bprobbins/purpleairSPI-V5.ino

## purpleairSPI-V5.ino
//Spurpleair.ino - code to display pm2_5 air concentration
//as reported by one selected purpleair community sensor
//Would be nice if possible to average over several sensors and also
//if use of Strings could be eliminated in HttpClient library
#include <Particle.h>
#include <clickButton.h>
#include <HttpClient.h>
#include <sampledata.h>
#include <math.h>

//#define _Digole_Serial_UART_
#define _Digole_Serial_SPI_
#include <DigoleGeo.h>

int FlashVersion = 5;

/******************/
SYSTEM_MODE(MANUAL);

volatile bool reconnectInProgress = false;
volatile bool bootedNoCloud = false;

//for cloud connect retry
unsigned long lastTimeRetry = 0;
#define TWO_MINUTE_MILLIS (2 * 60 * 1000)
#define ONE_MINUTE_MILLIS (1 * 60 * 1000)

unsigned long lastTime = 0;
unsigned long lastTime2 = 0;
unsigned long time_now = 0;
//for resyncing Time
#define ONE_DAY_MILLIS (24 * 60 * 60 * 1000)
volatile int lastsyncTime = 0;
volatile int lastResetTime = 0;

enum displayStatus{dispBOTH,dispLCD,dispLED,dispNONE};

HttpClient http;
http_header_t headers[] = {
    {"Content-Type, application/json"},
    { "User-agent", "www.purpleair.com HttpClient"},
    { NULL, NULL }
};
http_request_t request;
http_response_t response;
char conditionsRequestPath[20];

/**********SET THESE VARIABLES*****************************************/
int loopInterval = 120000;//reports every 2 minutes, please increase after debug

struct sensorInfo { int sensorID = <XXXXX>; char sensorCity[8] = <"7charname">; char sensorLabel[8] = <"7charname>">;};

//easiest way I found to get the id is to click on the sensor
//of interest on the purpleair.com map, then note the 5 digit number
//after &select= in the resulting browser address bar
//Note: To obtain data from multiple sensors, use
//http://www.purpleair.com/json?show=<sensorID>|<sensorID>|<sensorID>|...

/***uncomment define below if static wifi address desired and set in setup()***/
//#define ENABLE_STATIC_IP
IPAddress myAddress(192,168,1,11);//change as needed
IPAddress netmask(255,255,255,0);
IPAddress gateway(192,168,1,1);
IPAddress dns(192,168,1,1);
char IPasStr[16];

//NOTE: one digole Serial Color OLED 160 X 120 1.8" V1 seems more stable at
//5v Photon VIN than at 3.3v from Photon, although another identical
//display doesn't seem to mind 3.3v
//PHOTON  digole(A3, A5, A2) (CLK,DATA,SS)
DigoleSerialDisp digole(A3, A5, A2); //Hardware SPI setup

//uncomment one define below NONE, LRAPA, or AQandU
//#define conversion_NONE
#define conversion_LRAPA
//#define conversion_AQandU

//set as 0,1,2,or 3 for startup display desired
//dispBOTH,dispLCD,dispLED,dispNONE
int curdisplayStatus  = 2; //startup LED display only
/********************************************************************/

char conversionStr[7];
sensorInfo sensorDATA;
char *sensorLabel;
char sensorStr[40];
char *pm2_5ValueStr;
char *lastseenStr;
int lastseenInt;
double pm2_5Double;
char pm2_5[60] = "AQI not yet calculated";

int rgbBrightness = 25;

enum aqiStatus{GREEN,YELLOW,ORANGE,RED,PURPLE};
int state;

// below makes source filename accesible programmatically
#define __FILENAME__ (strrchr(__FILE__, '/') ? strrchr(__FILE__, '/') + 1 : __FILE__)

char gDeviceInfo[240];

#define redPin D2
#define greenPin D3
#define bluePin D4
#define selectPin D6

//Colours defined as 8-bit value RRRG GGBB
#define VGA_BLACK   0x00
#define VGA_WHITE   0x01
#define VGA_BLUE    0x03
#define VGA_DARKRED 0x44
#define VGA_PURPLE	0x61

#define VGA_RED     0x60
#define VGA_GREEN   0x1C
#define VGA_LIME    0x14
#define VGA_YELLOW  0xFC

#define VGA_ORANGE  0xCC

ClickButton selectBTN(selectPin, LOW);
int selectBTNRes = 0;

int max_x, max_y;

#define myOrange 0x00ff3c00 //to distinguish better from yellow
LEDStatus status1(RGB_COLOR_GREEN, LED_PATTERN_FADE, 4000 /* 1 second */, LED_PRIORITY_IMPORTANT);
LEDStatus status2(RGB_COLOR_YELLOW, LED_PATTERN_FADE, 3000 /* 1 second */, LED_PRIORITY_IMPORTANT);
LEDStatus status3(myOrange, LED_PATTERN_FADE, 2000 /* 1 second */, LED_PRIORITY_IMPORTANT);
LEDStatus status4(RGB_COLOR_RED, LED_PATTERN_FADE, 300 /* 1 second */, LED_PRIORITY_IMPORTANT);
LEDStatus status5(RGB_COLOR_MAGENTA, LED_PATTERN_FADE, 100 /* 1 second */, LED_PRIORITY_IMPORTANT);

//USAGE:   bool daylightSavings = IsDST(Time.day(), Time.month(), Time.weekday());
//  Time.zone(daylightSavings? -7 : -8); //-7 in summer GMT-7 DST; -8 in winter GMT-8 and is PST not DST
bool IsDST(int dayOfMonth, int month, int dayOfWeek) {
	// from @BulldogLowell on Particle forum
	if (month < 3 || month > 11) {
		return false;
	}
	if (month > 3 && month < 11) {
		return true;
	}
	int previousSunday = dayOfMonth - (dayOfWeek - 1);
	if (month == 3) {
		return previousSunday >= 8;
	}
  return previousSunday <= 0;
}//bool IsDST(int dayOfMonth, int month, int dayOfWeek)

//Below two functions from:
//https://docs.google.com/document/d/15ijz94dXJ-YAZLi9iZ_RaBwrZ4KtYeCy08goGBwnbCU/edit#
double mycalcAQI(double Cp, double Ih, double Il, double BPh, double BPl) {

        double a = (Ih - Il);
        double b = (BPh - BPl);
        double c = (Cp - BPl);
        return round((a/b) * c + Il);
}

double myaqiFromPM(double pm) {

/*
              Good                              0 - 50         0.0 - 15.0         0.0 – 12.0		GREEN
        Moderate                        51 - 100           >15.0 - 40        12.1 – 35.4	YELLOW
        Unhealthy for Sensitive Groups   101 – 150     >40 – 65          35.5 – 55.4	ORANGE
        Unhealthy                                 151 – 200         > 65 – 150       55.5 – 150.4	RED
        Very Unhealthy                    201 – 300 > 150 – 250     150.5 – 250.4					PURPLE
        Hazardous                                 301 – 400         > 250 – 350     250.5 – 350.4
        Hazardous                                 401 – 500         > 350 – 500     350.5 – 500

