6 files changed, 578 insertions, 0 deletions
diff --git a/utilities/blinkenrocket.py b/utilities/blinkenrocket.py
new file mode 100644
index 0000000..d16b7cf
--- /dev/null
+++ b/utilities/blinkenrocket.py
@@ -0,0 +1,315 @@
+#!/usr/bin/env python
+
+import sys, wave
+
+class modem:
+
+	# Modem specific constants
+	bits = [[3 * chr(0), 5 * chr(0)], [3 * chr(255), 5 * chr(255)]]
+	sync = [17 * chr(0), 17 * chr(255)]
+	# Variable to alternate high and low
+	hilo = 0
+	supportedFrequencies = [16000,22050,24000,32000,44100,48000]
+	cnt = 0
+	# Data variables
+	data = []
+	parity = True
+	frequency = 48000
+
+	# Hamming code translation table
+	_hammingCalculateParityLowNibble = [0,  3,  5,  6,  6,  5,  3,  0,  7,  4,  2,  1,  1,  2,  4,  7]
+	_hammingCalculateParityHighNibble = [0,  9, 10,  3, 11,  2,  1,  8, 12,  5,  6, 15,  7, 14, 13,  4]
+
+	# Almost nothing here
+	def __init__(self, data=[], parity=True, frequency=48000):
+		self.data = data
+		self.parity = parity
+		self.frequency = frequency if frequency in self.supportedFrequencies else 48000
+		self.cnt = 0
+
+	# Calculate Hamming parity for 12,8 code (12 bit of which 8bit data)
+	def hammingCalculateParity128(self, byte):
+		return self._hammingCalculateParityLowNibble[byte&0x0F] ^ self._hammingCalculateParityHighNibble[byte >> 4]
+
+	# Calculate Hamming parity for 24,16 code (24 bit of which 16 bit are data)
+	def hammingCalculateParity2416(self, first, second):
+		return self.hammingCalculateParity128(second) << 4 | self.hammingCalculateParity128(first)
+
+	# Generate one sync-pulse
+	def syncsignal(self):
+		self.hilo ^= 1
+		return self.sync[self.hilo]
+
+	# Generate a number of sync signals
+	def generateSyncSignal(self, number):
+		sound = ""
+		for i in xrange(number):
+			sound += self.syncsignal()
+		return sound
+
+	# Decode bits to modem signals
+	def modemcode(self, byte):
+		bleep = ""
+		for x in xrange(8):
+			self.hilo ^= 1
+			bleep += self.bits[self.hilo][byte & 0x01]
+			byte >>= 1
+		return bleep
+
+	# Return <length> samples of silence
+	def silence(self, length):
+		return chr(127) * length
+
+	# Set data for modem code
+	def setData(self, data):
+		self.data = data
+
+	# Set whether to use parity or not
+	def setParity(self, parity):
+		self.parity = parity
+
+	# Set the frequency for the audio
+	def setFrequency(self, frequency):
+		self.frequency = frequency if frequency in self.supportedFrequencies else 48000
+
+	# Generates the audio frames based on the data
+	def generateAudioFrames(self):
+		if self.parity:
+			tmpdata = []
+			# for uneven length data, we have to append a null byte
+			if not len(self.data) % 2 == 0:
+				self.data.append(chr(0))
+			# insert the parity information every two bytes, sorry for the heavy casting
+			for index in range(0, len(self.data), 2):
+				tmpdata.extend(self.data[index:index+2])
+				tmpdata.append(chr(self.hammingCalculateParity2416(ord(self.data[index]),ord(self.data[index+1]))))
+			self.data = tmpdata
+		# generate the audio itself
+		# add 1000ms of sync signal before the data
+		# (some sound cards take a while to produce a proper output signal)
+		sound = self.generateSyncSignal(3000)
+		# process the data and insert sync signal every 10 bytes
+		for byte in self.data:
+			sound += self.modemcode(ord(byte))
+			self.cnt += 1
+			if self.cnt == 9: # ! do not send sync inside (byte1 byte2 parity) triples
+				sound += self.generateSyncSignal(4)
+				self.cnt = 0
+		# add some sync signals in the end
+		sound += self.generateSyncSignal(4)
+		return sound
+
+	def saveAudio(self,filename):
+		wav = wave.open(filename, 'wb')
+		wav.setparams((1, 1, self.frequency, 0, "NONE", None))
+		wav.writeframes(self.generateAudioFrames())
+		wav.close()
+
+class Frame( object ):
+	""" Returns the frame information """
+	def getFrameHeader(self):
+		raise NotImplementedError("You should implement this!")
