Error while compiling, repeated issues while using sample code

Recently bought a Huzzah32 and the Ultimate GPS Featherwing thing. Got it soldered and cabled up. Trying to get any, literally any, of the sample sketches to work. One uploaded, but gave one line of gibberish in the serial monitor. The rest have given me "Fatal Error SoftwareSerial.h No Such File or Directory.

Running Linux Mint KDE 18.2, Arduino 1.8.5

Current sample sketch

// Test code for Adafruit GPS modules using MTK3329/MTK3339 driver
//
// This code shows how to listen to the GPS module in an interrupt
// which allows the program to have more 'freedom' - just parse
// when a new NMEA sentence is available! Then access data when
// desired.
//
// Tested and works great with the Adafruit Ultimate GPS module
// using MTK33x9 chipset
//    ------> http://www.adafruit.com/products/746
// Pick one up today at the Adafruit electronics shop 
// and help support open source hardware & software! -ada

#include <Adafruit_GPS.h>
#include <SoftwareSerial.h>

// If you're using a GPS module:
// Connect the GPS Power pin to 5V
// Connect the GPS Ground pin to ground
// If using software serial (sketch example default):
//   Connect the GPS TX (transmit) pin to Digital 3
//   Connect the GPS RX (receive) pin to Digital 2
// If using hardware serial (e.g. Arduino Mega):
//   Connect the GPS TX (transmit) pin to Arduino RX1, RX2 or RX3
//   Connect the GPS RX (receive) pin to matching TX1, TX2 or TX3

// If you're using the Adafruit GPS shield, change 
// SoftwareSerial mySerial(3, 2); -> SoftwareSerial mySerial(8, 7);
// and make sure the switch is set to SoftSerial

// If using software serial, keep this line enabled
// (you can change the pin numbers to match your wiring):
SoftwareSerial mySerial(3, 2);

// If using hardware serial (e.g. Arduino Mega), comment out the
// above SoftwareSerial line, and enable this line instead
// (you can change the Serial number to match your wiring):

//HardwareSerial mySerial = Serial1;


Adafruit_GPS GPS(&mySerial);


// Set GPSECHO to 'false' to turn off echoing the GPS data to the Serial console
// Set to 'true' if you want to debug and listen to the raw GPS sentences. 
#define GPSECHO  true

// this keeps track of whether we're using the interrupt
// off by default!
boolean usingInterrupt = false;
void useInterrupt(boolean); // Func prototype keeps Arduino 0023 happy

void setup()  
{
    
  // connect at 115200 so we can read the GPS fast enough and echo without dropping chars
  // also spit it out
  Serial.begin(115200);
  Serial.println("Adafruit GPS library basic test!");

  // 9600 NMEA is the default baud rate for Adafruit MTK GPS's- some use 4800
  GPS.begin(9600);
  
  // uncomment this line to turn on RMC (recommended minimum) and GGA (fix data) including altitude
  GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCGGA);
  // uncomment this line to turn on only the "minimum recommended" data
  //GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCONLY);
  // For parsing data, we don't suggest using anything but either RMC only or RMC+GGA since
  // the parser doesn't care about other sentences at this time
  
  // Set the update rate
  GPS.sendCommand(PMTK_SET_NMEA_UPDATE_1HZ);   // 1 Hz update rate
  // For the parsing code to work nicely and have time to sort thru the data, and
  // print it out we don't suggest using anything higher than 1 Hz

  // Request updates on antenna status, comment out to keep quiet
  GPS.sendCommand(PGCMD_ANTENNA);

  // the nice thing about this code is you can have a timer0 interrupt go off
  // every 1 millisecond, and read data from the GPS for you. that makes the
  // loop code a heck of a lot easier!
  useInterrupt(true);

  delay(1000);
  // Ask for firmware version
  mySerial.println(PMTK_Q_RELEASE);
}


// Interrupt is called once a millisecond, looks for any new GPS data, and stores it
SIGNAL(TIMER0_COMPA_vect) {
  char c = GPS.read();
  // if you want to debug, this is a good time to do it!
#ifdef UDR0
  if (GPSECHO)
    if (c) UDR0 = c;  
    // writing direct to UDR0 is much much faster than Serial.print 
    // but only one character can be written at a time. 
#endif
}

void useInterrupt(boolean v) {
  if (v) {
    // Timer0 is already used for millis() - we'll just interrupt somewhere
    // in the middle and call the "Compare A" function above
    OCR0A = 0xAF;
    TIMSK0 |= _BV(OCIE0A);
    usingInterrupt = true;
  } else {
    // do not call the interrupt function COMPA anymore
    TIMSK0 &= ~_BV(OCIE0A);
    usingInterrupt = false;
  }
}

uint32_t timer = millis();
void loop()                     // run over and over again
{
  // in case you are not using the interrupt above, you'll
  // need to 'hand query' the GPS, not suggested :(
  if (! usingInterrupt) {
    // read data from the GPS in the 'main loop'
    char c = GPS.read();
    // if you want to debug, this is a good time to do it!
    if (GPSECHO)
      if (c) Serial.print(c);
  }
  