		EPA AQI values
		Good  (0–50,  green)
		Moderate  (51–100,  yellow)
		Unhealthy  for Sensitive  Groups  (101–150,  orange)
		Unhealthy  (151–200,  red)
		Very  Unhealthy  (201–300,  purple)
		Hazardous (301–500, maroon)
	*/

        if (pm > 350.5) {
          return mycalcAQI(pm, 500, 401, 500, 350.5);
        } else if (pm > 250.5) {
          return mycalcAQI(pm, 400, 301, 350.4, 250.5);
        } else if (pm > 150.5) {
          return mycalcAQI(pm, 300, 201, 250.4, 150.5);
        } else if (pm > 55.5) {
          return mycalcAQI(pm, 200, 151, 150.4, 55.5);
        } else if (pm > 35.5) {
          return mycalcAQI(pm, 150, 101, 55.4, 35.5);
        } else if (pm > 12.1) {
          return mycalcAQI(pm, 100, 51, 35.4, 12.1);
        } else if (pm >= 0) {
          return mycalcAQI(pm, 50, 0, 12, 0);
        } else {
//          return  "-" ; //undefined;
        }

}//double myaqiFromPM(double pm)

void displayMain(double pm2_5Double, int curdisplayStatus) {
char pm2_5Str1[20];
char pm2_5Str2[20];
char pm2_5Str3[20];

	digole.clearScreen();

	//Now use onboard and external RGB LED to display pm2_5 value
	if (pm2_5Double <= 50.0) {
		snprintf(pm2_5Str1, sizeof(pm2_5Str1), "AQI  %.1f",pm2_5Double);
		snprintf(pm2_5Str2, sizeof(pm2_5Str2), "%s","GOOD");
		snprintf(pm2_5Str3, sizeof(pm2_5Str3), "%s","");
		status1.setActive(true);
		digole.setTrueColor(0,255,0);
		state = GREEN;
	}
	if ((pm2_5Double >=51.0) && (pm2_5Double <= 100.0)) {
		snprintf(pm2_5Str1, sizeof(pm2_5Str1), "AQI  %.1f",pm2_5Double);
		snprintf(pm2_5Str2, sizeof(pm2_5Str2), "%s","MODERATE");
		snprintf(pm2_5Str3, sizeof(pm2_5Str3), "%s","");
		status2.setActive(true);
		digole.setTrueColor(255,255,0);
		state = YELLOW;
	}
	if ((pm2_5Double >=101) && (pm2_5Double <= 150)) {
		snprintf(pm2_5Str1, sizeof(pm2_5Str1), "AQI  %.1f",pm2_5Double);
		snprintf(pm2_5Str2, sizeof(pm2_5Str2), "%s","UNHEALTHY FOR");
		snprintf(pm2_5Str3, sizeof(pm2_5Str3), "%s","SENSITIVE PEOPLE");
		status3.setActive(true);
		digole.setTrueColor(255,165,0);
		state = ORANGE;
	}
	if ((pm2_5Double >=151)  && ( pm2_5Double <=200) ) {
		snprintf(pm2_5Str1, sizeof(pm2_5Str1), "AQI  %.1f",pm2_5Double);
		snprintf(pm2_5Str2, sizeof(pm2_5Str2), "%s","UNHEALTHY");
		snprintf(pm2_5Str3, sizeof(pm2_5Str3), "%s","");
		status4.setActive(true);
		digole.setTrueColor(255,0,0);
		state = RED;
	}
	if ((pm2_5Double >=201) ) {
		snprintf(pm2_5Str1, sizeof(pm2_5Str1), "AQI  %.1f",pm2_5Double);
		snprintf(pm2_5Str2, sizeof(pm2_5Str2), "%s","VERY UNHEALTHY");
		snprintf(pm2_5Str3, sizeof(pm2_5Str3), "%s"," ");
		status5.setActive(true);
		digole.setTrueColor(255,0,255);
		state = PURPLE;
	}

	snprintf(pm2_5, sizeof(pm2_5), "%s %s %s", pm2_5Str1,
		pm2_5Str2, pm2_5Str3);
	Serial.println(pm2_5);
	Serial.println();

	if ( (curdisplayStatus == dispBOTH) || (curdisplayStatus == dispLCD) ) {
		digole.setFont(51);
		digole.drawStr(0,0,pm2_5Str1);
		digole.setFont(18);
		digole.drawStr(1,2, pm2_5Str2);
		digole.drawStr(1,3, pm2_5Str3);

		int ellipse_x = 40;
		int ellipse_y = 40;

		digole.drawFilledEllipse(80, 93,30,30);//head

		digole.setColor(VGA_WHITE);
		digole.drawFilledEllipse(72, 88, 6,4);//r eye //95
		digole.drawFilledEllipse(92, 88, 6,4);//l eye
		digole.setColor(VGA_BLACK);
		digole.drawFilledEllipse(74,88, 4,2);//r eye
		digole.drawFilledEllipse(94, 88, 4, 2);//l eye

		digole.setColor(VGA_WHITE);
		if (state == GREEN) {
		digole.drawStr(13,4, ">");
		}
		if (state == YELLOW) {
		digole.drawStr(13,5, ">");
		}
		if (state == ORANGE) {
		digole.drawStr(13,6, ">");
		}
		if (state == RED) {
		digole.drawStr(13,7, ">");
		}
		if (state == PURPLE) {
		digole.drawStr(13,8, ">");
		}


		digole.setFont(10);
		digole.drawStr(0,8, sensorDATA.sensorCity);
		digole.drawStr(0,9, sensorDATA.sensorLabel);

		//for mouth expression
		digole.setTrueColor(139,0,0);

		switch (state) {
			case GREEN:	//expression very happy green
				digole.setRotation(2); //same as digole.setRot180();
				digole.drawArc(80,32,20, -60,60,2);
				break;
			case YELLOW: //expression mildy unhappy yellow
				digole.setRotation(2); //same as digole.setRot180();
				digole.drawArc(80,32,20,-15,15,2); //yellow
				break;
			case  ORANGE: //expression unhappy orange
				digole.drawArc(80,130,20,-35,35,2);
				break;
			case RED: //expression more unhappy red
				digole.drawArc(80,130,20,-45,45,2);
				break;
			case PURPLE: //expression even more unhappy purple
				digole.drawArc(80,130,20,-60, 60,2);
				break;
		}//switch

		digole.setRotation(0); //same as digole.undoRotation();
		//display side legend
		digole.setFont(18);
		digole.setTrueColor(0,255,0);
		digole.drawStr(16,4, "0");
		digole.setTrueColor(255,255,0);
		digole.drawStr(15,5, "50");
		digole.setTrueColor(255,165,0);
		digole.drawStr(14,6, "100");
		digole.setTrueColor(255,0,0);
		digole.drawStr(14,7, "150");
		digole.setTrueColor(255,0,255);
		digole.drawStr(14,8, "200");