+
+	""" Returns the representation """
+	def getRepresentation(self):
+		raise NotImplementedError("Should have implemented this")
+
+class textFrame(Frame):
+	text = ""
+	speed = 0
+	delay = 0
+	direction = 0
+	# identifier as of message specification: 0001
+	identifier = 0x01
+
+	def __init__(self,text,speed=13,delay=0,direction=0):
+		self.text = text
+		self.setSpeed(speed)
+		self.setDelay(delay)
+		self.setDirection(direction)
+
+	def setSpeed(self,speed):
+		self.speed = speed if speed < 16 else 1
+
+	def setDelay(self,delay):
+		self.delay = delay if delay < 16 else 0
+
+	def setDirection(self,direction):
+		self.direction = direction if direction in [0,1] else 0
+
+	# Frame header: 4 bit type + 12 bit length
+	def getFrameHeader(self):
+		return [chr(self.identifier << 4 | len(self.text) >> 8), chr(len(self.text) & 0xFF) ]
+
+	# Header -> 4bit speed, 4 bit delay, 4 bit direction, 4 bit zero
+	def getHeader(self):
+		return [chr(self.speed << 4 | self.delay), chr(self.direction << 4 | 0x00)]
+
+	def getRepresentation(self):
+		retval = []
+		retval.extend(self.getFrameHeader())
+		retval.extend(self.getHeader())
+		retval.extend(list(self.text))
+		return retval
+
+class animationFrame(Frame):
+	animation = []
+	speed = 0
+	delay = 0
+	# identifier as per specification: 0010	
+	identifier = 0x02
+
+	def __init__(self,animation,speed=13,delay=0):
+		self.setAnimation(animation)
+		self.setSpeed(speed)
+		self.setDelay(delay)
+
+	def setAnimation(self,animation):
+		if len(animation) % 8 is not 0:
+			raise Exception
+		else:
+			self.animation = animation
+
+	def setSpeed(self,speed):
+		self.speed = speed if speed < 16 else 1
+
+	def setDelay(self,delay):
+		self.delay = delay if delay < 16 else 0
+
+	# Frame header: 4 bit type + 12 bit length
+	def getFrameHeader(self):
+		return [chr(self.identifier << 4 | len(self.animation) >> 8), chr(len(self.animation) & 0xFF) ]
+
+	# Header -> 4bit zero, 4bit speed, 4 bit zero, 4 bit direction
+	def getHeader(self):
+		return [chr(self.speed), chr(self.delay)]
+
+	def getRepresentation(self):
+		retval = []
+		retval.extend(self.getFrameHeader())
+		retval.extend(self.getHeader())
+		retval.extend(self.animation)
+		return retval
+
+
+class blinkenrocket():
+
+	eeprom_size = 65536
+	startcode = chr(0x99)
+	patterncode = chr(0xA9)
+	endcode = chr(0x84)
+	frames = []
+
+	def __init__(self,eeprom_size=65536):
+		self.eeprom_size = eeprom_size if eeprom_size < 256*1024*1024 else 65536
+	
+	def addFrame(self, frame):
+		if not isinstance(frame, Frame):
+			raise RuntimeError("Incorrect frame supplied")
+		else:
+			self.frames.append(frame)
+
+	def getMessage(self):
+		output = [self.startcode, self.startcode]
+		for frame in self.frames:
+			output.extend([self.patterncode,self.patterncode])
+			output.extend(frame.getRepresentation())
+		output.extend([self.endcode,self.endcode])
+		return output
+
+
+
+
+if __name__ == '__main__':
+	m = modem(parity=True, frequency=48000)
+	b = blinkenrocket()
+
+	for message in sys.argv[2:]:
+		b.addFrame(textFrame(message, speed=13))
+	b.addFrame(textFrame(" \x04 "))
+	b.addFrame(animationFrame(map(lambda x : chr(x), [0, 0, 0, 0, 0, 0, 0, 0, 255, 255, 255, 255, 255, 255, 255, 255]), speed=0))
+	b.addFrame(animationFrame(map(lambda x : chr(x), [
+	  1,   0,   0,   0,   0,   0,   0,   0,
+	  0,   1,   0,   0,   0,   0,   0,   0,
+	  0,   0,   1,   0,   0,   0,   0,   0,
+	  0,   0,   0,   1,   0,   0,   0,   0,
+	  0,   0,   0,   0,   1,   0,   0,   0,
+	  0,   0,   0,   0,   0,   1,   0,   0,
+	  0,   0,   0,   0,   0,   0,   1,   0,
+	  0,   0,   0,   0,   0,   0,   0,   1,
+	  0,   0,   0,   0,   0,   0,   0,   2,
+	  0,   0,   0,   0,   0,   0,   0,   4,
+	  0,   0,   0,   0,   0,   0,   0,   8,
+	  0,   0,   0,   0,   0,   0,   0,   16,
+	  0,   0,   0,   0,   0,   0,   0,   32,
+	  0,   0,   0,   0,   0,   0,   0,   64,
+	  0,   0,   0,   0,   0,   0,   0,   128,
+	  0,   0,   0,   0,   0,   0, 128,   0,
+	  0,   0,   0,   0,   0, 128,   0,   0,
+	  0,   0,   0,   0, 128,   0,   0,   0,
+	  0,   0,   0, 128,   0,   0,   0,   0,
+	  0,   0, 128,   0,   0,   0,   0,   0,
+	  0, 128,   0,   0,   0,   0,   0,   0,
+	128,   0,   0,   0,   0,   0,   0,   0,
+	 64,   0,   0,   0,   0,   0,   0,   0,
+	 32,   0,   0,   0,   0,   0,   0,   0,
+	 16,   0,   0,   0,   0,   0,   0,   0,
+	  8,   0,   0,   0,   0,   0,   0,   0,
+	  4,   0,   0,   0,   0,   0,   0,   0,
+	  2,   0,   0,   0,   0,   0,   0,   0,
+	  0,   2,   0,   0,   0,   0,   0,   0,
+	  0,   0,   2,   0,   0,   0,   0,   0,
+	  0,   0,   0,   2,   0,   0,   0,   0,
+	  0,   0,   0,   0,   2,   0,   0,   0,
+	  0,   0,   0,   0,   0,   2,   0,   0,
+	  0,   0,   0,   0,   0,   0,   2,   0,
+	  0,   0,   0,   0,   0,   0,   4,   0,
+	  0,   0,   0,   0,   0,   0,   8,   0,
+	  0,   0,   0,   0,   0,   0,  16,   0,
+	  0,   0,   0,   0,   0,   0,  32,   0,
+	  0,   0,   0,   0,   0,   0,  64,   0,
+	  0,   0,   0,   0,   0,  64,   0,   0,
+	  0,   0,   0,   0,  64,   0,   0,   0,
+	  0,   0,   0,  64,   0,   0,   0,   0,
+	  0,   0,  64,   0,   0,   0,   0,   0,
+	  0,  64,   0,   0,   0,   0,   0,   0,
+	  0,  32,   0,   0,   0,   0,   0,   0,
+	  0,  16,   0,   0,   0,   0,   0,   0,
+	  0,   8,   0,   0,   0,   0,   0,   0,
+	  0,   4,   0,   0,   0,   0,   0,   0,
+	  0,   0,   4,   0,   0,   0,   0,   0,
+	  0,   0,   0,   4,   0,   0,   0,   0,
+	  0,   0,   0,   0,   4,   0,   0,   0,
+	  0,   0,   0,   0,   0,   4,   0,   0,
+	  0,   0,   0,   0,   0,   8,   0,   0,
+	  0,   0,   0,   0,   0,  16,   0,   0,
+	  0,   0,   0,   0,   0,  32,   0,   0,
+	  0,   0,   0,   0,  32,   0,   0,   0,
+	  0,   0,   0,  32,   0,   0,   0,   0,
+	  0,   0,  32,   0,   0,   0,   0,   0,
+	  0,   0,  16,   0,   0,   0,   0,   0,
+	  0,   0,   8,   0,   0,   0,   0,   0,
+	  0,   0,   0,   8,   0,   0,   0,   0,
+	  0,   0,   0,   0,   8,   0,   0,   0,
+	  0,   0,   0,   0,  16,   0,   0,   0,
+	  0,   0,   0,  16,   0,   0,   0,   0,
+	  0,   0,   0,  24,  24,   0,   0,   0,
+	  0,   0,  60,  36,  36,  60,   0,   0,
