½øÒ»²½Á˽âkvmlib

3.1 ´ò¿ªÉ豸

# 05_±¨¸æ_É豸.py
from canlib import Device, EAN


#ͨ¹ý×îºó6λÊý×Ö£¬ÎªÎÒÃǵÄÉ豸Éú³ÉÒ»¸öEANÄ¿±ê
ean = EAN('00819-9')
print('Full EAN: {}\n'.format(ean))

# Ñ°ÕÒÎÒÃÇµÄ Ôƺ£ÓÎÏ· Memorator Pro 2xHS £¬ÏµÁкÅEAN 00819-9
dev = Device.find(ean=ean, serial=None)

# ´òÓ¡ÓйØÕâ¸öÉ豸µÄÐÅÏ¢
print(dev.probe_info())

Full EAN: 73-30130-00819-9

CANlib Channel: 0
Card Number   : 0
Device        : Ôƺ£ÓÎÏ· Memorator Pro 2xHS v2 (channel 0)
Driver Name   : kcany0a
EAN           : 73-30130-00819-9
Firmware      : 3.11.0.557
Serial Number : 11573

# 06_ÉèÖÃ_ʱÖÓ.py
from canlib import kvmlib
import datetime


# ÎÒÃÇÖªµÀÎÒÃǵÄÉ豸ÒÑÁ¬½Óµ½CANlib ͨµÀ0
channel = 0

# ÎÒÃÇ»¹ÖªµÀÎÒÃǵÄÉ豸µÄÀàÐÍÊÇkvmDEVICE_MHYDRA_EXT
with kvmlib.openDevice(
        channel_number=channel,
        device_type=kvmlib.Device.MHYDRA_EXT) as device:
    # ÎÒÃÇÒѾ­»ñµÃÁË´ËÉ豸, ±ÈÈç˵£¬ÏÖÔÚÎÒÃÇ¿ÉÒԲ鿴ϵÁкÅ

    print("Serial number:", device.serial_number)

    # ¶ÁÈ¡É豸ʱ¼ä
    print("Current device time is", device.rtc)

    # ÉèÖøÃÉ豸µÄʵʱÖÓ
    device.rtc = datetime.datetime.now()

    # ¶ÁÈ¡É豸ʱ¼ä
    print("New device time is", device.rtc)

Serial number: 11573
Current device time is 2018-08-10 07:47:46
New device time is 2018-08-10 07:52:48

3.2 ³õʼ»¯SD¿¨

# 07_ÑéÖ¤_lio_³õʼ»¯_sdcard.py
from canlib import kvmlib
from canlib import VersionNumber

# ֮ǰÎÒÃÇ¿´µ½¸ÃÉ豸ÒÑÁ¬½Óµ½CANlib ͨµÀ 0
channel = 0

# ÎÒÃÇ»¹ÖªµÀ´ËÉ豸ÀàÐÍÊÇkvmDEVICE_MHYDRA_EXT
device_type = kvmlib.kvmDEVICE_MHYDRA_EXT

# ´ò¿ªÉ豸
with kvmlib.openDevice(channel_number=channel,
                       device_type=device_type,
                       mount=False) as memorator:

    # ¸ñʽ»¯ SD ¿¨²¢¸øÅäÖÃÎļþ±£Áô 10 MB 
    # (i.e. DATABASE.BIN) ºÍ 10000 MB ¸øÎÒÃÇ×Ô¼ºµÄÎļþ¡£
    print('Initializing SD card...')
    memorator.format_disk(reserved_space=10000,
                          database_space=10)

    # ×°ÉÏ´æ´¢Çø
    memorator.mount()

    # ¶ÁÈ¡LIOÊý¾Ý¸ñʽ°æ±¾
    lio_data_format = memorator.log.ldf_version

    # ÑéÖ¤SD¿¨µÄLIOÊý¾Ý¸ñʽºÍ´ËÉ豸µÄÀàÐÍÏà·û - ÎÒÃÇÓÃÕâ¸öÀàÐÍÀ´´ò¿ªÉ豸
 
    if lio_data_format != VersionNumber(major=5, minor=0):
        if lio_data_format == VersionNumber(major=3, minor=0):
            raise ValueError('This log file can be read if you reopen the'
                             ' device as kvmDEVICE_MHYDRA.')
        raise ValueError('Unexpected Lio Data Format: ' +
                         str(lio_data_format))

    # ±¨¸æ´Ë¿¨ÉÏ·ÖÅä¸øÊý¾Ý´æ´¢ÇøµÄÐÅÏ¢ 
    print('Disk size: {disk:.0f} MB\n'
          '  Log size: {log:.0f} MB. Used: {used:.0f} MB'.
          format(disk=memorator.disk_size,
                 log=memorator.disk_usage.total,
                 used=memorator.disk_usage.used))

