EPD32.ino

// TODO 
// TODO consider clock reset from pin, make sure timer makes sense (doesn't currently)
// TODO remove FREERTOS thing and try swapping cores, does it save time?
// TODO detect wrong password? explicitly inform user
// TODO have way to update firmware?
// TODO verify webpage input e.g. empty wifi name
// TODO ULP bitbang drive SPI to update screen in ULP???
// TODO display current detected location in webserver, allow custom location setting
// TODO test on Open WiFi... test on very secure wifi?
// TODO sometimes i compile to 441kB, sometimes i compile to 950kB???
// TODO read espressif docs on sleep and power etc
// visualmicro debugging ?

/*
    Pins 1 and 3 are REPL UART TX and RX respectively
    Pins 6, 7, 8, 11, 16, and 17 are used for connecting the embedded flash, and are not recommended for other uses
    Pins 34-39 are input only, and also do not have internal pull-up resistors
    The pull value of some pins can be set to Pin.PULL_HOLD to reduce power consumption during deepsleep.
*/

#include <SPI.h>
#include <Adafruit_GFX.h>
#include <gfxfont.h>
/* include any other fonts you want to use https://github.com/adafruit/Adafruit-GFX-Library */
#include <Fonts/FreeSans9pt7b.h>
#include <Fonts/FreeSans12pt7b.h>
//#include <Fonts/FreeMonoBold12pt7b.h>
// TODO make your own fonts here: http://oleddisplay.squix.ch/
//#include "Icon2.h"
#define ESP32
#include <GxEPD2_BW.h>

#include <WiFi.h>
#include <WiFiClient.h>
#include <WiFiClientSecure.h>
#include <WiFiAP.h>

#include <FS.h>
#include <WebServer.h>
#include <ESPmDNS.h>
#include <DNSServer.h>
#include <HTTPClient.h>

//#define ARDUINOJSON_DECODE_UNICODE 1
#include <ArduinoJson.hpp>

#include <Preferences.h>
#include "esp32/ulp.h"
#include <time.h>
#include <sys/time.h>
#include <TimeLib.h>
#include <rom/rtc.h>

#define pp Serial.println

#include "atmo_types.h"
#include "atmo_spline.h"
#include "atmo_gfx.h"
#include "atmo_sleep.h"
#include "atmo_wifi.h"
#include "atmo_webserver.h"
#include "atmo_webrequests.h"

#define MAIN_CORE 1
#define BACKGROUND_CORE 0
#include "Icon2.h"
int wifisection, displaysection;
unsigned long lastConnectionTime = 0;          // Last time you connected to the server, in milliseconds



// TODO andymule FOR RELEASE BUILD Disabling all logging and holding the UART disable pin high only increases boot time by around 20 ms?
void setup() {
	wifisection = millis();

	//struct timeval wakeTime;
	//gettimeofday(&wakeTime, NULL);
	//int sleep_time_ms = (wakeTime.tv_sec - sleep_enter_time.tv_sec) * 1000 + (wakeTime.tv_usec - sleep_enter_time.tv_usec) / 1000;
	Serial.begin(115200);
	//verbose_print_reset_reason(rtc_get_reset_reason(1));

	//Serial.print("Time spent in deep sleep : ");
	//Serial.print(sleep_time_ms);
	//Serial.println(" ms");

	// SPI override pins for Lilygo T5 v2.2
	//MISO = 2;
	//MOSI = 23;
	//SCK = 18;
	SPI.begin(18, 2, 23, SS);

	//gfx.init();
	gfx.init(115200, false);
	gfx.setRotation(3);
	//gfx.firstPage();
	//MakePatterns();	// fill our gfx patterns into RAM
	Prefs.begin("settings");

	//int rotater = 0;
	//while (true) // andy GFX demo
	//{
	//	gfx.setRotation(rotater);
	//	rotater += 1;
	//	rotater %= 4;
	//	//DrawSpecksUnderSpline();
	//	gfx.fillScreen(GxEPD_WHITE);
	//	DrawPattern(PatternSparseDots, gfx.height()/4*3);
	//	delay(2000);
	//	DrawPatternUnderSpline(PatternZigZagH);
	//	delay(2000);
	//	DrawSplines();
	//	delay(2000);
	//	DrawSpecks();
	//	delay(2000);
	//	DrawSpecksUnderSpline();
	//	delay(2000);
	//	DrawFont(font12);
	//	delay(2000);
	//	DrawFont(font9);
	//	delay(2000);
	//}
	//AtmoDeepSleep();
	//DrawLines();
	//gfx.drawPicture(Icon1, sizeof(Icon1));
	//gfx.drawBitmap(gImage_Icon2, sizeof(gImage_Icon2), gfx.bm_default);
	WakeReason reason = CheckResetReasonAndClearScreenIfNeeded();
	if (reason==WakeReason::EnterSettings || Prefs.getString(PREF_SSID_STRING) == "")
	{
		pp("running atmo because:");
		pp(reason);
		pp("saved ssid:" + Prefs.getString(PREF_SSID_STRING));
		DrawConnectionInstructions();
		HostWebsiteForInit();
		return;	// go straight to webserver setup loop, skip rest of init
	}
	
	// TODO is this running in the background of Lilygo?
	pp("core 1?");
	pp(xPortGetCoreID());
	xTaskCreatePinnedToCore(StartWiFi, "StartWiFi", 2048, 0, 1, WiFiTask, BACKGROUND_CORE); // start wifi on other core // TODO Move earlier but dont start if i host the server

	//gfx.setPartialWindow(0, 0, gfx.width(), gfx.height());
	DrawUpdating();
	
	lastConnectionTime = millis();
	//if (!Prefs.getBool(PREF_VALID_BOOL))	// if cache is invalidated, lets get our location again
	{
		GetGeolocationFromNet();
	}
	pp("getting weather data 1");
	int weatherHttpCode = RequestWeatherData();
	StopWiFi(); // stop wifi and reduces power consumption
	pp("gunna parse it");
	if (weatherHttpCode == 200)
	{
		ParseWeatherAndTime(); // Remove this passed variable?
	}
	else if (weatherHttpCode != 200) {
		DrawFailedToConnectToSite();
		AtmoDeepSleep();
	}
	wifisection = millis() - wifisection;
	displaysection = millis();
	pp("gunna draw it");
	if (weatherHttpCode == 200) {
		DrawWeather();
	}
	displaysection = millis() - displaysection;
	Serial.println("Wifi took:	 " + String(wifisection / 1000.0) + " secs");
	Serial.println("Display took:" + String(displaysection / 1000.0) + " secs");
	AtmoDeepSleep();
}