md380_tool.py

#!/usr/bin/env python2
# -*- coding: utf-8 -*-

# md380-tool by KK4VCZ and Friends

# This is the client for the patched MD380 firmware.  It does all
# sorts of clever things that the official clients can't, but it
# probably has bugs and will do all sorts of unsavory things.  Do not
# expose it to light, do not feed it after midnight, and *NEVER* give
# it water.
from __future__ import print_function

import json
import struct
import sys
import time
import usb.core
from collections import namedtuple

from DFU import DFU, Request, State

# The tricky thing is that *THREE* different applications all show up
# as this same VID/PID pair.
#
# 1. The Tytera application image.
# 2. The Tytera bootloader at 0x08000000
# 3. The mask-rom bootloader from the STM32F405.
md380_vendor = 0x0483
md380_product = 0xdf11


class UsersDB(object):
    """List of registered DMR-MARC users."""
    users = {}

    def __init__(self, filename=None):
        """Loads the database."""
        import csv
        try:
            if filename is None:
                filename = sys.path[0] + '/user.bin'
            with open(filename, 'rb') as csvfile:
                reader = csv.reader(csvfile)
                for row in reader:
                    if len(row) > 0:
                        self.users[int(row[0])] = row
        except:
            # print("WARNING: Unable to load user.bin.")
            pass

    def getuser(self, id):
        """Returns a user from the ID."""
        try:
            return self.users[id]
        except:
            call = ""
            name = ""
            nickname = ""
            city = ""
            state = ""
            country = ""
            comment = ""
            return ["%i" % id, call, name, nickname, city, state, country, comment]

    def getusername(self, id):
        """Returns a formatted username from the ID."""
        user = self.getuser(id)
        return ("%s %s (%s)" % (
            user[1],
            user[2],
            user[0]))


# Quick to load, so might as well do it early.
users = UsersDB()


class Tool(DFU):
    """Client class for extra features patched into the MD380's firmware.
    None of this will work with the official firmware, of course."""

    def __init__(self, device, alt):
        super(Tool, self).__init__(device, alt)
        # We need to read the manufacturer string to hook the added USB functions
        # Some systems (Raspian Jessie) don't have this property
        getattr(device, "manufacturer")

    def drawtext(self, str, a, b):
        """Sends a new MD380 command to draw text on the screen.."""
        cmd = 0x80  # Drawtext
        a = a & 0xFF
        b = b & 0xFF
        self._device.ctrl_transfer(0x21, Request.DNLOAD, 1, 0, chr(cmd) + chr(a) + chr(b) + self.widestr(str))
        self.get_status()  # this changes state
        time.sleep(0.1)
        status = self.get_status()  # this gets the status
        if status[2] == State.dfuDNLOAD_IDLE:
            if self.verbose:
                print("Sent custom %02x %02x." % (a, b))
            self.enter_dfu_mode()
        else:
            print("Failed to send custom %02x %02x." % (a, b))
            return False
        return True

    def peek(self, adr, size):
        """Returns so many bytes from an address."""
        self.set_address(adr)
        return self.upload(1, size, 0)

    def spiflashgetid(self):
        size = 4
        """Returns SPI Flash ID."""
        cmd = 0x05  # SPIFLASHGETID
        cmdstr = (chr(cmd))
        self._device.ctrl_transfer(0x21, Request.DNLOAD, 1, 0,
                                   cmdstr)
        self.get_status()  # this changes state
        status = self.get_status()  # this gets the status
        return self.upload(1, size, 0)

    def spiflashpeek(self, adr, size=1024):
        """Returns so many bytes from SPI Flash."""
        cmd = 0x01  # SPIFLASHREAD
        cmdstr = (chr(cmd) +
                  chr(adr & 0xFF) +
                  chr((adr >> 8) & 0xFF) +
                  chr((adr >> 16) & 0xFF) +
                  chr((adr >> 24) & 0xFF)
                  )
        self._device.ctrl_transfer(0x21, Request.DNLOAD, 1, 0,
                                   cmdstr)
        self.get_status()  # this changes state
        status = self.get_status()  # this gets the status
        return self.upload(1, size, 0)

