hack: switch out (buggy) ruby serial port gem for python serial port …

…proxy

lib/xbee/packet.rb

@@ -165,17 +165,7 @@ def _parse_digital_samples
     end
 
     def _read_packet(serial)
-      start = Time.now
-      i = 1
-      until Time.now - start > 6
-        if serial.getc == START_IOPACKET
-          lengthMSB = serial.getc
-          lengthLSB = serial.getc
-          length = (lengthLSB + (lengthMSB << 8)) + 1
-
-          return Array.new(length) { serial.getc }
-        end
-      end
+      serial.gets.split(" ").map {|byte| byte.to_i}
     end
   end
 end

power_hungry.rb

@@ -1,5 +1,4 @@
 require 'rubygems'
-require 'serialport'
 
 require 'lib/power_hungry/config'
 require 'lib/power_hungry/history'
@@ -9,7 +8,7 @@
 
 class PowerHungry
   def initialize
-    @serial = SerialPort.new(Config.serial_port)
+    @serial = IO.popen("python serial_proxy.py #{Config.serial_port}")
   end
 
   def debug

serial_proxy.py

@@ -19,12 +19,12 @@ def find_packet(serial):
     sys.exit(["Required arg: serial dev (eg /dev/ttyUSB0)"])
 
 serial_dev = sys.argv[1]
-print("opening " + serial_dev)
 serial = serial.Serial(serial_dev, 9600)
 serial.open()
 
 while True:
     packet = find_packet(serial)
     if packet:
-        packet_bytes = [hex(ord(byte)) for byte in packet]
+        packet_bytes = [str(ord(byte)) for byte in packet]
         print(string.join(packet_bytes, " "))
+        sys.stdout.flush()