  // if a sentence is received, we can check the checksum, parse it...
  if (GPS.newNMEAreceived()) {
    // a tricky thing here is if we print the NMEA sentence, or data
    // we end up not listening and catching other sentences! 
    // so be very wary if using OUTPUT_ALLDATA and trytng to print out data
    //Serial.println(GPS.lastNMEA());   // this also sets the newNMEAreceived() flag to false
  
    if (!GPS.parse(GPS.lastNMEA()))   // this also sets the newNMEAreceived() flag to false
      return;  // we can fail to parse a sentence in which case we should just wait for another
  }

  // if millis() or timer wraps around, we'll just reset it
  if (timer > millis())  timer = millis();

  // approximately every 2 seconds or so, print out the current stats
  if (millis() - timer > 2000) { 
    timer = millis(); // reset the timer
    
    Serial.print("\nTime: ");
    Serial.print(GPS.hour, DEC); Serial.print(':');
    Serial.print(GPS.minute, DEC); Serial.print(':');
    Serial.print(GPS.seconds, DEC); Serial.print('.');
    Serial.println(GPS.milliseconds);
    Serial.print("Date: ");
    Serial.print(GPS.day, DEC); Serial.print('/');
    Serial.print(GPS.month, DEC); Serial.print("/20");
    Serial.println(GPS.year, DEC);
    Serial.print("Fix: "); Serial.print((int)GPS.fix);
    Serial.print(" quality: "); Serial.println((int)GPS.fixquality); 
    if (GPS.fix) {
      Serial.print("Location: ");
      Serial.print(GPS.latitude, 4); Serial.print(GPS.lat);
      Serial.print(", "); 
      Serial.print(GPS.longitude, 4); Serial.println(GPS.lon);
      Serial.print("Location (in degrees, works with Google Maps): ");
      Serial.print(GPS.latitudeDegrees, 4);
      Serial.print(", "); 
      Serial.println(GPS.longitudeDegrees, 4);
      
      Serial.print("Speed (knots): "); Serial.println(GPS.speed);
      Serial.print("Angle: "); Serial.println(GPS.angle);
      Serial.print("Altitude: "); Serial.println(GPS.altitude);
      Serial.print("Satellites: "); Serial.println((int)GPS.satellites);
    }
  }
}

Current error.

Arduino: 1.8.5 (Linux), Board: "Adafruit ESP32 Feather, 80MHz, 921600, None"

/home/lt-shiny-sides/Downloads/arduino-1.8.5/libraries/Adafruit_GPS/examples/parsing/parsing.pde:15:28: fatal error: SoftwareSerial.h: No such file or directory
compilation terminated.
exit status 1
Error compiling for board Adafruit ESP32 Feather.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

Everything I have found has been for other boards and has also stated many times that SoftwareSerial.h is already included in the libraries.

I attempted to alleviate the IDE's worries by installing this into the libraries folder as SoftwareSerial. It then gave the following error.

Arduino: 1.8.5 (Linux), Board: "Adafruit ESP32 Feather, 80MHz, 921600, None"

