serial VFD Display + Arduino Uno = Rhythmbox Titelanzeige

 seriel VFD Display an TX-Output vom Arduino Uno.


Status: Funktioniert nur bei getsratetem Seriellen Monitor!

falls abgestürzt in der Konsole unter root Port freigeben

sudo bash
rm /var/lock/LCK..ttyACM1


To Do: Interpret, Song trennen auf zwei zeilen ausgeben ggf. scrollen




 Arduino Sketch:


/*
Sketch um Rhythmbox Infos auf VFD auzusgeben.

 rb-lcd.py Skript starten!!
 
*/


const int numCols = 20;
const int numRows = 2;
int i;
int empty;


////////////


void setup()
{
  Serial.begin(9600);
  Serial.write(0x04); //DIM
  //Serial.write(0x09); //HT
  //Serial.write(0x11); //DC1

}

void loop()
{

  if (Serial.available()) {
    delay(100);
    Serial.write(0x1B); //ESC
    Serial.write((byte)0x00); //Cursor 0,0


      while (Serial.available() > 0) {  
      Serial.write(Serial.read());
      delay(100);
      i++;

      if (i == (numCols * numRows)) {
        i = 0;
        // this to clear the rest of the serial I/O
        while (Serial.available() > 0) {
          empty = Serial.read();
        }
      
      }
    }
  }
}








Phyton Skript:

#!/usr/bin/python
#Created By Patrick van der Leer a.k.a. Junke
#
#

### CONFIG ###
dev = "/dev/ttyACM0"    # path to the arduino
rows = 2                # number of rows of your LCD
cols = 20               # number of cols of your LCD

###
import os, time
#from subprocess import Popen, PIPE

message = " "
song = "  "

def display():
  error = os.system('echo "%s" >> %s' %(message,dev,))
  if error == 0:
    print "Song '%s'" %(message,)
  else:
    print "Failed to display '%s'" %(message,)


### loop ###
while True:
  p = os.popen('rhythmbox-client --print-playing')
  song = p.readline()
  p.close()
  song = song[:-1]
  while len(song) < (rows * cols): # to make sure the arduino doesnt
    song += " "                    # fill the rest up with black
  if song != message:
     message = song
     display()
  time.sleep(5)