My attempts at transferring BLYNK_PRINT to Various Displays

Projects made with Blynk
27

And my latest addition to this Blynk Serial Display phase I am on…

The TTG ESP32 with OLED & 18650

Tiny screen, but good resolution (128x64)… hard to focus up close :slight_smile:

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2018-03-29 17.58.48.jpg1426×2045 853 KB

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2018-03-29 17.58.39.jpg1781×2080 1.03 MB 

//#define BLYNK_DEBUG
#define BLYNK_MAX_READBYTES 1024
#define BLYNK_MSG_LIMIT 0
#define BLYNK_HEARTBEAT 60
#define BLYNK_NO_BUILTIN  // Disable Blynk's built-in analog & digital pin operations

#include <U8g2lib.h>  // For OLED
U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0,/* reset=*/ U8X8_PIN_NONE,/* clock=*/ 4, /* data=*/ 5);   // The all important setup for the TTGO's build in OLED

// Define a custom console for OLED debug output
class CustomConsole
  : public Print // This automatically adds functions like .println()
{
  public:
    CustomConsole() {}
    virtual size_t write(uint8_t ch) {  // Grabs character from print
      u8g2.print(char(ch));  // Add character to OLED buffer
      Serial.print(char(ch));  // Repeat all character output to Serial monitor
      if (ch == '\n') {  // End of line check
        u8g2.sendBuffer();  // Dump buffer to OLED
        line += height;  // Increment next line down
        if (line >= 72) {
          line = height;  // Reset line counter
        }
        u8g2.sendBuffer();  // Dump buffer to OLED
        u8g2.setCursor(0, line);  // Set curser to next line down
      }
      return 1; // Processed 1 character
    }
  private:
    // define variables used in myConsole
    int line = 8;  // line counter
    int height = 8;  // Line pixel height
};

// initiate myConsole
CustomConsole myConsole;

#define BLYNK_PRINT myConsole

#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <ESPmDNS.h>  // For OTA
#include <WiFiUdp.h>  // For OTA
#include <ArduinoOTA.h>  // For OTA
#include <TimeLib.h>
#include <WidgetRTC.h>

char auth[] = "xxxxxxxxxx";
char ssid[] = "xxxxxxxxxx";
char pass[] = "xxxxxxxxxx";
char server[] = "10.10.3.13";
int port = 8080;

char currentTime[9];
char currentDate[11];

BlynkTimer timer;
WidgetRTC rtc;



void setup() {
  pinMode(16, OUTPUT);
  u8g2.setFont(u8g2_font_micro_mr);  // choose a suitable font for Logo
  Serial.begin(115200);
  u8g2.begin();

  timer.setInterval(1010L, TimeDatecheck);
  timer.setInterval(2030L, RSSIcheck);
  timer.setInterval(3045L, FlashLED);

  WiFi.begin(ssid, pass);
  Blynk.config(auth, server, port);
  Blynk.connect();

  ArduinoOTA.setHostname("TTGO - OLED & 18650");  // For OTA
  ArduinoOTA.begin();  // For OTA
}



BLYNK_CONNECTED() {
  rtc.begin();
  setSyncInterval(360);  // Time Sync
}



void loop() {
  ArduinoOTA.handle();  // For OTA
  timer.run();
  Blynk.run();
}

//--------------------------------------------------//

void TimeDatecheck() {
  sprintf(currentTime, "%02d:%02d:%02d", hour(), minute(), second());
  sprintf(currentDate, "%02d/%02d/%04d", month(), day(), year());
  myConsole.print(currentTime);
  myConsole.print("  ");
  myConsole.print(currentDate);
  myConsole.println("                    ");
}



void RSSIcheck() {
  Blynk.virtualWrite(V67, WiFi.RSSI()); // RSSI
  //myConsole.print("Board #1 - RSSI  ");
  myConsole.print("Board #2 - RSSI  ");
  myConsole.print(WiFi.RSSI());
  myConsole.println("                    ");
}



void FlashLED() {
  digitalWrite(16, LOW);  // Turn ON
  delay(100);
  digitalWrite(16, HIGH);  // Turn OFF
}
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