forked from Archive/PX4-Autopilot
576 lines
26 KiB
Python
Executable File
576 lines
26 KiB
Python
Executable File
#!/usr/bin/env python
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############################################################################
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#
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# Copyright (C) 2012-2015 PX4 Development Team. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# 3. Neither the name PX4 nor the names of its contributors may be
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# used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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############################################################################
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#
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# Serial firmware uploader for the PX4FMU bootloader
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#
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# The PX4 firmware file is a JSON-encoded Python object, containing
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# metadata fields and a zlib-compressed base64-encoded firmware image.
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#
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# The uploader uses the following fields from the firmware file:
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#
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# image
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# The firmware that will be uploaded.
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# image_size
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# The size of the firmware in bytes.
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# board_id
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# The board for which the firmware is intended.
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# board_revision
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# Currently only used for informational purposes.
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#
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# for python2.7 compatibility
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from __future__ import print_function
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import sys
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import argparse
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import binascii
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import serial
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import struct
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import json
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import zlib
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import base64
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import time
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import array
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import os
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from sys import platform as _platform
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class firmware(object):
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'''Loads a firmware file'''
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desc = {}
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image = bytes()
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crctab = array.array('I', [
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0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
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0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
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0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
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0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
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0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
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0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
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0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
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0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
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0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
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0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
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0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
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0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
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0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
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0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
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0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
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0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
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0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
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0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
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0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
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0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
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0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
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0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
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0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
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0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
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0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
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0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
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0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
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0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
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0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
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0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
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0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
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0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d])
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crcpad = bytearray(b'\xff\xff\xff\xff')
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def __init__(self, path):
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# read the file
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f = open(path, "r")
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self.desc = json.load(f)
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f.close()
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self.image = bytearray(zlib.decompress(base64.b64decode(self.desc['image'])))
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# pad image to 4-byte length
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while ((len(self.image) % 4) != 0):
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self.image.append('\xff')
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def property(self, propname):
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return self.desc[propname]
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def __crc32(self, bytes, state):
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for byte in bytes:
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index = (state ^ byte) & 0xff
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state = self.crctab[index] ^ (state >> 8)
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return state
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def crc(self, padlen):
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state = self.__crc32(self.image, int(0))
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for i in range(len(self.image), (padlen - 1), 4):
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state = self.__crc32(self.crcpad, state)
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return state
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class uploader(object):
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'''Uploads a firmware file to the PX FMU bootloader'''