Initializing SD card...
Disk size: 15932 MB
  Log size: 5895 MB. Used: 0 MB

3.3 ±£´æÅäÖÃ

# 08_±£´æ_ÉèÖÃ.py
from canlib import kvamemolibxml
from canlib import kvmlib


# ÎÒÃÇ֮ǰ¿´µ½´ËÉ豸Á¬½Óµ½ÁËCANlib ͨµÀ 0
channel = 0
# ¶ÁÈ¡ XML ÉèÖÃÎļþ
with open("config.xml", 'r') as myfile:
    print('Reading xml')
    config_xml = myfile.read()

# °ÑXMLÉèÖÃת»»Îª¶þ½øÖÆÉèÖÃ
config_lif = kvamemolibxml.kvaXmlToBuffer(config_xml)

# ´ò¿ªmemorator É豸²¢Êéд¸ÃÉèÖÃ
# É豸ÀàÐÍ kvmDEVICE_MHYDRA_EXT ÊÇȱʡÉèÖÃ
with kvmlib.openDevice(channel_number=channel) as memorator:
    print('Writing config')
    memorator.write_config(config_lif)

# 09_¸´ÖÆ_Îļþ_µ½_É豸.py
import zipfile
from canlib import canlib

# Éú³ÉѹËõÎĵµ
with zipfile.ZipFile("config.zip", mode='w',
                     compression=zipfile.ZIP_DEFLATED) as zipf:
    # Ìí¼ÓÎļþµ½Ñ¹ËõÎĵµÖÐ
    zipf.write("config.xml")
    zipf.write("myCanGenerator.txe")

# ÎÒÃÇÖªµÀ´ËÉ豸ÒÑÁ¬½Óµ½CANlibͨµÀ0
channel = 0

# ´ò¿ªÉ豸²¢ÊéдѹËõÎĵµ 
with canlib.openChannel(channel=channel) as ch:
    # ÒòΪSD¿¨ÊÇÓÃFAT¸ñʽ»¯µÄ, ÎÒÃÇÓ¦¸ÃʹÓÃÒ»¸ö8.3¸ñʽµÄÎļþÃû×÷ΪĿ±êÎļþÃû
    ch.fileCopyToDevice("config.zip", "config.zip")

3.4¶ÁÈ¡½á¹û²¢±£´æµ½ÎļþÉÏ

# 10_¶ÁÈ¡_ÒѼǼµÄ_Êý¾Ý.py
import glob
import os

from canlib import EAN, VersionNumber
from canlib import kvmlib

# ÎÒÃÇ֮ǰ¿´µ½ÎÒÃǵÄÉ豸Á¬½Óµ½ CANlib ͨµÀ 0
channel = 0

# ½«´æ·Å½á¹ûÎļþµÄĿ¼
resultDir = "result"

# È·ÈϽá¹ûĿ¼´æÔÚ¶øÇÒÊÇ¿ÕÏеÄ
if os.path.isdir(resultDir):
    files = glob.glob(os.path.join(resultDir, "*"))
    for f in files:
        os.remove(f)
else:
    os.mkdir(resultDir)
os.chdir(resultDir)

# ´ò¿ªÉ豸²¢×°ÉÏ´æ´¢ÇøÅäÖà 
# É豸ÀàÐÍ kvmDEVICE_MHYDRA_EXT ÊÇȱʡÉèÖÃ
# ×¢Òâ openDevice() ¿ÉÄܻῴµ½KvmDiskNotFormated
with kvmlib.openDevice(channel_number=channel, mount=True) as memorator:
    lio_data_format = memorator.log.ldf_version
    # È·ÈÏSD¿¨µÄLIO Êý¾Ý¸ñʽ·ûºÏÉ豸ÀàÐÍ£¬ÎÒÃÇÓôËÀàÐÍÀ´´ò¿ª¸ÃÉ豸
    if lio_data_format != VersionNumber(major=5, minor=0):
        if lio_data_format == VersionNumber(major=3, minor=0):
            raise ValueError('This log file can be read if you reopen the'
                             ' device as kvmDEVICE_MHYDRA.')
        raise ValueError('Unexpected Lio Data Format: ' + str(lio_data_format))

    # ¶ÁÈ¡¼Ç¼ÏÂÀ´µÄ¼Ç¼ÎļþÊýÁ¿
    num_log_files = len(memorator.log)
    print("Found {num} file(s) on card: ".format(num=num_log_files))

