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- #!/usr/bin/env python
- #
- # ESP8266 ROM Bootloader Utility
- # https://github.com/themadinventor/esptool
- #
- # Copyright (C) 2014 Fredrik Ahlberg
- #
- # This program is free software; you can redistribute it and/or modify it under
- # the terms of the GNU General Public License as published by the Free Software
- # Foundation; either version 2 of the License, or (at your option) any later version.
- #
- # This program is distributed in the hope that it will be useful, but WITHOUT
- # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
- # FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
- #
- # You should have received a copy of the GNU General Public License along with
- # this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
- # Street, Fifth Floor, Boston, MA 02110-1301 USA.
- import sys
- import struct
- import serial
- import math
- import time
- import argparse
- import os
- import subprocess
- class ESPROM:
- # These are the currently known commands supported by the ROM
- ESP_FLASH_BEGIN = 0x02
- ESP_FLASH_DATA = 0x03
- ESP_FLASH_END = 0x04
- ESP_MEM_BEGIN = 0x05
- ESP_MEM_END = 0x06
- ESP_MEM_DATA = 0x07
- ESP_SYNC = 0x08
- ESP_WRITE_REG = 0x09
- ESP_READ_REG = 0x0a
- # Maximum block sized for RAM and Flash writes, respectively.
- ESP_RAM_BLOCK = 0x1800
- ESP_FLASH_BLOCK = 0x400
- # Default baudrate. The ROM auto-bauds, so we can use more or less whatever we want.
- ESP_ROM_BAUD = 115200
- # First byte of the application image
- ESP_IMAGE_MAGIC = 0xe9
- # Initial state for the checksum routine
- ESP_CHECKSUM_MAGIC = 0xef
- # OTP ROM addresses
- ESP_OTP_MAC0 = 0x3ff00050
- ESP_OTP_MAC1 = 0x3ff00054
- # Sflash stub: an assembly routine to read from spi flash and send to host
- SFLASH_STUB = "\x80\x3c\x00\x40\x1c\x4b\x00\x40\x21\x11\x00\x40\x00\x80" \
- "\xfe\x3f\xc1\xfb\xff\xd1\xf8\xff\x2d\x0d\x31\xfd\xff\x41\xf7\xff\x4a" \
- "\xdd\x51\xf9\xff\xc0\x05\x00\x21\xf9\xff\x31\xf3\xff\x41\xf5\xff\xc0" \
- "\x04\x00\x0b\xcc\x56\xec\xfd\x06\xff\xff\x00\x00"
- def __init__(self, port = 0, baud = ESP_ROM_BAUD):
- self._port = serial.Serial(port, baud)
- """ Read bytes from the serial port while performing SLIP unescaping """
- def read(self, length = 1):
- b = ''
- while len(b) < length:
- c = self._port.read(1)
- if c == '\xdb':
- c = self._port.read(1)
- if c == '\xdc':
- b = b + '\xc0'
- elif c == '\xdd':
- b = b + '\xdb'
- else:
- raise Exception('Invalid SLIP escape')
- else:
- b = b + c
- return b
- """ Write bytes to the serial port while performing SLIP escaping """
- def write(self, packet):
- buf = '\xc0'+(packet.replace('\xdb','\xdb\xdd').replace('\xc0','\xdb\xdc'))+'\xc0'
- self._port.write(buf)
- """ Calculate checksum of a blob, as it is defined by the ROM """
- @staticmethod
- def checksum(data, state = ESP_CHECKSUM_MAGIC):
- for b in data:
- state ^= ord(b)
- return state
- """ Send a request and read the response """
- def command(self, op = None, data = None, chk = 0):
- if op:
- # Construct and send request
- pkt = struct.pack('<BBHI', 0x00, op, len(data), chk) + data
- self.write(pkt)
- # Read header of response and parse
- if self._port.read(1) != '\xc0':
- raise Exception('Invalid head of packet')
- hdr = self.read(8)
- (resp, op_ret, len_ret, val) = struct.unpack('<BBHI', hdr)
- if resp != 0x01 or (op and op_ret != op):
- raise Exception('Invalid response')
- # The variable-length body
- body = self.read(len_ret)
- # Terminating byte
- if self._port.read(1) != chr(0xc0):
- raise Exception('Invalid end of packet')
- return val, body
- """ Perform a connection test """
- def sync(self):
- self.command(ESPROM.ESP_SYNC, '\x07\x07\x12\x20'+32*'\x55')
- for i in xrange(7):
- self.command()
- """ Try connecting repeatedly until successful, or giving up """
- def connect(self):
- print 'Connecting...'