	}//if ( (curdisplayStatus == dispBOTH) || (curdisplayStatus == dispLCD) )

}//displayMain(double pm2_5Double, int curdisplayStatus)

int wdHandler() {
    System.reset();
    return 1;
}//wdHandler()
// declare a global watchdog instance
ApplicationWatchdog wd(30000, wdHandler, 1536);

void setup() {

	Serial.begin(115200);

    Particle.connect();
    waitFor(Particle.connected, 30000);
    Particle.process();

	if (Particle.connected()) {
		while (millis()-lastTime < 500) {Particle.process();}
		Particle.variable("pm2_5", pm2_5);
		Particle.variable("deviceInfo",gDeviceInfo);
		Particle.variable("conversionType",conversionStr);
		Particle.variable("sensorStr", sensorStr);
		while (millis()-lastTime < 500) {Particle.process();}

		#ifdef ENABLE_STATIC_IP
			uint8_t myFirstAddrByte = myAddress[0];
			uint8_t mySecondAddrByte = myAddress[1];
			uint8_t myThirdAddrByte = myAddress[2];
			uint8_t myLastAddrByte = myAddress[3];
			WiFi.setStaticIP(myAddress, netmask, gateway, dns);
			//use the configured IP
			WiFi.useStaticIP();
		#endif //ENABLE_STATIC_IP

		lastTime = millis();
		while (millis()-lastTime < 500) {Particle.process();}
		bool daylightSavings = IsDST(Time.day(), Time.month(),
			Time.weekday());
		Time.zone(daylightSavings? -7 : -8); //-7 in summer GMT-7 DST; -8 in winter GMT-8 not DST

		lastTime = millis();
		while (millis()-lastTime < 500) {Particle.process();}
		lastResetTime = Time.now();
		lastsyncTime   = Time.now();

		snprintf(IPasStr, sizeof(IPasStr),"%s",
			WiFi.localIP().toString().c_str());

		snprintf(gDeviceInfo, sizeof(gDeviceInfo)
			,"{\"Application\":\"%s\",\"Date\":\"%s\","
			"\"Time\":\"%s\",\"System_firmware\":\"%s\","
			"\"SSID\":\"%s\",\"IP\":\"%s\",\"RSSI\":%i,"
			"\"version\":%i}"
			,__FILENAME__
			,__DATE__
			,(const char*)Time.timeStr()
			,(const char*)System.version() // cast required for String
			,(const char*)WiFi.SSID() // cast not required but always safe when in doubt if String or char*
			,IPasStr
			,(int8_t) WiFi.RSSI()
			,FlashVersion
		);

	} //If (Particle.connected())
	else { //is not cloud connected
		bootedNoCloud = true;
		Particle.disconnect(); //make sure previous attempt to connect cleanly aborted
		lastTime = millis();
		while (millis()-lastTime < 100) { Particle.process();}
    }//else particle cloud not connected

	digole.begin();

	digole.displayConfig(0);
	digole.displayStartScreen(0);
	lastTime = millis();
	while (millis()-lastTime < 500) {Particle.process();}

	Particle.process();
	digole.clearScreen();
	lastTime = millis();
	while (millis()-lastTime < 500) {Particle.process();}
	digole.disableCursor();
	digole.setBackLight(100);

	pinMode(redPin, OUTPUT);
	pinMode(greenPin, OUTPUT);
	pinMode(bluePin, OUTPUT);
	pinMode(selectPin, INPUT_PULLUP);

    request.hostname = "www.purpleair.com";
    request.port = 80;
    snprintf(conditionsRequestPath, sizeof(conditionsRequestPath),
		"/json?show=%d", sensorDATA.sensorID);
    request.path = conditionsRequestPath;

	lastTime = millis();
	while (millis()-lastTime < 500) {Particle.process();}
	lastResetTime = Time.now();
	lastsyncTime   = Time.now();

	//mirror onboard rgb led to external rgb led
	RGB.mirrorTo(redPin, greenPin, bluePin);
	RGB.brightness(rgbBrightness);

	// Setup button timers (all in milliseconds / ms)
    selectBTN.debounceTime   = 20;//30; // Debounce timer in ms
    selectBTN.multiclickTime = 500; // Time limit for multi clicks
    selectBTN.longClickTime  = 1000; //time until "held-down clicks" register

	lastTime = millis();
	while (millis()-lastTime < 500) {Particle.process();}

    Particle.process();

}//setup

void loop()
{

	Particle.process();

	//PET WATCHDOG
	wd.checkin();

    Particle.process();

    Particle.process();

	// CLOUD RECONNECT CODE
	//allows remote & button press response & reconnect (version 0.6.3)
	//Also intended to attempt later cloud connection if booted when
	//particle cloud is not available at initial boot
	//Only tries cloud reconnect every 2 minutes until connected
	unsigned long nowforRetry = millis(); //update for retry cloud connect
	//only retry connect every 1 minute
	if ((nowforRetry - lastTimeRetry) >= ONE_MINUTE_MILLIS) {
		if(!Particle.connected()) {
		    lastTimeRetry = nowforRetry;
			if (!reconnectInProgress) {
				Particle.disconnect();
				lastTime = millis();
				while (millis()-lastTime < 100) { Particle.process();}
				Particle.connect();
				reconnectInProgress = true;
				Particle.process();
				if (Particle.connected) {
					reconnectInProgress = false;
					if (bootedNoCloud) {
						//vars
						while (millis()-lastTime < 500) {Particle.process();}
						Particle.variable("pm2_5", pm2_5);
						Particle.variable("deviceInfo",gDeviceInfo);
						Particle.variable("conversionType",conversionStr);
						Particle.variable("sensorStr", sensorStr);
						while (millis()-lastTime < 500) {Particle.process();}

