Hellow, my name is BoAn. I’m Taiwanese. I’ve bought DRAGINO LoRa IOT Kit which is 915Hz. I’m also testing the simplest communication by upload LoRa_Simple_Client_Arduino to Arduino Uno with LoRa Shield and upload LoRa_Simple_Server_Yun to LG01-P.
However, When I upload the sketch to Arduino Uno, I got
“LoRa_Simple_Client_Arduino:804:16: error: expected primary-expression before ‘.’ token.”
When I upload the other sketch to LG01-P, I got
“‘class RH_RF95’ has no member named ‘setSpreadingFactor’”
It’s strange that how come it goes wrong while I using the sample code which frequency has been edit with the right one.
Please give me a hand. Thank you.
The following is my code.
LoRa_Simple_Server_Yun
/*
LoRa Simple Yun Server :
Support Devices: LG01.
Example sketch showing how to create a simple messageing server,
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 LoRa Simple Client
User need to use the modified RadioHead library from:
https://github.com/dragino/RadioHead
modified 16 11 2016
by Edwin Chen <support@dragino.com>
Dragino Technology Co., Limited
*/
//If you use Dragino IoT Mesh Firmware, uncomment below lines.
//For product: LG01.
#define BAUDRATE 115200
//If you use Dragino Yun Mesh Firmware , uncomment below lines.
//#define BAUDRATE 250000
#include <Console.h>
#include <SPI.h>
#include <RH_RF95.h>
// Singleton instance of the radio driver
RH_RF95 rf95;
int led = A2;
float frequency = 915.0;
void setup()
{
pinMode(led, OUTPUT);
Bridge.begin(BAUDRATE);
Console.begin();
while (!Console) ; // Wait for console port to be available
Console.println("Start Sketch");
if (!rf95.init())
Console.println("init failed");
// Setup ISM frequency
rf95.setFrequency(frequency); //THE BUG IS IN THIS LINE
// Setup Power,dBm
rf95.setTxPower(13);
// Setup Spreading Factor (6 ~ 12)
rf95.setSpreadingFactor(7);//THE BUG IS IN THIS LINE
// Setup BandWidth, option: 7800,10400,15600,20800,31200,41700,62500,125000,250000,500000
rf95.setSignalBandwidth(125000);
// Setup Coding Rate:5(4/5),6(4/6),7(4/7),8(4/8)
rf95.setCodingRate4(5);
Console.print("Listening on frequency: ");
Console.println(frequency);
}
void loop()
{
if (rf95.available())
{
// Should be a message for us now
uint8_t buf[RH_RF95_MAX_MESSAGE_LEN];
uint8_t len = sizeof(buf);
if (rf95.recv(buf, &len))
{
digitalWrite(led, HIGH);
RH_RF95::printBuffer("request: ", buf, len);
Console.print("got request: ");
Console.println((char*)buf);
Console.print("RSSI: ");
Console.println(rf95.lastRssi(), DEC);
// Send a reply
uint8_t data[] = "And hello back to you";
rf95.send(data, sizeof(data));
rf95.waitPacketSent();
Console.println("Sent a reply");
digitalWrite(led, LOW);
}
else
{
Console.println("recv failed");
}
}
}
LoRa_Simple_Client_Arduino
#include <SPI.h>
#include <RH_RF95.h>
// Singleton instance of the radio driver
// RH_RF95 rf95
float frequency = 915.0;
void setup()
{
Serial.begin(9600);
//while (!Serial) ; // Wait for serial port to be available
Serial.println("Start LoRa Client");
if (!RH_RF95.init())
Serial.println("init failed");
// Setup ISM frequency
rf95.setFrequency(frequency);
// Setup Power,dBm
rf95.setTxPower(13);
// Setup Spreading Factor (6 ~ 12)
rf95.setSpreadingFactor(7);
// Setup BandWidth, option: 7800,10400,15600,20800,31200,41700,62500,125000,250000,500000
//Lower BandWidth for longer distance.
rf95.setSignalBandwidth(125000);
// Setup Coding Rate:5(4/5),6(4/6),7(4/7),8(4/8)
rf95.setCodingRate4(5);
}
void loop()
{
Serial.println("Sending to LoRa Server");
// Send a message to LoRa Server
uint8_t data[] = "Hello, this is device 1";
RH_RF95.send(data, sizeof(data));
RH_RF95.waitPacketSent();
// Now wait for a reply
uint8_t buf[RH_RF95_MAX_MESSAGE_LEN];
uint8_t len = sizeof(buf);
if (RH_RF95.waitAvailableTimeout(3000))
{
// Should be a reply message for us now
if (RH_RF95.recv(buf, &len))
{
Serial.print("got reply: ");
Serial.println((char*)buf);
Serial.println("RSSI: ");
Serial.println(RH_RF95.lastRssi(), DEC); //@THE BUG IS IN THIS LINE
}
else
{
Serial.println("recv failed");
}
}
else
{
Serial.println("No reply, is LoRa server running?");
}
delay(5000);
}