Method write_raw

lantz/drivers/legacy/vxi11.py:327–356

Write binary data to instrument

(self, data)

        super().finalize()

    def write_raw(self, data):
        """Write binary data to instrument
        """

        if self.term_char is not None:
            flags = OP_FLAG_TERMCHAR_SET
            term_char = str(self.term_char).encode('utf-8')[0]
            data += term_char
        
        flags = 0
        
        num = len(data)
        
        offset = 0
        
        while num > 0:
            if num <= self.RECV_CHUNK:
                flags |= OP_FLAG_END
            
            block = data[offset:offset+self.RECV_CHUNK]
            
            error, size = self.client.device_write(self.link, self.io_timeout, self.lock_timeout, flags, block)
            
            if error:
                raise Vxi11Error("error writing data: %d" % error)
            elif size < len(block):
                raise Vxi11Error("did not write complete block")
            
            offset += size
            num -= size

    def read_raw(self, num=-1):
        """Read binary data from instrument