Question

serial.write() method in pyserial seems to only send string data. I have arrays like [0xc0,0x04,0x00] and want to be able to send/receive them via the serial port? Are there any separate methods for raw I/O?

I think I might need to change the arrays to [‘\xc0′,’\x04′,’\x00’], still, null character might pose a problem.

Answer 1

You need to convert your data to a string

'\xc0\x04\x00' 

Null characters are not a problem in Python — strings are not null-terminated the zero byte behaves just like another byte '\x00'.

One way to do this:

>>> import array >>> array.array('B', [0xc0, 0x04, 0x00]).tostring() '\xc0\x04\x00'