    def spiflash_erase64kblock(self, adr, size=1024):
        """Clear 64kb block on spi flash."""
        cmd = 0x03  # SPIFLASHWRITE
        cmdstr = (chr(cmd) +
                  chr(adr & 0xFF) +
                  chr((adr >> 8) & 0xFF) +
                  chr((adr >> 16) & 0xFF) +
                  chr((adr >> 24) & 0xFF)
                  )
        self._device.ctrl_transfer(0x21, Request.DNLOAD, 1, 0,
                                   cmdstr)
        self.get_status()  # this changes state
        time.sleep(0.1)

        status = self.get_status()  # this gets the status
        return self.upload(1, size, 0)

    def spiflashpoke(self, adr, size, data):
        """Returns so many bytes from SPI Flash."""
        cmd = 0x04  # SPIFLASHWRITE_NEW
        # print(size)
        cmdstr = (chr(cmd) +
                  chr(adr & 0xFF) +
                  chr((adr >> 8) & 0xFF) +
                  chr((adr >> 16) & 0xFF) +
                  chr((adr >> 24) & 0xFF) +
                  chr(size & 0xFF) +
                  chr((size >> 8) & 0xFF) +
                  chr((size >> 16) & 0xFF) +
                  chr((size >> 24) & 0xFF)
                  )

        for i in range(0, size, 1):
            cmdstr = cmdstr + data[i]

        # print(len(cmdstr))
        self._device.ctrl_transfer(0x21, Request.DNLOAD, 1, 0,
                                   cmdstr)
        self.get_status()  # this changes state
        status = self.get_status()  # this gets the status
        # print(status)
        return self.upload(1, size, 0)

    def getinbox(self, address):
        """return non-deleted messages from inbox"""
        buf = self.spiflashpeek(address, 50 * 4)
        messages = []
        for i in range(0, 50 * 4, 4):
            message = {}
            header = buf[i:i + 4]
            message["deleted"] = (header[0]) != 0x01
            if header[1] == 0x1:
                message["read"] = True
            elif header[1] == 0x2:
                message["read"] = False
            else:
                message["read"] = "N/A"
            message["order"] = (header[2])
            message["index"] = (header[3])
            if not message["deleted"]:
                messages.append(message)
        for message in messages:
            message_bytes = self.spiflashpeek(address + 50 * 4 + message["index"] * 0x124, 50 * 4 + message["index"] * 0x124 + 0x124)
            message["srcaddr"] = message_bytes[0] + (message_bytes[1] << 8) + (message_bytes[2] << 16)
            message["flags"] = message_bytes[4]
            message_text = ""
            for i in range(4, 0x124, 2):
                c = chr(message_bytes[i])
                if c != '\0':
                    message_text = message_text + c
                else:
                    break
            message["text"] = message_text
        return messages

    def getkey(self, index):
        """Returns an Enhanced Privacy key from SPI Flash.  1-indexed"""
        buf = self.spiflashpeek(0x59c0 + 16 * index - 16,
                                16)
        return buf

    def c5000peek(self, reg):
        """Returns one byte from a C5000 register."""
        cmd = 0x11  # C5000 Read Reg
        cmdstr = (chr(cmd) +
                  chr(reg & 0xFF)
                  )
        self._device.ctrl_transfer(0x21, Request.DNLOAD, 1, 0,
                                   cmdstr)
        self.get_status()  # this changes state
        status = self.get_status()  # this gets the status
        buf = self.upload(1, 1024, 0)  # Peek the 1024 byte dmesg buffer.
        return buf[0]

    def c5000poke(self, reg, val):
        """Writes a byte into a C5000 register."""
        cmd = 0x10  # C5000 Write Reg
        cmdstr = (chr(cmd) +
                  chr(reg & 0xFF) +
                  chr(val & 0xFF)
                  )
        self._device.ctrl_transfer(0x21, Request.DNLOAD, 1, 0,
                                   cmdstr)
        self.get_status()  # this changes state
        status = self.get_status()  # this gets the status

    def custom(self, cmd):
        """Returns the 1024 byte DMESG buffer."""