    # Ñ¡ÔñËùÓмǼÎļþ²¢½«ËüÃǵÄÄÚÈÝÊéдµ½.kme50 Îļþ
    for i, log_file in enumerate(memorator.log):
        print("\n==== File {index}: {start} - {end}, approx {num} events".
              format(index=i,
                     start=log_file.start_time,
                     end=log_file.end_time,
                     num=log_file.event_count_estimation()))
        # µÚÒ»¸ö¼Ç¼Ê¼þ°üÀ¨É豸ÐÅÏ¢
        event_iterator = iter(log_file)
        first_event = next(event_iterator)
        ean = EAN.from_hilo([first_event.eanHi, first_event.eanLo])
        serial = first_event.serialNumber
        # °ÑEANºÍϵÁкÅÌí¼Óµ½ÎļþÃûÉÏ
        logfile_name = ('log_{ean}_{sn}_{index:03}.kme50'.
                        format(ean=str(ean), sn=serial, index=i))
        print('Saving to:', logfile_name)
        with kvmlib.createKme(logfile_name) as kme:
            print(first_event)
            kme.write_event(first_event)
            for event in event_iterator:
                # °ÑʼþÊéдµ½stdoutÉÏ
                print(event)
                kme.write_event(event)

    # ɾ³ýËùÓмǼÎļþ
    # memorator.log.ɾ³ýËùÓÐÎļþ()

Found 1 file on card: 

==== File 0: 2018-08-09 15:19:45 - 2018-08-09 15:19:51, approx 20 events
Saving to: log_73-30130-00819-9_11573_000.kme50
*t:             - EAN:73-30130-00819-9  s/n:11573  FW:v3.11.557  LIO:v5.0
 t:   2.824746112  DateTime: 2018-08-09 15:19:45
 t:   2.824746112 Log Trigger Event (type: 0x2, trigno: 0x01, pre-trigger: 0, post-trigger: 0)

 t:   2.824746112  ch:1 f:    2 id:   3 dlc: 8 d:12 21 13 31 22 34 41 15
 t:   2.824746137 Log Trigger Event (type: 0x2, trigno: 0x01, pre-trigger: 0, post-trigger: 0)

 t:   2.824746137  ch:0 f:   42 id:   3 dlc: 8 d:12 21 13 31 22 34 41 15
 t:   3.824770237  ch:1 f:    2 id:   4 dlc: 8 d:12 21 13 31 22 34 41 15
 t:   3.824770262  ch:0 f:   42 id:   4 dlc: 8 d:12 21 13 31 22 34 41 15
 t:   4.824788362  ch:1 f:    2 id:   5 dlc: 8 d:12 21 13 31 22 34 41 15
 t:   4.824788387  ch:0 f:   42 id:   5 dlc: 8 d:12 21 13 31 22 34 41 15
 t:   5.824810487 Log Trigger Event (type: 0x2, trigno: 0x01, pre-trigger: 0, post-trigger: 2500)

 t:   5.824810487  ch:1 f:    2 id:   6 dlc: 8 d:12 21 13 31 22 34 41 15
 t:   5.824810512  ch:0 f:   42 id:   6 dlc: 8 d:12 21 13 31 22 34 41 15
 t:   6.824826612  ch:1 f:    2 id:   7 dlc: 8 d:12 21 13 31 22 34 41 15
 t:   6.824826637  ch:0 f:   42 id:   7 dlc: 8 d:12 21 13 31 22 34 41 15
 t:   7.824851737  ch:1 f:    2 id:   8 dlc: 8 d:12 21 13 31 22 34 41 15
 t:   7.824851762  ch:0 f:   42 id:   8 dlc: 8 d:12 21 13 31 22 34 41 15

3.5 ´ÓÉ豸É϶ÁÈ¡ÅäÖá£

# 11_¶ÁÈ¡_ÅäÖÃ_´Ó_É豸.py
import os

from canlib import canlib

# ÎÒÃǵÄÉ豸ÊÇÁ¬½Óµ½ CANlib ͨµÀ 0
channel = 0

# ´ò¿ªÉ豸
with canlib.openChannel(channel=channel) as ch:
    # ÁгöÉ豸ÉϵÄÎļþ
    numFiles = ch.fileGetCount()

    if numFiles:
        for i in range(numFiles):
            name = ch.fileGetName(i)
            # Ìø¹ýÒÑÖªÎļþ
            if (os.path.splitext(name)[1].lower() == '.kmf'
                    or name.lower() == 'param.lif'
                    or name.lower() == 'database.bin'):
                print('Skipping', name)
            else:
                # ¸´ÖÆÓû§Îļþµ½µçÄÔ
                print('Copying: ', name)
                ch.fileCopyFromDevice(name, name)

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