""" ESC/POS Commands (Constants) """ # Feed control sequences CTL_LF = '\x0a' # Print and line feed CTL_FF = '\x0c' # Form feed CTL_CR = '\x0d' # Carriage return CTL_HT = '\x09' # Horizontal tab CTL_SET_HT = '\x1b\x44' # Set horizontal tab positions CTL_VT = '\x1b\x64\x04' # Vertical tab # Printer hardware HW_INIT = '\x1b\x40' # Clear data in buffer and reset modes HW_SELECT = '\x1b\x3d\x01' # Printer select HW_RESET = '\x1b\x3f\x0a\x00' # Reset printer hardware # Cash Drawer CD_KICK_2 = '\x1b\x70\x00' # Sends a pulse to pin 2 [] CD_KICK_5 = '\x1b\x70\x01' # Sends a pulse to pin 5 [] # Paper PAPER_FULL_CUT = '\x1d\x56\x00' # Full cut paper PAPER_PART_CUT = '\x1d\x56\x01' # Partial cut paper # Text format TXT_NORMAL = '\x1b\x21\x00' # Normal text TXT_2HEIGHT = '\x1b\x21\x10' # Double height text TXT_2WIDTH = '\x1b\x21\x20' # Double width text TXT_4SQUARE = '\x1b\x21\x30' # Quad area text TXT_UNDERL_OFF = '\x1b\x2d\x00' # Underline font OFF TXT_UNDERL_ON = '\x1b\x2d\x01' # Underline font 1-dot ON TXT_UNDERL2_ON = '\x1b\x2d\x02' # Underline font 2-dot ON TXT_BOLD_OFF = '\x1b\x45\x00' # Bold font OFF TXT_BOLD_ON = '\x1b\x45\x01' # Bold font ON TXT_FONT_A = '\x1b\x4d\x00' # Font type A TXT_FONT_B = '\x1b\x4d\x01' # Font type B TXT_ALIGN_LT = '\x1b\x61\x00' # Left justification TXT_ALIGN_CT = '\x1b\x61\x01' # Centering TXT_ALIGN_RT = '\x1b\x61\x02' # Right justification # Char code table CHARCODE_PC437 = '\x1b\x74\x00' # USA: Standard Europe CHARCODE_JIS = '\x1b\x74\x01' # Japanese Katakana CHARCODE_PC850 = '\x1b\x74\x02' # Multilingual CHARCODE_PC860 = '\x1b\x74\x03' # Portuguese CHARCODE_PC863 = '\x1b\x74\x04' # Canadian-French CHARCODE_PC865 = '\x1b\x74\x05' # Nordic CHARCODE_WEU = '\x1b\x74\x06' # Simplified Kanji, Hirakana CHARCODE_GREEK = '\x1b\x74\x07' # Simplified Kanji CHARCODE_HEBREW = '\x1b\x74\x08' # Simplified Kanji CHARCODE_PC1252 = '\x1b\x74\x11' # Western European Windows Code Set CHARCODE_PC866 = '\x1b\x74\x12' # Cirillic #2 CHARCODE_PC852 = '\x1b\x74\x13' # Latin 2 CHARCODE_PC858 = '\x1b\x74\x14' # Euro CHARCODE_THAI42 = '\x1b\x74\x15' # Thai character code 42 CHARCODE_THAI11 = '\x1b\x74\x16' # Thai character code 11 CHARCODE_THAI13 = '\x1b\x74\x17' # Thai character code 13 CHARCODE_THAI14 = '\x1b\x74\x18' # Thai character code 14 CHARCODE_THAI16 = '\x1b\x74\x19' # Thai character code 16 CHARCODE_THAI17 = '\x1b\x74\x1a' # Thai character code 17 CHARCODE_THAI18 = '\x1b\x74\x1b' # Thai character code 18 # Barcode format BARCODE_TXT_OFF = '\x1d\x48\x00' # HRI barcode chars OFF BARCODE_TXT_ABV = '\x1d\x48\x01' # HRI barcode chars above BARCODE_TXT_BLW = '\x1d\x48\x02' # HRI barcode chars below BARCODE_TXT_BTH = '\x1d\x48\x03' # HRI barcode chars both above and below BARCODE_FONT_A = '\x1d\x66\x00' # Font type A for HRI barcode chars BARCODE_FONT_B = '\x1d\x66\x01' # Font type B for HRI barcode chars BARCODE_HEIGHT = '\x1d\x68\x64' # Barcode Height [1-255] BARCODE_WIDTH = '\x1d\x77\x03' # Barcode Width [2-6] BARCODE_UPC_A = '\x1d\x6b\x00' # Barcode type UPC-A BARCODE_UPC_E = '\x1d\x6b\x01' # Barcode type UPC-E BARCODE_EAN13 = '\x1d\x6b\x02' # Barcode type EAN13 BARCODE_EAN8 = '\x1d\x6b\x03' # Barcode type EAN8 BARCODE_CODE39 = '\x1d\x6b\x04' # Barcode type CODE39 BARCODE_ITF = '\x1d\x6b\x05' # Barcode type ITF BARCODE_NW7 = '\x1d\x6b\x06' # Barcode type NW7 # Image format S_RASTER_N = '\x1d\x76\x30\x00' # Set raster image normal size S_RASTER_2W = '\x1d\x76\x30\x01' # Set raster image double width S_RASTER_2H = '\x1d\x76\x30\x02' # Set raster image double height S_RASTER_Q = '\x1d\x76\x30\x03' # Set raster image quadruple # Printing Density PD_N50 = '\x1d\x7c\x00' # Printing Density -50% PD_N37 = '\x1d\x7c\x01' # Printing Density -37.5% PD_N25 = '\x1d\x7c\x02' # Printing Density -25% PD_N12 = '\x1d\x7c\x03' # Printing Density -12.5% PD_0 = '\x1d\x7c\x04' # Printing Density 0% PD_P50 = '\x1d\x7c\x08' # Printing Density +50% PD_P37 = '\x1d\x7c\x07' # Printing Density +37.5% PD_P25 = '\x1d\x7c\x06' # Printing Density +25% PD_P12 = '\x1d\x7c\x05' # Printing Density +12.5%