git.zerfleddert.de Git - fnordlicht-mini/blob - firmware/tests/flash_file.rb

   1 #!/usr/bin/env ruby
   2
   3 $:.unshift(File.dirname(__FILE__)+"/lib")
   4
   5 require 'fnordlicht'
   6 require 'serialport'
   7
   8 include Fnordlicht
   9
  10 $dev = SerialPort.new("/dev/ttyUSB0", 19200)
  11
  12 def crc16_update(crc, data)
  13     return nil if crc < 0 || crc > 0xffff
  14     return nil if data < 0 || data > 255
  15
  16     crc ^= data
  17     0.upto(7) do |i|
  18         if crc % 2 == 1
  19              crc = (crc >> 1) ^ 0xA001
  20         else
  21              crc = (crc >> 1)
  22         end
  23     end
  24
  25     return crc
  26 end
  27
  28
  29 def compute_checksum(data)
  30     checksum  = 0xffff
  31
  32     data.each_byte do |b|
  33         checksum = crc16_update(checksum, b)
  34     end
  35
  36     return checksum
  37 end
  38
  39 if ARGV.length != 2
  40     $stderr.puts "usage: %s ADDRESS FILE" % $0
  41     exit 1
  42 end
  43
  44 address = ARGV.shift.to_i
  45 file = ARGV.shift
  46
  47 puts "sending sync sequence"
  48 sync()
  49
  50 puts "flash"
  51 open(file, 'r') do |f|
  52     puts "configure bootloader"
  53     boot_config(address, 0)
  54     loop do
  55         d = f.read(512)
  56         break if d.nil?
  57         puts "writing chunk (%s bytes)" % d.length
  58
  59         boot_init(address);
  60         d.split('').each_slice(13) do |s|
  61             boot_data(address, s.join(''))
  62             #sleep 0.05
  63         end
  64         checksum = compute_checksum(d)
  65         boot_crc_check(address, d.length, checksum, 5);
  66
  67         puts "flashing..."
  68         boot_flash(address)
  69         sleep 0.3
  70
  71         break if d.length < 512
  72     end
  73 end
  74
  75 data = ""
  76 open(file, 'r') do |f|
  77     d = f.read()
  78     break if d.nil?
  79     data += d
  80 end
  81 checksum = compute_checksum(data)
  82 puts "verifying checksum (%u bytes): 0x%04x" % [data.length, checksum]
  83 boot_crc_flash(address, 0, data.length, checksum, 50)
  84 puts "done"