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--- en:iot-open:remotelab:itt:oledscreen [2018/12/06 06:43] – rim.puks
+++ en:iot-open:remotelab:itt:oledscreen [2020/07/20 09:00] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
-===== OLED display module =====
+===== ITT OLED display module =====
 This laboratory is located in the office of ITT Group in Tallinn, Estonia.
@@ Line 8: / Line 8: @@
 ==== Prerequisites ====
-For this laboratory, the student should understand basic MQTT concepts like topics, broker, subscribing and publishing. Also knowledge about I2C interface is recommended but not mandatory.
+For this laboratory, the student should understand basic MQTT concepts like topics, broker, subscribing and publishing. Also, knowledge about I2C interface is recommended but not mandatory.
 ==== Technical details ====
-This laboratory consists of a OLED display module attached to the ITT IoT controller module. Oled module contains an organic light-emitting diode, that is a light-emitting diode in which the emissive electroluminescent layer is a film of organic compound that emits light in response to an electric current.
+This laboratory consists of an OLED display module attached to the ITT IoT controller module. Oled module contains an organic light-emitting diode, that is a light-emitting diode in which the emissive electroluminescent layer is a film of organic compound that emits light in response to an electric current.
-=== Sensors ===
+=== Sensors ===Relay
 This laboratory does not have any sensors.
@@ Line 42: / Line 42: @@
 ==== Hands-on labs ====
-//List study scenarios (hands-on labs), linking to the Dokuwiki pages with hands-on labs descriptions (there should be a separate page for each scenario). Classify each scenario and refer to the target group using starting keywords:
-  * Beginners
+=== Example code ===
-  * Undergraduates
-  * Masters
+<code c>
-  * Professionals
-Note, assume that more professional group automatically contains less professional ones. Note - use language and as appropriate to the target group, i.e.://
+#include <Arduino.h>
-<code>
+#include <ittiot.h>
-  * Beginners: Elementary operations on the Arduino 2x16 LCD screen.
+#include <Ticker.h>
-  * Undergraduates: Visualizing temperature and humidity on the remote screen.
+#include <ESP8266WiFi.h>
-  * Masters: Using power saving states to limit power consumption.
+#include <SPI.h>
+#include <Wire.h>
+#include <Adafruit_GFX.h>
+#include <Adafruit_SSD1306.h>
+#define OLED_RESET 0  // GPIO0
+Ticker timeTicker;
+Adafruit_SSD1306 display(OLED_RESET);
+// ITT splashs screen bitmap. Generator: http://javl.github.io/image2cpp/
+static const unsigned char PROGMEM logo16_glcd_bmp[] =
+{
+x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xf0,
+x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x10, 0x00, 0x00, 0x00,
+x00, 0x00, 0x00, 0x07, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+x07, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x10, 0x00,
+x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x1f, 0xff, 0xff, 0xc0, 0x00,
+x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00, 0x07,
+x00, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00,
+xc0, 0x00, 0x00, 0x00, 0x07, 0x1f, 0xe3, 0xff, 0xc0, 0x00, 0x00,
+x00, 0x07, 0x1f, 0xe3, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x07, 0x10,
+xe2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x10, 0xe2, 0x00, 0x00,
+x00, 0x00, 0x00, 0x07, 0x10, 0xe2, 0x00, 0x00, 0x00, 0x00, 0x00,
+x07, 0x10, 0xe3, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x07, 0x10, 0xe0,
+x00, 0x00, 0x18, 0x00, 0x00, 0x07, 0x10, 0xe0, 0x00, 0x00, 0x18,
+x00, 0x00, 0x07, 0x10, 0xe0, 0x00, 0x00, 0x18, 0x00, 0x00, 0x07,
