Clean up telnet log

[probonopd]

• All lines coming from the printer should start with <
• All lines sent to the printer should start with >

I do not understand what the following means:

Unhandled line received:`// This does not start with < or > because it is a comment
<T:41.52 E:0 B:29.1 // This has been received by the printer
T:44.16 E:0 B:29.1 // WHAT IS THIS?
T:47.67 E:0 B:29.5 // WHAT IS THIS?

[GMagician]

ok.. that's a weird thing in prusa firmware...

        KEEPALIVE_STATE(NOT_BUSY);
        while ( (target_direction)&&(!cancel_heatup) ? (isHeatingBed()) : (isCoolingBed()&&(CooldownNoWait==false)) )
        {
          if(( millis() - codenum) > 1000 ) //Print Temp Reading every 1 second while heating up.
          {
              if (!farm_mode) {
                  float tt = degHotend(active_extruder);
                  SERIAL_PROTOCOLPGM("T:");
                  SERIAL_PROTOCOL(tt);
                  SERIAL_PROTOCOLPGM(" E:");
                  SERIAL_PROTOCOL((int)active_extruder);
                  SERIAL_PROTOCOLPGM(" B:");
                  SERIAL_PROTOCOL_F(degBed(), 1);
                  SERIAL_PROTOCOLLN("");
              }
                  codenum = millis();

}

if set system not busy and when open a loop waiting for temp...and it report a custom temp message

WOW it is busy to wait temp but it set a no busy state....that may be defined as pure logic!

[probonopd]

Why are some lines not prefixed with <? Are they not coming from the printer?

[GMagician]

yes since there is no ok and is not parsed as a know line it goes to "unhandled"

[GMagician]

..and there no timeout reset... I'm working now to fix this and other issue

[probonopd]

We should make the code more robust by printing everything coming from the printer to telnet, prefixed with <, and reset the "alive" timer. Regardless of what it is. And only thereafter try to do something with it. If we can't do something with the line, we could say "Last line could not be interpreted".