WARNING: library SoftwareSerial claims to run on (esp32) architecture(s) and may be incompatible with your current board which runs on (arduino-esp32) architecture(s).
parsing:42: error: no matching function for call to 'Adafruit_GPS::Adafruit_GPS(SoftwareSerial*)'
 Adafruit_GPS GPS(&mySerial);
                           ^
In file included from /home/lt-shiny-sides/Downloads/arduino-1.8.5/libraries/Adafruit_GPS/examples/parsing/parsing.pde:14:0:
/home/lt-shiny-sides/Downloads/arduino-1.8.5/libraries/Adafruit_GPS/Adafruit_GPS.h:115:3: note: candidate: Adafruit_GPS::Adafruit_GPS(HardwareSerial*)
   Adafruit_GPS(HardwareSerial *ser); // Constructor when using HardwareSerial
   ^
/home/lt-shiny-sides/Downloads/arduino-1.8.5/libraries/Adafruit_GPS/Adafruit_GPS.h:115:3: note:   no known conversion for argument 1 from 'SoftwareSerial*' to 'HardwareSerial*'
/home/lt-shiny-sides/Downloads/arduino-1.8.5/libraries/Adafruit_GPS/Adafruit_GPS.h:104:7: note: candidate: constexpr Adafruit_GPS::Adafruit_GPS(const Adafruit_GPS&)
 class Adafruit_GPS {
       ^
/home/lt-shiny-sides/Downloads/arduino-1.8.5/libraries/Adafruit_GPS/Adafruit_GPS.h:104:7: note:   no known conversion for argument 1 from 'SoftwareSerial*' to 'const Adafruit_GPS&'
/home/lt-shiny-sides/Downloads/arduino-1.8.5/libraries/Adafruit_GPS/Adafruit_GPS.h:104:7: note: candidate: constexpr Adafruit_GPS::Adafruit_GPS(Adafruit_GPS&&)
/home/lt-shiny-sides/Downloads/arduino-1.8.5/libraries/Adafruit_GPS/Adafruit_GPS.h:104:7: note:   no known conversion for argument 1 from 'SoftwareSerial*' to 'Adafruit_GPS&&'
parsing:92: error: expected constructor, destructor, or type conversion before '(' token
 SIGNAL(TIMER0_COMPA_vect) {
        ^
parsing:92: error: expected constructor, destructor, or type conversion before '(' token
 SIGNAL(TIMER0_COMPA_vect) {
       ^
/home/lt-shiny-sides/Downloads/arduino-1.8.5/libraries/Adafruit_GPS/examples/parsing/parsing.pde: In function 'void useInterrupt(boolean)':
parsing:107: error: 'OCR0A' was not declared in this scope
     OCR0A = 0xAF;
     ^
parsing:108: error: 'TIMSK0' was not declared in this scope
     TIMSK0 |= _BV(OCIE0A);
     ^
In file included from sketch/parsing.pde.cpp:1:0:
parsing:108: error: 'OCIE0A' was not declared in this scope
     TIMSK0 |= _BV(OCIE0A);
                   ^
/home/lt-shiny-sides/Downloads/arduino-1.8.5/hardware/espressif/arduino-esp32/cores/esp32/Arduino.h:106:25: note: in definition of macro '_BV'
 #define _BV(b) (1UL << (b))
                         ^
parsing:112: error: 'TIMSK0' was not declared in this scope
     TIMSK0 &= ~_BV(OCIE0A);
     ^
In file included from sketch/parsing.pde.cpp:1:0:
parsing:112: error: 'OCIE0A' was not declared in this scope
     TIMSK0 &= ~_BV(OCIE0A);
                    ^
/home/lt-shiny-sides/Downloads/arduino-1.8.5/hardware/espressif/arduino-esp32/cores/esp32/Arduino.h:106:25: note: in definition of macro '_BV'
 #define _BV(b) (1UL << (b))
                         ^
exit status 1
no matching function for call to 'Adafruit_GPS::Adafruit_GPS(SoftwareSerial*)'

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

Can someone help me out here? I have no idea whats going on or why its having difficulty just compiling a sample sketch.

The ESP32 hardware package does not bundle a SoftwareSerial library:

Although a compatible SoftwareSerial library is listed at the link above, the best thing would be for you to connect the module to the pins for one of the unused hardware serial ports on your ESP32 Feather, then modify the code to use that hardware serial port instead of the SoftwareSerial library.

LtShinySides:

WARNING: library SoftwareSerial claims to run on (esp32) architecture(s) and may be incompatible with your current board which runs on (arduino-esp32) architecture(s).

Someone didn't follow the installation instructions for the ESP32 hardware package! If you had, the architecture folder name would be esp32, not arduino-esp32 and you wouldn't get that warning. In this case it didn't cause a problem but it has caused a lot of confusion in the past:

pert:
The ESP32 hardware package does not bundle a SoftwareSerial library:
Fatal error: SoftwareSerial.h: No such file or directory · Issue #296 · espressif/arduino-esp32 · GitHub
Although a compatible SoftwareSerial library is listed at the link above, the best thing would be for you to connect the module to the pins for one of the unused hardware serial ports on your ESP32 Feather, then modify the code to use that hardware serial port instead of the SoftwareSerial library.

