Added WiFi connection to thingspeak (unfinished, requires better

reconnect and more)

ingest.cpp

@@ -0,0 +1,84 @@
+#include <WiFi.h>
+
+#include "GeigerData.h"
+
+// WiFi and thingspeak credentials:
+//const char *wifiSsid = "...";
+//const char *wifiPassword = "...";
+//const char *thingspeakApiKey = "...";
+#include "credentials.h"
+
+const char *thingsPeakUrl = "api.thingspeak.com";
+
+void connect() {
+	wl_status_t status = WL_DISCONNECTED;
+
+	while (status != WL_CONNECTED) {
+		WiFi.begin(wifiSsid, wifiPassword);
+		Serial.print("Connecting to WiFi '");
+		Serial.print(wifiSsid);
+		Serial.println("' ...");
+		uint16_t waitRemaining = 10;
+		while ((status = WiFi.status()) != WL_CONNECTED && waitRemaining > 0) {
+			Serial.print(" status=");
+			Serial.println(status);
+			delay(500);
+			waitRemaining--;
+		}
+	}
+
+	Serial.println("WiFi connected!");
+}
+
+void initIngest() {
+	connect();
+}
+
+void ingest(GeigerData &geigerData, uint16_t intervalSamples) {
+	WiFiClient client;
+	if (!client.connect(thingsPeakUrl, 80)) {
+		Serial.print("Connecting to '");
+		Serial.print(thingsPeakUrl);
+		Serial.println("' failed");
+	} else {
+
+		const uint32_t pulses = geigerData.getPreviousPulses(1,
+				intervalSamples);
+		const uint32_t cpm = uint32_t(
+				pulses
+						/ ((float) intervalSamples * geigerData.sampleSeconds
+								/ 60.) + 0.5);
+		const float uSph = geigerData.toMicroSievertPerHour(pulses,
+				intervalSamples);
+
+		const String content = "api_key=" + String(thingspeakApiKey)
+				+ "&field1=" + String(cpm) + "&field2=" + String(uSph);
+
+		Serial.println("Ingesting");
+
+		client.print("POST /update HTTP/1.1\n");
+
+		client.print("Host: ");
+		client.print(thingsPeakUrl);
+		client.print("\n");
+
+		client.print("Connection: close\n");
+
+		client.print("Content-Type: application/x-www-form-urlencoded\n");
+		client.print("Content-Length: ");
+		client.print(content.length());
+		client.print("\n\n");
+
+		client.print(content);
+		delay(1000);
+
+		Serial.print("Response: ");
+		while (client.available()) {
+			char c = client.read();
+			Serial.write(c);
+		}
+		Serial.println();
+
+		client.stop();
+	}
+}