+x10, 0xe3, 0xfc, 0xff, 0xf8, 0x00, 0x00, 0x07, 0x10, 0xe3, 0xfc,
+xff, 0xf8, 0x00, 0x00, 0x07, 0x10, 0xe2, 0x1c, 0x80, 0x00, 0x00,
+x00, 0x07, 0x10, 0xe2, 0x1c, 0x80, 0x00, 0x00, 0x00, 0x07, 0x10,
+xe2, 0x1c, 0x80, 0x00, 0x00, 0x00, 0x07, 0x10, 0xe2, 0x1c, 0x80,
+x00, 0x00, 0x00, 0x07, 0x10, 0xe2, 0x1c, 0x80, 0x00, 0x00, 0x00,
+x07, 0x10, 0xe2, 0x1c, 0x80, 0x00, 0x00, 0x00, 0x07, 0x10, 0xe2,
+x1c, 0x80, 0x00, 0x00, 0x00, 0x07, 0xf0, 0xe2, 0x1c, 0x80, 0x00,
+x00, 0x00, 0x00, 0x00, 0xe2, 0x1c, 0x80, 0x00, 0x00, 0x00, 0x00,
+x00, 0xe2, 0x1c, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe2, 0x1c,
+x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe2, 0x1c, 0x80, 0x00, 0x00,
+x00, 0x00, 0x00, 0xe2, 0x1c, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00,
+xe2, 0x1c, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe2, 0x1c, 0x80,
+x00, 0x00, 0x00, 0x00, 0x00, 0xe2, 0x1c, 0x80, 0x00, 0x00, 0x00,
+x00, 0x00, 0xfe, 0x1c, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+x1c, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1c, 0x80, 0x00,
+x00, 0x00, 0x00, 0x00, 0x00, 0x1c, 0x80, 0x00, 0x00, 0x00, 0x00,
+x00, 0x00, 0x1c, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1c,
+x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1c, 0x80, 0x00, 0x00,
+x00, 0x00, 0x00, 0x00, 0x1c, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00,
+x00, 0x1c, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1f, 0x80,
+x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+#if (SSD1306_LCDHEIGHT != 48)
+#error("Height incorrect, please fix Adafruit_SSD1306.h!");
+#endif
+bool isBootModeNormal;
+bool sendDataFlag;
+int i = 0;
+// Ticker library callback, which will occur 0.5 second interval.
+void sendData()
+{
+  sendDataFlag=true;
+}
+// Function started after the connection to the server is established.
+void iot_connected()
+{
+  Serial.println("MQTT connected callback");
+  iot.log("IoT OLED screen example!");
+  isBootModeNormal = true;
+}
+void setup()
+{
+  Serial.begin(115200);
+  Serial.println("Booting");
+  // initialize with the I2C addr 0x3C (for the 64x48)
+  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
+  // Since the buffer is intialized with an Adafruit splashscreen
+  // internally, we should clear it
+  display.clearDisplay();
+  // Load ITT splash screen into buffer
+  display.drawBitmap(0, 0,  logo16_glcd_bmp, 64, 48, 1);
+  // Show image buffer on the display
+  display.display();
+  // Display splashscreen two second
+  delay(2000);
+  // print IoT json config to serial
+  iot.printConfig();
+  // Initialize IoT library
+  iot.setup();
+  // Initialize Ticker interval and callback
+  timeTicker.attach(0.5, sendData);
+}
+void loop()
+{
+  // IoT behind the plan work, it should be periodically called
+  iot.handle();
+  // Increase counter value
+  i++;
+  // Display counter value and boot mode on the OLED screen
+  display.clearDisplay();
+  display.setTextSize(1);
+  display.setTextColor(WHITE);
+  display.setCursor(0,0);
+  display.println("Counter: ");
+  display.println(i);
+  display.setCursor(0,30);
+  if(isBootModeNormal)
+  {
+    display.println("Mode: NORM");
+  }
+  else
+  {
+    display.println("Mode: BOOT");
+  }
+  display.display();
+  // Send counter value to the server
+  if(WiFi.isConnected() && isBootModeNormal)
+  {
+    if(sendDataFlag)
+    {
+      sendDataFlag = false;
+      String msg = String(i);
+      iot.publishMsg("count", msg.c_str());
+      Serial.println(msg);
+    }
+  }
+}
 </code>
 ==== Support ====
-//Give some information on how to access help, how to get support in case of the trouble etc.//
+info@ittgroup.ee

en/iot-open/remotelab/itt/oledscreen.1544078638.txt.gz · Last modified: 2020/07/20 09:00 (external edit)