Ironically I have that exact link already open in my browser! Currently I only have the RX,TX,3V,GND pins used, on both boards. Should I use other pins on the ESP instead of RX/TX?

pert:
Someone didn't follow the installation instructions for the ESP32 hardware package! If you had, the architecture folder name would be esp32, not arduino-esp32 and you wouldn't get that warning. In this case it didn't cause a problem but it has caused a lot of confusion in the past:
WiFi.h collides with the internal Arduino WiFi.h · Issue #20 · espressif/arduino-esp32 · GitHub

I have had my share of bumbles and mistakes relearning Linux, leading to the mislabeling of the ESP32 folder. That does explain why I was seeing doubles in my board menu though, as I have one labeled arduino-esp32 and one esp32.

From Pinouts | Adafruit HUZZAH32 - ESP32 Feather | Adafruit Learning System

RX and TX are the additional Serial1 pins, and are not connected to the USB/Serial converter.

Connect the module to the RX and TX pins on the ESP32 Feather in an RX-TX, TX-RX configuration.
Change this line:

#include <SoftwareSerial.h>

to:

//#include <SoftwareSerial.h>

Change this line:

SoftwareSerial mySerial(3, 2);

to:

//SoftwareSerial mySerial(3, 2);

Change this line:

//HardwareSerial mySerial = Serial1;

to:

HardwareSerial mySerial = Serial1;

After that the sketch should compile and hopefully work!

LtShinySides:
Ironically I have that exact link already open in my browser! Currently I only have the RX,TX,3V,GND pins used, on both boards.

Are you using RX and TX on the ESP32 Feather for something other than the GPS module?

Looking at the Ultimate GPS Featherwing, it appears that if you just plug it right on top of the ESP32 feather the connections will automatically be correct for it connected to the Serial1 pins as long as you didn't cut the RX and TX jumpers.

pert:
Are you using RX and TX on the ESP32 Feather for something other than the GPS module?

Nothing. GPS board is literally the only thing attached right now. I just started on a project so getting to read the incoming GPS data is the first step. I soldered in the pins for RX, TX, GND, and 3V on the GPS board. On the ESP32 board I soldered in the full gamut of header, but only using the RX, TX, GND, and 3V.

Cool, so if you just modify the code as I instructed it should be fine. Let me know how it works.

This works for me.

https://forums.adafruit.com/viewtopic.php?f=25&t=117335

pert:
Looking at the Ultimate GPS Featherwing, it appears that if you just plug it right on top of the ESP32 feather the connections will automatically be correct for it connected to the Serial1 pins as long as you didn't cut the RX and TX jumpers.
Pinouts | Adafruit Ultimate GPS featherwing | Adafruit Learning System

I noticed in the pictures that it was soldered straight to the top, however I wasn't sure if I should solder ALL of the pinouts or only use what was needed. I'm still very new to this, so I wasn't sure.

Changed the code, error as follows.

Arduino: 1.8.5 (Linux), Board: "Adafruit ESP32 Feather, 80MHz, 921600, None"

parsing:92: error: expected constructor, destructor, or type conversion before '(' token
 SIGNAL(TIMER0_COMPA_vect) {
        ^
parsing:92: error: expected constructor, destructor, or type conversion before '(' token
 SIGNAL(TIMER0_COMPA_vect) {
       ^
/tmp/arduino_modified_sketch_345234/parsing.pde: In function 'void useInterrupt(boolean)':
parsing:107: error: 'OCR0A' was not declared in this scope
     OCR0A = 0xAF;
     ^
parsing:108: error: 'TIMSK0' was not declared in this scope
     TIMSK0 |= _BV(OCIE0A);
     ^
In file included from sketch/parsing.pde.cpp:1:0:
parsing:108: error: 'OCIE0A' was not declared in this scope
     TIMSK0 |= _BV(OCIE0A);
                   ^
/home/lt-shiny-sides/Downloads/arduino-1.8.5/hardware/espressif/esp32/cores/esp32/Arduino.h:106:25: note: in definition of macro '_BV'
 #define _BV(b) (1UL << (b))
                         ^
parsing:112: error: 'TIMSK0' was not declared in this scope
     TIMSK0 &= ~_BV(OCIE0A);
     ^
In file included from sketch/parsing.pde.cpp:1:0:
parsing:112: error: 'OCIE0A' was not declared in this scope
     TIMSK0 &= ~_BV(OCIE0A);
                    ^
/home/lt-shiny-sides/Downloads/arduino-1.8.5/hardware/espressif/esp32/cores/esp32/Arduino.h:106:25: note: in definition of macro '_BV'
 #define _BV(b) (1UL << (b))
                         ^
exit status 1
expected constructor, destructor, or type conversion before '(' token

Changed Serial1 to Serial because... I don't see any reason to have Serial1 in there when its not used in any other portion of the code, error as follows.

