ESP8266
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Published
20 hours ago •
electronicsguy
electronicsguy
getResponseBody does not get the JSON the request returns
I am sending a get request to the national weather service (api.weather.gov) and it sends back a json with a forecast which is printed to the terminal, but when I use getResponseBody(), the JSON is not stored under the variable it is assigned to.
Sketch:
extern SoftwareSerial espToMega;
HTTPSRedirect* weather = nullptr;
const char* host1 = "api.weather.gov";
String url1 = "/gridpoints/LZK/49,94/forecast";
void weatherConnect(){
weather = new HTTPSRedirect(httpsPort);
weather->setInsecure();
weather->setPrintResponseBody(true);
weather->setContentTypeHeader("application/json");
espToMega.println("Connecting");
Serial.print("Connecting to ");
Serial.println(host1);
bool flag1 = false;
for (int i = 0; i < 5; i++) {
int retval1 = weather->connect(host1, httpsPort);
if (retval1 == 1) {
flag1 = true;
Serial.println("Connected");
break;
}
else
Serial.println("Connection failed. Retrying...");
}
if (!flag1) {
Serial.print("Could not connect to server: ");
Serial.println(host1);
return;
}
String forecast = "";
espToMega.println("clear");
espToMega.flush();
delay(500);
// delete HTTPSRedirect object
delete weather;
weather = nullptr;
static bool flag = false;
if (!flag) {
weather = new HTTPSRedirect(httpsPort);
weather->setInsecure();
flag = true;
weather->setPrintResponseBody(true);
}
if (weather != nullptr) {
if (!weather->connected()) {
weather->connect(host1, httpsPort);
}
}
else {
Serial.println("Error creating client object!");
}
//getting data
Serial.println("requesting weather data...");
weather->_keepAlive = false;
if (weather->GET(url1, host1)) {}
else {
// do stuff here if publish was not successful
Serial.println("Error while connecting");
}
forecast = weather->getResponseBody();
Serial.print((String)("Forecast:\n" + forecast));
Serial.flush();
Serial.println("Done with Setup");
weather->stop();
}
void setup() {
pinMode(10, INPUT);
espToMega.begin(115200);
Serial.begin(9600);
delay(10);
Serial.println('\n');
// Connect to WiFi
WiFi.begin(ssid, password);
Serial.print("Connecting to ");
Serial.print(ssid); Serial.println(" ...");
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.print(".");
}
Serial.println('\n');
Serial.println("Connection established!");
Serial.print("IP address:\t");
Serial.println(WiFi.localIP());
googleConnect();
weatherConnect();
espToMega.println("clear");
espToMega.flush();
delay(500);
timeClient.begin();
timeClient.update();
getInitialTime();
delay(1000);
requestEvents();
}
Serial Output
Connecting to Hogwarts ...
14:27:01.153 -> ....
14:27:04.937 ->
14:27:04.971 -> Connection established!
14:27:04.971 -> IP address: 192.168.1.15
14:27:05.005 -> Connecting to script.google.com
14:27:06.163 -> Connected
14:27:07.763 -> requesting data...
14:27:09.599 -> Events:
14:27:09.599 -> Connecting to api.weather.gov
14:27:10.722 -> Connected
14:27:12.256 -> requesting weather data...
