Is there a way to use two LCDs with this script that uses TelNet to add strings to the screens?
#!/usr/bin/env python
import telnetlib;
import time;
import os;
import subprocess;
host='127.0.0.1';
port='13666';
data = ""
tn = telnetlib.Telnet(host, port)
tn.write("hello\r");
data += tn.read_until("\n");
tn.write("screen_add my_screen\n");
data += tn.read_until("\n");
tn.write("screen_set my_screen 1 -heartbeat off\n");
data += tn.read_until("\n");
tn.write("widget_add my_screen 1 scroller\n");
data += tn.read_until("\n");
tn.write("widget_add my_screen 2 scroller\n");
data += tn.read_until("\n");
var = 1;
while var == 1 :
cmd1 = "mpc | head -1" #gets the currently playing song from mpc
process = subprocess.Popen(cmd1, stdout=subprocess.PIPE , shell=True)
os.waitpid(process.pid, 0)[1]
mpc_song = process.stdout.read().strip()
cmd2 = "mpc | grep vol | cut -d% -f1 | sed 's/[^0-9]*//g'" #gets the volume level from mpc
process = subprocess.Popen(cmd2, stdout=subprocess.PIPE , shell=True)
os.waitpid(process.pid, 0)[1]
mpc_vol = process.stdout.read().strip()
cmd3 = "mpc | head -2 | tail -1 | awk '{print $1}'" # gets the player state ie paused playing etc
process = subprocess.Popen(cmd3, stdout=subprocess.PIPE , shell=True)
os.waitpid(process.pid, 0)[1]
mpc_state = process.stdout.read().strip()
cmd4 = "hostname -I" #gets the current ip of the boombox
process = subprocess.Popen(cmd4, stdout=subprocess.PIPE , shell=True)
os.waitpid(process.pid, 0)[1]
ip_addr = process.stdout.read().strip()
cmd5 = "netstat -t | grep rfe" #check if a user is connected via airplay
process = subprocess.Popen(cmd5, stdout=subprocess.PIPE , shell=True)
os.waitpid(process.pid, 0)[1]
airplay = process.stdout.read().strip()
cmd6 = "iwconfig wlan0 | grep Signal | awk '{print $4}' | cut -d= -f2" #check wifi signal strength
process = subprocess.Popen(cmd6, stdout=subprocess.PIPE , shell=True)
os.waitpid(process.pid, 0)[1]
wifi_strength = process.stdout.read().strip()
if airplay: ##If airplay is in use, pause MPC and display Airplay Mode on LCD else display mpc data as normal
mpc_pause = "mpc pause"
process = subprocess.Popen(mpc_pause, stdout=subprocess.PIPE , shell=True)
tn.write("widget_set my_screen 1 1 1 16 1 m 5 \"Airplay Mode\"\n");
data += tn.read_until("\n");
else:
tn.write("widget_set my_screen 1 1 1 16 1 m 8 \"%s \" \n" % (mpc_song));
data += tn.read_until("\n");
timenow = time.strftime('%H:%M');
tn.write("widget_set my_screen 2 1 2 16 2 m 4 \"Time:%s | Vol:%s | IP:%s | Signal: %s \"\n" % (timenow, mpc_vol,ip_addr,wifi_strength));
data += tn.read_until("\n");
time.sleep(5)
It looks really great but I don't know how to use it if you have 2 screens. Currently I am using the Pi pins for this script. But i have a MCP23017 so i can use that for the two screens.