        self._device.ctrl_transfer(0x21, Request.DNLOAD, 1, 0, chr(cmd))
        self.get_status()  # this changes state
        # time.sleep(0.1);
        status = self.get_status()  # this gets the status

    def getdmesg(self):
        """Returns the 1024 byte DMESG buffer."""
        cmd = 0x00  # DMESG
        self._device.ctrl_transfer(0x21, Request.DNLOAD, 1, 0, chr(cmd))
        self.get_status()  # this changes state
        # time.sleep(0.1);
        status = self.get_status()  # this gets the status
        buf = self.upload(1, 1024, 0)  # Peek the 1024 byte dmesg buffer.

        # Okay, so at this point we have the buffer, but it's a ring
        # buffer that might have already looped, so we need to reorder
        # if that is the case or crop it if it isn't.
        tail = ""
        head = None
        for b in buf:
            if head is None:
                if b > 0:
                    tail += chr(b)
                else:
                    head = ""
            else:
                if b > 0:
                    head += chr(b)
                else:
                    break
        if head is None:
            return tail
        return head + tail

    def parse_calibration_data(self, data):

        freqs_bcd = data[432:]  # last 80 bytes represent 9*2 BCD frequencies,for example 00 35 10 40 == 401.03500
        freqs = []  # parse into a list of frequency settings

        def bcd2freq(bcd):
            freq_whole = "%02x" % ord(bcd[3]) + ("%02x" % ord(bcd[2]))[0]
            freq_decimal = ("%02x" % ord(bcd[2]))[1] + "%02x" % ord(bcd[1]) + "%02x" % ord(bcd[0])
            return "%s.%s" % (freq_whole, freq_decimal)

        Frequency = namedtuple("Frequency", "rx_freq tx_freq vox1 vox10 rx_low_voltage rx_full_voltage RSSI1    \
                                RSSI4 analog_mic digital_mic freq_adjust_high freq_adjust_mid freq_adjust_low1 \
                                tx_high_power tx_low_power rx_sensitivity open_sql_9 close_sql_9 open_sql_1    \
                                close_sql_1 max_volume ctcss_67hz ctcss_151_4hz ctcss_254_1hz dcs_mod2 dcs_mod1\
                                mod1_partial analog_voice_adjust lock_voltage_partial send_i_partial           \
                                send_q_partial send_i_range send_q_range rx_i_partial rx_q_partial             \
                                analog_send_i_range analog_send_q_range")
        rest = data[16:432]  # first 16 bytes are settings which seem to be equal for all frequencies
        rest_i = ""
        for k in range(0, 9):  # invert the 2d array so it's easier to map
            for j in range(0, 24):
                rest_i += rest[j * 16 + k]
        codes_per_freq = []
        for i in range(0, 9):  # 9 frequencies
            rx_freq = bcd2freq(freqs_bcd[i * 8:i * 8 + 4])
            tx_freq = bcd2freq(freqs_bcd[i * 8 + 4:i * 8 + 8])
            codes = data[:11]  # from vox1 till freq_adjust_low , the mutual ones
            codes += rest_i[i * 24:i * 24 + 24]  # the rest of info , each is a single 8 bit integer
            freqs.append(Frequency._asdict(Frequency._make((rx_freq, tx_freq) + struct.unpack("B" * 35, codes))))
        return freqs