- for _ in xrange(4):
- # issue reset-to-bootloader:
- # RTS = either CH_PD or nRESET (both active low = chip in reset)
- # DTR = GPIO0 (active low = boot to flasher)
- self._port.setDTR(False)
- self._port.setRTS(True)
- time.sleep(0.05)
- self._port.setDTR(True)
- self._port.setRTS(False)
- time.sleep(0.05)
- self._port.setDTR(False)
- self._port.timeout = 0.3 # worst-case latency timer should be 255ms (probably <20ms)
- for _ in xrange(4):
- try:
- self._port.flushInput()
- self._port.flushOutput()
- self.sync()
- self._port.timeout = 5
- return
- except:
- time.sleep(0.05)
- # this is a workaround for the CH340 serial driver on current versions of Linux,
- # which seems to sometimes set the serial port up with wrong parameters
- self._port.close()
- self._port.open()
- raise Exception('Failed to connect')
- """ Read memory address in target """
- def read_reg(self, addr):
- res = self.command(ESPROM.ESP_READ_REG, struct.pack('<I', addr))
- if res[1] != "\0\0":
- raise Exception('Failed to read target memory')
- return res[0]
- """ Write to memory address in target """
- def write_reg(self, addr, value, mask, delay_us = 0):
- if self.command(ESPROM.ESP_WRITE_REG,
- struct.pack('<IIII', addr, value, mask, delay_us))[1] != "\0\0":
- raise Exception('Failed to write target memory')
- """ Start downloading an application image to RAM """
- def mem_begin(self, size, blocks, blocksize, offset):
- if self.command(ESPROM.ESP_MEM_BEGIN,
- struct.pack('<IIII', size, blocks, blocksize, offset))[1] != "\0\0":
- raise Exception('Failed to enter RAM download mode')
- """ Send a block of an image to RAM """
- def mem_block(self, data, seq):
- if self.command(ESPROM.ESP_MEM_DATA,
- struct.pack('<IIII', len(data), seq, 0, 0)+data, ESPROM.checksum(data))[1] != "\0\0":
- raise Exception('Failed to write to target RAM')
- """ Leave download mode and run the application """
- def mem_finish(self, entrypoint = 0):
- if self.command(ESPROM.ESP_MEM_END,
- struct.pack('<II', int(entrypoint == 0), entrypoint))[1] != "\0\0":
- raise Exception('Failed to leave RAM download mode')
- """ Start downloading to Flash (performs an erase) """
- def flash_begin(self, size, offset):
- old_tmo = self._port.timeout
- num_blocks = (size + ESPROM.ESP_FLASH_BLOCK - 1) / ESPROM.ESP_FLASH_BLOCK
- self._port.timeout = 10
- if self.command(ESPROM.ESP_FLASH_BEGIN,
- struct.pack('<IIII', size, num_blocks, ESPROM.ESP_FLASH_BLOCK, offset))[1] != "\0\0":
- raise Exception('Failed to enter Flash download mode')
- self._port.timeout = old_tmo
- """ Write block to flash """
- def flash_block(self, data, seq):
- if self.command(ESPROM.ESP_FLASH_DATA,
- struct.pack('<IIII', len(data), seq, 0, 0)+data, ESPROM.checksum(data))[1] != "\0\0":
- raise Exception('Failed to write to target Flash')
- """ Leave flash mode and run/reboot """
- def flash_finish(self, reboot = False):
- pkt = struct.pack('<I', int(not reboot))
- if self.command(ESPROM.ESP_FLASH_END, pkt)[1] != "\0\0":
- raise Exception('Failed to leave Flash mode')
- """ Run application code in flash """
- def run(self, reboot = False):
- # Fake flash begin immediately followed by flash end
- self.flash_begin(0, 0)
- self.flash_finish(reboot)
- """ Read MAC from OTP ROM """
- def read_mac(self):
- mac0 = esp.read_reg(esp.ESP_OTP_MAC0)
- mac1 = esp.read_reg(esp.ESP_OTP_MAC1)
- if ((mac1 >> 16) & 0xff) == 0:
- oui = (0x18, 0xfe, 0x34)
- elif ((mac1 >> 16) & 0xff) == 1:
- oui = (0xac, 0xd0, 0x74)
- else:
- raise Exception("Unknown OUI")
- return oui + ((mac1 >> 8) & 0xff, mac1 & 0xff, (mac0 >> 24) & 0xff)
- """ Read SPI flash manufacturer and device id """
- def flash_id(self):
- self.flash_begin(0, 0)