14:27:12.359 -> {
14:27:12.359 -> "@context": [
14:27:12.359 -> "https://geojson.org/geojson-ld/geojson-context.jsonld",
14:27:12.427 -> {
14:27:12.461 -> "@version": "1.1",
14:27:12.495 -> "wx": "https://api.weather.gov/ontology#",
14:27:12.529 -> "geo": "http://www.opengis.net/ont/geosparql#",
14:27:12.597 -> "unit": "http://codes.wmo.int/common/unit/",
14:27:12.665 -> "@vocab": "https://api.weather.gov/ontology#"
14:27:12.733 -> }
14:27:12.733 -> ],
14:27:12.733 -> "type": "Feature",
14:27:12.767 -> "geometry": {
14:27:12.801 -> "type": "Polygon",
14:27:12.801 -> "coordinates": [
14:27:12.836 -> [
14:27:12.870 -> [
14:27:12.870 -> -93.170613200000005,
14:27:12.938 -> 35.271125400000003
14:27:12.972 -> ],
14:27:12.972 -> [
14:27:13.006 -> -93.170984500000003,
14:27:13.040 -> 35.248660200000003
14:27:13.074 -> ],
14:27:13.108 -> [
14:27:13.142 -> -93.1434876,
14:27:13.176 -> 35.248355000000004
14:27:13.210 -> ],
14:27:13.244 -> [
14:27:13.244 -> -93.143110800000002,
14:27:13.278 -> 35.270820100000002
14:27:13.346 -> ],
14:27:13.346 -> [
14:27:13.380 -> -93.170613200000005,
14:27:13.415 -> 35.271125400000003
14:27:13.449 -> ]
14:27:13.483 -> ]
14:27:13.483 -> ]
14:27:13.517 -> },
14:27:13.517 -> "properties": {
14:27:13.551 -> "updated": "2020-07-26T18:36:34+00:00",
14:27:13.585 -> "units": "us",
14:27:13.619 -> "forecastGenerator": "BaselineForecastGenerator",
14:27:13.687 -> "generatedAt": "2020-07-26T18:49:18+00:00",
14:27:13.721 -> "updateTime": "2020-07-26T18:36:34+00:00",
14:27:13.789 -> "validTimes": "2020-07-26T12:00:00+00:00/P7DT13H",
14:27:13.857 -> "elevation": {
14:27:13.857 -> "value": 146.9136,
14:27:13.891 -> "unitCode": "unit:m"
14:27:13.925 -> },
14:27:13.959 -> "periods": [
14:27:13.959 -> {
14:27:13.993 -> "number": 1,
14:27:14.027 -> "name": "This Afternoon",
14:27:14.061 -> "startTime": "2020-07-26T13:00:00-05:00",
14:27:14.128 -> "endTime": "2020-07-26T18:00:00-05:00",
14:27:14.196 -> "isDaytime": true,
14:27:14.230 -> "temperature": 92,
14:27:14.264 -> "temperatureUnit": "F",
14:27:14.299 -> "temperatureTrend": null,
14:27:14.367 -> "windSpeed": "5 mph",
14:27:14.401 -> "windDirection": "SSE",
14:27:14.435 -> "icon": "https://api.weather.gov/icons/land/day/tsra_hi,20?size=medium",
14:27:14.537 -> "shortForecast": "Slight Chance Showers And Thunderstorms",
14:27:14.606 -> "detailedForecast": "A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. Heat index values as high as 100. South southeast wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible."
14:27:14.911 -> },
14:27:14.911 -> {
14:27:14.945 -> "number": 2,
14:27:14.979 -> "name": "Tonight",
14:27:15.013 -> "startTime": "2020-07-26T18:00:00-05:00",
14:27:15.047 -> "endTime": "2020-07-27T06:00:00-05:00",
14:27:15.116 -> "isDaytime": false,
14:27:15.150 -> "temperature": 74,
14:27:15.184 -> "temperatureUnit": "F",
14:27:15.252 -> "temperatureTrend": null,
14:27:15.286 -> "windSpeed": "0 to 5 mph",
14:27:15.320 -> "windDirection": "S",
14:27:15.389 -> "icon": "https://api.weather.gov/icons/land/night/tsra_hi,20/few?size=medium",
14:27:15.457 -> "shortForecast": "Slight Chance Showers And Thunderstorms then Mostly Clear",
14:27:15.559 -> "detailedForecast": "A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 74. Heat index values as high as 98. South wind 0 to 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible."