						#ifdef ENABLE_STATIC_IP
							uint8_t myFirstAddrByte = myAddress[0];
							uint8_t mySecondAddrByte = myAddress[1];
							uint8_t myThirdAddrByte = myAddress[2];
							uint8_t myLastAddrByte = myAddress[3];
							WiFi.setStaticIP(myAddress, netmask, gateway, dns);
							WiFi.useStaticIP();
						#endif //ENABLE_STATIC_IP

						snprintf(IPasStr, sizeof(IPasStr),"%s",
							WiFi.localIP().toString().c_str());
						snprintf(gDeviceInfo, sizeof(gDeviceInfo)
							,"{\"Application\":\"%s\",\"Date\":\"%s\","
							"\"Time\":\"%s\",\"System_firmware\":\"%s\","
							"\"SSID\":\"%s\",\"IP\":\"%s\",\"RSSI\":%i,"
							"\"version\":%i}"
							,__FILENAME__
							,__DATE__
							,(const char*)Time.timeStr()
							// cast required for String
							,(const char*)System.version()
							// cast not required but always safe when
							//in doubt if String or char*
							,(const char*)WiFi.SSID()
							,IPasStr
							,(int8_t) WiFi.RSSI()
							,FlashVersion
						);
						Particle.variable("deviceInfo",gDeviceInfo);
						bootedNoCloud = false;
					}//if (bootedNoCloud)
				}//if (Particle.connected)
			}//if (!reconnectInProgress)
		}//if(!Particle.connected())
	}//if ((nowforRetry - lastTimeRetry) >= ONE_MINUTE_MILLIS)

    Particle.process();

	time_now = millis();

    http.get(request, response, headers);
         Particle.process();
	if (response.status != 200) return; else {
         Particle.process();
		Serial.print("Current Time: ");
		Serial.println(Time.timeStr());

		char thebodyStr[3080];
		response.body.toCharArray(thebodyStr, 3077);

		response.body = "";

		strtok(thebodyStr, ",");  //parse the string at each comma.
		strtok(NULL, ",");
		strtok(NULL, ",");
		strtok(NULL, ",");
		sensorLabel = strtok(NULL, ",");
		strtok(NULL, ",");
		strtok(NULL, ",");
		strtok(NULL, ",");
		strtok(NULL, ",");
		strtok(NULL, ",");
		strtok(NULL, ",");
		strtok(NULL, ",");
		pm2_5ValueStr=strtok(NULL, ",");
		lastseenStr=strtok(NULL,",");

		Serial.print(lastseenStr);
		Serial.print("  ");
		strtok(lastseenStr,":");
		lastseenStr = strtok(NULL,":");
		lastseenInt = atoi(lastseenStr);
		Serial.print(Time.format(lastseenInt, TIME_FORMAT_DEFAULT));
		Serial.println();

		strtok(sensorLabel,":");
		sensorLabel = strtok(NULL,":");

		Serial.println(sensorLabel);

		char abuffer[100];
		int parsed = sscanf(pm2_5ValueStr,
			"\"PM2_5Value\":\"%99[^\"]\",", abuffer);

		snprintf(sensorStr,sizeof(sensorStr)-1, "%s", sensorLabel);

		pm2_5Double = atof(abuffer);

		Serial.print("pm2_5Double b4 conversion ");
		Serial.println(pm2_5Double);
		Serial.println();

		#ifdef conversion_LRAPA
			//LRAPA "correction"
			//0 - 65 µg/m³ range:
			//LRAPA PM2.5 (µg/m³) = 0.5 x PA (PM2.5 CF=ATM) – 0.66
			if (pm2_5Double <=65.0) {
				pm2_5Double	= 0.5 * pm2_5Double - 0.66;
			snprintf(conversionStr,sizeof(conversionStr), "%s", "LRAPA");
			}
		#endif

		#ifdef conversion_AQandU
			//AQandU correction
			//PM2.5 (µg/m³) = 0.778 x PA + 2.65
			if (pm2_5Double <=65.0) {
				pm2_5Double = 0.778 * pm2_5Double + 2.65;
				snprintf(conversionStr,sizeof(conversionStr), "%s",
					"AQandU");
			}
		#endif

		#ifdef conversion_NONE
			snprintf(conversionStr,sizeof(conversionStr), "%s", "NONE");
		#endif

		//Now calc EPA AQI
		pm2_5Double = myaqiFromPM(pm2_5Double);

		Serial.println();
		Serial.print("AQI  ");
		Serial.println(pm2_5Double);
		Serial.print("pm2_5 string = "); Serial.println(pm2_5);

		snprintf(pm2_5, sizeof(pm2_5), "AQI %.1f", pm2_5Double);

		Serial.println(pm2_5);
		Serial.println();

		displayMain(pm2_5Double, curdisplayStatus);

	}//if (response.status != 200) return; else

	while (millis() < time_now + loopInterval) {
		Particle.process();

		//BUTTON STUFF
		selectBTN.Update();
		if (selectBTN.clicks != 0) selectBTNRes = selectBTN.clicks;
		//brief switch to ground toggles select  pin
		//using clickButton library
		if (selectBTNRes ==1) {  //btn just pressed
			if (curdisplayStatus <  3) {curdisplayStatus++;}
				else
				{
					curdisplayStatus = 0;
				}

			Serial.print("curdisplayStatusA = ");
			Serial.println(curdisplayStatus);

			switch (curdisplayStatus) {
				case dispBOTH: //use both displays 0
					RGB.control(false);
					RGB.brightness(rgbBrightness);
					digole.setBackLight(100);
					digole.clearScreen();
					displayMain(pm2_5Double, curdisplayStatus);
					break;
				case dispLCD:	//LCD only   1
					RGB.control(true);
					RGB.brightness(0);
					digole.setBackLight(100);
					digole.clearScreen();
					displayMain(pm2_5Double, curdisplayStatus);
					break;
				case dispLED:	//LED only	2 (default)
					RGB.control(false);
					RGB.brightness(rgbBrightness);
					digole.setBackLight(0);
					digole.clearScreen();
					break;
				case dispNONE:	//NONE	3
					RGB.control(true);
					RGB.brightness(rgbBrightness);
					digole.setBackLight(0);
					digole.clearScreen();
					break;
			}//switch (curdisplayStatus)

			selectBTNRes = 0; // btn press handled

		Serial.print("curdisplayStatusB = ");
		Serial.println(curdisplayStatus);

		}//if (selectBTNRes ==1)

	}//while (millis() < time_now + loopInterval)

	unsigned long nowforSynch = millis(); //update for syncing Time daily
	if ((nowforSynch - lastTime2) >= ONE_DAY_MILLIS) {
		if (Particle.connected()) {
		// Request daily time synchronization from the Particle Cloud
		    lastTime2 = nowforSynch;
		    Particle.syncTime();
		    //??wait 1 second for time syncing
		    lastTime = millis();
		    while ((Particle.syncTimePending()) || (millis()-lastTime < 1000))
				{ Particle.process();}
		    lastsyncTime   = Time.now();
		    lastTime = millis();
		    while (millis()-lastTime < 500) {Particle.process();}
		    bool daylightSavings = IsDST(Time.day(), Time.month(), Time.weekday());
		    //NorCal -7 in summer GMT-7 DST; -8 in winter GMT-8 not DST (PDT)
    		Time.zone(daylightSavings? -7 : -8);
		}//if ((Particle.connected())
    }//if ((nowforSynch - lastTime2) >= ONE_DAY_MILLIS)