# def calllog(dfu):
#     """Prints a call log to stdout, fetched from the MD380's memory."""
#     dfu.drawtext("Hooking calls!",160,50);
#
#     #Set the target address to the list of DMR addresses.
#     dfu.set_address(0x2001d098);
#     old1=0;
#     old2=0;
#     while 1:
#         data=dfu.upload(1,16,0);#Peek sixteen bytes.
#         llid0=(data[0]+
#                (data[1]<<8)+
#                (data[2]<<16)+
#                (data[3]<<24));
#         llid1=(data[4]+
#                (data[5]<<8)+
#                (data[6]<<16)+
#                (data[7]<<24));
#         llid2=(data[8]+
#                (data[9]<<8)+
#                (data[10]<<16)+
#                (data[11]<<24));
#         if old1!=llid1 or old2!=llid2:
#             old1=llid1;
#             old2=llid2;
#             print("DMR call from %s to %s." % (
#                 users.getusername(llid1), users.getusername(llid2)))
#             #get actual canel name
#             dfu.set_address(0x2001c9d4);
#             data=dfu.upload(1,32,0);
#             message=""
#             for i in range(0,32,2):
#                c=chr(data[i]&0x7F);
#                if c!='\0':
#                   message=message+c;
#             print(message)
#             #get actual zone name
#             dfu.set_address(0x2001b958);
#             data=dfu.upload(1,32,0);
#             message=""
#             for i in range(0,32,2):
#                c=chr(data[i]&0x7F);
#                if c!='\0':
#                  message=message+c;
#             print(message)
#             sys.stdout.flush();


def dmesg(dfu):
    """Prints the dmesg log from main memory."""
    # dfu.drawtext("Dumping dmesg",160,50);
    print(dfu.getdmesg())


def parse_calibration(dfu):
    dfu.md380_custom(0xA2, 0x05)
    data = str(bytearray(dfu.upload(0, 512)))
    freqs = dfu.parse_calibration_data(data)
    print(json.dumps(freqs, indent=4))


def coredump(dfu, filename):
    """Dumps a corefile of RAM."""
    with open(filename, 'wb') as f:
        for adr in range(0x20000000,
                         0x20000000 + (128 * 1024),
                         1024):
            # print("Fetching %08x" % adr)
            buf = dfu.peek(adr, 1024)
            f.write(buf)
        f.close()


def hexdump(dfu, address, length=512):
    """Dumps from memory to the screen"""
    adr = int(address, 16)
    buf = dfu.peek(adr, length)
    i = 0
    cbuf = ""
    for b in buf:
        sys.stdout.write("%02x " % b)
        i = i + 1
        if 32 < b < 127:
            cbuf += chr(b)
        else:
            cbuf += "."
        if i % 16 == 0:
            sys.stdout.write(" " + cbuf)
            sys.stdout.write("\n")
            cbuf = ""
        elif i % 8 == 0:
            sys.stdout.write(" ")


def hexwatch(dfu, address):
    """Dumps from memory to the screen"""
    while True:
        hexdump(dfu, address, 16)
        time.sleep(0.05)


def dump(dfu, filename, address):
    """1k Binary dumps"""
    adr = int(address, 16)
    with open(filename, 'wb') as f:
        buf = dfu.peek(adr, 1024)
        f.write(buf)
        f.close()


def flashgetid(dfu):
    size = 0
    buf = dfu.spiflashgetid()
    print("SPI Flash ID: %02x %02x %02x" % (buf[0], buf[1], buf[2]))
    if buf[0] == 0xef and buf[1] == 0x40:
        if buf[2] == 0x18:
            sys.stdout.write("W25Q128FV 16MByte\n")
            size = 16 * 1024 * 1024
        elif buf[2] == 0x14:
            sys.stdout.write("W25Q80BL 1MByte\n")
            size = 1 * 1024 * 1024
    elif buf[0] == 0x10 and buf[1] == 0xdc:
        if buf[2] == 0x01:
            sys.stdout.write("W25Q128FV 16MByte maybe\n")
            size = 16 * 1024 * 1024
    elif buf[0] == 0x70 and buf[1] == 0xf1 and buf[2] == 0x01:
        sys.stdout.write("Bad LibUSB connection.  Please see the advice from N6YN at https://github.com/travisgoodspeed/md380tools/issues/186\n")
    else:
        sys.stdout.write("Unknown SPI Flash - please report\n")
    return size


def flashdump(dfu, filename):
    """Dumps flash."""
    with open(filename, 'wb') as f:
        for adr in range(0x08000000,
                         0x08000000 + (1024 * 1024),
                         1024):
            # print("Fetching %08x" % adr)
            buf = dfu.peek(adr, 1024)
            f.write(buf)
        f.close()