+	  0, 126,  66,  66,  66,  66, 126,   0,
+	255, 129, 129, 129, 129, 129, 129, 255,
+	  0,   0,   0,   0,   0,   0,   0,   0,
+	]), speed=15, delay=1))
+	b.addFrame(animationFrame(map(lambda x : chr(x), [
+	  0,   0,   0,  24,  24,   0,   0,   0,
+	  0,   0,  60,  36,  36,  60,   0,   0,
+	  0, 126,  66,  66,  66,  66, 126,   0,
+	255, 129, 129, 129, 129, 129, 129, 255,
+	  0,   0,   0,   0,   0,   0,   0,   0,
+	]), speed=14, delay=1))
+
+	m.setData(b.getMessage())
+	m.saveAudio(sys.argv[1])
+
+	#print b.getMessage()
+
+
diff --git a/utilities/flasher.py b/utilities/flasher.py
new file mode 100644
index 0000000..b39d913
--- /dev/null
+++ b/utilities/flasher.py
@@ -0,0 +1,78 @@
+#!/usr/bin/python
+
+import sys
+import os
+from termcolor import colored
+
+try:
+    import tty, termios
+except ImportError:
+    try:
+        import msvcrt
+    except ImportError:
+        raise ImportError('getch not available')
+    else:
+        getch = msvcrt.getch
+else:
+    def getch():
+        """getch() -> key character
+
+        Read a single keypress from stdin and return the resulting character. 
+        Nothing is echoed to the console. This call will block if a keypress 
+        is not already available, but will not wait for Enter to be pressed. 
+
+        If the pressed key was a modifier key, nothing will be detected; if
+        it were a special function key, it may return the first character of
+        of an escape sequence, leaving additional characters in the buffer.
+        """
+        fd = sys.stdin.fileno()
+        old_settings = termios.tcgetattr(fd)
+        try:
+            tty.setraw(fd)
+            ch = sys.stdin.read(1)
+        finally:
+            termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
+        return ch
+
+code_okay = """
+ #######  ##    ##    ###    ##    ## 
+##     ## ##   ##    ## ##    ##  ##  
+##     ## ##  ##    ##   ##    ####   
+##     ## #####    ##     ##    ##    
+##     ## ##  ##   #########    ##    
+##     ## ##   ##  ##     ##    ##    
+ #######  ##    ## ##     ##    ##  
+"""
+
+code_error = """
+######## ########  ########   #######  ########  
+##       ##     ## ##     ## ##     ## ##     ## 
+##       ##     ## ##     ## ##     ## ##     ## 
+######   ########  ########  ##     ## ########  
+##       ##   ##   ##   ##   ##     ## ##   ##   
+##       ##    ##  ##    ##  ##     ## ##    ##  
+######## ##     ## ##     ##  #######  ##     ## 
+"""
+
+def printOkay():
+	print colored(code_okay, 'green')
+
+def printError():
+	print colored(code_error, 'red')
+
+flash_command = sys.argv[1]
+
+print colored("Using the following command to flash: %s" % flash_command, "green")
+
+while True:
+	print colored("Press any key to continue or 'q' to quit.","yellow")
+	char = getch()
+	print char
+	if ord(char) is ord('q'):
+		sys.exit(0)
+	return_code = os.system(flash_command)
+	if return_code > 0:
+		printError()
+	else:
+		printOkay()
+
diff --git a/utilities/font_to_json.py b/utilities/font_to_json.py