- self.write_reg(0x60000240, 0x0, 0xffffffff)
- self.write_reg(0x60000200, 0x10000000, 0xffffffff)
- flash_id = esp.read_reg(0x60000240)
- self.flash_finish(False)
- return flash_id
- """ Read SPI flash """
- def flash_read(self, offset, size, count = 1):
- # Create a custom stub
- stub = struct.pack('<III', offset, size, count) + self.SFLASH_STUB
- # Trick ROM to initialize SFlash
- self.flash_begin(0, 0)
- # Download stub
- self.mem_begin(len(stub), 1, len(stub), 0x40100000)
- self.mem_block(stub, 0)
- self.mem_finish(0x4010001c)
- # Fetch the data
- data = ''
- for _ in xrange(count):
- if self._port.read(1) != '\xc0':
- raise Exception('Invalid head of packet (sflash read)')
- data += self.read(size)
- if self._port.read(1) != chr(0xc0):
- raise Exception('Invalid end of packet (sflash read)')
- return data
- """ Abuse the loader protocol to force flash to be left in write mode """
- def flash_unlock_dio(self):
- # Enable flash write mode
- self.flash_begin(0, 0)
- # Reset the chip rather than call flash_finish(), which would have
- # write protected the chip again (why oh why does it do that?!)
- self.mem_begin(0,0,0,0x40100000)
- self.mem_finish(0x40000080)
- """ Perform a chip erase of SPI flash """
- def flash_erase(self):
- # Trick ROM to initialize SFlash
- self.flash_begin(0, 0)
- # This is hacky: we don't have a custom stub, instead we trick
- # the bootloader to jump to the SPIEraseChip() routine and then halt/crash
- # when it tries to boot an unconfigured system.
- self.mem_begin(0,0,0,0x40100000)
- self.mem_finish(0x40004984)
- # Yup - there's no good way to detect if we succeeded.
- # It it on the other hand unlikely to fail.
- class ESPFirmwareImage:
-
- def __init__(self, filename = None):
- self.segments = []
- self.entrypoint = 0
- self.flash_mode = 0
- self.flash_size_freq = 0
- if filename is not None:
- f = file(filename, 'rb')
- (magic, segments, self.flash_mode, self.flash_size_freq, self.entrypoint) = struct.unpack('<BBBBI', f.read(8))
-
- # some sanity check
- if magic != ESPROM.ESP_IMAGE_MAGIC or segments > 16:
- raise Exception('Invalid firmware image')
-
- for i in xrange(segments):
- (offset, size) = struct.unpack('<II', f.read(8))
- if offset > 0x40200000 or offset < 0x3ffe0000 or size > 65536:
- raise Exception('Suspicious segment %x,%d' % (offset, size))
- self.segments.append((offset, size, f.read(size)))
- # Skip the padding. The checksum is stored in the last byte so that the
- # file is a multiple of 16 bytes.
- align = 15-(f.tell() % 16)
- f.seek(align, 1)
- self.checksum = ord(f.read(1))
- def add_segment(self, addr, data):
- # Data should be aligned on word boundary
- l = len(data)
- if l % 4:
- data += b"\x00" * (4 - l % 4)
- self.segments.append((addr, len(data), data))
- def save(self, filename):
- f = file(filename, 'wb')
- f.write(struct.pack('<BBBBI', ESPROM.ESP_IMAGE_MAGIC, len(self.segments),
- self.flash_mode, self.flash_size_freq, self.entrypoint))
- checksum = ESPROM.ESP_CHECKSUM_MAGIC
- for (offset, size, data) in self.segments:
- f.write(struct.pack('<II', offset, size))
- f.write(data)
- checksum = ESPROM.checksum(data, checksum)
- align = 15-(f.tell() % 16)
- f.seek(align, 1)
- f.write(struct.pack('B', checksum))
- class ELFFile:
- def __init__(self, name):
- self.name = name
- self.symbols = None
- def _fetch_symbols(self):
- if self.symbols is not None:
- return
- self.symbols = {}
- try:
- tool_nm = "xtensa-lx106-elf-nm"
- if os.getenv('XTENSA_CORE')=='lx106':
- tool_nm = "xt-nm"
- proc = subprocess.Popen([tool_nm, self.name], stdout=subprocess.PIPE)
- except OSError:
- print "Error calling "+tool_nm+", do you have Xtensa toolchain in PATH?"