def spiflashdump(dfu, filename):
    """Dumps SPI Flash."""
    with open(filename, 'wb') as f:
        for adr in range(0x00000000,
                         0x00000000 + (16 * 1024 * 1024),
                         1024):
            # print("Fetching %08x" % adr)
            buf = dfu.spiflashpeek(adr, 1024)
            f.write(buf)
        f.close()


def spiflashwrite(dfu, filename, adr):
    """Programm SPI Flash."""
    if flashgetid(dfu) == 16 * 1024 * 1024:
        with open(filename, 'rb') as f:
            data = f.read()
            size = len(data)
            dfu.md380_custom(0x91, 0x01)  # disable any radio and UI events
            # while on spi flash
            print("erase %d bytes @ 0x%x" % (size, adr))
            for n in range(adr, adr + size + 1, 0x1000):
                # print("erase %x " % n)
                dfu.spiflash_erase64kblock(n)
            fullparts = int(size / 1024)
            print("flashing %d bytes @ 0x%x" % (size, adr))
            if fullparts > 0:
                for n in range(0, fullparts, 1):
                    # print("%d %d %x %d " % (fullparts, n, adr + n * 1024, 1024))
                    dfu.spiflashpoke(adr + n * 1024, 1024, data[n * 1024:(n + 1) * 1024])
            lastpartsize = size - fullparts * 1024

            if lastpartsize > 0:
                # print("%d  %x %d " % (fullparts, adr + fullparts * 1024, lastpartsize))
                dfu.spiflashpoke(adr + fullparts * 1024, lastpartsize, data[fullparts * 1024:fullparts * 1024 + lastpartsize])
            sys.stdout.write("reboot radio now\n")
            dfu.md380_reboot()
            f.close()
    else:
        sys.stdout.write("can't programm spi flash wrong flash type\n")


def dmesgfasttail(dfu):
    """Keeps printing the dmesg buffer."""
    while True:
        sys.stdout.write(dfu.getdmesg())
        # time.sleep(0.1);
        sys.stdout.flush()


def dmesgtail(dfu):
    """Keeps printing the dmesg buffer."""
    while True:
        sys.stdout.write(dfu.getdmesg())
        time.sleep(0.1)
        sys.stdout.flush()


def c5000(dfu):
    """Prints some DMR registers."""
    for r in range(0, 0x87):
        sys.stdout.write("[0x%02x]=0x%02x\t" % (r, dfu.c5000peek(r)))
        if r % 4 == 3:
            sys.stdout.write("\n")
            sys.stdout.flush()
    sys.stdout.write("\n")


def rssi(dfu):
    """Graphs the RSSI value.  Kinda useless."""
    while True:
        rssih = dfu.c5000peek(0x43)
        rssil = dfu.c5000peek(0x44)
        rssi = (rssih << 8) | rssil
        print("%04x" % rssi)
        time.sleep(0.25)


def messages(dfu):
    """Prints all the SMS messages."""
    print("Inbox:")
    messages = dfu.getinbox(0x416d0)[::-1]
    for msg in messages:
        print("From: %s Text: %s" % (msg["srcaddr"], msg["text"]))
    print("Sent:")
    messages = dfu.getinbox(0x45100)[::-1]
    for msg in messages:
        print("To  : %s Text: %s" % (msg["srcaddr"], msg["text"]))


def keys(dfu):
    """Prints all the Enhanced Privacy keys."""
    for i in range(1, 9):
        buf = dfu.getkey(i)
        keystr = ""  # Keys are displayed as big-endian, stored as little.
        for b in buf:
            keystr = "%02x %s" % (b, keystr)
        print("%02i: %s" % (i, keystr))


def findcc(dfu):
    """Hunts for the color code of a transmitter."""
    cc = 0  # Guess at the color code.
    while True:
        # Try a new color.
        cc = cc + 1
        print("Trying color %d." % (cc & 0xf))
        sys.stdout.flush()
        dfu.c5000poke(0x1f, (cc & 0xF) << 4)
        time.sleep(1.0)
        if dfu.c5000peek(0x0d) & 0x10:
            print("Got a match on color %i" % (cc & 0xf))
            while dfu.c5000peek(0x0d) & 0x10:
                time.sleep(0.5)
                sys.stdout.write(".")
                sys.stdout.flush()
            sys.stdout.write("\n")


