swamp-boot -c /dev/ttyUSB0 -e -w cdc.hex -t -d

Swamp-boot, version 0.9
Connect "/dev/ttyUSB0"...V3.1...PID0445... done
Erasing... done
Writing from "cdc.hex"... done
hello
connected
baudrate: 9600, data 8, parity 0, stop 0
Tracing... done
Disconnecting... done

Synopsis:
	swamp-boot [OPTIONS] 

Options:
--rts ARG
	Select RTS mode: reset - for device RESET,
	nreset - for inverted device RESET, boot
	- for device BOOT0 (default), nboot - for
	inverted device BOOT0, set - stay at high
	level, clear - stay at low level

--dtr ARG
	Select DTR mode: reset - for device RESET
	(default), nreset - for inverted device RESET,
	boot - for device BOOT0, nboot - for inverted
	device BOOT0, set - stay at high level, clear
	- stay at low level

-c, --connect ARG
	Open serial port and connect to device bootloader

-u, --unprotect
	Erase and read-out unprotect device memory

-r, --read ARG
	Read data from device memory to file

-e, --erase
	Erase device memory

-w, --write ARG
	Write data from file to device memory

-p, --protect
	Read-out protect device memory

--trace-time ARG
	Set trace intercharacter interval in seconds
	(5 default)

--trace-size ARG
	Set maximum trace log size (4096 default)

-t, --trace
	Restart device in user mode, with redirecting
	device output to stdout

-d, --disconnect
	Disconnect device and close serial port

-h, --help
	Print this help

Return values:
9	Invalid checksum of file
8	Invalid device memory location or invalid record in file
7	Unsupported device
6	Invalid reply from device bootloader
5	No reply from device bootloader
4	Serial port already open
3	Internal error
2	Invalid actual parameter
1	Invalid option
0	No errors, all done