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servicenow-chat-alert/yoctoLib.python.26380/Examples/Prog-YFiles-Example/YFilesExample.py
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YFilesExample.py
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#!/usr/bin/python
# -*- coding: utf-8 -*-
import os, sys
import math
# add ../../Sources to the PYTHONPATH
sys.path.append(os.path.join("..", "..", "Sources"))
from array import *
from yocto_api import *
from yocto_files import *
def usage():
scriptname = os.path.basename(sys.argv[0])
print("Usage:")
print(scriptname + ' <serial_number>')
print(scriptname + ' <logical_name>')
print(scriptname + ' any ')
sys.exit()
def die(msg):
sys.exit(msg + ' (check USB cable)')
errmsg = YRefParam()
if len(sys.argv) < 2:
usage()
target = sys.argv[1]
# Setup the API to use local USB devices
if YAPI.RegisterHub("usb", errmsg) != YAPI.SUCCESS:
sys.exit("init error" + errmsg.value)
if target == 'any':
# retrieve any filesystem
files = YFiles.FirstFiles()
if files is None:
die('No module connected')
else:
files = YFiles.FindFiles(target + ".files")
if not files.isOnline():
die("Module not connected ")
# create text files and upload them to the device
for i in range(1, 5):
contents = "This is file " + str(i)
# convert the string to binary data
binaryData = contents.encode("latin-1")
# upload the file to the device
files.upload("file" + str(i) + ".txt", binaryData)
# list files found on the device
print("Files on device:")
filelist = files.get_list("*")
for i in range(len(filelist)):
file = filelist[i]
print('%-40s%08x %d bytes' % (file.get_name(), file.get_crc() % 0xffffffff, file.get_size()))
# download a file
binaryData = files.download("file1.txt")
# and display
print("")
print("contents of file1.txt:")
print(binaryData.decode("latin-1"))
YAPI.FreeAPI()
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