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--- projects:c-info-wand [2015/04/19 03:24] – uk
+++ projects:c-info-wand [2015/04/25 01:53] (current) – [code] uk
@@ Line 1: / Line 1: @@
 ====== c-info-wand ======
+{{:projects:c-info-wall.jpg?200|}}
 ===== elektronic =====
@@ Line 11: / Line 13: @@
     * zweite Gruppe: PL_4, PL_5, PM_1
     * dritte Gruppe: PM_7, PA_7, PM_6
+  * Pinout siehe: http://energia.nu/img/EK-TM4C1294XL.jpg
 ===== code =====
@@ Line 19: / Line 21: @@
 <code>
 /*
-  Fade for c-info wall at c-base.
+  Fade for c-info wall at c-base with MQTT
-  Works with TI's connected launchpad and the energia.nu IDE.
 */
+#include <SPI.h>
+#include <Ethernet.h>
+#include <PubSubClient.h>
 // Apparently the preprocessor variables B0 and B1 are already taken.
@@ Line 40: / Line 45: @@
 int brightness = 50;    // how bright the LED is
 int fadeAmount = 1;    // how many points to fade the LED by
+int fadeCounter = 0;
+// MQTTServer to use
+char server[] = "c-beam.cbrp3.c-base.org";
+void callback(char* topic, byte* payload, unsigned int length) {
+  Serial.print("Received message for topic ");
+  Serial.print(topic);
+  Serial.print("with length ");
+  Serial.println(length);
+  Serial.println("Message:");
+  Serial.write(payload, length);
+  Serial.println();
+  fadeCounter = 20;
+}
+EthernetClient ethClient;
+PubSubClient client(server, 1883, callback, ethClient);
 void setup()  {
@@ Line 51: / Line 75: @@
   pinMode(CBASEG2, OUTPUT);
   pinMode(CBASEB2, OUTPUT);
+  Serial.begin(115200);
+  Serial.print("Ethernet starting.");
+  // Start Ethernet with the build in MAC Address
+  Ethernet.begin(0);
+  Serial.print("My IP address: ");
+  Serial.println(Ethernet.localIP());
 }
-void loop() {
+void doFade() {
-  if (brightness < 90) {
+  while(true) {
-    fadeAmount = 1;
+    if (brightness < 50) {
-  }
+      fadeAmount = 1;
+      brightness = 50;
+      return;
+    }
-  if (brightness >= 255) {
+    if (brightness >= 200) {
-    fadeAmount = -1;
+      fadeAmount = -1;
-  }
+    }
-  // There was some problem with the upper-most LED stripe.
+    // There was some problem with the upper-most LED stripe.
-  // That is why we just set this one to full brightness forever.
+    // That is why we just set this one to full brightness forever.
-  analogWrite(CBASER0, 255);
+    if(fadeCounter > 0) {
-  analogWrite(CBASEG0, 255);
+      analogWrite(CBASER0, 0);
-  analogWrite(CBASEB0, 255);
+      analogWrite(CBASEG0, 0);
+      analogWrite(CBASEB0, 255);
+    }
+    else {
+      analogWrite(CBASER0, 255);
+      analogWrite(CBASEG0, 0);
+      analogWrite(CBASEB0, 0);
+    }
-  // The rest of the wall is pulsing.
+    // The rest of the wall is pulsing.
-  analogWrite(CBASER1, brightness);
+    analogWrite(CBASER1, brightness);
-  analogWrite(CBASEG1, brightness);
+    analogWrite(CBASEG1, brightness);
-  analogWrite(CBASEB1, brightness);
+    analogWrite(CBASEB1, brightness);
-  analogWrite(CBASER2, brightness);
+    analogWrite(CBASER2, brightness);
-  analogWrite(CBASEG2, brightness);
+    analogWrite(CBASEG2, brightness);
-  analogWrite(CBASEB2, brightness);
+    analogWrite(CBASEB2, brightness);
-  delay(10);
+    delay(10);
+    brightness = brightness + fadeAmount;
+  }
+}
+void loop() {
+  if (!client.connected()) {
+    Serial.println("Disconnected. Reconnecting....");
+    if(!client.connect("c-info")) {
+      Serial.println("Connection failed");
+    } else {
+      Serial.println("Connection success");
+      if(client.subscribe("user/boarding")) {
+        Serial.println("Subscription 2 successfull");
+      }
+    }
+  }
-  brightness = brightness + fadeAmount;
+  client.loop();
+  Serial.print("fadeCounter: ");
+  Serial.println(fadeCounter);
+  doFade();
+  if (fadeCounter > 0) {
+    fadeCounter--;
+  }
+  delay(800);
 }
 </code>

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