def bcd(b):
    return int("%02x" % b)


def calldate(dfu):
    """Print Time and Date  to stdout, fetched from the MD380's RTC."""
    dfu.set_address(0x40002800)  # 2.032
    data = dfu.upload(1, 8, 0)

    print("%02d.%02d.%02d %02d:%02d:%02d" % (
        bcd(data[4] & (0x0f | 0x30)),
        bcd(data[5] & (0x0f)),
        bcd(data[6]),
        bcd(data[2]),
        bcd(data[1] & (0x0f | 0x70)),
        bcd(data[0] & (0x0f | 0x70))))


# def calladc1(dfu):
#     """Print ADC1 Voltage (Battery), fetched from the MD380's Memory (Update with DMA)."""
#     dfu.set_address(0x2001cfcc);   #  2.032
#     data=dfu.upload(1,4,0);
#     # 7.2V ~ 2.4V PA1 (BATT) ... 2715 ~ 6.5V ... 3.3V 12BIT
#     print("%f Volt" % (3.3 / 0xfff * ((data[3] << 8) + data[2]) * 3))
#
#
# def getchannel(dfu):
#     """Print actual Channel, fetched from the MD380's Memory."""
#     dfu.set_address(0x2001d376);  # 2.032
#     data=dfu.upload(1,4,0);
#     print("%02d %02d %02d %02d" % (data[3], data[2], data[1], data[0]))


def readword(dfu, address):
    print("%x" % (int(address, 0)))
    dfu.set_address(int(address, 0))  # 2.032
    data = dfu.upload(1, 4 * 4, 0)
    print("%x %02x%02x%02x%02x" % (int(address, 0), data[3], data[2], data[1], data[0]))
    print("%x %02x %02x %02x %02x" % (int(address, 0), data[3], data[2], data[1], data[0]))
    print("%x %02x %02x %02x %02x" % (int(address, 0) + 4, data[7], data[6], data[5], data[4]))
    print("%x %02x %02x %02x %02x" % (int(address, 0) + 8, data[11], data[10], data[9], data[8]))
    print("%x %02x %02x %02x %02x" % (int(address, 0) + 12, data[15], data[14], data[13], data[12]))
    print("%d" % (data[3] << 24 | data[2] << 16 | data[1] << 8 | data[0]))


def init_dfu(alt=0):
    dev = usb.core.find(idVendor=md380_vendor,
                        idProduct=md380_product)

    if dev is None:
        raise RuntimeError('Device not found')

    dfu = Tool(dev, alt)
    dev.default_timeout = 3000

    try:
        dfu.enter_dfu_mode()
        pass
    except usb.core.USBError as e:
        if len(e.args) > 0 and e.args[0] == 'Pipe error':
            raise RuntimeError('Failed to enter DFU mode. Is bootloader running?')
        else:
            raise e

    return dfu


def usage():
    print("""
Usage: md380-tool <command> <arguments>

Looks up the name by an ID number.
    md380-tool lookup 12345

Prints the dmesg buffer.
    md380-tool dmesg
Follow the dmesg buffer.
    md380-tool dmesgtail

Prints the C5000 baseband registers.
    md380-tool c5000
Scans for DMR traffic on all color codes.
    md380-tool findcc
Dumps all the inbound and outbound text messages.
    md380-tool messages
Dumps all the keys.
    md380-tool keys

Prints the SPI Flash Type.
    md380-tool spiflashid
Dump all of flash memory.
    md380-tool flashdump <filename.bin>
Dump the complete SPI Flash image (16MByte).
    md380-tool spiflashdump <filename.bin>
Dump a core file of RAM.
    md380-tool coredump <filename.bin>
Dumps memory in hex.
    md380-tool hexdump <0xcafebabe>
Watches a hex address.
    md380-tool hexwatch <0xcafebabe>
Dump one word.
    md380-tool readword <0xcafebabe>
Dump 1kB from arbitrary address
    md380-tool dump <filename.bin> <address>
Dump calibration data 
    md380-tool calibration