new file mode 100644
index 0000000..6d1b667
--- /dev/null
+++ b/utilities/font_to_json.py
@@ -0,0 +1,27 @@
+#!/usr/bin/python
+
+import sys
+import os
+import re
+import json
+
+result = {}
+
+with open('font.h') as font:
+	for line in font:
+		if 'PROGMEM' in line:
+			hexes = re.findall(r'(0x[0-9a-fA-F]+)',line)
+			contents = hexes[1:]
+			length = len(contents)
+			literal = int(re.findall(r'chr_([0-9]+)',line)[0])
+			description = re.findall(r'\/\/(.*)$',line)[0].strip()
+			#for row in contents:
+			#	print '{0:08b}'.format(int(row,16)) #.replace("1",u"\u2588").replace("0",u"\u25A2")
+			result[str(literal)] = {
+				'literal' : literal,
+				'description' : description,
+				'hexcolumns' : contents,
+				'length' : length
+			}
+
+print json.dumps(result)
diff --git a/utilities/mirror_font.py b/utilities/mirror_font.py
new file mode 100644
index 0000000..db5b5c3
--- /dev/null
+++ b/utilities/mirror_font.py
@@ -0,0 +1,25 @@
+#!/usr/bin/python
+
+import sys
+import os
+import re
+import json
+
+result = {}
+
+with open('font.h') as font:
+	for line in font:
+		if 'PROGMEM' in line:
+			hexes = re.findall(r'(0x[0-9a-fA-F]+)',line)
+			prefix = hexes[:1]
+			contents = hexes[1:]
+			length = len(contents)
+			literal = int(re.findall(r'chr_([0-9]+)',line)[0])
+			description = re.findall(r'\/\/(.*)$',line)[0].strip()
+			newhexes = []
+			newhexes.append(prefix[0])
+			for row in contents:
+				bitstring = '{0:08b}'.format(int(row,16))
+				newbits = bitstring[::-1]
+				newhexes.append( format(int(newbits,2), '#04x'))
+			print "const unsigned char PROGMEM chr_%s[] = {%s}; // %s" % (literal,','.join(newhexes),description)
diff --git a/utilities/modem_transmit b/utilities/modem_transmit
new file mode 100755
index 0000000..bb18850
--- /dev/null
+++ b/utilities/modem_transmit
@@ -0,0 +1,16 @@
+#!/bin/sh
+
+OUT="$(mktemp)"
+trap "rm -f '$OUT'" EXIT INT QUIT TERM
+
+python blinkenrocket.py $OUT "$@"
+
+case "$(uname -s)" in
+Darwin)
+    play $OUT
+    ;;
+Linux)
+    aplay $OUT
+    ;;
+esac
+
diff --git a/utilities/test_blinkenrocket.py b/utilities/test_blinkenrocket.py
new file mode 100644
index 0000000..62bd0e3
--- /dev/null
+++ b/utilities/test_blinkenrocket.py
@@ -0,0 +1,117 @@
+#!/usr/bin/python
+import unittest
+from blinkenrocket import *
+
+class TestFrame(unittest.TestCase):
+
+  def test_notImplemented(self):
+      frame = Frame()
+      with self.assertRaises(NotImplementedError):
+        frame.getRepresentation()
+
+class TestAnimation(unittest.TestCase):
+
+  def test_speedDefault(self):
+    anim = animationFrame([])
+    self.assertEquals(ord(anim.getHeader()[0]),1)
+
+  def test_speedOkay(self):
+    anim = animationFrame([],speed=7)
+    self.assertEquals(ord(anim.getHeader()[0]),7)
+
+  def test_speedNotOkay(self):
+    anim = animationFrame([],speed=70)
+    self.assertEquals(ord(anim.getHeader()[0]),1)
+
+  def test_delayDefault(self):
+    anim = animationFrame([])
+    self.assertEquals(ord(anim.getHeader()[1]),0)
+
+  def test_delayOkay(self):
