/*********************************************************************
 This is an example for our nRF52 based Bluefruit LE modules

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/* This example show how to use Software Serial on Bluefruit nRF52
 * to interact with GPS FeatherWing https://www.adafruit.com/product/3133
 * 
 * Hardware Set up
 * - Connect 3V and GND to GPS wing
 * - 
 */

#include <SoftwareSerial.h>

#define SW_RXD    A0
#define SW_TXD    A1

// Declare an Software Serial instance
SoftwareSerial mySerial(SW_RXD, SW_TXD);

void setup() {

  // Init hardware UART <-> Serial Monitor
  Serial.begin(115200);
  while ( !Serial ) delay(10);   // for nrf52840 with native usb

  Serial.println("GPS echo test");

  // Init Software Uart <-> GPS FeatherWing
  mySerial.begin(9600);      // default NMEA GPS baud
}

     
void loop() {

  // Pass data from Serial (HW uart) to GPS Wing (SW Uart)
  if (Serial.available()) {
    char c = Serial.read();
    mySerial.write(c);
  }

  // Pass data from GPS Wing (SW Uart) to Serial (HW uart)
  if (mySerial.available()) {
    char c = mySerial.read();
    Serial.write(c);
  }
}