Copy File to SPI flash.
    md380-tool spiflashwrite <filename> <address>"

Copy users.csv to SPI flash:
    wc -c < db/users.csv > data ; cat db/users.csv >> data
    md380-tool spiflashwrite data 0x100000


""")


def main():
    try:
        if len(sys.argv) == 2:
            if sys.argv[1] == 'dmesg':
                dfu = init_dfu()
                dmesg(dfu)
            elif sys.argv[1] == 'dmesgtail':
                dfu = init_dfu()
                dmesgtail(dfu)
            #             elif sys.argv[1] == 'calllog':
            #                 dfu=init_dfu();
            #                 calllog(dfu);
            elif sys.argv[1] == 'date':
                dfu = init_dfu()
                calldate(dfu)
            #             elif sys.argv[1] == 'adc1':
            #                 dfu=init_dfu();
            #                 calladc1(dfu);
            #             elif sys.argv[1] == 'channel':
            #                 dfu=init_dfu();
            #                 getchannel(dfu);
            elif sys.argv[1] == 'c5000':
                dfu = init_dfu()
                c5000(dfu)
            elif sys.argv[1] == 'rssi':
                dfu = init_dfu()
                rssi(dfu)
            elif sys.argv[1] == 'findcc':
                dfu = init_dfu()
                findcc(dfu)
            elif sys.argv[1] == 'messages':
                dfu = init_dfu()
                messages(dfu)
            elif sys.argv[1] == 'keys':
                dfu = init_dfu()
                keys(dfu)
            elif sys.argv[1] == 'spiflashid':
                dfu = init_dfu()
                flashgetid(dfu)
            elif sys.argv[1] == "calibration":
                dfu = init_dfu()
                parse_calibration(dfu)

        elif len(sys.argv) == 3:
            if sys.argv[1] == 'flashdump':
                print("Dumping flash from 0x08000000 to '%s'." % sys.argv[2])
                dfu = init_dfu()
                flashdump(dfu, sys.argv[2])
            elif sys.argv[1] == 'spiflashdump':
                print("Dumping SPI Flash to '%s'." % sys.argv[2])
                dfu = init_dfu()
                spiflashdump(dfu, sys.argv[2])
            elif sys.argv[1] == 'coredump':
                print("Dumping ram from 0x20000000 to '%s'." % sys.argv[2])
                dfu = init_dfu()
                coredump(dfu, sys.argv[2])
            elif sys.argv[1] == 'hexdump':
                print("Dumping memory from %s." % sys.argv[2])
                dfu = init_dfu()
                hexdump(dfu, sys.argv[2])
            elif sys.argv[1] == 'ramdump':
                print("Dumping memory from %s." % sys.argv[3])
                dfu = init_dfu()
                ramdump(dfu, sys.argv[2], sys.argv[3])
            elif sys.argv[1] == 'hexwatch':
                print("Dumping memory from %s." % sys.argv[2])
                dfu = init_dfu()
                hexwatch(dfu, sys.argv[2])
            elif sys.argv[1] == 'lookup':
                print(users.getusername(int(sys.argv[2])))
            elif sys.argv[1] == 'readword':
                dfu = init_dfu()
                readword(dfu, sys.argv[2])
            elif sys.argv[1] == 'custom':
                dfu = init_dfu()
                dfu.custom(int(sys.argv[2], 16))
                dmesg(dfu)

        elif len(sys.argv) == 4:
            if sys.argv[1] == 'spiflashwrite':
                filename = sys.argv[2]
                adr = int(sys.argv[3], 16)
                if adr >= int("0x100000", 16):
                    dfu = init_dfu()
                    spiflashwrite(dfu, sys.argv[2], adr)
                else:
                    print("address too low")
            if sys.argv[1] == 'dump':
                print("Dumping memory from %s." % sys.argv[3])
                dfu = init_dfu()
                dump(dfu, sys.argv[2], sys.argv[3])

        else:
            usage()

    except RuntimeError as e:
        print(e.args[0])
        exit(1)
    except Exception as e:
        print(e)
        # print(dfu.get_status())
        exit(1)


if __name__ == '__main__':
    main()