Added character maps, custom character support

chars/CD.chr

@@ -0,0 +1,46 @@
+.**..
+*..*.
+*...*
+*.*.*
+*.*.*
+*...*
+.*..*
+..**.
+-----
+.**..
+**.*.
+*.*.*
+*.*.*
+*.*.*
+*...*
+.*..*
+..**.
+-----
+.**..
+*..*.
+*.***
+*.*.*
+*.*.*
+*...*
+.*..*
+..**.
+-----
+.**..
+*..*.
+*...*
+*.***
+*.***
+*...*
+.*..*
+..**.
+-----
+.**..
+*..*.
+*...*
+*.*.*
+*.*.*
+*..**
+.*.**
+..**.
+-----
+

chars/_blank.chr

@@ -0,0 +1,9 @@
+.....
+.....
+.....
+.....
+.....
+.....
+.....
+.....
+

chars/guitar.chr

@@ -0,0 +1,9 @@
+..#..
+..#..
+..#..
+.###.
+.###.
+#####
+#####
+.###.
+

chars/heart.chr

@@ -0,0 +1,18 @@
+.....
+.*.*.
+*****
+*****
+.***.
+.***.
+..*..
+.....
+-----
+.....
+.*.*.
+*.*.*
+*...*
+.*.*.
+.*.*.
+..*..
+.....
+

chars/mic.chr

@@ -0,0 +1,9 @@
+.....
+.###.
+.###.
+.###.
+..#..
+..#..
+..#..
+.....
+

chars/notes.chr

@@ -0,0 +1,9 @@
+.....
+.####
+.#..#
+.#..#
+.#..#
+##.##
+##.##
+.....
+

rubyX2040.rb

@@ -3,7 +3,7 @@
 require 'rubygems'
 require 'serialport'
 
-WRITE_DELAY = 0.003  # Number of seconds to wait between character bytes.
+WRITE_DELAY = 0.005  # Number of seconds to wait between character bytes.
 INSTRUCTION_DELAY = 0.01  # Number of seconds to wait between instruction bytes.
 ROW_WIDTH = 20  # Number of characters that will fit on a line.
 ROW_OFFSETS = [0x00, 0x40, 0x14, 0x54]  # Offsets for ordering rows correctly.
@@ -20,7 +20,7 @@ def setup
     # Entry mode set; increment cursor direction; do not automatically shift.
     # Cursor/display shift; cursor move.
     # Display On; cursor off; do not blink.
-    "\x38\x06\x10\x0c\x01".split().each do |byte|
+    "\x38\x06\x10\x0c\x01".split.each do |byte|
       send_instruction(byte)
     end
   end
@@ -36,21 +36,21 @@ def set_cursor(pos)
       pos = [row, pos]
     end
     # As an array of [row (1 - 4), column (1 - 20)]
-    send_bytes "\xfe" + (0b10000000 + ROW_OFFSETS[pos[0]-1] + pos[1]-1).chr
+    send_bytes ["\xfe", (0b10000000 + ROW_OFFSETS[pos[0]-1] + pos[1]-1).chr]
   end
 
-  def send_bytes(str, delay=WRITE_DELAY)
+  def send_bytes(bytes, delay=WRITE_DELAY)
     # Send a stream of bytes to the Pertelian.
     # Also, sleep for delay seconds between sending each byte.
-    str.split('').each do |byte|
+    bytes.each do |byte|
       @sp.write byte
       sleep delay
     end
   end
 
   def send_instruction(byte)
     # Send an instruction byte to the Pertelian.
-    send_bytes ["\xfe", byte].to_s, INSTRUCTION_DELAY
+    send_bytes ["\xfe", byte], INSTRUCTION_DELAY
   end
 
   def power(on)
@@ -68,13 +68,27 @@ def clear
     send_instruction("\x01")
   end
 
-  def message(msg)
+  def message(msg, pos=nil)
+    set_cursor(pos) if pos
     # Display a message.
-    send_bytes(msg)
+    send_bytes(msg.split(''))
   end
 
-  def set_custom_character
-    #TODO
+  def load_char(mem_loc, char_data)
+    send_bytes ["\xfe", (0b01000000 + (8 * (mem_loc - 1))).chr]
+    send_bytes char_data
+  end
+
+  def write_char(mem_loc, pos=nil)
+    set_cursor(pos) if pos
+    send_bytes [(mem_loc-1).chr]
+  end
+
+  def load_char_from_file(filename, mem_loc, char_index=1)
+    rows = File.open(filename, 'r').read.split("-----\n")[char_index-1].split("\n")
+    # Map binary data based on presence of '#' character.
+    data = rows.map{|row| row.ljust(5).split('').inject(0b00000){|r, c| r = r << 1; r += 1 if c == "#" || c == "*"; r }.chr}
+    load_char(mem_loc, data)
   end
 end