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Add API subscription to Arduino sketch

This commit is contained in:
Daniele Viganò 2020-06-03 23:53:25 +02:00
parent b6653c510d
commit bb0e043bf9
Signed by: dani
GPG Key ID: DB49AFC03C40EE02

View File

@ -9,11 +9,10 @@
#define AREF_VOLTAGE 3.3 #define AREF_VOLTAGE 3.3
// const String serverName = "sensor.server.domain"; // const String serverName = "sensor.server.domain";
const size_t capacity = 2 * JSON_OBJECT_SIZE(3) + JSON_OBJECT_SIZE(2) + 20;
const size_t capacity = JSON_OBJECT_SIZE(2) + 2 * JSON_OBJECT_SIZE(3) + 110; DynamicJsonDocument telemetry(capacity);
JsonObject payload = telemetry.createNestedObject("payload");
DynamicJsonDocument json(capacity);
JsonObject payload = json.createNestedObject("payload");
JsonObject temp = payload.createNestedObject("temperature"); JsonObject temp = payload.createNestedObject("temperature");
unsigned int counter = 0; unsigned int counter = 0;
@ -30,7 +29,8 @@ struct netConfig {
}; };
netConfig config; netConfig config;
const String URL = "/telemetry/"; const String apiURL = "/api/subscribe/";
const String telemetryURL = "/telemetry/";
const int postDelay = 10 * 1000; const int postDelay = 10 * 1000;
void setup(void) { void setup(void) {
@ -38,6 +38,8 @@ void setup(void) {
analogReference(EXTERNAL); analogReference(EXTERNAL);
StaticJsonDocument<20> api;
byte mac[6]; byte mac[6];
char serial[9]; char serial[9];
@ -80,7 +82,10 @@ void setup(void) {
Serial.println("DEBUG: clock updated via NTP."); Serial.println("DEBUG: clock updated via NTP.");
#endif #endif
json["device"] = serial; api["serial"] = serial;
postData(config, apiURL, api);
telemetry["device"] = serial;
// payload["id"] = serverName; // payload["id"] = serverName;
} }
@ -93,9 +98,9 @@ void loop(void) {
float tempC = (tempVoltage - 0.5) * 100 ; float tempC = (tempVoltage - 0.5) * 100 ;
if (NTPValid) { if (NTPValid) {
json["clock"] = timeClient.getEpochTime(); telemetry["clock"] = timeClient.getEpochTime();
} else { } else {
json["clock"] = NULL; // converted into 0 telemetry["clock"] = NULL; // converted into 0
} }
payload["light"] = photocellReading; payload["light"] = photocellReading;
@ -103,14 +108,30 @@ void loop(void) {
temp["raw"] = tempReading; temp["raw"] = tempReading;
temp["volts"] = tempVoltage; temp["volts"] = tempVoltage;
if (EthernetClient client = client.connect(config.address, config.port)) { postData(config, telemetryURL, telemetry);
if (counter == 6 * 120) { // Update clock every 6 times * 10 sec * 120 minutes = 2 hrs
timeClient.update();
counter = 0;
#if DEBUG_TO_SERIAL
Serial.println("DEBUG: clock updated via NTP.");
#endif
} else {
counter++;
}
delay(postDelay);
}
void postData(const netConfig &postAPI, const String &URL, const DynamicJsonDocument &json) {
if (EthernetClient client = client.connect(postAPI.address, postAPI.port)) {
client.print("POST "); client.print("POST ");
client.print(URL); client.print(URL);
client.println(" HTTP/1.1"); client.println(" HTTP/1.1");
client.print("Host: "); client.print("Host: ");
client.print(config.address); client.print(postAPI.address);
client.print(":"); client.print(":");
client.println(config.port); client.println(postAPI.port);
client.println("Content-Type: application/json"); client.println("Content-Type: application/json");
client.print("Content-Length: "); client.print("Content-Length: ");
client.println(measureJsonPretty(json)); client.println(measureJsonPretty(json));
@ -125,16 +146,4 @@ void loop(void) {
Serial.println("\n<<<"); Serial.println("\n<<<");
#endif #endif
} }
if (counter == 6 * 120) { // Update clock every 6 times * 10 sec * 120 minutes = 2 hrs
timeClient.update();
counter = 0;
#if DEBUG_TO_SERIAL
Serial.println("DEBUG: clock updated via NTP.");
#endif
} else {
counter++;
}
delay(postDelay);
} }