14:27:15.865 -> },
14:27:15.865 -> {
14:27:15.899 -> "number": 3,
14:27:15.933 -> "name": "Monday",
14:27:15.967 -> "startTime": "2020-07-27T06:00:00-05:00",
14:27:16.035 -> "endTime": "2020-07-27T18:00:00-05:00",
14:27:16.069 -> "isDaytime": true,
14:27:16.137 -> "temperature": 91,
14:27:16.171 -> "temperatureUnit": "F",
14:27:16.205 -> "temperatureTrend": null,
14:27:16.239 -> "windSpeed": "0 to 5 mph",
14:27:16.307 -> "windDirection": "SW",
14:27:16.341 -> "icon": "https://api.weather.gov/icons/land/day/sct/tsra_hi,20?size=medium",
14:27:16.443 -> "shortForecast": "Mostly Sunny then Slight Chance Showers And Thunderstorms",
14:27:16.545 -> "detailedForecast": "A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. Heat index values as high as 97. Southwest wind 0 to 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible."
14:27:16.817 -> },
14:27:16.851 -> {
14:27:16.851 -> "number": 4,
14:27:16.885 -> "name": "Monday Night",
14:27:16.919 -> "startTime": "2020-07-27T18:00:00-05:00",
14:27:16.987 -> "endTime": "2020-07-28T06:00:00-05:00",
14:27:17.055 -> "isDaytime": false,
14:27:17.089 -> "temperature": 73,
14:27:17.123 -> "temperatureUnit": "F",
14:27:17.157 -> "temperatureTrend": null,
14:27:17.226 -> "windSpeed": "0 mph",
14:27:17.260 -> "windDirection": "SSW",
14:27:17.294 -> "icon": "https://api.weather.gov/icons/land/night/tsra_hi,20/tsra_hi,30?size=medium",
14:27:17.396 -> "shortForecast": "Chance Showers And Thunderstorms",
14:27:17.465 -> "detailedForecast": "A chance of showers and thunderstorms. Partly cloudy, with a low around 73. South southwest wind around 0 mph. Chance of precipitation is 30%."
14:27:17.671 -> },
14:27:17.671 -> {
14:27:17.705 -> "number": 5,
14:27:17.739 -> "name": "Tuesday",
14:27:17.774 -> "startTime": "2020-07-28T06:00:00-05:00",
14:27:17.843 -> "endTime": "2020-07-28T18:00:00-05:00",
14:27:17.877 -> "isDaytime": true,
14:27:17.911 -> "temperature": 89,
14:27:17.979 -> "temperatureUnit": "F",
14:27:18.013 -> "temperatureTrend": null,
14:27:18.048 -> "windSpeed": "0 mph",
14:27:18.082 -> "windDirection": "S",
14:27:18.150 -> "icon": "https://api.weather.gov/icons/land/day/tsra_hi,50/tsra_hi,60?size=medium",
14:27:18.253 -> "shortForecast": "Showers And Thunderstorms Likely",
14:27:18.321 -> "detailedForecast": "Showers and thunderstorms likely. Partly sunny, with a high near 89. South wind around 0 mph. Chance of precipitation is 60%."
14:27:18.493 -> },
14:27:18.493 -> {
14:27:18.527 -> "number": 6,
14:27:18.561 -> "name": "Tuesday Night",
14:27:18.595 -> "startTime": "2020-07-28T18:00:00-05:00",
14:27:18.663 -> "endTime": "2020-07-29T06:00:00-05:00",
14:27:18.697 -> "isDaytime": false,
14:27:18.765 -> "temperature": 72,
14:27:18.798 -> "temperatureUnit": "F",
14:27:18.832 -> "temperatureTrend": null,
14:27:18.866 -> "windSpeed": "0 mph",
14:27:18.899 -> "windDirection": "ESE",
14:27:18.966 -> "icon": "https://api.weather.gov/icons/land/night/tsra_sct,60/tsra_sct,50?size=medium",
14:27:19.067 -> "shortForecast": "Showers And Thunderstorms Likely",
14:27:19.135 -> "detailedForecast": "Showers and thunderstorms likely. Mostly cloudy, with a low around 72. East southeast wind around 0 mph. Chance of precipitation is 60%."
