Hi, I’m having trouble receiving NMEA output from Reach RS+ over the Reach RS+/RS2 cable 2m with DB9 MALE connector via an DB9 RS232 Serial to Terminal Block Adapter to an Arduino Uno.
ReachView version: v2.18.1
The connection are as follows:
- Reach_Rx (DB9 Pin 2) to pin 4 on Arduino
- Reach_Tx (DB9 Pin 3) to pin 3 on Arduino
- Reach_GND (DB9 Pin 5) to GND on Arduino
Voltage between Reach_Tx to GND: 4.21- 4.46 V
Voltage between Reach_Rx to GND: ~0.0 V
I have followed the schematics: Reach RS232 port and RS Connecter to DB9 Male.
I’m using the TinyGPS++ code example “DeviceExample” with serial monitor (57600 baud rate) and the Reach RS+ outputting Serial, UART, NMEA, baud rate: 57600.
Here is my code:
Summary
#include <TinyGPS++.h>
#include <SoftwareSerial.h>
/*
This sample sketch demonstrates the normal use of a TinyGPS++ (TinyGPSPlus) object.
It requires the use of SoftwareSerial, and assumes that you have a
4800-baud serial GPS device hooked up on pins 4(rx) and 3(tx).
*/
static const int RXPin = 4, TXPin = 3;
static const uint32_t GPSBaud = 57600;
// The TinyGPS++ object
TinyGPSPlus gps;
// The serial connection to the GPS device
SoftwareSerial ss(RXPin, TXPin);
void setup()
{
Serial.begin(57600);
ss.begin(GPSBaud);
Serial.println(F(“DeviceExample.ino”));
Serial.println(F(“A simple demonstration of TinyGPS++ with an attached GPS module”));
Serial.print(F("Testing TinyGPS++ library v. ")); Serial.println(TinyGPSPlus::libraryVersion());
Serial.println(F(“by Mikal Hart”));
Serial.println();
}
void loop()
{
// This sketch displays information every time a new sentence is correctly encoded.
while (ss.available() > 0)
if (gps.encode(ss.read()))
displayInfo();
if (millis() > 5000 && gps.charsProcessed() < 10)
{
Serial.println(F(“No GPS detected: check wiring.”));
delay(1000);
}
}
void displayInfo()
{
Serial.print(F(“Location: “));
if (gps.location.isValid())
{
Serial.print(gps.location.lat(), 6);
Serial.print(F(”,”));
Serial.print(gps.location.lng(), 6);
}
else
{
Serial.print(F(“INVALID”));
}
Serial.print(F(" Date/Time: “));
if (gps.date.isValid())
{
Serial.print(gps.date.month());
Serial.print(F(”/“));
Serial.print(gps.date.day());
Serial.print(F(”/"));
Serial.print(gps.date.year());
}
else
{
Serial.print(F(“INVALID”));
}
Serial.print(F(" “));
if (gps.time.isValid())
{
if (gps.time.hour() < 10) Serial.print(F(“0”));
Serial.print(gps.time.hour());
Serial.print(F(”:“));
if (gps.time.minute() < 10) Serial.print(F(“0”));
Serial.print(gps.time.minute());
Serial.print(F(”:“));
if (gps.time.second() < 10) Serial.print(F(“0”));
Serial.print(gps.time.second());
Serial.print(F(”."));
if (gps.time.centisecond() < 10) Serial.print(F(“0”));
Serial.print(gps.time.centisecond());
}
else
{
Serial.print(F(“INVALID”));
}
Serial.println();
}
I receive location data from both my Reach RS+ Base and rover, but can’t receive the information from either of the Base and Rover over the RS232 port . I have tried switching the Rx and Tx pins. Do I need a RS232 to TTL converter board? What is their else left to try?
I hope you can help.
Best,
Kaspar