Working 3 day temperature forecast

darksky.py

@@ -0,0 +1,59 @@
+#!/usr/bin/env python3
+
+#
+# Pulls out only the required pieces for the esp_time.ino arduino program
+# the ESP8266 doesn't have enough RAM to parse the whole JSON object.
+# substitue in api_key, run this and place the output at a web server
+# adjust ds_url in esp_time.ino to point at that web server!
+
+import json
+import urllib.request
+
+ds_url = "https://api.darksky.net/forecast/";
+ds_ll = "/-35.135,149.61";
+ds_opts = "?units=auto"
+
+api_key = "PUT YOUR API KEY HERE"
+
+contents = urllib.request.urlopen(ds_url + api_key + ds_ll + ds_opts)
+
+d = json.load(contents)
+
+new = {}
+current = d['currently']
+today = d['daily']['data'][0]
+tomorrow = d['daily']['data'][1]
+day_after = d['daily']['data'][2]
+
+new['current'] = {}
+new['current']['temp'] = current['temperature']
+new['current']['icon'] = current['icon']
+new['today'] = {}
+new['today']['max'] = today['temperatureMax']
+new['today']['icon'] = today['icon']
+new['tomorrow'] = {}
+new['tomorrow']['max'] = tomorrow['temperatureMax']
+new['tomorrow']['icon'] = tomorrow['icon']
+new['day_after'] = {}
+new['day_after']['max'] = day_after['temperatureMax']
+new['day_after']['icon'] = day_after['icon']
+
+
+with open('darksky.json', 'w') as output:
+    output.write(json.dumps(new))
+    output.close()
+
+
+
+
+    # OWM
+    # for forecast in d['list']:
+    #     utcDate = datetime.datetime.strptime(forecast['dt_txt']+"+0000", "%Y-%m-%d %H:%M:%S%z")
+
+    #     utcDate.replace(tzinfo=UTC)
+
+    #     print("********")
+    #     print(utcDate)
+    #     print(utcDate.astimezone(local))
+    #     print(forecast['weather'][0]['description'], forecast['weather'][0]['icon'], forecast['main']['temp'])
+            

esp_time.ino

@@ -8,10 +8,12 @@
 #include <WiFiUdp.h>
 #include <NTPClient.h>
 #include <Timezone.h>
+#include <ArduinoJson.h>
 
 #include "epd.h"
 #include "credential.h"
 
+
 // Weather bits
 
 // Australian BOM bits, Belconnen is mine.
@@ -20,10 +22,13 @@
 //const char* bom_url = "ftp://ftp.bom.gov.au/anon/gen/fwo/IDN11060.xml";
 
 // openweathermap, api_key from credential.h
-//
+// const String owm_url = "http://api.openweathermap.org/data/2.5/weather?q=Belconnen,AU&units=metric&APPID=";
-// Maybe try String types?
-const String owm_url = "http://api.openweathermap.org/data/2.5/weather?q=Belconnen,AU&APPID=";
 
+// DarkSky  API key from credential.h
+// substitute decimal latitude and longitude in ds_ll
+const String ds_url = "http://pwarren.id.au/darksky/darksky.json";  
+
+bool ds_done = false;
 
 // Timezone bits
 
@@ -35,11 +40,10 @@ TimeChangeRule *tcr;
 
 // Network clients
 WiFiUDP ntpUDP;
-
 HTTPClient http;
-
 NTPClient timeClient(ntpUDP, "raspberrypi.lan", 0, 60000); //use internal ntp server, update every 10 minutes
 
+//NTPClient timeClient(ntpUDP, "au.pool.ntp.org", 0, 60000); //use internal ntp server, update every 10 minutes
 
 // defined in "credentials.h"
 const char* ssid      = ssid_name;      // The SSID (name) of your Wi-Fi network
@@ -47,14 +51,14 @@ const char* password  = ssid_pass;      // The password of the Wi-Fi network
 
 const int led = LED_BUILTIN;
 
+// Font width
+int dwidth = 185;
+
 // yes this seems backwards but it works...
 void ledOn(void)  { digitalWrite(led, LOW);} 
 void ledOff(void) { digitalWrite(led, HIGH);}
 void wait(void)   { delay(1500);}
 
-// Font width
-int dwidth = 185;
-
 void setup() {
   pinMode(led, OUTPUT);
   ledOff();
@@ -78,7 +82,9 @@ void setup() {
   timeClient.begin();
   ntpUpdate();
   epd_clear();
+  weatherUpdate();
   printDateTime(1);
+  epd_update();
   ledOff();
 }
 
@@ -104,8 +110,9 @@ void wifi() {
 }
 
 void ntpUpdate() {
-  timeClient.update();
+  if (timeClient.update()) {  
-  setTime(timeClient.getEpochTime());
+    setTime(timeClient.getEpochTime());
+  }
 }
 
 
@@ -151,12 +158,11 @@ void disp_digit(int digit, int xpos){
       epd_disp_bitmap("9.JPG", dpos, ypos);
       break;
   }
+    delay(500);	  
 }
 
 void disp_time(int hours, int minutes) {
   
-  epd_clear();
-
   // first digit of hours
   if (hours > 19) {
      disp_digit(2, 1);
@@ -172,6 +178,7 @@ void disp_time(int hours, int minutes) {
   disp_digit(hours, 2);
 
   epd_disp_bitmap("COLO.JPG", 2 * dwidth, 0);
+  delay(500);
 