14:27:19.339 -> },
14:27:19.339 -> {
14:27:19.373 -> "number": 7,
14:27:19.373 -> "name": "Wednesday",
14:27:19.441 -> "startTime": "2020-07-29T06:00:00-05:00",
14:27:19.476 -> "endTime": "2020-07-29T18:00:00-05:00",
14:27:19.544 -> "isDaytime": true,
14:27:19.578 -> "temperature": 85,
14:27:19.612 -> "temperatureUnit": "F",
14:27:19.680 -> "temperatureTrend": null,
14:27:19.714 -> "windSpeed": "0 to 5 mph",
14:27:19.748 -> "windDirection": "SSE",
14:27:19.782 -> "icon": "https://api.weather.gov/icons/land/day/tsra,50/tsra,60?size=medium",
14:27:19.884 -> "shortForecast": "Showers And Thunderstorms Likely",
14:27:19.987 -> "detailedForecast": "Showers and thunderstorms likely. Mostly cloudy, with a high near 85. South southeast wind 0 to 5 mph. Chance of precipitation is 60%."
14:27:20.157 -> },
14:27:20.157 -> {
14:27:20.191 -> "number": 8,
14:27:20.225 -> "name": "Wednesday Night",
14:27:20.259 -> "startTime": "2020-07-29T18:00:00-05:00",
14:27:20.328 -> "endTime": "2020-07-30T06:00:00-05:00",
14:27:20.396 -> "isDaytime": false,
14:27:20.430 -> "temperature": 71,
14:27:20.464 -> "temperatureUnit": "F",
14:27:20.498 -> "temperatureTrend": null,
14:27:20.532 -> "windSpeed": "0 to 5 mph",
14:27:20.600 -> "windDirection": "SSW",
14:27:20.634 -> "icon": "https://api.weather.gov/icons/land/night/tsra,60?size=medium",
14:27:20.737 -> "shortForecast": "Showers And Thunderstorms Likely",
14:27:20.805 -> "detailedForecast": "Showers and thunderstorms likely. Mostly cloudy, with a low around 71. South southwest wind 0 to 5 mph. Chance of precipitation is 60%."
14:27:20.975 -> },
14:27:21.009 -> {
14:27:21.009 -> "number": 9,
14:27:21.043 -> "name": "Thursday",
14:27:21.077 -> "startTime": "2020-07-30T06:00:00-05:00",
14:27:21.145 -> "endTime": "2020-07-30T18:00:00-05:00",
14:27:21.213 -> "isDaytime": true,
14:27:21.248 -> "temperature": 87,
14:27:21.282 -> "temperatureUnit": "F",
14:27:21.316 -> "temperatureTrend": null,
14:27:21.384 -> "windSpeed": "5 mph",
14:27:21.418 -> "windDirection": "SW",
14:27:21.452 -> "icon": "https://api.weather.gov/icons/land/day/tsra,60?size=medium",
14:27:21.555 -> "shortForecast": "Showers And Thunderstorms Likely",
14:27:21.623 -> "detailedForecast": "Showers and thunderstorms likely. Mostly cloudy, with a high near 87. Southwest wind around 5 mph. Chance of precipitation is 60%."
14:27:21.793 -> },
14:27:21.793 -> {
14:27:21.827 -> "number": 10,
14:27:21.861 -> "name": "Thursday Night",
14:27:21.895 -> "startTime": "2020-07-30T18:00:00-05:00",
14:27:21.965 -> "endTime": "2020-07-31T06:00:00-05:00",
14:27:22.033 -> "isDaytime": false,
14:27:22.067 -> "temperature": 70,
14:27:22.101 -> "temperatureUnit": "F",
14:27:22.135 -> "temperatureTrend": null,
14:27:22.169 -> "windSpeed": "0 to 5 mph",
14:27:22.237 -> "windDirection": "SW",
14:27:22.271 -> "icon": "https://api.weather.gov/icons/land/night/tsra,60/tsra,40?size=medium",
14:27:22.374 -> "shortForecast": "Showers And Thunderstorms Likely",
14:27:22.442 -> "detailedForecast": "Showers and thunderstorms likely. Mostly cloudy, with a low around 70. Chance of precipitation is 60%."