Arduino: 1.8.5 (Linux), Board: "Adafruit ESP32 Feather, 80MHz, 921600, None"

parsing:92: error: expected constructor, destructor, or type conversion before '(' token
 SIGNAL(TIMER0_COMPA_vect) {
        ^
parsing:92: error: expected constructor, destructor, or type conversion before '(' token
 SIGNAL(TIMER0_COMPA_vect) {
       ^
/tmp/arduino_modified_sketch_563960/parsing.pde: In function 'void useInterrupt(boolean)':
parsing:107: error: 'OCR0A' was not declared in this scope
     OCR0A = 0xAF;
     ^
parsing:108: error: 'TIMSK0' was not declared in this scope
     TIMSK0 |= _BV(OCIE0A);
     ^
In file included from sketch/parsing.pde.cpp:1:0:
parsing:108: error: 'OCIE0A' was not declared in this scope
     TIMSK0 |= _BV(OCIE0A);
                   ^
/home/lt-shiny-sides/Downloads/arduino-1.8.5/hardware/espressif/esp32/cores/esp32/Arduino.h:106:25: note: in definition of macro '_BV'
 #define _BV(b) (1UL << (b))
                         ^
parsing:112: error: 'TIMSK0' was not declared in this scope
     TIMSK0 &= ~_BV(OCIE0A);
     ^
In file included from sketch/parsing.pde.cpp:1:0:
parsing:112: error: 'OCIE0A' was not declared in this scope
     TIMSK0 &= ~_BV(OCIE0A);
                    ^
/home/lt-shiny-sides/Downloads/arduino-1.8.5/hardware/espressif/esp32/cores/esp32/Arduino.h:106:25: note: in definition of macro '_BV'
 #define _BV(b) (1UL << (b))
                         ^
exit status 1
expected constructor, destructor, or type conversion before '(' token

The parsing sketch is written specifically for AVR architecture. You should use File > Examples > Adafruit GPS Library > GPS_HardwareSerial_Parsing. That sketch doesn't have any architecture specific code in it and also is written for use with Serial1 so you don't need to modify it at all.

LtShinySides:
Changed Serial1 to Serial

Don't do that. Serial is connected to the USB-serial chip on your ESP32 Feather. It's used for serial communication with your computer, including uploading sketches to the board but is not broken out on the ESP32 Feather anywhere. The RX and TX pins on the board are Serial1.

LtShinySides:
I don't see any reason to have Serial1 in there when its not used in any other portion of the code

These lines:

HardwareSerial mySerial = Serial1;
Adafruit_GPS GPS(&mySerial);

Gave Serial1 the name "mySerial" and then passed the mySerial object to the Adafruit GPS library, where it is used to communicate with the GPS module. So even though you don't see Serial1 used anywhere else it is certainly used.

gdsports:
This works for me.

https://forums.adafruit.com/viewtopic.php?f=25&t=117335

Works great! Thank you kindly, sir!

And thank you, pert, for the info on the ESP32 board and clarifying some of the issues of the file hierarchy. I'm not sure I would have found that without spending a long time reading literally everything I could find.

pert:
The parsing sketch is written specifically for AVR architecture. You should use File > Examples > Adafruit GPS Library > GPS_HardwareSerial_Parsing. That sketch doesn't have any architecture specific code in it and also is written for use with Serial1 so you don't need to modify it at all.
Don't do that. Serial is connected to the USB-serial chip on your ESP32 Feather. It's used for serial communication with your computer, including uploading sketches to the board but is not broken out on the ESP32 Feather anywhere. The RX and TX pins on the board are Serial1.
These lines:

HardwareSerial mySerial = Serial1;

Adafruit_GPS GPS(&mySerial);



Gave Serial1 the name "mySerial" and then passed the mySerial object to the Adafruit GPS library, where it is used to communicate with the GPS module. So even though you don't see Serial1 used anywhere else it is certainly used.

I see that now.. I need to get back into the coding mindset, I should have caught that. I think its just the IDE throwing me off a little from what I have learned previously. Previously I was using Codeblocks, so everything looks a little different from what I'm used to. And everything I've learned before came from a teach yourself C++ book. All very basic.

Again, I thank you both for your help.

Took gdsports if statement and pasted it into the GPS_HardwareSerial_Parsing, after IDE had its Serial1 fit again and it worked just fine.