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# protocol bytes
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INSYNC = b'\x12'
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EOC = b'\x20'
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# reply bytes
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OK = b'\x10'
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FAILED = b'\x11'
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INVALID = b'\x13' # rev3+
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# command bytes
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NOP = b'\x00' # guaranteed to be discarded by the bootloader
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GET_SYNC = b'\x21'
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GET_DEVICE = b'\x22'
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CHIP_ERASE = b'\x23'
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CHIP_VERIFY = b'\x24' # rev2 only
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PROG_MULTI = b'\x27'
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READ_MULTI = b'\x28' # rev2 only
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GET_CRC = b'\x29' # rev3+
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GET_OTP = b'\x2a' # rev4+ , get a word from OTP area
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GET_SN = b'\x2b' # rev4+ , get a word from SN area
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REBOOT = b'\x30'
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INFO_BL_REV = b'\x01' # bootloader protocol revision
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BL_REV_MIN = 2 # minimum supported bootloader protocol
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BL_REV_MAX = 4 # maximum supported bootloader protocol
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INFO_BOARD_ID = b'\x02' # board type
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INFO_BOARD_REV = b'\x03' # board revision
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INFO_FLASH_SIZE = b'\x04' # max firmware size in bytes
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PROG_MULTI_MAX = 60 # protocol max is 255, must be multiple of 4
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READ_MULTI_MAX = 60 # protocol max is 255, something overflows with >= 64
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NSH_INIT = bytearray(b'\x0d\x0d\x0d')
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NSH_REBOOT_BL = b"reboot -b\n"
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NSH_REBOOT = b"reboot\n"
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MAVLINK_REBOOT_ID1 = bytearray(b'\xfe\x21\x72\xff\x00\x4c\x00\x00\x80\x3f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x01\x00\x00\x48\xf0')
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MAVLINK_REBOOT_ID0 = bytearray(b'\xfe\x21\x45\xff\x00\x4c\x00\x00\x80\x3f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x00\xd7\xac')
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def __init__(self, portname, baudrate):
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# open the port, keep the default timeout short so we can poll quickly
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self.port = serial.Serial(portname, baudrate, timeout=0.5)
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self.otp = b''
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self.sn = b''
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def close(self):
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if self.port is not None:
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self.port.close()
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def __send(self, c):
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# print("send " + binascii.hexlify(c))
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self.port.write(c)
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def __recv(self, count=1):
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c = self.port.read(count)
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if len(c) < 1:
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raise RuntimeError("timeout waiting for data (%u bytes)" % count)
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# print("recv " + binascii.hexlify(c))
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return c
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def __recv_int(self):
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raw = self.__recv(4)
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val = struct.unpack("<I", raw)
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return val[0]
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def __getSync(self):
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self.port.flush()
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c = bytes(self.__recv())
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if c != self.INSYNC:
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raise RuntimeError("unexpected %s instead of INSYNC" % c)
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c = self.__recv()
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if c == self.INVALID:
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raise RuntimeError("bootloader reports INVALID OPERATION")
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if c == self.FAILED:
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raise RuntimeError("bootloader reports OPERATION FAILED")
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if c != self.OK:
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raise RuntimeError("unexpected response 0x%x instead of OK" % ord(c))
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# attempt to get back into sync with the bootloader
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def __sync(self):
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# send a stream of ignored bytes longer than the longest possible conversation
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# that we might still have in progress
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# self.__send(uploader.NOP * (uploader.PROG_MULTI_MAX + 2))
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self.port.flushInput()
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self.__send(uploader.GET_SYNC
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+ uploader.EOC)
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self.__getSync()
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def __trySync(self):
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try:
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self.port.flush()
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if (self.__recv() != self.INSYNC):
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#print("unexpected 0x%x instead of INSYNC" % ord(c))
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return False;
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if (self.__recv() != self.OK):
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#print("unexpected 0x%x instead of OK" % ord(c))
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return False
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return True
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except RuntimeError:
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#timeout, no response yet
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return False
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# send the GET_DEVICE command and wait for an info parameter
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def __getInfo(self, param):
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self.__send(uploader.GET_DEVICE + param + uploader.EOC)
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value = self.__recv_int()
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self.__getSync()
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return value
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# send the GET_OTP command and wait for an info parameter
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def __getOTP(self, param):
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t = struct.pack("I", param) # int param as 32bit ( 4 byte ) char array.
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self.__send(uploader.GET_OTP + t + uploader.EOC)
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value = self.__recv(4)
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self.__getSync()
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return value
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# send the GET_OTP command and wait for an info parameter
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def __getSN(self, param):
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t = struct.pack("I", param) # int param as 32bit ( 4 byte ) char array.
