From 61fa35878ffcf0b544bc5bb9fae5f1870be49702 Mon Sep 17 00:00:00 2001
From: overflowerror <mail@overflowerror.com>
Date: Sun, 14 Nov 2021 14:45:12 +0100
Subject: [PATCH] initial commit

---
 IotRelay.cpp | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 IotRelay.h   | 28 ++++++++++++++++++++++
 example.ino  | 26 +++++++++++++++++++++
 3 files changed, 119 insertions(+)
 create mode 100644 IotRelay.cpp
 create mode 100644 IotRelay.h
 create mode 100644 example.ino

diff --git a/IotRelay.cpp b/IotRelay.cpp
new file mode 100644
index 0000000..1387ad7
--- /dev/null
+++ b/IotRelay.cpp
@@ -0,0 +1,65 @@
+#include "IotRelay.h"
+
+
+void IotRelay::begin(String addr, int port, String id, String loc) {
+  this->addr = addr;
+  this->port = port;
+  this->id = id;
+  this->loc = loc;
+  this->size = 0;
+}
+
+void IotRelay::connect(String ssid, String password) {
+  WiFi.mode(WIFI_STA);
+  WiFi.begin(ssid, password);
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+  }
+  Serial.println();
+  Serial.print("IP: ");
+  Serial.println(WiFi.localIP());
+}
+
+void IotRelay::add(String key, String value) {
+  keys[size] = key;
+  values[size] = value;
+
+  size++;
+}
+
+int IotRelay::send() {
+  client.connect(addr, port);
+  client.print("id=");
+  client.print(id);
+  client.print("\n");
+  client.print("loc=");
+  client.print(loc);
+  client.print("\n");
+  for(int i = 0; i < size; i++) {
+    client.print(keys[i]);
+    client.print("=");
+    client.print(values[i]);
+    client.print("\n");
+  }
+  client.print("\n");
+
+  size = 0;
+
+  unsigned long startTime = millis();
+  while (client.available() < 3) {
+    if (millis() - startTime > CONNECTION_TIMEOUT) {
+      client.stop();
+      return -1;
+    }
+    delay(CHECK_TIMEOUT);
+  }
+
+  if (client.read() != 'o' || client.read() != 'k') {
+    client.stop();
+    return -1;
+  }
+
+  client.stop();
+  return 0;
+}
diff --git a/IotRelay.h b/IotRelay.h
new file mode 100644
index 0000000..c3f26aa
--- /dev/null
+++ b/IotRelay.h
@@ -0,0 +1,28 @@
+#ifndef _IOT_RELAY_H_
+#define _IOT_RELAY_H_
+
+#include <ESP8266WiFi.h>
+
+#define MAX_DATA_VALUES (10)
+#define CONNECTION_TIMEOUT (2000)
+#define CHECK_TIMEOUT (500)
+
+class IotRelay {
+    public:
+      void begin(String addr, int port, String id, String loc);
+      void connect(String ssid, String password);
+      void add(String key, String value);
+      int send();
+
+    private:
+      WiFiClient client;
+      String addr;
+      int port;
+      String id;
+      String loc;
+      int size;
+      String keys[MAX_DATA_VALUES];
+      String values[MAX_DATA_VALUES];
+};
+
+#endif
diff --git a/example.ino b/example.ino
new file mode 100644
index 0000000..eb81bf2
--- /dev/null
+++ b/example.ino
@@ -0,0 +1,26 @@
+#include <IotRelay.h>
+
+const char* ssid = "wifi-ssid";
+const char* password = "wifi-password";
+
+const char* addr = "ip to iot relay server";
+int port = 20159;
+const char* id = "main-sensor";
+const char* loc = "living-room";
+
+IotRelay relay;
+
+void setup() {
+  Serial.begin(9600);
+  
+  relay.connect(ssid, password);
+  relay.begin(addr, port, id, loc);
+}
+
+void loop() {
+  relay.add("temp", String(31.415, 3));
+  relay.add("humid", String(42));
+  relay.send();
+
+  delay(5000);
+}