sakuraio: some values into single channel

gistfile1.txt

#include <TinyGPS++.h>
#include <SoftwareSerial.h>
#include <SakuraIO.h>
#include <string.h>

/*
   This sample code 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 int GPSBaud = 9600;

// The TinyGPS++ object
TinyGPSPlus gps;
TinyGPSCustom c_hdop(gps, "GPGSA", 16); // $GPGSA sentence, 17th element
TinyGPSCustom c_vdop(gps, "GPGSA", 17); // $GPGSA sentence, 17th element

// The serial connection to the GPS device
SoftwareSerial ss(RXPin, TXPin);

// Sakura IoT
SakuraIO_I2C sakuraio;

void setup()
{
  Serial.begin(115200);
  ss.begin(GPSBaud);

  Serial.print("Waiting to come online");
  for (;;) {
    if ((sakuraio.getConnectionStatus() & 0x80) == 0x80) {
      Serial.println(" connected");
      break;
    }
    Serial.print(".");
    delay(100);
  }

  Serial.println(F("FullExample.ino"));
  Serial.println(F("An extensive example of many interesting TinyGPS++ features"));
  Serial.print(F("Testing TinyGPS++ library v. ")); Serial.println(TinyGPSPlus::libraryVersion());
  Serial.println(F("by Mikal Hart"));
  Serial.println();
  Serial.println(F("Sats HDOP Latitude   Longitude   Fix  Date       Time     Date Alt    Course Speed Card  Distance Course Card  Chars Sentences Checksum"));
  Serial.println(F("          (deg)      (deg)       Age                      Age  (m)    --- from GPS ----  ---- to London  ----  RX    RX        Fail"));
  Serial.println(F("---------------------------------------------------------------------------------------------------------------------------------------"));
}

void loop()
{
  static const double LONDON_LAT = 51.508131, LONDON_LON = -0.128002;

  printInt(gps.satellites.value(), gps.satellites.isValid(), 5);
  printInt(gps.hdop.value(), gps.hdop.isValid(), 5);
  printFloat(gps.location.lat(), gps.location.isValid(), 11, 6);
  printFloat(gps.location.lng(), gps.location.isValid(), 12, 6);
  printInt(gps.location.age(), gps.location.isValid(), 5);
  printDateTime(gps.date, gps.time);
  printFloat(gps.altitude.meters(), gps.altitude.isValid(), 7, 2);
  printFloat(gps.course.deg(), gps.course.isValid(), 7, 2);
  printFloat(gps.speed.kmph(), gps.speed.isValid(), 6, 2);
  printStr(gps.course.isValid() ? TinyGPSPlus::cardinal(gps.course.value()) : "*** ", 6);

  unsigned long distanceKmToLondon =
    (unsigned long)TinyGPSPlus::distanceBetween(
      gps.location.lat(),
      gps.location.lng(),
      LONDON_LAT,
      LONDON_LON) / 1000;
  printInt(distanceKmToLondon, gps.location.isValid(), 9);

  double courseToLondon =
    TinyGPSPlus::courseTo(
      gps.location.lat(),
      gps.location.lng(),
      LONDON_LAT,
      LONDON_LON);

  printFloat(courseToLondon, gps.location.isValid(), 7, 2);

  const char *cardinalToLondon = TinyGPSPlus::cardinal(courseToLondon);

  printStr(gps.location.isValid() ? cardinalToLondon : "*** ", 6);

  printInt(gps.charsProcessed(), true, 6);
  printInt(gps.sentencesWithFix(), true, 10);
  printInt(gps.failedChecksum(), true, 9);
  Serial.println();

  // channel 1 latitude and longitude
  float lng = float(gps.location.lng());
  float lat = float(gps.location.lat());

  unsigned char (&_lng)[8] = reinterpret_cast<unsigned char (&)[8]>(lng);
  unsigned char (&_lat)[sizeof(float)] = reinterpret_cast<unsigned char (&)[sizeof(float)]>(lat);

  memcpy(_lng + 4, _lat, 4);
  sakuraio.enqueueTx(1, _lng);

  // channel 2 altitude, hdop, vdop
  float alt = float(gps.altitude.meters()); // , gps.altitude.isValid()
//  int16_t _hdop = int16_t(gps.hdop.value());
  int16_t _hdop = int16_t(strtod(c_hdop.value(), NULL) * 100.0);
  int16_t _vdop = int16_t(strtod(c_vdop.value(), NULL) * 100.0);

  unsigned char (&_ch2)[8] = reinterpret_cast<unsigned char(&)[8]>(alt);
  unsigned char (&__hdop)[2] = reinterpret_cast<unsigned char(&)[2]>(_hdop);
  unsigned char (&__vdop)[2] = reinterpret_cast<unsigned char(&)[2]>(_vdop);
  memcpy(_ch2 + 4, __hdop, 2);
  memcpy(_ch2 + 6, __vdop, 2);
  sakuraio.enqueueTx(2, _ch2);

  sakuraio.send();
  smartDelay(2000);

  //  if (millis() > 5000 && gps.charsProcessed() < 10) {
  //    Serial.println(F("No GPS data received: check wiring"));
  //  }
}

// This custom version of delay() ensures that the gps object
// is being "fed".
static void smartDelay(unsigned long ms)
{
  unsigned long start = millis();
  do
  {
    while (ss.available())
      gps.encode(ss.read());
  } while (millis() - start < ms);
}

static void printFloat(float val, bool valid, int len, int prec)
{
  if (!valid)
  {
    while (len-- > 1)
      Serial.print('*');
    Serial.print(' ');
  }
  else
  {
    Serial.print(val, prec);
    int vi = abs((int)val);
    int flen = prec + (val < 0.0 ? 2 : 1); // . and -
    flen += vi >= 1000 ? 4 : vi >= 100 ? 3 : vi >= 10 ? 2 : 1;
    for (int i = flen; i < len; ++i)
      Serial.print(' ');
  }
  smartDelay(0);
}

static void printInt(unsigned long val, bool valid, int len)
{
  char sz[32] = "*****************";
  if (valid)
    sprintf(sz, "%ld", val);
  sz[len] = 0;
  for (int i = strlen(sz); i < len; ++i)
    sz[i] = ' ';
  if (len > 0)
    sz[len - 1] = ' ';
  Serial.print(sz);
  smartDelay(0);
}

static void printDateTime(TinyGPSDate &d, TinyGPSTime &t)
{
  if (!d.isValid())
  {
    Serial.print(F("********** "));
  }
  else
  {
    char sz[32];
    sprintf(sz, "%02d/%02d/%02d ", d.month(), d.day(), d.year());
    Serial.print(sz);
  }

  if (!t.isValid())
  {
    Serial.print(F("******** "));
  }
  else
  {
    char sz[32];
    sprintf(sz, "%02d:%02d:%02d ", t.hour(), t.minute(), t.second());
    Serial.print(sz);
  }

  printInt(d.age(), d.isValid(), 5);
  smartDelay(0);
}

static void printStr(const char *str, int len)
{
  int slen = strlen(str);
  for (int i = 0; i < len; ++i)
    Serial.print(i < slen ? str[i] : ' ');
  smartDelay(0);
}