- sys.exit(1)
- for l in proc.stdout:
- fields = l.strip().split()
- self.symbols[fields[2]] = int(fields[0], 16)
- def get_symbol_addr(self, sym):
- self._fetch_symbols()
- return self.symbols[sym]
- def get_entry_point(self):
- tool_readelf = "xtensa-lx106-elf-readelf"
- if os.getenv('XTENSA_CORE')=='lx106':
- tool_objcopy = "xt-readelf"
- try:
- proc = subprocess.Popen([tool_readelf, "-h", self.name], stdout=subprocess.PIPE)
- except OSError:
- print "Error calling "+tool_nm+", do you have Xtensa toolchain in PATH?"
- sys.exit(1)
- for l in proc.stdout:
- fields = l.strip().split()
- if fields[0] == "Entry":
- return int(fields[3], 0);
- def load_section(self, section):
- tool_objcopy = "xtensa-lx106-elf-objcopy"
- if os.getenv('XTENSA_CORE')=='lx106':
- tool_objcopy = "xt-objcopy"
- subprocess.check_call([tool_objcopy, "--only-section", section, "-Obinary", self.name, ".tmp.section"])
- f = open(".tmp.section", "rb")
- data = f.read()
- f.close()
- os.remove(".tmp.section")
- return data
- def arg_auto_int(x):
- return int(x, 0)
- if __name__ == '__main__':
- parser = argparse.ArgumentParser(description = 'ESP8266 ROM Bootloader Utility', prog = 'esptool')
- parser.add_argument(
- '--port', '-p',
- help = 'Serial port device',
- default = '/dev/ttyUSB0')
- parser.add_argument(
- '--baud', '-b',
- help = 'Serial port baud rate',
- type = arg_auto_int,
- default = ESPROM.ESP_ROM_BAUD)
- subparsers = parser.add_subparsers(
- dest = 'operation',
- help = 'Run esptool {command} -h for additional help')
- parser_load_ram = subparsers.add_parser(
- 'load_ram',
- help = 'Download an image to RAM and execute')
- parser_load_ram.add_argument('filename', help = 'Firmware image')
- parser_dump_mem = subparsers.add_parser(
- 'dump_mem',
- help = 'Dump arbitrary memory to disk')
- parser_dump_mem.add_argument('address', help = 'Base address', type = arg_auto_int)
- parser_dump_mem.add_argument('size', help = 'Size of region to dump', type = arg_auto_int)
- parser_dump_mem.add_argument('filename', help = 'Name of binary dump')
- parser_read_mem = subparsers.add_parser(
- 'read_mem',
- help = 'Read arbitrary memory location')
- parser_read_mem.add_argument('address', help = 'Address to read', type = arg_auto_int)
- parser_write_mem = subparsers.add_parser(
- 'write_mem',
- help = 'Read-modify-write to arbitrary memory location')
- parser_write_mem.add_argument('address', help = 'Address to write', type = arg_auto_int)
- parser_write_mem.add_argument('value', help = 'Value', type = arg_auto_int)
- parser_write_mem.add_argument('mask', help = 'Mask of bits to write', type = arg_auto_int)
- parser_write_flash = subparsers.add_parser(
- 'write_flash',
- help = 'Write a binary blob to flash')
- parser_write_flash.add_argument('addr_filename', nargs = '+', help = 'Address and binary file to write there, separated by space')
- parser_write_flash.add_argument('--flash_freq', '-ff', help = 'SPI Flash frequency',
- choices = ['40m', '26m', '20m', '80m'], default = '40m')
- parser_write_flash.add_argument('--flash_mode', '-fm', help = 'SPI Flash mode',
- choices = ['qio', 'qout', 'dio', 'dout'], default = 'qio')
- parser_write_flash.add_argument('--flash_size', '-fs', help = 'SPI Flash size in Mbit',
- choices = ['4m', '2m', '8m', '16m', '32m'], default = '4m')
- parser_run = subparsers.add_parser(
- 'run',
- help = 'Run application code in flash')
- parser_image_info = subparsers.add_parser(
- 'image_info',
- help = 'Dump headers from an application image')
- parser_image_info.add_argument('filename', help = 'Image file to parse')
- parser_make_image = subparsers.add_parser(
- 'make_image',
- help = 'Create an application image from binary files')
- parser_make_image.add_argument('output', help = 'Output image file')