}//loop
	//Spurpleair.ino - code to display pm2_5 air concentration
	//as reported by one selected purpleair community sensor
	//Would be nice if possible to average over several sensors and also
	//if use of Strings could be eliminated in HttpClient library
	#include <Particle.h>
	#include <clickButton.h>
	#include <HttpClient.h>
	#include <sampledata.h>
	#include <math.h>

	//#define _Digole_Serial_UART_
	#define _Digole_Serial_SPI_
	#include <DigoleGeo.h>

	int FlashVersion = 5;

	/******************/
	SYSTEM_MODE(MANUAL);

	volatile bool reconnectInProgress = false;
	volatile bool bootedNoCloud = false;

	//for cloud connect retry
	unsigned long lastTimeRetry = 0;
	#define TWO_MINUTE_MILLIS (2 * 60 * 1000)
	#define ONE_MINUTE_MILLIS (1 * 60 * 1000)

	unsigned long lastTime = 0;
	unsigned long lastTime2 = 0;
	unsigned long time_now = 0;
	//for resyncing Time
	#define ONE_DAY_MILLIS (24 * 60 * 60 * 1000)
	volatile int lastsyncTime = 0;
	volatile int lastResetTime = 0;

	enum displayStatus{dispBOTH,dispLCD,dispLED,dispNONE};

	HttpClient http;
	http_header_t headers[] = {
	{"Content-Type, application/json"},
	{ "User-agent", "www.purpleair.com HttpClient"},
	{ NULL, NULL }
	};
	http_request_t request;
	http_response_t response;
	char conditionsRequestPath[20];

	/********SET THESE VARIABLES***************************************/
	int loopInterval = 120000;//reports every 2 minutes, please increase after debug

	struct sensorInfo { int sensorID = <XXXXX>; char sensorCity[8] = <"7charname">; char sensorLabel[8] = <"7charname>">;};

	//easiest way I found to get the id is to click on the sensor
	//of interest on the purpleair.com map, then note the 5 digit number
	//after &select= in the resulting browser address bar
	//Note: To obtain data from multiple sensors, use
	//http://www.purpleair.com/json?show=<sensorID>\|<sensorID>\|<sensorID>\|...

	/*uncomment define below if static wifi address desired and set in setup()*/
	//#define ENABLE_STATIC_IP
	IPAddress myAddress(192,168,1,11);//change as needed
	IPAddress netmask(255,255,255,0);
	IPAddress gateway(192,168,1,1);
	IPAddress dns(192,168,1,1);
	char IPasStr[16];

	//NOTE: one digole Serial Color OLED 160 X 120 1.8" V1 seems more stable at
	//5v Photon VIN than at 3.3v from Photon, although another identical
	//display doesn't seem to mind 3.3v
	//PHOTON digole(A3, A5, A2) (CLK,DATA,SS)
	DigoleSerialDisp digole(A3, A5, A2); //Hardware SPI setup

	//uncomment one define below NONE, LRAPA, or AQandU
	//#define conversion_NONE
	#define conversion_LRAPA
	//#define conversion_AQandU

	//set as 0,1,2,or 3 for startup display desired
	//dispBOTH,dispLCD,dispLED,dispNONE
	int curdisplayStatus = 2; //startup LED display only
	/********************************************************************/

	char conversionStr[7];
	sensorInfo sensorDATA;
	char *sensorLabel;
	char sensorStr[40];
	char *pm2_5ValueStr;
	char *lastseenStr;
	int lastseenInt;
	double pm2_5Double;
	char pm2_5[60] = "AQI not yet calculated";

	int rgbBrightness = 25;

	enum aqiStatus{GREEN,YELLOW,ORANGE,RED,PURPLE};
	int state;

	// below makes source filename accesible programmatically
	#define __FILENAME__ (strrchr(__FILE__, '/') ? strrchr(__FILE__, '/') + 1 : __FILE__)

	char gDeviceInfo[240];

	#define redPin D2
	#define greenPin D3
	#define bluePin D4
	#define selectPin D6

	//Colours defined as 8-bit value RRRG GGBB
	#define VGA_BLACK 0x00
	#define VGA_WHITE 0x01
	#define VGA_BLUE 0x03
	#define VGA_DARKRED 0x44
	#define VGA_PURPLE 0x61

	#define VGA_RED 0x60
	#define VGA_GREEN 0x1C
	#define VGA_LIME 0x14
	#define VGA_YELLOW 0xFC

	#define VGA_ORANGE 0xCC

	ClickButton selectBTN(selectPin, LOW);
	int selectBTNRes = 0;

	int max_x, max_y;

	#define myOrange 0x00ff3c00 //to distinguish better from yellow
	LEDStatus status1(RGB_COLOR_GREEN, LED_PATTERN_FADE, 4000 /* 1 second */, LED_PRIORITY_IMPORTANT);
	LEDStatus status2(RGB_COLOR_YELLOW, LED_PATTERN_FADE, 3000 /* 1 second */, LED_PRIORITY_IMPORTANT);
	LEDStatus status3(myOrange, LED_PATTERN_FADE, 2000 /* 1 second */, LED_PRIORITY_IMPORTANT);
	LEDStatus status4(RGB_COLOR_RED, LED_PATTERN_FADE, 300 /* 1 second */, LED_PRIORITY_IMPORTANT);
	LEDStatus status5(RGB_COLOR_MAGENTA, LED_PATTERN_FADE, 100 /* 1 second */, LED_PRIORITY_IMPORTANT);

	//USAGE: bool daylightSavings = IsDST(Time.day(), Time.month(), Time.weekday());
	// Time.zone(daylightSavings? -7 : -8); //-7 in summer GMT-7 DST; -8 in winter GMT-8 and is PST not DST
	bool IsDST(int dayOfMonth, int month, int dayOfWeek) {
	// from @BulldogLowell on Particle forum
	if (month < 3 \|\| month > 11) {
	return false;
	}
	if (month > 3 && month < 11) {
	return true;
	}
	int previousSunday = dayOfMonth - (dayOfWeek - 1);
	if (month == 3) {
	return previousSunday >= 8;
	}
	return previousSunday <= 0;
	}//bool IsDST(int dayOfMonth, int month, int dayOfWeek)

	//Below two functions from:
	//https://docs.google.com/document/d/15ijz94dXJ-YAZLi9iZ_RaBwrZ4KtYeCy08goGBwnbCU/edit#
	double mycalcAQI(double Cp, double Ih, double Il, double BPh, double BPl) {

	double a = (Ih - Il);
	double b = (BPh - BPl);
	double c = (Cp - BPl);
	return round((a/b) * c + Il);
	}

	double myaqiFromPM(double pm) {

	/*
	Good 0 - 50 0.0 - 15.0 0.0 – 12.0 GREEN
	Moderate 51 - 100 >15.0 - 40 12.1 – 35.4 YELLOW
	Unhealthy for Sensitive Groups 101 – 150 >40 – 65 35.5 – 55.4 ORANGE
	Unhealthy 151 – 200 > 65 – 150 55.5 – 150.4 RED
	Very Unhealthy 201 – 300 > 150 – 250 150.5 – 250.4 PURPLE
	Hazardous 301 – 400 > 250 – 350 250.5 – 350.4
	Hazardous 401 – 500 > 350 – 500 350.5 – 500

