Module: AlphaSign::Protocol

Included in:
AlphaSign
Defined in:
lib/alphasign/protocol.rb

Overview

These are a pile of constants for the protocol functions

See Also:

Defined Under Namespace

Classes: AlphaFile

Constant Summary collapse

Baud =

Serial config

9600
DataBits = 
7
Parity = 
SerialPort::EVEN
StopBits = 
2
Preamble =

this was much more complex in original, but due to packing spec effectively reduced to this, and remains voodoo but apparently necessary voodoo

[ ']', ']'].pack('x10ax10a')
StartHeader =

everything starts with this, nulls are to auto set baud on unit

Preamble + [ 0x01 ].pack('x20C')
StartCMD =

only handlers for :wtxt implemented so far

{
  :wtxt => [ 0x02, 'A' ].pack('CA'), # write text file
  :rtxt => [ 0x02, 'B' ].pack('CA'), # read text file
  :wfctn => [ 0x02, 'E' ].pack('CA'), # write special function
  :rfctn => [ 0x02, 'F' ].pack('CA'), # read special function
  :wstr => [ 0x02, 'G' ].pack('CA'), # write string file
  :rstr => [ 0x02, 'H' ].pack('CA'), # read string file
  :wdots => [ 0x02, 'I' ].pack('CA'), # write DOTS picture file
  :rdots => [ 0x02, 'J' ].pack('CA'), # read DOTS picture file
  :wadots => [ 0x02, 'M' ].pack('CA'), # write ALPHAVISON DOTS picture file
  :radots => [ 0x02, 'N' ].pack('CA'), # read ALPHAVISON DOTS picture file
  :bulletin => [ 0x02, 'O' ].pack('CA'), # write bulletin message
}
FileType =

FileType is used in allocating sign memory

{
  :txt => "A", # Text file
  :str => "B", # String file
  :dot => "D", # Dots picture file
}
[0x04].pack("C")