Module: RS232::Win32

Extended by:

FFI::Library

Defined in:

lib/rs232.rb

Overview

wraps the native Windows API functions for file IO and COMM port found in kernel32.dll

Constant Summary

FILE_SHARE_DELETE =

consts from Windows seven sdk. extract with grep -i “generic_read” *.h from the /Include directory

0x00000004

FILE_SHARE_READ =

0x00000001

FILE_SHARE_WRITE =

0x00000002

FILE_SHARE_ALL =

FILE_SHARE_WRITE | FILE_SHARE_READ | FILE_SHARE_DELETE

GENERIC_READ =

0x80000000

GENERIC_WRITE =

0x40000000

CREATE_NEW =

1

CREATE_ALWAYS =

2

OPEN_EXISTING =

3

OPEN_ALWAYS =

4

FILE_ATTRIBUTE_NORMAL =

0x00000080

Class Method Summary

• .error_check ⇒ Object
• .error_code ⇒ Object

Class Method Details

.error_check ⇒ Object

# File 'lib/rs232.rb', line 133

def self.error_check
  self::GetLastError().tap{ |err| puts "error: %i | 0x%.8x" % [err,err] if err != 0 }
end

.error_code ⇒ Object

# File 'lib/rs232.rb', line 128

def self.error_code
  err = self::GetLastError()
  "error code: %i | 0x%.8x" % [err,err]
end