	EPA AQI values
	Good (0–50, green)
	Moderate (51–100, yellow)
	Unhealthy for Sensitive Groups (101–150, orange)
	Unhealthy (151–200, red)
	Very Unhealthy (201–300, purple)
	Hazardous (301–500, maroon)
	*/

	if (pm > 350.5) {
	return mycalcAQI(pm, 500, 401, 500, 350.5);
	} else if (pm > 250.5) {
	return mycalcAQI(pm, 400, 301, 350.4, 250.5);
	} else if (pm > 150.5) {
	return mycalcAQI(pm, 300, 201, 250.4, 150.5);
	} else if (pm > 55.5) {
	return mycalcAQI(pm, 200, 151, 150.4, 55.5);
	} else if (pm > 35.5) {
	return mycalcAQI(pm, 150, 101, 55.4, 35.5);
	} else if (pm > 12.1) {
	return mycalcAQI(pm, 100, 51, 35.4, 12.1);
	} else if (pm >= 0) {
	return mycalcAQI(pm, 50, 0, 12, 0);
	} else {
	// return "-" ; //undefined;
	}

	}//double myaqiFromPM(double pm)

	void displayMain(double pm2_5Double, int curdisplayStatus) {
	char pm2_5Str1[20];
	char pm2_5Str2[20];
	char pm2_5Str3[20];

	digole.clearScreen();

	//Now use onboard and external RGB LED to display pm2_5 value
	if (pm2_5Double <= 50.0) {
	snprintf(pm2_5Str1, sizeof(pm2_5Str1), "AQI %.1f",pm2_5Double);
	snprintf(pm2_5Str2, sizeof(pm2_5Str2), "%s","GOOD");
	snprintf(pm2_5Str3, sizeof(pm2_5Str3), "%s","");
	status1.setActive(true);
	digole.setTrueColor(0,255,0);
	state = GREEN;
	}
	if ((pm2_5Double >=51.0) && (pm2_5Double <= 100.0)) {
	snprintf(pm2_5Str1, sizeof(pm2_5Str1), "AQI %.1f",pm2_5Double);
	snprintf(pm2_5Str2, sizeof(pm2_5Str2), "%s","MODERATE");
	snprintf(pm2_5Str3, sizeof(pm2_5Str3), "%s","");
	status2.setActive(true);
	digole.setTrueColor(255,255,0);
	state = YELLOW;
	}
	if ((pm2_5Double >=101) && (pm2_5Double <= 150)) {
	snprintf(pm2_5Str1, sizeof(pm2_5Str1), "AQI %.1f",pm2_5Double);
	snprintf(pm2_5Str2, sizeof(pm2_5Str2), "%s","UNHEALTHY FOR");
	snprintf(pm2_5Str3, sizeof(pm2_5Str3), "%s","SENSITIVE PEOPLE");
	status3.setActive(true);
	digole.setTrueColor(255,165,0);
	state = ORANGE;
	}
	if ((pm2_5Double >=151) && ( pm2_5Double <=200) ) {
	snprintf(pm2_5Str1, sizeof(pm2_5Str1), "AQI %.1f",pm2_5Double);
	snprintf(pm2_5Str2, sizeof(pm2_5Str2), "%s","UNHEALTHY");
	snprintf(pm2_5Str3, sizeof(pm2_5Str3), "%s","");
	status4.setActive(true);
	digole.setTrueColor(255,0,0);
	state = RED;
	}
	if ((pm2_5Double >=201) ) {
	snprintf(pm2_5Str1, sizeof(pm2_5Str1), "AQI %.1f",pm2_5Double);
	snprintf(pm2_5Str2, sizeof(pm2_5Str2), "%s","VERY UNHEALTHY");
	snprintf(pm2_5Str3, sizeof(pm2_5Str3), "%s"," ");
	status5.setActive(true);
	digole.setTrueColor(255,0,255);
	state = PURPLE;
	}

	snprintf(pm2_5, sizeof(pm2_5), "%s %s %s", pm2_5Str1,
	pm2_5Str2, pm2_5Str3);
	Serial.println(pm2_5);
	Serial.println();

	if ( (curdisplayStatus == dispBOTH) \|\| (curdisplayStatus == dispLCD) ) {
	digole.setFont(51);
	digole.drawStr(0,0,pm2_5Str1);
	digole.setFont(18);
	digole.drawStr(1,2, pm2_5Str2);
	digole.drawStr(1,3, pm2_5Str3);

	int ellipse_x = 40;
	int ellipse_y = 40;

	digole.drawFilledEllipse(80, 93,30,30);//head

	digole.setColor(VGA_WHITE);
	digole.drawFilledEllipse(72, 88, 6,4);//r eye //95
	digole.drawFilledEllipse(92, 88, 6,4);//l eye
	digole.setColor(VGA_BLACK);
	digole.drawFilledEllipse(74,88, 4,2);//r eye
	digole.drawFilledEllipse(94, 88, 4, 2);//l eye

	digole.setColor(VGA_WHITE);
	if (state == GREEN) {
	digole.drawStr(13,4, ">");
	}
	if (state == YELLOW) {
	digole.drawStr(13,5, ">");
	}
	if (state == ORANGE) {
	digole.drawStr(13,6, ">");
	}
	if (state == RED) {
	digole.drawStr(13,7, ">");
	}
	if (state == PURPLE) {
	digole.drawStr(13,8, ">");
	}


	digole.setFont(10);
	digole.drawStr(0,8, sensorDATA.sensorCity);
	digole.drawStr(0,9, sensorDATA.sensorLabel);

	//for mouth expression
	digole.setTrueColor(139,0,0);

	switch (state) {
	case GREEN: //expression very happy green
	digole.setRotation(2); //same as digole.setRot180();
	digole.drawArc(80,32,20, -60,60,2);
	break;
	case YELLOW: //expression mildy unhappy yellow
	digole.setRotation(2); //same as digole.setRot180();
	digole.drawArc(80,32,20,-15,15,2); //yellow
	break;
	case ORANGE: //expression unhappy orange
	digole.drawArc(80,130,20,-35,35,2);
	break;
	case RED: //expression more unhappy red
	digole.drawArc(80,130,20,-45,45,2);
	break;
	case PURPLE: //expression even more unhappy purple
	digole.drawArc(80,130,20,-60, 60,2);
	break;
	}//switch

	digole.setRotation(0); //same as digole.undoRotation();
	//display side legend
	digole.setFont(18);
	digole.setTrueColor(0,255,0);
	digole.drawStr(16,4, "0");
	digole.setTrueColor(255,255,0);
	digole.drawStr(15,5, "50");
	digole.setTrueColor(255,165,0);
	digole.drawStr(14,6, "100");
	digole.setTrueColor(255,0,0);
	digole.drawStr(14,7, "150");
	digole.setTrueColor(255,0,255);
	digole.drawStr(14,8, "200");

