Hello, I have 2 software serial devices, a gps and pm sensor, I ma only seeing the reading from the pm sensor and I think it's because the serial ports are interfering. I looked at the Arduino documentation but I don't know how to append the sample code to my code. I have attached my code below if anyone who know how you would go about this please let me know. Thanks!
#include <TinyGPSPlus.h>
#include <SoftwareSerial.h>
#include <STM32SD.h>
#include "Adafruit_PM25AQI.h"
SoftwareSerial pmSerial(6, 5);
#ifndef SD_DETECT_PIN
#define SD_DETECT_PIN SD_DETECT_NONE
#endif
Adafruit_PM25AQI aqi = Adafruit_PM25AQI();
static const int RXPin = 9, TXPin = 10;
static const uint32_t GPSBaud = 9600;
uint32_t A[] = { A0, A1, A2};
TinyGPSPlus gps;
SoftwareSerial ss(RXPin, TXPin);
File dataFile;
void setup()
{
ss.begin(GPSBaud);
Serial.begin(9600);
while (!Serial) {
;
}
Serial.print("Starting...");
delay(1000);
pmSerial.begin(9600);
if (! aqi.begin_UART(&pmSerial)) { // connect to the sensor over software serial
Serial.println("Could not find PM 2.5 sensor!");
while (1) delay(10);
}
Serial.println("PM25 found!");
Serial.print("Initializing SD card...");
while (!SD.begin(SD_DETECT_PIN))
{
delay(10);
}
delay(100);
Serial.println("card initialized.");
dataFile = SD.open("datalog.csv", FILE_WRITE);
if (dataFile) {
dataFile.seek(dataFile.size());
}
else {
Serial.println("error opening datalog.csv");
}
}
void loop() {
PM25_AQI_Data data;
if (! aqi.read(&data)) {
Serial.println("Could not read from AQI");
delay(250);
return;
}
#define VBATPIN A6
float measuredvbat = analogRead(VBATPIN);
measuredvbat *= 2; // we divided by 2, so multiply back
measuredvbat *= 3.3; // Multiply by 3.3V, our reference voltage
measuredvbat /= 1024; // convert to voltage
Serial.print("VBat: " ); Serial.println(measuredvbat);
static const double LONDON_LAT = 51.508131, LONDON_LON = -0.128002;
printInt(gps.satellites.value(), gps.satellites.isValid(), 5);
printFloat(gps.hdop.hdop(), gps.hdop.isValid(), 6, 1);
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.feet(), 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.deg()) : "*** ", 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();
smartDelay(1000);
if (millis() > 5000 && gps.charsProcessed() < 10)
Serial.println(F("No GPS data received: check wiring"));
Serial.println("AQI reading success");
Serial.println(" ");
Serial.print(F("PM 1.0: ")); Serial.print(data.pm10_env);
Serial.print(F("\t\tPM 2.5: ")); Serial.print(data.pm25_env);
Serial.print(F("\t\tPM 10: ")); Serial.println(data.pm100_env);
Serial.println(" ");
if (dataFile) {
//PM Values
char buffer[10]; // -32768 + 0
sprintf(buffer, "%d,", data.pm10_env);
dataFile.println(" ,");
dataFile.print(buffer);
Serial.print ("PM 1.0: "); Serial.println(buffer);
sprintf(buffer, "%d,", data.pm25_env);
dataFile.print(buffer);
Serial.print ("PM 2.5: "); Serial.println(buffer);
sprintf(buffer, "%d,", data.pm100_env);
dataFile.print(buffer);
Serial.print ("PM 10: "); Serial.println(buffer);
dataFile.print(",");
// GPS Data
String lt(gps.location.lat(), 8);
dataFile.print(lt.c_str());
dataFile.print(",");
String lo(gps.location.lng(), 8);
dataFile.print(lo.c_str());
dataFile.print(",");
String datemonth(gps.date.month());
dataFile.print(datemonth.c_str());
dataFile.print("/");
String dateday(gps.date.day());
dataFile.print(dateday.c_str());
dataFile.print("/");
String dateyear(gps.date.year());
dataFile.print(dateyear.c_str());
dataFile.print(",");
if (gps.time.hour() < 10) dataFile.print("0");
String timehour(gps.time.hour());
dataFile.print(timehour.c_str());
dataFile.print(":");
if (gps.time.minute() < 10) dataFile.print("0");
String timemin(gps.time.minute());
dataFile.print(timemin.c_str());
dataFile.print(":");
if (gps.time.second() < 10) dataFile.print("0");
String timesecond(gps.time.second());
dataFile.print(timesecond.c_str());
dataFile.print(",");
String alt(gps.altitude.feet(),7);
dataFile.print(alt.c_str());
dataFile.print(",");
// Clean up
dataFile.flush();
Serial.println("");
Serial.print("File Size: ");
Serial.println(dataFile.size());
if (dataFile.size() < 10) {
Serial.println("ERROR LOW FILE SIZE");
}
Serial.println("-------------------------------");
}
delay(100);
}
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);
}
