// GxEPD_Example : with Wifi, HTTP request, and JSON filtering // USE WITH GxGDEW042Z15 and BitmapLEK.h /******************************************************************* A sample project for making a HTTP GET request on an ESP8266 and parsing and filtering it from JSON and display using a Waveshare ESP8266 e-paper driver and 4.2 (400x300) 3-color display 2021 LEKtronics.com *******************************************************************/ #include #include #include #include #include // 4.2" b/w/r //#include GxEPD_BitmapExamples #include "BitmapLEK.h" // FreeFonts from Adafruit_GFX //#include //#include //#include //#include #include #include // Waveshare e-Paper ESP8266 Driver Board //GxIO_Class io(SPI,CS=15, DC=4, RST=5) //GxEPD_Class display(io, RST=5, BUSY=12) GxIO_Class io(SPI, 15, 4, 5); GxEPD_Class display(io, 5, 12); //------- Replace the following! ------ char ssid[] = "*************"; // your network SSID (name) char password[] = "*********"; // your network key // For HTTP requests WiFiClient client; // Just the base of the URL you want to connect to #define TEST_HOST "api.weatherlink.com" String freedom_temp_f; //String freedom_wind_mph; //String freedom_wind_dir; //String freedom_windchill_f; String freedom_observation_time; int freedom_season; const uint8_t* season_bitmap; const uint8_t* temp_bitmap; int temp_f = 0; int temp_rounded = 0; //char Title[] = "---FREEDOM---"; void setup() { Serial.begin(115200); Serial.println(); Serial.println("setup"); display.init(115200); // enable diagnostic output on Serial // Connect to the WiFI WiFi.mode(WIFI_STA); WiFi.disconnect(); delay(100); // Attempt to connect to Wifi network: Serial.print("Connecting Wifi: "); Serial.println(ssid); WiFi.begin(ssid, password); while (WiFi.status() != WL_CONNECTED) { Serial.print("."); delay(500); } Serial.println(""); Serial.println("WiFi connected"); Serial.println("IP address: "); IPAddress ip = WiFi.localIP(); Serial.println(ip); Serial.println("setup done"); freedom_season = 4;//a starting point } void loop() { makeHTTPRequest(); #define HAS_RED_COLOR //showBitmapExample(); delay(960000);// 960000 is 15 minutes } void showBitmapExample() { ////////////////////////display.drawPicture(BitmapLEK_winter_black, BitmapLEK_30_red, sizeof(BitmapLEK_winter_black), sizeof(BitmapLEK_30_red)); // black-butterfly red-flower //delay(5000); display.init(); display.setRotation(0); // display.setFont(&FreeMonoBold9pt7b); //display.setTextColor(GxEPD_RED); //display.drawPicture(epd_bitmap_thermometer_empty_grad_104x300 , epd_bitmap_120_104x300, sizeof(epd_bitmap_thermometer_empty_grad_104x300 ), sizeof(epd_bitmap_120_104x300));//black,red Serial.println(sizeof(BitmapWaveshare_black)); Serial.println(sizeof(BitmapWaveshare_red)); // display.update(); //display.hibernate(); //delay(2000); } ///////////////////////////////// void makeHTTPRequest() { // Opening connection to server (Use 80 as port if HTTP) if (!client.connect(TEST_HOST, 80)) { Serial.println(F("Connection failed")); return; } // give the esp a breather yield(); // Send HTTP request client.print(F("GET ")); // This is the second half of a request (everything that comes after the base URL) client.print("/v1/NoaaExt.json?user=001D0AE07E21&pass=hD43n2bOyq&apiToken=****************************"); client.println(F(" HTTP/1.1")); //Headers client.print(F("Host: ")); client.println(TEST_HOST); client.println(F("Cache-Control: no-cache")); if (client.println() == 0) { Serial.println(F("Failed to send request")); return; } //delay(100); // Check HTTP status char status[32] = {0}; client.readBytesUntil('\r', status, sizeof(status)); if (strcmp(status, "HTTP/1.1 200 OK") != 0) { Serial.print(F("Unexpected response: ")); Serial.println(status); return; } // Skip HTTP headers char endOfHeaders[] = "\r\n\r\n"; if (!client.find(endOfHeaders)) { Serial.println(F("Invalid response")); return; } // This is probably not needed for most, but I had issues // with the Tindie api where sometimes there were random // characters coming back before the body of the response. // This will cause no harm to leave it in // peek() will look at the character, but not take it off the queue while (client.available() && client.peek() != '{') { char c = 0; client.readBytes(&c, 1); Serial.print(c); Serial.println("BAD"); } // The huge input: an extract from Davis Weather response const __FlashStringHelper* input_json = F( "{\"credit\": \"Davis Instruments Corp.\",\"credit_URL\": \"http://www.davisnet.com\"," "\"disclaimer_url\": \"http://www.davisnet.com/about/terms.asp\",\"copyright_url\": \"http://www.davisnet.com/about/terms.asp\"," "\"privacy_policy_url\": \"http://www.davisnet.com/about/privacy.asp\"," "\"image\": {\"url\": \"http://www.weatherlink.com/images/Logo_Davis_reflxblu.jpg\",\"title\": \"Davis WeatherLink\", \"link\": \"http://www.weatherlink.com\"}," "\"suggested_pickup\": \"15 minutes after the hour\", \"suggested_pickup_period\": \"60\",\"dewpoint_c\": \"-0.6\"," "\"dewpoint_f\": \"31.0\",\"dewpoint_string\": \"31.0 F (-0.6 C)\",\"heat_index_c\": \"2.2\",\"heat_index_f\": \"36.0\",\"heat_index_string\": \"36.0 F (2.2 C)\"," "\"location\": \"Pemberville, OH, United States of America\",\"latitude\": \"41.40177\",\"longitude\": \"-83.44719\",\"observation_time\": \"Last Updated on Dec 13 2021, 9:29 pm EST\"," "\"observation_time_rfc822\": \"Mon, 13 Dec 2021 21:29:31 -0500\",\"pressure_in\": \"30.362\",\"pressure_mb\": \"1028.2\",\"pressure_string\": \"1028.2 mb\"," "\"relative_humidity\": \"80\",\"station_id\": \"larryk240\",\"temp_c\": \"2.4\",\"temp_f\": \"36.4\",\"temperature_string\": \"36.4 F (2.4 C)\"," "\"wind_degrees\": \"225\",\"wind_dir\": \"Southwest\",\"wind_kt\": \"0.0\",\"wind_mph\": \"0.0\",\"windchill_c\": \"2.2\",\"windchill_f\": \"36.0\",\"windchill_string\": \"36.0 F (2.2 C)\"," "\"davis_current_observation\": {\"DID\": \"001D0AE07E21\",\"station_name\": \"Freedom\",\"observation_age\": 12,\"dewpoint_day_high_f\": \"36\"," "\"dewpoint_day_high_time\": \"4:15pm\",\"dewpoint_day_low_f\": \"26\",\"dewpoint_day_low_time\": \"7:20am\",\"dewpoint_month_high_f\": \"59\"," "\"dewpoint_month_low_f\": \"14\",\"dewpoint_year_high_f\": \"82\",\"dewpoint_year_low_f\": \"-8\",\"heat_index_day_high_f\": \"49\",\"heat_index_day_high_time\": \"1:13pm\"," "\"heat_index_month_high_f\": \"64\",\"heat_index_year_high_f\": \"109\",\"pressure_day_high_in\": \"30.362\",\"pressure_day_high_time\": \"9:23pm\"," "\"pressure_day_low_in\": \"30.228\",\"pressure_day_low_time\": \"12:11am\",\"pressure_month_high_in\": \"30.362\",\"pressure_month_low_in\": \"29.299\"," "\"pressure_tendency_string\": \"Rising Slowly\",\"pressure_year_high_in\": \"30.648\",\"pressure_year_low_in\": \"29.299\",\"rain_day_in\": \"0.0000\"," "\"rain_month_in\": \"1.1000\",\"rain_rate_day_high_in_per_hr\": \"0.0000\",\"rain_rate_hour_high_in_per_hr\": \"0.0000\",\"rain_rate_in_per_hr\": \"0.0000\"," "\"rain_rate_month_high_in_per_hr\": \"1.1100\",\"rain_rate_year_high_in_per_hr\": \"10.1100\",\"rain_storm_in\": \"0.0000\",\"rain_year_in\": \"40.6600\"," "\"relative_humidity_day_high\": \"82\",\"relative_humidity_day_high_time\": \"8:09pm\",\"relative_humidity_day_low\": \"54\",\"relative_humidity_day_low_time\": \"12:24pm\"," "\"relative_humidity_month_high\": \"97\",\"relative_humidity_month_low\": \"49\",\"relative_humidity_year_high\": \"98\",\"relative_humidity_year_low\": \"19\"," "\"relative_humidity_in\": \"46\",\"relative_humidity_in_day_high\": \"47\",\"relative_humidity_in_day_high_time\": \"5:54pm\",\"relative_humidity_in_day_low\": \"45\"," "\"relative_humidity_in_day_low_time\": \"10:01am\",\"relative_humidity_in_month_high\": \"48\",\"relative_humidity_in_month_low\": \"44\",\"relative_humidity_in_year_high\": \"56\"," "\"relative_humidity_in_year_low\": \"31\",\"sunrise\": \"7:52am\",\"sunset\": \"5:05pm\",\"temp_day_high_f\": \"49.8\",\"temp_day_high_time\": \"2:48pm\"," "\"temp_day_low_f\": \"31.2\",\"temp_day_low_time\": \"7:44am\",\"temp_month_high_f\": \"63.5\",\"temp_month_low_f\": \"19.7\",\"temp_year_high_f\": \"94.9\"," "\"temp_year_low_f\": \"-4.1\",\"temp_in_day_high_f\": \"52.9\",\"temp_in_day_high_time\": \"7:26pm\",\"temp_in_day_low_f\": \"50.6\",\"temp_in_day_low_time\": \"9:35am\"," "\"temp_in_f\": \"52.8\",\"temp_in_month_high_f\": \"58.5\",\"temp_in_month_low_f\": \"49.7\",\"temp_in_year_high_f\": \"90.8\",\"temp_in_year_low_f\": \"48.6\"," "\"wind_day_high_mph\": \"19.0\",\"wind_day_high_time\": \"12:27pm\",\"wind_month_high_mph\": \"43.0\",\"wind_ten_min_avg_mph\": \"1.0\",\"wind_ten_min_gust_mph\": \"3.0\"," "\"wind_year_high_mph\": \"43.0\",\"windchill_day_low_f\": \"28\",\"windchill_day_low_time\": \"4:10am\",\"windchill_month_low_f\": \"15\",\"windchill_year_low_f\": \"-6\"" "},\"time_to_generate\": \"0.007791 seconds\"}"); // The filter: it contains "true" for each value we want to keep DynamicJsonDocument filter (6144); filter["observation_time"] = true; filter["temp_f"] = true; //filter["wind_dir"] = true; //filter["wind_mph"] = true; //filter["windchill_f"] = true; // Deserialize the document DynamicJsonDocument doc (6144); deserializeJson(doc, input_json, DeserializationOption::Filter(filter)); DeserializationError error = deserializeJson(doc, client); if (!error) { // Print the result //serializeJsonPretty(doc, Serial); String freedom_observation_time = doc["observation_time"]; String freedom_temp_f = doc["temp_f"]; //String freedom_wind_mph = doc["wind_mph"]; //String freedom_wind_dir = doc["wind_dir"]; //String freedom_windchill_f = doc["windchill_f"]; /////////////////////////////////////////////////////////////////////////////////// // extract day and time from observation time int delimiter, delimiter_1, delimiter_2, delimiter_3, delimiter_4, delimiter_5; delimiter = freedom_observation_time.indexOf(" "); delimiter_1 = freedom_observation_time.indexOf(" ", delimiter + 1); delimiter_2 = freedom_observation_time.indexOf(" ", delimiter_1 +1); delimiter_3 = freedom_observation_time.indexOf(" ", delimiter_2 +1); delimiter_4 = freedom_observation_time.indexOf(" ", delimiter_3 +1); delimiter_5 = freedom_observation_time.indexOf(" ", delimiter_4 +1); String freedom_ob_day = freedom_observation_time.substring(delimiter_2 + 1, delimiter_4); //substring(beginning, end) if (freedom_ob_day == "Mar 21" ) { Serial.print("Season is "); Serial.println("Spring"); int freedom_season = 1; } if (freedom_ob_day == "Jun 21" ) { Serial.print("Season is "); Serial.println("Summer"); int freedom_season = 2; } if (freedom_ob_day == "Sep 21" ) { Serial.print("Season is "); Serial.println("Fall"); int freedom_season = 3; } if (freedom_ob_day == "Dec 21" ) { Serial.print("Season is "); Serial.println("Winter"); int freedom_season = 4; } //////////////////////////////////////////////////////////////////////////////////// Serial.println(""); Serial.print("freedom_temp_f: "); Serial.println(freedom_temp_f); Serial.print("freedom_ob_day: "); Serial.println(freedom_ob_day); //Serial.print("freedom_wind_mph: "); //Serial.println(freedom_wind_mph); //Serial.print("freedom_wind_dir: "); //Serial.println(freedom_wind_dir); //Serial.print("freedom_windchill_f: "); //Serial.println(freedom_windchill_f); temp_f = freedom_temp_f.toInt(); //convert freedom_temp_f to an integer //temp_f = -11;// troubleshooting Serial.print("temp_f: "); Serial.println(temp_f); temp_rounded = (temp_f / 5);//divide temp_f by 5 Serial.print("temp_rounded: "); Serial.println(temp_rounded); Serial.println(sizeof(BitmapLEK_winter_black));//BitmapLEK_spring_black // BitmapLEK_summer_black // BitmapLEK_fall_black // BitmapLEK_winter_black Serial.println(sizeof(BitmapLEK_25_red));//BitmapLEK_10neg_red to BitmapLEK_120_red switch (freedom_season){ case 1: season_bitmap = BitmapLEK_spring_black; break; case 2: season_bitmap = BitmapLEK_summer_black; break; case 3: season_bitmap = BitmapLEK_fall_black; break; case 4: season_bitmap = BitmapLEK_winter_black; break; } switch (temp_rounded){ case -2: Serial.println("display -10 degrees"); temp_bitmap = BitmapLEK_10neg_red; break; case -1: Serial.println("display -5 degrees"); temp_bitmap = BitmapLEK_5neg_red; break; case 0: Serial.println("display 0 degrees"); temp_bitmap = BitmapLEK_0_red; break; case 1: Serial.println("display 5 degrees"); temp_bitmap = BitmapLEK_5_red; break; case 2: Serial.println("display 10 degrees"); temp_bitmap = BitmapLEK_10_red; break; case 3: Serial.println("display 15 degrees"); temp_bitmap = BitmapLEK_15_red; break; case 4: Serial.println("display 20 degrees"); temp_bitmap = BitmapLEK_20_red; break; case 5: Serial.println("display 25 degrees"); temp_bitmap = BitmapLEK_25_red; break; case 6: Serial.println("display 30 degrees"); temp_bitmap = BitmapLEK_30_red; break; case 7: Serial.println("display 35 degrees"); temp_bitmap = BitmapLEK_35_red; break; case 8: Serial.println("display 40 degrees"); temp_bitmap = BitmapLEK_40_red; break; case 9: Serial.println("display 45 degrees"); temp_bitmap = BitmapLEK_45_red; break; case 10: Serial.println("display 50 degrees"); temp_bitmap = BitmapLEK_50_red; break; case 11: Serial.println("display 55 degrees"); temp_bitmap = BitmapLEK_55_red; break; case 12: Serial.println("display 60 degrees"); temp_bitmap = BitmapLEK_60_red; break; case 13: Serial.println("display 65 degrees"); temp_bitmap = BitmapLEK_65_red; break; case 14: Serial.println("display 70 degrees"); temp_bitmap = BitmapLEK_70_red; break; case 15: Serial.println("display 75 degrees"); temp_bitmap = BitmapLEK_75_red; break; case 16: Serial.println("display 80 degrees"); temp_bitmap = BitmapLEK_80_red; break; case 17: Serial.println("display 85 degrees"); temp_bitmap = BitmapLEK_85_red; break; case 18: Serial.println("display 90 degrees"); temp_bitmap = BitmapLEK_90_red; break; case 19: Serial.println("display 95 degrees"); temp_bitmap = BitmapLEK_95_red; break; case 20: Serial.println("display 100 degrees"); temp_bitmap = BitmapLEK_100_red; break; case 21: Serial.println("display 105 degrees"); temp_bitmap = BitmapLEK_105_red; break; case 22: Serial.println("display 110 degrees"); temp_bitmap = BitmapLEK_110_red; break; case 23: Serial.println("display 115 degrees"); temp_bitmap = BitmapLEK_115_red; break; case 24: Serial.println("display 120 degrees"); temp_bitmap = BitmapLEK_120_red; break; } display.drawPicture(season_bitmap, temp_bitmap, 15000, 15000); } else { Serial.print(F("deserializeJson() failed: ")); Serial.println(error.f_str()); return; } }