	}//if ( (curdisplayStatus == dispBOTH) \|\| (curdisplayStatus == dispLCD) )

	}//displayMain(double pm2_5Double, int curdisplayStatus)

	int wdHandler() {
	System.reset();
	return 1;
	}//wdHandler()
	// declare a global watchdog instance
	ApplicationWatchdog wd(30000, wdHandler, 1536);

	void setup() {

	Serial.begin(115200);

	Particle.connect();
	waitFor(Particle.connected, 30000);
	Particle.process();

	if (Particle.connected()) {
	while (millis()-lastTime < 500) {Particle.process();}
	Particle.variable("pm2_5", pm2_5);
	Particle.variable("deviceInfo",gDeviceInfo);
	Particle.variable("conversionType",conversionStr);
	Particle.variable("sensorStr", sensorStr);
	while (millis()-lastTime < 500) {Particle.process();}

	#ifdef ENABLE_STATIC_IP
	uint8_t myFirstAddrByte = myAddress[0];
	uint8_t mySecondAddrByte = myAddress[1];
	uint8_t myThirdAddrByte = myAddress[2];
	uint8_t myLastAddrByte = myAddress[3];
	WiFi.setStaticIP(myAddress, netmask, gateway, dns);
	//use the configured IP
	WiFi.useStaticIP();
	#endif //ENABLE_STATIC_IP

	lastTime = millis();
	while (millis()-lastTime < 500) {Particle.process();}
	bool daylightSavings = IsDST(Time.day(), Time.month(),
	Time.weekday());
	Time.zone(daylightSavings? -7 : -8); //-7 in summer GMT-7 DST; -8 in winter GMT-8 not DST

	lastTime = millis();
	while (millis()-lastTime < 500) {Particle.process();}
	lastResetTime = Time.now();
	lastsyncTime = Time.now();

	snprintf(IPasStr, sizeof(IPasStr),"%s",
	WiFi.localIP().toString().c_str());

	snprintf(gDeviceInfo, sizeof(gDeviceInfo)
	,"{\"Application\":\"%s\",\"Date\":\"%s\","
	"\"Time\":\"%s\",\"System_firmware\":\"%s\","
	"\"SSID\":\"%s\",\"IP\":\"%s\",\"RSSI\":%i,"
	"\"version\":%i}"
	,__FILENAME__
	,__DATE__
	,(const char*)Time.timeStr()
	,(const char*)System.version() // cast required for String
	,(const char)WiFi.SSID() // cast not required but always safe when in doubt if String or char
	,IPasStr
	,(int8_t) WiFi.RSSI()
	,FlashVersion
	);

	} //If (Particle.connected())
	else { //is not cloud connected
	bootedNoCloud = true;
	Particle.disconnect(); //make sure previous attempt to connect cleanly aborted
	lastTime = millis();
	while (millis()-lastTime < 100) { Particle.process();}
	}//else particle cloud not connected

	digole.begin();

	digole.displayConfig(0);
	digole.displayStartScreen(0);
	lastTime = millis();
	while (millis()-lastTime < 500) {Particle.process();}

	Particle.process();
	digole.clearScreen();
	lastTime = millis();
	while (millis()-lastTime < 500) {Particle.process();}
	digole.disableCursor();
	digole.setBackLight(100);

	pinMode(redPin, OUTPUT);
	pinMode(greenPin, OUTPUT);
	pinMode(bluePin, OUTPUT);
	pinMode(selectPin, INPUT_PULLUP);

	request.hostname = "www.purpleair.com";
	request.port = 80;
	snprintf(conditionsRequestPath, sizeof(conditionsRequestPath),
	"/json?show=%d", sensorDATA.sensorID);
	request.path = conditionsRequestPath;

	lastTime = millis();
	while (millis()-lastTime < 500) {Particle.process();}
	lastResetTime = Time.now();
	lastsyncTime = Time.now();

	//mirror onboard rgb led to external rgb led
	RGB.mirrorTo(redPin, greenPin, bluePin);
	RGB.brightness(rgbBrightness);

	// Setup button timers (all in milliseconds / ms)
	selectBTN.debounceTime = 20;//30; // Debounce timer in ms
	selectBTN.multiclickTime = 500; // Time limit for multi clicks
	selectBTN.longClickTime = 1000; //time until "held-down clicks" register

	lastTime = millis();
	while (millis()-lastTime < 500) {Particle.process();}

	Particle.process();

	}//setup

	void loop()
	{

	Particle.process();

	//PET WATCHDOG
	wd.checkin();

	Particle.process();

	Particle.process();

	// CLOUD RECONNECT CODE
	//allows remote & button press response & reconnect (version 0.6.3)
	//Also intended to attempt later cloud connection if booted when
	//particle cloud is not available at initial boot
	//Only tries cloud reconnect every 2 minutes until connected
	unsigned long nowforRetry = millis(); //update for retry cloud connect
	//only retry connect every 1 minute
	if ((nowforRetry - lastTimeRetry) >= ONE_MINUTE_MILLIS) {
	if(!Particle.connected()) {
	lastTimeRetry = nowforRetry;
	if (!reconnectInProgress) {
	Particle.disconnect();
	lastTime = millis();
	while (millis()-lastTime < 100) { Particle.process();}
	Particle.connect();
	reconnectInProgress = true;
	Particle.process();
	if (Particle.connected) {
	reconnectInProgress = false;
	if (bootedNoCloud) {
	//vars
	while (millis()-lastTime < 500) {Particle.process();}
	Particle.variable("pm2_5", pm2_5);
	Particle.variable("deviceInfo",gDeviceInfo);
	Particle.variable("conversionType",conversionStr);
	Particle.variable("sensorStr", sensorStr);
	while (millis()-lastTime < 500) {Particle.process();}

