586]

I am using arduino nano and AI-Thinker SX1278 RF RA-02 lora module.

This is my code-

//#include //#include

include

//#include

include

include

include

//#define RH_HAVE_HARDWARE_SPI

define RH_HAVE_SERIAL

define LED 13

define N_NODES 4

uint8_t nodeId; uint8_t routes[N_NODES]; // full routing table for mesh int16_t rssi[N_NODES]; // signal strength info

define RFM95_CS 10

define RFM95_RST 9

define RFM95_INT 2

// Singleton instance of the radio driver RH_RF95 rf95(RFM95_CS,RFM95_INT);

// Class to manage message delivery and receipt, using the driver declared above RHMesh *manager;

// message buffer char buf[RH_MESH_MAX_MESSAGE_LEN];

/int freeMem() { extern int __heap_start, brkval; int v; return (int) &v - (brkval == 0 ? (int) &__heap_start : (int) __brkval); }*/

void setup() { randomSeed(analogRead(A0));

//pinMode(9, OUTPUT); // digitalWrite(9, HIGH);

pinMode(RFM95_RST, OUTPUT); digitalWrite(RFM95_RST, HIGH);

pinMode(LED, OUTPUT); Serial.begin(115200); while (!Serial) ; // Wait for serial port to be available Serial.println("program is going to execute"); //nodeId = EEPROM.read(0); nodeId = 1; if (nodeId > 10) { Serial.print(F("EEPROM nodeId invalid: ")); Serial.println(nodeId); nodeId = 1; } Serial.print(F("initializing node ")); delay(1000); manager = new RHMesh(rf95, nodeId);

digitalWrite(RFM95_RST, LOW); delay(10); digitalWrite(RFM95_RST, HIGH); delay(10);

if (!manager->init()) { //if (!rf95.init()) { Serial.println(F("init failed")); } else { Serial.println("init successful"); } rf95.setTxPower(23, false); rf95.setFrequency(433.0); //rf95.setCADTimeout(500);

//////////////////////////////////////////////////// if (!rf95.setFrequency(433.0)) {

Serial.println("setFrequency failed");

while (1);

} else{ Serial.println("Set frequency successful"); }

///////////////////////////////////////////////////////

// Possible configurations: // Bw125Cr45Sf128 (the chip default) // Bw500Cr45Sf128 // Bw31_25Cr48Sf512 // Bw125Cr48Sf4096

// long range configuration requires for on-air time boolean longRange = false; if (longRange) { RH_RF95::ModemConfig modem_config = { 0x78, // Reg 0x1D: BW=125kHz, Coding=4/8, Header=explicit 0xC4, // Reg 0x1E: Spread=4096chips/symbol, CRC=enable 0x08 // Reg 0x26: LowDataRate=On, Agc=Off. 0x0C is LowDataRate=ON, ACG=ON }; rf95.setModemRegisters(&modem_config); if (!rf95.setModemConfig(RH_RF95::Bw125Cr45Sf128)) { Serial.println(F("set config failed")); } }

Serial.println("RF95 ready");

for(uint8_t n=1;n<=N_NODES;n++) { routes[n-1] = 0; rssi[n-1] = 0; }

}

const __FlashStringHelper* getErrorString(uint8_t error) { switch(error) { case 1: return F("invalid length"); break; case 2: return F("no route"); break; case 3: return F("timeout"); break; case 4: return F("no reply"); break; case 5: return F("unable to deliver"); break; } return F("unknown"); }

void updateRoutingTable() { for(uint8_t n=1;n<=N_NODES;n++) { RHRouter::RoutingTableEntry *route = manager->getRouteTo(n); if (n == nodeId) { routes[n-1] = 255; // self } else { routes[n-1] = route->next_hop; if (routes[n-1] == 0) { // if we have no route to the node, reset the received signal strength rssi[n-1] = 0; } } } }

// Create a JSON string with the routing info to each node void getRouteInfoString(char *p, size_t len) { p[0] = '\0'; strcat(p, "["); for(uint8_t n=1;n<=N_NODES;n++) { strcat(p, "{\"n\":"); sprintf(p+strlen(p), "%d", routes[n-1]); strcat(p, ","); strcat(p, "\"r\":"); sprintf(p+strlen(p), "%d", rssi[n-1]); strcat(p, "}"); if (n<N_NODES) { strcat(p, ","); } } strcat(p, "]"); }

void printNodeInfo(uint8_t node, char *s) { Serial.print(F("node: ")); Serial.print(F("{")); Serial.print(F("\"")); Serial.print(node); Serial.print(F("\"")); Serial.print(F(": ")); Serial.print(s); Serial.println(F("}")); }

void loop() {

for(uint8_t n=1;n<=N_NODES;n++) { if (n == nodeId) continue; // self

updateRoutingTable();
getRouteInfoString(buf, RH_MESH_MAX_MESSAGE_LEN);

Serial.print(F("->"));
Serial.print(n);
Serial.print(F(" :"));
Serial.print(buf);

// send an acknowledged message to the target node
uint8_t error = manager->sendtoWait((uint8_t *)buf, strlen(buf), n);
if (error != RH_ROUTER_ERROR_NONE) {
  Serial.println();
  Serial.print(F(" ! "));
  Serial.println(getErrorString(error));
} else {
  Serial.println(F(" OK"));
  // we received an acknowledgement from the next hop for the node we tried to send to.
  RHRouter::RoutingTableEntry *route = manager->getRouteTo(n);
  if (route->next_hop != 0) {
    rssi[route->next_hop-1] = rf95.lastRssi();
  }
}
if (nodeId == 1) printNodeInfo(nodeId, buf); // debugging

// listen for incoming messages. Wait a random amount of time before we transmit
// again to the next node
unsigned long nextTransmit = millis() + random(3000, 5000);
while (nextTransmit > millis()) {
  int waitTime = nextTransmit - millis();
  uint8_t len = sizeof(buf);
  uint8_t from;
  if (manager->recvfromAckTimeout((uint8_t *)buf, &len, waitTime, &from)) {
    buf[len] = '\0'; // null terminate string
    Serial.print(from);
    Serial.print(F("->"));
    Serial.print(F(" :"));
    Serial.println(buf);
    if (nodeId == 1) printNodeInfo(from, buf); // debugging
    // we received data from node 'from', but it may have actually come from an intermediate node
    RHRouter::RoutingTableEntry *route = manager->getRouteTo(from);
    if (route->next_hop != 0) {
      rssi[route->next_hop-1] = rf95.lastRssi();
    }
  }
}

}

}

This is OUTPUT-

program is going to execute initializing node init successful Set frequency successful RF95 ready ->2 :[{"n":255,"r":0},{"n":0,"r":0},{"n":0,"r":0},{"n":0,"r":0}] ! no route node: {"1": [{"n":255,"r":0},{"n":0,"r":0},{"n":0,"r":0},{"n":0,"r":0}]} ->3 :[{"n":255,"r":0},{"n":0,"r":0},{"n":0,"r":0},{"n":0,"r":0}]

The problem is that I am not getting noe no. and rsi values of the nodes. I am using 4 nodes. Please help and thanks in advance.

[sitharthen]

am also getting the same output NO ROUTE is found. Did you solved it ? any one can help me?