+    anim = animationFrame([],delay=7)
+    self.assertEquals(ord(anim.getHeader()[1]),7)
+
+  def test_delayNotOkay(self):
+    anim = animationFrame([],delay=70)
+    self.assertEquals(ord(anim.getHeader()[1]),0)
+
+  def test_illegalLength(self):
+    with self.assertRaises(Exception):
+      anim = animationFrame([0x11,0x12,0x13,0x14])
+
+  def test_allowedLength(self):
+    anim = animationFrame([0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18])
+
+  def test_defaultHeaderOK(self):
+    anim = animationFrame([])
+    self.assertEquals(anim.getHeader(),[chr(1),chr(0)])
+
+  def test_differentHeaderOK(self):
+    anim = animationFrame([],speed=7,delay=8)
+    self.assertEquals(anim.getHeader(),[chr(7),chr(8)])
+
+class TestText(unittest.TestCase):
+
+  def test_speedDefault(self):
+    text = textFrame([])
+    self.assertEquals(ord(text.getHeader()[0]),(1 << 4 | 0))
+
+  def test_speedOkay(self):
+    text = textFrame([],speed=7)
+    self.assertEquals(ord(text.getHeader()[0]),(7 << 4 | 0))
+
+  def test_speedNotOkay(self):
+    text = textFrame([],speed=70)
+    self.assertEquals(ord(text.getHeader()[0]),(1 << 4 | 0))
+
+  def test_delayDefault(self):
+    text = textFrame([])
+    self.assertEquals(ord(text.getHeader()[0]),(1 << 4 | 0))
+
+  def test_delayOkay(self):
+    text = textFrame([],delay=7)
+    self.assertEquals(ord(text.getHeader()[0]),(1 << 4 | 7))
+
+  def test_delayNotOkay(self):
+    text = textFrame([],delay=70)
+    self.assertEquals(ord(text.getHeader()[0]),(1 << 4 | 0))
+
+  def test_directionDefault(self):
+    text = textFrame([])
+    self.assertEquals(ord(text.getHeader()[1]),0)
+
+  def test_directionOkay(self):
+    text = textFrame([],direction=1)
+    self.assertEquals(ord(text.getHeader()[1]),(1 << 4 | 0))
+
+  def test_directionNotOkay(self):
+    text = textFrame([],direction=7)
+    self.assertEquals(ord(text.getHeader()[1]),0)
+
+  def test_defaultHeaderOK(self):
+    text = textFrame([])
+    self.assertEquals(text.getHeader(),[chr(1 << 4 | 0),chr(0)])
+
+  def test_differentHeaderOK(self):
+    text = textFrame([],speed=7,delay=8,direction=1)
+    self.assertEquals(text.getHeader(),[chr(7 << 4 | 8),chr(1 << 4 | 0)])
+
+class TestBlinkenrocket(unittest.TestCase):
+
+  def test_addFrameFail(self):
+    br = blinkenrocket()
+    with self.assertRaises(Exception):
+      br.addFrame([])
+
+  def test_addFrameText(self):
+    text = textFrame("MUZY",speed=7,delay=8,direction=1)
+    self.assertEquals(text.getFrameHeader(),[chr(0x01 << 4), chr(4)])
+    self.assertEquals(text.getHeader(),[chr(7 << 4 | 8),chr(1 << 4 | 0)])
+    self.assertEquals(text.getRepresentation(),[chr(0x01 << 4), chr(4),chr(7 << 4 | 8),chr(1 << 4 | 0),'M','U','Z','Y'])
+    br = blinkenrocket()
+    br.addFrame(text)
+    expect = [chr(0x99),chr(0x99),chr(0xA9),chr(0xA9),chr(0x01 << 4), chr(4),chr(7 << 4 | 8),chr(1 << 4 | 0),'M','U','Z','Y',chr(0x84),chr(0x84)]
+    self.assertEquals(br.getMessage(),expect)
+
+if __name__ == '__main__':
+    unittest.main()