- parser_make_image.add_argument('--segfile', '-f', action = 'append', help = 'Segment input file')
- parser_make_image.add_argument('--segaddr', '-a', action = 'append', help = 'Segment base address', type = arg_auto_int)
- parser_make_image.add_argument('--entrypoint', '-e', help = 'Address of entry point', type = arg_auto_int, default = 0)
- parser_elf2image = subparsers.add_parser(
- 'elf2image',
- help = 'Create an application image from ELF file')
- parser_elf2image.add_argument('input', help = 'Input ELF file')
- parser_elf2image.add_argument('--output', '-o', help = 'Output filename prefix', type = str)
- parser_elf2image.add_argument('--flash_freq', '-ff', help = 'SPI Flash frequency',
- choices = ['40m', '26m', '20m', '80m'], default = '40m')
- parser_elf2image.add_argument('--flash_mode', '-fm', help = 'SPI Flash mode',
- choices = ['qio', 'qout', 'dio', 'dout'], default = 'qio')
- parser_elf2image.add_argument('--flash_size', '-fs', help = 'SPI Flash size in Mbit',
- choices = ['4m', '2m', '8m', '16m', '32m'], default = '4m')
- parser_read_mac = subparsers.add_parser(
- 'read_mac',
- help = 'Read MAC address from OTP ROM')
- parser_flash_id = subparsers.add_parser(
- 'flash_id',
- help = 'Read SPI flash manufacturer and device ID')
- parser_read_flash = subparsers.add_parser(
- 'read_flash',
- help = 'Read SPI flash content')
- parser_read_flash.add_argument('address', help = 'Start address', type = arg_auto_int)
- parser_read_flash.add_argument('size', help = 'Size of region to dump', type = arg_auto_int)
- parser_read_flash.add_argument('filename', help = 'Name of binary dump')
- parser_erase_flash = subparsers.add_parser(
- 'erase_flash',
- help = 'Perform Chip Erase on SPI flash')
- args = parser.parse_args()
- # Create the ESPROM connection object, if needed
- esp = None
- if args.operation not in ('image_info','make_image','elf2image'):
- esp = ESPROM(args.port, args.baud)
- esp.connect()
- # Do the actual work. Should probably be split into separate functions.
- if args.operation == 'load_ram':
- image = ESPFirmwareImage(args.filename)
- print 'RAM boot...'
- for (offset, size, data) in image.segments:
- print 'Downloading %d bytes at %08x...' % (size, offset),
- sys.stdout.flush()
- esp.mem_begin(size, math.ceil(size / float(esp.ESP_RAM_BLOCK)), esp.ESP_RAM_BLOCK, offset)
- seq = 0
- while len(data) > 0:
- esp.mem_block(data[0:esp.ESP_RAM_BLOCK], seq)
- data = data[esp.ESP_RAM_BLOCK:]
- seq += 1
- print 'done!'
- print 'All segments done, executing at %08x' % image.entrypoint
- esp.mem_finish(image.entrypoint)
- elif args.operation == 'read_mem':
- print '0x%08x = 0x%08x' % (args.address, esp.read_reg(args.address))
- elif args.operation == 'write_mem':
- esp.write_reg(args.address, args.value, args.mask, 0)
- print 'Wrote %08x, mask %08x to %08x' % (args.value, args.mask, args.address)
- elif args.operation == 'dump_mem':
- f = file(args.filename, 'wb')
- for i in xrange(args.size/4):
- d = esp.read_reg(args.address+(i*4))
- f.write(struct.pack('<I', d))
- if f.tell() % 1024 == 0:
- print '\r%d bytes read... (%d %%)' % (f.tell(), f.tell()*100/args.size),
- sys.stdout.flush()
- print 'Done!'
- elif args.operation == 'write_flash':
- assert len(args.addr_filename) % 2 == 0
- flash_mode = {'qio':0, 'qout':1, 'dio':2, 'dout': 3}[args.flash_mode]
- flash_size_freq = {'4m':0x00, '2m':0x10, '8m':0x20, '16m':0x30, '32m':0x40}[args.flash_size]
- flash_size_freq += {'40m':0, '26m':1, '20m':2, '80m': 0xf}[args.flash_freq]
- flash_info = struct.pack('BB', flash_mode, flash_size_freq)
- while args.addr_filename:
- address = int(args.addr_filename[0], 0)
- filename = args.addr_filename[1]
- args.addr_filename = args.addr_filename[2:]
- image = file(filename, 'rb').read()
- print 'Erasing flash...'