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self.__send(uploader.GET_SN + t + uploader.EOC)
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value = self.__recv(4)
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self.__getSync()
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return value
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def __drawProgressBar(self, label, progress, maxVal):
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if maxVal < progress:
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progress = maxVal
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percent = (float(progress) / float(maxVal)) * 100.0
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sys.stdout.write("\r%s: [%-20s] %.1f%%" % (label, '='*int(percent/5.0), percent))
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sys.stdout.flush()
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# send the CHIP_ERASE command and wait for the bootloader to become ready
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def __erase(self, label):
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print("\n", end='')
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self.__send(uploader.CHIP_ERASE
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+ uploader.EOC)
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# erase is very slow, give it 20s
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deadline = time.time() + 20.0
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while time.time() < deadline:
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#Draw progress bar (erase usually takes about 9 seconds to complete)
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estimatedTimeRemaining = deadline-time.time()
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if estimatedTimeRemaining >= 9.0:
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self.__drawProgressBar(label, 20.0-estimatedTimeRemaining, 9.0)
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else:
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self.__drawProgressBar(label, 10.0, 10.0)
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sys.stdout.write(" (timeout: %d seconds) " % int(deadline-time.time()) )
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sys.stdout.flush()
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if self.__trySync():
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self.__drawProgressBar(label, 10.0, 10.0)
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return;
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raise RuntimeError("timed out waiting for erase")
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# send a PROG_MULTI command to write a collection of bytes
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def __program_multi(self, data):
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if runningPython3 == True:
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length = len(data).to_bytes(1, byteorder='big')
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else:
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length = chr(len(data))
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self.__send(uploader.PROG_MULTI)
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self.__send(length)
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self.__send(data)
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self.__send(uploader.EOC)
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self.__getSync()
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# verify multiple bytes in flash
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def __verify_multi(self, data):
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if runningPython3 == True:
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length = len(data).to_bytes(1, byteorder='big')
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else:
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length = chr(len(data))
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self.__send(uploader.READ_MULTI)
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self.__send(length)
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self.__send(uploader.EOC)
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self.port.flush()
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programmed = self.__recv(len(data))
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if programmed != data:
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print("got " + binascii.hexlify(programmed))
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print("expect " + binascii.hexlify(data))
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return False
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self.__getSync()
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return True
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# send the reboot command
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def __reboot(self):
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self.__send(uploader.REBOOT
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+ uploader.EOC)
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self.port.flush()
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# v3+ can report failure if the first word flash fails
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if self.bl_rev >= 3:
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self.__getSync()
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# split a sequence into a list of size-constrained pieces
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def __split_len(self, seq, length):
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return [seq[i:i+length] for i in range(0, len(seq), length)]
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# upload code
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def __program(self, label, fw):
