need help. newbie. pyserial and dot matrix printer.
issue- escape codes arrive at printer ( verified from hex dump) but do
not get applied.
printer make/model STAR POS printer SP500.
oddly, printer commands not initiated with the escape code .i.e. a
symbol, work fine.
import serial
ser=serial.Serial(0)
ser.bytesize=7
ser.timeout=1
ser.dsrdtr=1
ser.write('PySerial'+'\n')
ser.write('Star SP500'+'\n')
#Double Width On 14 SO = Or ESC W 1 / 0
# Off 20 DC4=
ser.write('' +'Double Width-Symbol\n') #Good
ser.write('' +'Reset\n') #Good
ser.write('\n') #Good
ser.write('Xw1\n'+'Double Width-ESC\n') #Nope ( Nor CHR(027)
'\x1b'
ser.write('Xw0\n'+'Reset\n') #X is symbol not
showing up here.
ser.write('\n')
ser.write('\n')
ser.write('\n')
ser.close()
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