""" Set of ESC/POS Commands (Constants) This module contains constants that are described in the esc/pos-documentation. Since there is no definitive and unified specification for all esc/pos-like printers the constants could later be moved to `capabilities` as in `escpos-php by @mike42 `_. :author: `Manuel F Martinez `_ and others :organization: Bashlinux and `python-escpos `_ :copyright: Copyright (c) 2012 Bashlinux :license: GNU GPL v3 """ # Control characters # as labelled in http://www.novopos.ch/client/EPSON/TM-T20/TM-T20_eng_qr.pdf NUL = '\x00' EOT = '\x04' ENQ = '\x05' DLE = '\x10' DC4 = '\x14' CAN = '\x18' ESC = '\x1b' FS = '\x1c' GS = '\x1d' # Feed control sequences CTL_LF = '\n' # Print and line feed CTL_FF = '\f' # Form feed CTL_CR = '\r' # Carriage return CTL_HT = '\t' # Horizontal tab CTL_SET_HT = ESC + '\x44' # Set horizontal tab positions CTL_VT = '\v' # Vertical tab # Printer hardware HW_INIT = ESC + '@' # Clear data in buffer and reset modes HW_SELECT = ESC + '=\x01' # Printer select HW_RESET = ESC + '\x3f\x0a\x00' # Reset printer hardware # (TODO: Where is this specified?) #{ Cash Drawer (ESC p ) _CASH_DRAWER = lambda m, t1='', t2='': ESC + 'p' + m + chr(t1) + chr(t2) CD_KICK_2 = _CASH_DRAWER('\x00', 50, 50) # Sends a pulse to pin 2 [] CD_KICK_5 = _CASH_DRAWER('\x01', 50, 50) # Sends a pulse to pin 5 [] # Paper Cutter _CUT_PAPER = lambda m: GS + 'V' + m PAPER_FULL_CUT = _CUT_PAPER('\x00') # Full cut paper PAPER_PART_CUT = _CUT_PAPER('\x01') # Partial cut paper # Text format # TODO: Acquire the "ESC/POS Application Programming Guide for Paper Roll # Printers" and tidy up this stuff too. TXT_NORMAL = ESC + '!\x00' # Normal text TXT_2HEIGHT = ESC + '!\x10' # Double height text TXT_2WIDTH = ESC + '!\x20' # Double width text TXT_4SQUARE = ESC + '!\x30' # Quad area text TXT_UNDERL_OFF = ESC + '\x2d\x00' # Underline font OFF TXT_UNDERL_ON = ESC + '\x2d\x01' # Underline font 1-dot ON TXT_UNDERL2_ON = ESC + '\x2d\x02' # Underline font 2-dot ON TXT_BOLD_OFF = ESC + '\x45\x00' # Bold font OFF TXT_BOLD_ON = ESC + '\x45\x01' # Bold font ON TXT_FONT_A = ESC + '\x4d\x00' # Font type A TXT_FONT_B = ESC + '\x4d\x01' # Font type B TXT_ALIGN_LT = ESC + '\x61\x00' # Left justification TXT_ALIGN_CT = ESC + '\x61\x01' # Centering TXT_ALIGN_RT = ESC + '\x61\x02' # Right justification # Char code table CHARCODE_PC437 = ESC + '\x74\x00' # USA: Standard Europe CHARCODE_JIS = ESC + '\x74\x01' # Japanese Katakana CHARCODE_PC850 = ESC + '\x74\x02' # Multilingual CHARCODE_PC860 = ESC + '\x74\x03' # Portuguese CHARCODE_PC863 = ESC + '\x74\x04' # Canadian-French CHARCODE_PC865 = ESC + '\x74\x05' # Nordic CHARCODE_WEU = ESC + '\x74\x06' # Simplified Kanji, Hirakana CHARCODE_GREEK = ESC + '\x74\x07' # Simplified Kanji CHARCODE_HEBREW = ESC + '\x74\x08' # Simplified Kanji CHARCODE_PC1252 = ESC + '\x74\x11' # Western