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serial:streamer(Charstring serial_port, Integer baud_rate, Integer start_byte, Integer stop_byte, Integer data_len) -> Stream of Binary

Get a stream of binary from a serial port named serial_port.

The streamer works by looking for start_byte in the serial stream, when it finds a start_byte it will look data_len+1 bytes ahead to check if it is a stop_byte. If this is the case the data_len bytes between start_byte and `stop_byte is emitted.

Example binary stream for serial:sreamer("COM8",115200,0x55,0xAA,8):

 Start byte                               Stop byte
| |
0x55 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0xAA
| |
|---------- 8 bytes of data -------|

You can use unpack to get individual numbers from the binary object.