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print("\n", end='')
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code = fw.image
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groups = self.__split_len(code, uploader.PROG_MULTI_MAX)
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uploadProgress = 0
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for bytes in groups:
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self.__program_multi(bytes)
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#Print upload progress (throttled, so it does not delay upload progress)
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uploadProgress += 1
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if uploadProgress % 256 == 0:
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self.__drawProgressBar(label, uploadProgress, len(groups))
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self.__drawProgressBar(label, 100, 100)
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# verify code
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def __verify_v2(self, label, fw):
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print("\n", end='')
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self.__send(uploader.CHIP_VERIFY
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+ uploader.EOC)
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self.__getSync()
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code = fw.image
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groups = self.__split_len(code, uploader.READ_MULTI_MAX)
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verifyProgress = 0
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for bytes in groups:
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verifyProgress += 1
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if verifyProgress % 256 == 0:
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self.__drawProgressBar(label, verifyProgress, len(groups))
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if (not self.__verify_multi(bytes)):
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raise RuntimeError("Verification failed")
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self.__drawProgressBar(label, 100, 100)
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def __verify_v3(self, label, fw):
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print("\n", end='')
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self.__drawProgressBar(label, 1, 100)
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expect_crc = fw.crc(self.fw_maxsize)
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|
self.__send(uploader.GET_CRC
|
|
+ uploader.EOC)
|
|
report_crc = self.__recv_int()
|
|
self.__getSync()
|
|
verifyProgress = 0
|
|
if report_crc != expect_crc:
|
|
print("Expected 0x%x" % expect_crc)
|
|
print("Got 0x%x" % report_crc)
|
|
raise RuntimeError("Program CRC failed")
|
|
self.__drawProgressBar(label, 100, 100)
|
|
|
|
# get basic data about the board
|
|
def identify(self):
|
|
# make sure we are in sync before starting
|
|
self.__sync()
|
|
|
|
# get the bootloader protocol ID first
|
|
self.bl_rev = self.__getInfo(uploader.INFO_BL_REV)
|
|
if (self.bl_rev < uploader.BL_REV_MIN) or (self.bl_rev > uploader.BL_REV_MAX):
|
|
print("Unsupported bootloader protocol %d" % uploader.INFO_BL_REV)
|
|
raise RuntimeError("Bootloader protocol mismatch")
|
|
|
|
self.board_type = self.__getInfo(uploader.INFO_BOARD_ID)
|
|
self.board_rev = self.__getInfo(uploader.INFO_BOARD_REV)
|
|
self.fw_maxsize = self.__getInfo(uploader.INFO_FLASH_SIZE)
|
|
|
|
# upload the firmware
|
|
def upload(self, fw):
|
|
# Make sure we are doing the right thing
|
|
if self.board_type != fw.property('board_id'):
|
|
raise RuntimeError("Firmware not suitable for this board")
|
|
if self.fw_maxsize < fw.property('image_size'):
|
|
raise RuntimeError("Firmware image is too large for this board")
|
|
|
|
# OTP added in v4:
|
|
if self.bl_rev > 3:
|
|
for byte in range(0,32*6,4):
|
|
x = self.__getOTP(byte)
|
|
self.otp = self.otp + x
|
|
print(binascii.hexlify(x).decode('Latin-1') + ' ', end='')
|
|
# see src/modules/systemlib/otp.h in px4 code:
|
|
self.otp_id = self.otp[0:4]
|
|
self.otp_idtype = self.otp[4:5]
|
|
self.otp_vid = self.otp[8:4:-1]
|
|
self.otp_pid = self.otp[12:8:-1]
|
|
self.otp_coa = self.otp[32:160]
|
|
# show user:
|
|
try:
|
|
print("type: " + self.otp_id.decode('Latin-1'))
|
|
print("idtype: " + binascii.b2a_qp(self.otp_idtype).decode('Latin-1'))
|
|
print("vid: " + binascii.hexlify(self.otp_vid).decode('Latin-1'))
|
|
print("pid: "+ binascii.hexlify(self.otp_pid).decode('Latin-1'))
|
|
print("coa: "+ binascii.b2a_base64(self.otp_coa).decode('Latin-1'))
|
|
print("sn: ", end='')
|
|
for byte in range(0,12,4):
|
|
x = self.__getSN(byte)
|
|
x = x[::-1] # reverse the bytes
|
|
self.sn = self.sn + x
|
|
print(binascii.hexlify(x).decode('Latin-1'), end='') # show user
|
|
print('')
|
|
except Exception:
|
|
# ignore bad character encodings
|
|
pass
|
|
|
|
self.__erase("Erase ")
|
|
self.__program("Program", fw)
|
|
|
|
if self.bl_rev == 2:
|
|
self.__verify_v2("Verify ", fw)
|
|
else:
|
|
self.__verify_v3("Verify ", fw)
|
|
|
|
print("\nRebooting.\n")
|
|
self.__reboot()
|
|
self.port.close()
|
|
|
|
def send_reboot(self):
|
|
try:
|
|
# try reboot via NSH first
|
|
self.__send(uploader.NSH_INIT)
|
|
self.__send(uploader.NSH_REBOOT_BL)
|
|
self.__send(uploader.NSH_INIT)
|
|
self.__send(uploader.NSH_REBOOT)
|
|
# then try MAVLINK command
|
|
self.__send(uploader.MAVLINK_REBOOT_ID1)
|
|
self.__send(uploader.MAVLINK_REBOOT_ID0)
|
|
except:
|
|
return
|
|
|
|
|
|
# Detect python version
|
|
if sys.version_info[0] < 3:
|
|
runningPython3 = False
|
|
else:
|
|
runningPython3 = True
|
|
|
|
# Parse commandline arguments
|
|
parser = argparse.ArgumentParser(description="Firmware uploader for the PX autopilot system.")