14:27:22.578 -> },
14:27:22.612 -> {
14:27:22.612 -> "number": 11,
14:27:22.646 -> "name": "Friday",
14:27:22.680 -> "startTime": "2020-07-31T06:00:00-05:00",
14:27:22.748 -> "endTime": "2020-07-31T18:00:00-05:00",
14:27:22.816 -> "isDaytime": true,
14:27:22.850 -> "temperature": 87,
14:27:22.884 -> "temperatureUnit": "F",
14:27:22.918 -> "temperatureTrend": null,
14:27:22.986 -> "windSpeed": "0 to 5 mph",
14:27:23.020 -> "windDirection": "WSW",
14:27:23.054 -> "icon": "https://api.weather.gov/icons/land/day/tsra_sct,50?size=medium",
14:27:23.156 -> "shortForecast": "Chance Showers And Thunderstorms",
14:27:23.224 -> "detailedForecast": "A chance of showers and thunderstorms. Mostly cloudy, with a high near 87. Chance of precipitation is 50%."
14:27:23.395 -> },
14:27:23.395 -> {
14:27:23.429 -> "number": 12,
14:27:23.463 -> "name": "Friday Night",
14:27:23.497 -> "startTime": "2020-07-31T18:00:00-05:00",
14:27:23.565 -> "endTime": "2020-08-01T06:00:00-05:00",
14:27:23.599 -> "isDaytime": false,
14:27:23.667 -> "temperature": 70,
14:27:23.701 -> "temperatureUnit": "F",
14:27:23.735 -> "temperatureTrend": null,
14:27:23.769 -> "windSpeed": "0 to 5 mph",
14:27:23.837 -> "windDirection": "NW",
14:27:23.871 -> "icon": "https://api.weather.gov/icons/land/night/tsra_hi,50/tsra_hi,30?size=medium",
14:27:23.973 -> "shortForecast": "Chance Showers And Thunderstorms",
14:27:24.041 -> "detailedForecast": "A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 50%."
14:27:24.212 -> },
14:27:24.212 -> {
14:27:24.247 -> "number": 13,
14:27:24.247 -> "name": "Saturday",
14:27:24.314 -> "startTime": "2020-08-01T06:00:00-05:00",
14:27:24.348 -> "endTime": "2020-08-01T18:00:00-05:00",
14:27:24.416 -> "isDaytime": true,
14:27:24.450 -> "temperature": 88,
14:27:24.484 -> "temperatureUnit": "F",
14:27:24.553 -> "temperatureTrend": null,
14:27:24.587 -> "windSpeed": "0 to 5 mph",
14:27:24.621 -> "windDirection": "NNE",
14:27:24.690 -> "icon": "https://api.weather.gov/icons/land/day/tsra_hi,40?size=medium",
14:27:24.758 -> "shortForecast": "Chance Showers And Thunderstorms",
14:27:24.827 -> "detailedForecast": "A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 40%."
14:27:24.998 -> },
14:27:24.998 -> {
14:27:25.032 -> "number": 14,
14:27:25.066 -> "name": "Saturday Night",
14:27:25.100 -> "startTime": "2020-08-01T18:00:00-05:00",
14:27:25.168 -> "endTime": "2020-08-02T06:00:00-05:00",
14:27:25.236 -> "isDaytime": false,
14:27:25.270 -> "temperature": 68,
14:27:25.304 -> "temperatureUnit": "F",
14:27:25.338 -> "temperatureTrend": null,
14:27:25.372 -> "windSpeed": "0 mph",
14:27:25.441 -> "windDirection": "NE",
14:27:25.475 -> "icon": "https://api.weather.gov/icons/land/night/tsra_hi,40/tsra_hi,30?size=medium",
14:27:25.577 -> "shortForecast": "Chance Showers And Thunderstorms",
14:27:25.645 -> "detailedForecast": "A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Chance of precipitation is 40%."
14:27:25.816 -> }
14:27:25.816 -> ]
14:27:25.816 -> }
14:27:30.686 -> }
14:27:30.721 -> Forecast:
14:27:30.721 -> Done with Setup
14:27:31.538 -> `26-07-2020
14:27:31.572 -> ~0 14:27:31
14:27:33.654 -> requesting data...
14:27:35.462 -> Events:
TLDR
the string variable "forecast" is supposed to contain a really long JSON from the getResponseBody() method and its acting as if its blank.