	#ifdef ENABLE_STATIC_IP
	uint8_t myFirstAddrByte = myAddress[0];
	uint8_t mySecondAddrByte = myAddress[1];
	uint8_t myThirdAddrByte = myAddress[2];
	uint8_t myLastAddrByte = myAddress[3];
	WiFi.setStaticIP(myAddress, netmask, gateway, dns);
	WiFi.useStaticIP();
	#endif //ENABLE_STATIC_IP

	snprintf(IPasStr, sizeof(IPasStr),"%s",
	WiFi.localIP().toString().c_str());
	snprintf(gDeviceInfo, sizeof(gDeviceInfo)
	,"{\"Application\":\"%s\",\"Date\":\"%s\","
	"\"Time\":\"%s\",\"System_firmware\":\"%s\","
	"\"SSID\":\"%s\",\"IP\":\"%s\",\"RSSI\":%i,"
	"\"version\":%i}"
	,__FILENAME__
	,__DATE__
	,(const char*)Time.timeStr()
	// cast required for String
	,(const char*)System.version()
	// cast not required but always safe when
	//in doubt if String or char*
	,(const char*)WiFi.SSID()
	,IPasStr
	,(int8_t) WiFi.RSSI()
	,FlashVersion
	);
	Particle.variable("deviceInfo",gDeviceInfo);
	bootedNoCloud = false;
	}//if (bootedNoCloud)
	}//if (Particle.connected)
	}//if (!reconnectInProgress)
	}//if(!Particle.connected())
	}//if ((nowforRetry - lastTimeRetry) >= ONE_MINUTE_MILLIS)

	Particle.process();

	time_now = millis();

	http.get(request, response, headers);
	Particle.process();
	if (response.status != 200) return; else {
	Particle.process();
	Serial.print("Current Time: ");
	Serial.println(Time.timeStr());

	char thebodyStr[3080];
	response.body.toCharArray(thebodyStr, 3077);

	response.body = "";

	strtok(thebodyStr, ","); //parse the string at each comma.
	strtok(NULL, ",");
	strtok(NULL, ",");
	strtok(NULL, ",");
	sensorLabel = strtok(NULL, ",");
	strtok(NULL, ",");
	strtok(NULL, ",");
	strtok(NULL, ",");
	strtok(NULL, ",");
	strtok(NULL, ",");
	strtok(NULL, ",");
	strtok(NULL, ",");
	pm2_5ValueStr=strtok(NULL, ",");
	lastseenStr=strtok(NULL,",");

	Serial.print(lastseenStr);
	Serial.print(" ");
	strtok(lastseenStr,":");
	lastseenStr = strtok(NULL,":");
	lastseenInt = atoi(lastseenStr);
	Serial.print(Time.format(lastseenInt, TIME_FORMAT_DEFAULT));
	Serial.println();

	strtok(sensorLabel,":");
	sensorLabel = strtok(NULL,":");

	Serial.println(sensorLabel);

	char abuffer[100];
	int parsed = sscanf(pm2_5ValueStr,
	"\"PM2_5Value\":\"%99[^\"]\",", abuffer);

	snprintf(sensorStr,sizeof(sensorStr)-1, "%s", sensorLabel);

	pm2_5Double = atof(abuffer);

	Serial.print("pm2_5Double b4 conversion ");
	Serial.println(pm2_5Double);
	Serial.println();

	#ifdef conversion_LRAPA
	//LRAPA "correction"
	//0 - 65 µg/m³ range:
	//LRAPA PM2.5 (µg/m³) = 0.5 x PA (PM2.5 CF=ATM) – 0.66
	if (pm2_5Double <=65.0) {
	pm2_5Double = 0.5 * pm2_5Double - 0.66;
	snprintf(conversionStr,sizeof(conversionStr), "%s", "LRAPA");
	}
	#endif

	#ifdef conversion_AQandU
	//AQandU correction
	//PM2.5 (µg/m³) = 0.778 x PA + 2.65
	if (pm2_5Double <=65.0) {
	pm2_5Double = 0.778 * pm2_5Double + 2.65;
	snprintf(conversionStr,sizeof(conversionStr), "%s",
	"AQandU");
	}
	#endif

	#ifdef conversion_NONE
	snprintf(conversionStr,sizeof(conversionStr), "%s", "NONE");
	#endif

	//Now calc EPA AQI
	pm2_5Double = myaqiFromPM(pm2_5Double);

	Serial.println();
	Serial.print("AQI ");
	Serial.println(pm2_5Double);
	Serial.print("pm2_5 string = "); Serial.println(pm2_5);

	snprintf(pm2_5, sizeof(pm2_5), "AQI %.1f", pm2_5Double);

	Serial.println(pm2_5);
	Serial.println();

	displayMain(pm2_5Double, curdisplayStatus);

	}//if (response.status != 200) return; else

	while (millis() < time_now + loopInterval) {
	Particle.process();

	//BUTTON STUFF
	selectBTN.Update();
	if (selectBTN.clicks != 0) selectBTNRes = selectBTN.clicks;
	//brief switch to ground toggles select pin
	//using clickButton library
	if (selectBTNRes ==1) { //btn just pressed
	if (curdisplayStatus < 3) {curdisplayStatus++;}
	else
	{
	curdisplayStatus = 0;
	}

	Serial.print("curdisplayStatusA = ");
	Serial.println(curdisplayStatus);

	switch (curdisplayStatus) {
	case dispBOTH: //use both displays 0
	RGB.control(false);
	RGB.brightness(rgbBrightness);
	digole.setBackLight(100);
	digole.clearScreen();
	displayMain(pm2_5Double, curdisplayStatus);
	break;
	case dispLCD: //LCD only 1
	RGB.control(true);
	RGB.brightness(0);
	digole.setBackLight(100);
	digole.clearScreen();
	displayMain(pm2_5Double, curdisplayStatus);
	break;
	case dispLED: //LED only 2 (default)
	RGB.control(false);
	RGB.brightness(rgbBrightness);
	digole.setBackLight(0);
	digole.clearScreen();
	break;
	case dispNONE: //NONE 3
	RGB.control(true);
	RGB.brightness(rgbBrightness);
	digole.setBackLight(0);
	digole.clearScreen();
	break;
	}//switch (curdisplayStatus)

	selectBTNRes = 0; // btn press handled

	Serial.print("curdisplayStatusB = ");
	Serial.println(curdisplayStatus);

	}//if (selectBTNRes ==1)

	}//while (millis() < time_now + loopInterval)

	unsigned long nowforSynch = millis(); //update for syncing Time daily
	if ((nowforSynch - lastTime2) >= ONE_DAY_MILLIS) {
	if (Particle.connected()) {
	// Request daily time synchronization from the Particle Cloud
	lastTime2 = nowforSynch;
	Particle.syncTime();
	//??wait 1 second for time syncing
	lastTime = millis();
	while ((Particle.syncTimePending()) \|\| (millis()-lastTime < 1000))
	{ Particle.process();}
	lastsyncTime = Time.now();
	lastTime = millis();
	while (millis()-lastTime < 500) {Particle.process();}
	bool daylightSavings = IsDST(Time.day(), Time.month(), Time.weekday());
	//NorCal -7 in summer GMT-7 DST; -8 in winter GMT-8 not DST (PDT)
	Time.zone(daylightSavings? -7 : -8);
	}//if ((Particle.connected())
	}//if ((nowforSynch - lastTime2) >= ONE_DAY_MILLIS)

	}//loop