|
|
parser.add_argument('--port', action="store", required=True, help="Serial port(s) to which the FMU may be attached")
|
|
parser.add_argument('--baud', action="store", type=int, default=115200, help="Baud rate of the serial port (default is 115200), only required for true serial ports.")
|
|
parser.add_argument('firmware', action="store", help="Firmware file to be uploaded")
|
|
args = parser.parse_args()
|
|
|
|
# warn people about ModemManager which interferes badly with Pixhawk
|
|
if os.path.exists("/usr/sbin/ModemManager"):
|
|
print("==========================================================================================================")
|
|
print("WARNING: You should uninstall ModemManager as it conflicts with any non-modem serial device (like Pixhawk)")
|
|
print("==========================================================================================================")
|
|
|
|
# Load the firmware file
|
|
fw = firmware(args.firmware)
|
|
print("Loaded firmware for %x,%x, size: %d bytes, waiting for the bootloader..." % (fw.property('board_id'), fw.property('board_revision'), fw.property('image_size')))
|
|
print("If the board does not respond within 1-2 seconds, unplug and re-plug the USB connector.")
|
|
|
|
# Spin waiting for a device to show up
|
|
while True:
|
|
portlist = []
|
|
patterns = args.port.split(",")
|
|
# on unix-like platforms use glob to support wildcard ports. This allows
|
|
# the use of /dev/serial/by-id/usb-3D_Robotics on Linux, which prevents the upload from
|
|
# causing modem hangups etc
|
|
if "linux" in _platform or "darwin" in _platform:
|
|
import glob
|
|
for pattern in patterns:
|
|
portlist += glob.glob(pattern)
|
|
else:
|
|
portlist = patterns
|
|
|
|
for port in portlist:
|
|
|
|
#print("Trying %s" % port)
|
|
|
|
# create an uploader attached to the port
|
|
try:
|
|
if "linux" in _platform:
|
|
# Linux, don't open Mac OS and Win ports
|
|
if not "COM" in port and not "tty.usb" in port:
|
|
up = uploader(port, args.baud)
|
|
elif "darwin" in _platform:
|
|
# OS X, don't open Windows and Linux ports
|
|
if not "COM" in port and not "ACM" in port:
|
|
up = uploader(port, args.baud)
|
|
elif "win" in _platform:
|
|
# Windows, don't open POSIX ports
|
|
if not "/" in port:
|
|
up = uploader(port, args.baud)
|
|
except Exception:
|
|
# open failed, rate-limit our attempts
|
|
time.sleep(0.05)
|
|
|
|
# and loop to the next port
|
|
continue
|
|
|
|
# port is open, try talking to it
|
|
try:
|
|
# identify the bootloader
|
|
up.identify()
|
|
print("Found board %x,%x bootloader rev %x on %s" % (up.board_type, up.board_rev, up.bl_rev, port))
|
|
|
|
except Exception:
|
|
# most probably a timeout talking to the port, no bootloader, try to reboot the board
|
|
print("attempting reboot on %s..." % port)
|
|
print("if the board does not respond, unplug and re-plug the USB connector.")
|
|
up.send_reboot()
|
|
|
|
# wait for the reboot, without we might run into Serial I/O Error 5
|
|
time.sleep(0.5)
|
|
|
|
# always close the port
|
|
up.close()
|
|
continue
|
|
|
|
try:
|
|
# ok, we have a bootloader, try flashing it
|
|
up.upload(fw)
|
|
|
|
except RuntimeError as ex:
|
|
|
|
# print the error
|
|
print("\nERROR: %s" % ex.args)
|
|
|
|
finally:
|
|
# always close the port
|
|
up.close()
|
|
|
|
# we could loop here if we wanted to wait for more boards...
|
|
sys.exit(0)
|