European Windows Code Set CHARCODE_PC866 = ESC + '\x74\x12' # Cirillic #2 CHARCODE_PC852 = ESC + '\x74\x13' # Latin 2 CHARCODE_PC858 = ESC + '\x74\x14' # Euro CHARCODE_THAI42 = ESC + '\x74\x15' # Thai character code 42 CHARCODE_THAI11 = ESC + '\x74\x16' # Thai character code 11 CHARCODE_THAI13 = ESC + '\x74\x17' # Thai character code 13 CHARCODE_THAI14 = ESC + '\x74\x18' # Thai character code 14 CHARCODE_THAI16 = ESC + '\x74\x19' # Thai character code 16 CHARCODE_THAI17 = ESC + '\x74\x1a' # Thai character code 17 CHARCODE_THAI18 = ESC + '\x74\x1b' # Thai character code 18 # Barcode format _SET_BARCODE_TXT_POS = lambda n: GS + 'H' + n BARCODE_TXT_OFF = _SET_BARCODE_TXT_POS('\x00') # HRI barcode chars OFF BARCODE_TXT_ABV = _SET_BARCODE_TXT_POS('\x01') # HRI barcode chars above BARCODE_TXT_BLW = _SET_BARCODE_TXT_POS('\x02') # HRI barcode chars below BARCODE_TXT_BTH = _SET_BARCODE_TXT_POS('\x03') # HRI both above and below _SET_HRI_FONT = lambda n: GS + 'f' + n BARCODE_FONT_A = _SET_HRI_FONT('\x00') # Font type A for HRI barcode chars BARCODE_FONT_B = _SET_HRI_FONT('\x01') # Font type B for HRI barcode chars BARCODE_HEIGHT = GS + 'h' # Barcode Height [1-255] BARCODE_WIDTH = GS + 'w' # Barcode Width [2-6] #NOTE: This isn't actually an ESC/POS command. It's the common prefix to the # two "print bar code" commands: # - "GS k NUL" # - "GS k " # The latter command supports more barcode types _SET_BARCODE_TYPE = lambda m: GS + 'k' + m BARCODE_UPC_A = _SET_BARCODE_TYPE('\x00') # Barcode type UPC-A BARCODE_UPC_E = _SET_BARCODE_TYPE('\x01') # Barcode type UPC-E BARCODE_EAN13 = _SET_BARCODE_TYPE('\x02') # Barcode type EAN13 BARCODE_EAN8 = _SET_BARCODE_TYPE('\x03') # Barcode type EAN8 BARCODE_CODE39 = _SET_BARCODE_TYPE('\x04') # Barcode type CODE39 BARCODE_ITF = _SET_BARCODE_TYPE('\x05') # Barcode type ITF BARCODE_NW7 = _SET_BARCODE_TYPE('\x06') # Barcode type NW7 # Image format # NOTE: _PRINT_RASTER_IMG is the obsolete ESC/POS "print raster bit image" # command. The constants include a fragment of the data's header. _PRINT_RASTER_IMG = lambda data: GS + 'v0' + data S_RASTER_N = _PRINT_RASTER_IMG('\x00') # Set raster image normal size S_RASTER_2W = _PRINT_RASTER_IMG('\x01') # Set raster image double width S_RASTER_2H = _PRINT_RASTER_IMG('\x02') # Set raster image double height S_RASTER_Q = _PRINT_RASTER_IMG('\x03') # Set raster image quadruple # Printing Density PD_N50 = GS + '\x7c\x00' # Printing Density -50% PD_N37 = GS + '\x7c\x01' # Printing Density -37.5% PD_N25 = GS + '\x7c\x02' # Printing Density -25% PD_N12 = GS + '\x7c\x03' # Printing Density -12.5% PD_0 = GS + '\x7c\x04' # Printing Density 0% PD_P50 = GS + '\x7c\x08' # Printing Density +50% PD_P37 = GS + '\x7c\x07' # Printing Density +37.5% PD_P25 = GS + '\x7c\x06' # Printing Density +25% PD_P12 = GS + '\x7c\x05' # Printing Density +12.5%