   // first minutes digit
   if (minutes > 49) {
@@ -195,7 +202,7 @@ void disp_time(int hours, int minutes) {
 
   // second minutes digit 
   disp_digit(minutes, 4);
-
+  
 }
 
 
@@ -203,10 +210,9 @@ void printDateTime(int update_epd)
 {
   char buf[64];
   
-  time_t t;
+  time_t t;    
-    
   t = ausET.toLocal(now(), &tcr);
-  
+
   char m[4];    // temporary storage for month string (DateStrings.cpp uses shared buffer)
   strcpy(m, monthShortStr(month(t)));
   
@@ -215,6 +221,7 @@ void printDateTime(int update_epd)
   
   if (update_epd > 0) {
     disp_time(hour(t), minute(t));
+    wait();
   }
   
   sprintf(buf, "%s %.2d %s %d %s", dayShortStr(weekday(t)), day(t), m, year(t), &tcr -> abbrev);
@@ -222,29 +229,77 @@ void printDateTime(int update_epd)
   
   if (update_epd > 0) {
     epd_set_en_font(ASCII64);
-    epd_disp_string(buf, 150, 290);
+    epd_disp_string(buf, 150, 225);
-    epd_update();
+    delay(500);
-    delay(1500);
     Serial.println("Screen Updated");
   }
 }
 
 void weatherUpdate(void) {
+  const size_t capacity = 4*JSON_OBJECT_SIZE(2) + JSON_OBJECT_SIZE(4) + 150;
+  DynamicJsonBuffer jsonBuffer(capacity);
 
-  http.begin(owm_url + api_key);
+  time_t t;
+  
+  char buf[96] = {};
+  const char* nstr = "Now";
+  const char* tstr = "Today";
+  const char* tmstr = "Tomorrow";
+  
+  http.begin(ds_url);
   int httpCode = http.GET();
-
+  
   if (httpCode > 0) {
+    JsonObject& root = jsonBuffer.parseObject(http.getString());
+    
+    if (!root.success()) {
+      Serial.print(F("parseObject() failed: "));
+      return;
+    }
+    float current_temp = root["current"]["temp"]; 
+    const char* current_icon = root["current"]["icon"]; 
+    
+    float today_max = root["today"]["max"]; 
+    const char* today_icon = root["today"]["icon"]; 
+    
+    float tomorrow_max = root["tomorrow"]["max"]; 
+    const char* tomorrow_icon = root["tomorrow"]["icon"];
+    
+    float day_after_max = root["day_after"]["max"];
+    const char* day_after_icon = root["day_after"]["icon"];
 
-    String payload = http.getString();
+
-    Serial.println(httpCode);
+    epd_set_en_font(ASCII64);
-    Serial.println(payload);
+
+    //Today
+    t = ausET.toLocal(now());
+    epd_disp_string(dayStr(weekday(t)), 0, 536);
+    delay(500);
+    (String(today_max, 1)).toCharArray(buf,64);
+    epd_disp_string(buf, 0, 472);
+    delay(500);
+
+    //Tomorrow
+    t = ausET.toLocal(now() + 86400, &tcr);
+    epd_disp_string(dayStr(weekday(t)), 267, 536);
+    delay(500);
+    (String(tomorrow_max, 1)).toCharArray(buf,64);
+    epd_disp_string(buf, 267, 472);
+    delay(500);
+
+    //Day after Tomorrow
+    t = ausET.toLocal(now() + 86400 + 86400);
+    epd_disp_string(dayStr(weekday(t)), 533, 536);
+    delay(500);
+    (String(day_after_max, 1)).toCharArray(buf,64);
+    epd_disp_string(buf, 533, 472);
+    delay(500);
+    
   } else {
     Serial.print("Error on HTTP Request: ");
     Serial.println(httpCode);
-
-    http.end();
   }
+  http.end();
 }
 
 void loop() {
@@ -257,20 +312,22 @@ void loop() {
   }
 
   ntpUpdate();
-  //weatherUpdate();
   
-  if (second(now()) >= 49) {
+  if (second(now()) >= 55) {
     epd_wakeup();
-    while (second(now()) != 0) {
+    while (second(now()) != 57) {
       delay(500);
     }
+    epd_clear();
+    weatherUpdate();
     printDateTime(1);
-    delay(4000);
+    epd_update();
+    delay(5000);
     epd_enter_stopmode();
   }
 
 
-  sleep_seconds = 49 - second(now());
+  sleep_seconds = 55 - second(now());
   Serial.print("Sleeping for: ");
   Serial.println(sleep_seconds);
 

images/images.ino

@@ -25,6 +25,11 @@ void setup() {
   epd_wakeup();
   delay(1500);
   epd_set_memory(MEM_TF);
+  epd_disp_bitmap("0.jpg", 0, 0);
+  epd_disp_bitmap("9.jpg", 185,0);
+  Serial.println("Attempting to display 0 and 9");
+  epd_update();
+  delay(10000);    
   epd_load_pic();
   epd_set_memory(MEM_NAND);
   delay(1500);