- blocks = math.ceil(len(image)/float(esp.ESP_FLASH_BLOCK))
- esp.flash_begin(blocks*esp.ESP_FLASH_BLOCK, address)
- seq = 0
- while len(image) > 0:
- print '\rWriting at 0x%08x... (%d %%)' % (address + seq*esp.ESP_FLASH_BLOCK, 100*(seq+1)/blocks),
- sys.stdout.flush()
- block = image[0:esp.ESP_FLASH_BLOCK]
- # Fix sflash config data
- if address == 0 and seq == 0 and block[0] == '\xe9':
- block = block[0:2] + flash_info + block[4:]
- # Pad the last block
- block = block + '\xff' * (esp.ESP_FLASH_BLOCK-len(block))
- esp.flash_block(block, seq)
- image = image[esp.ESP_FLASH_BLOCK:]
- seq += 1
- print
- print '\nLeaving...'
- if args.flash_mode == 'dio':
- esp.flash_unlock_dio()
- else:
- esp.flash_finish(False)
- elif args.operation == 'run':
- esp.run()
- elif args.operation == 'image_info':
- image = ESPFirmwareImage(args.filename)
- print ('Entry point: %08x' % image.entrypoint) if image.entrypoint != 0 else 'Entry point not set'
- print '%d segments' % len(image.segments)
- print
- checksum = ESPROM.ESP_CHECKSUM_MAGIC
- for (idx, (offset, size, data)) in enumerate(image.segments):
- print 'Segment %d: %5d bytes at %08x' % (idx+1, size, offset)
- checksum = ESPROM.checksum(data, checksum)
- print
- print 'Checksum: %02x (%s)' % (image.checksum, 'valid' if image.checksum == checksum else 'invalid!')
- elif args.operation == 'make_image':
- image = ESPFirmwareImage()
- if len(args.segfile) == 0:
- raise Exception('No segments specified')
- if len(args.segfile) != len(args.segaddr):
- raise Exception('Number of specified files does not match number of specified addresses')
- for (seg, addr) in zip(args.segfile, args.segaddr):
- data = file(seg, 'rb').read()
- image.add_segment(addr, data)
- image.entrypoint = args.entrypoint
- image.save(args.output)
- elif args.operation == 'elf2image':
- if args.output is None:
- args.output = args.input + '-'
- e = ELFFile(args.input)
- image = ESPFirmwareImage()
- image.entrypoint = e.get_entry_point()
- for section, start in ((".text", "_text_start"), (".data", "_data_start"), (".rodata", "_rodata_start")):
- data = e.load_section(section)
- image.add_segment(e.get_symbol_addr(start), data)
- image.flash_mode = {'qio':0, 'qout':1, 'dio':2, 'dout': 3}[args.flash_mode]
- image.flash_size_freq = {'4m':0x00, '2m':0x10, '8m':0x20, '16m':0x30, '32m':0x40}[args.flash_size]
- image.flash_size_freq += {'40m':0, '26m':1, '20m':2, '80m': 0xf}[args.flash_freq]
- image.save(args.output + "0x00000.bin")
- data = e.load_section(".irom0.text")
- off = e.get_symbol_addr("_irom0_text_start") - 0x40200000
- assert off >= 0
- f = open(args.output + "0x%05x.bin" % off, "wb")
- f.write(data)
- f.close()
- elif args.operation == 'read_mac':
- mac = esp.read_mac()
- print 'MAC: %s' % ':'.join(map(lambda x: '%02x'%x, mac))
- elif args.operation == 'flash_id':
- flash_id = esp.flash_id()
- print 'Manufacturer: %02x' % (flash_id & 0xff)
- print 'Device: %02x%02x' % ((flash_id >> 8) & 0xff, (flash_id >> 16) & 0xff)
- elif args.operation == 'read_flash':
- print 'Please wait...'
- file(args.filename, 'wb').write(esp.flash_read(args.address, 1024, int(math.ceil(args.size / 1024.)))[:args.size])
- elif args.operation == 'erase_flash':
- esp.flash_erase()
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