here is my coding for my client :
// LoRa 9x_TX
// -*- mode: C++ -*-
// Example sketch showing how to create a simple messaging client (transmitter)
// with the RH_RF95 class. RH_RF95 class does not provide for addressing or
// reliability, so you should only use RH_RF95 if you do not need the higher
// level messaging abilities.
// It is designed to work with the other example LoRa9x_RX
- CODE: SELECT_ALL_CODE
#include <SPI.h>
#include <RH_RF95.h>
#define RFM95_CS 10
#define RFM95_RST 7
#define RFM95_INT 2
#define node_id "B"
// Change to 434.0 or other frequency, must match RX's freq!
#define RF95_FREQ 915.0
// Singleton instance of the radio driver
RH_RF95 rf95(RFM95_CS, RFM95_INT);
const int trigPin = 9;
const int echoPin = 11;
const int ledPin = 13;
long duration;
int distance;
int safetyDistance;
void setup()
{
pinMode(RFM95_RST, OUTPUT);
digitalWrite(RFM95_RST, HIGH);
while (!Serial);
Serial.begin(9600);
delay(100);
Serial.println("Arduino LoRa TX Test!");
// manual reset
digitalWrite(RFM95_RST, LOW);
delay(10);
digitalWrite(RFM95_RST, HIGH);
delay(10);
while (!rf95.init()) {
Serial.println("LoRa radio init failed");
while (1);
}
Serial.println("LoRa radio init OK!");
// Defaults after init are 434.0MHz, modulation GFSK_Rb250Fd250, +13dbM
if (!rf95.setFrequency(RF95_FREQ)) {
Serial.println("setFrequency failed");
while (1);
}
Serial.print("Set Freq to: "); Serial.println(RF95_FREQ);
// Defaults after init are 434.0MHz, 13dBm, Bw = 125 kHz, Cr = 4/5, Sf = 128chips/symbol, CRC on
// The default transmitter power is 13dBm, using PA_BOOST.
// If you are using RFM95/96/97/98 modules which uses the PA_BOOST transmitter pin, then
// you can set transmitter powers from 5 to 23 dBm:
rf95.setTxPower(23, false);
pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
pinMode(echoPin, INPUT); // Sets the echoPin as an Input
pinMode(ledPin, OUTPUT);
}
int16_t packetnum = 0; // packet counter, we increment per xmission
void loop() {
// Clears the trigPin
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
// Sets the trigPin on HIGH state for 10 micro seconds
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
// Reads the echoPin, returns the sound wave travel time in microseconds
duration = pulseIn(echoPin, HIGH);
// Calculating the distance
distance = duration * 0.034 / 2;
safetyDistance = distance;
if (safetyDistance <= 10) {
digitalWrite(ledPin, HIGH);
Serial.print("Distance: ");
Serial.println(distance);
{
Serial.println("Sending to rf95_server");
// Send a message to rf95_server
String radiopacket = "data to you #";
radiopacket += String(packetnum++);
radiopacket += " from ";
radiopacket += node_id;
Serial.print("Sending ");
Serial.println(radiopacket); delay(10);
rf95.send((uint8_t*)(radiopacket.c_str()), radiopacket.length() + 1);
Serial.println("Waiting for packet to complete..."); delay(10);
rf95.waitPacketSent();
// Now wait for a reply
uint8_t buf[RH_RF95_MAX_MESSAGE_LEN];
uint8_t len = sizeof(buf);
Serial.println("Waiting for reply...");
delay(10);
if (rf95.waitAvailableTimeout(1000))
{
// Should be a reply message for us now
if (rf95.recv(buf, &len))
{
Serial.print("Got reply: ");
Serial.println((char*)buf);
Serial.print("RSSI: ");
Serial.println(rf95.lastRssi(), DEC);
}
else
{
Serial.println("Receive failed");
}
}
else
{
Serial.println("No reply, is there a listener around?");
}
delay(10000);
}
}
else {
digitalWrite(ledPin, LOW);
}
// Prints the distance on the Serial Monitor
}
but i got the output (serial monitor)like this :
Arduino LoRa TX Test!
LoRa radio init OK!
Set Freq to: 915.00
Distance: 6
Sending to rf95_server
Sending data to you #0 from B
Waiting for packet to complete...
the serial monitor stuck at the waiting there
any idea what is the problem?
thanks
