C++ wrapper: Reset internal USB device pointer on Context::close()

[libftdi] / examples / python / complete.py

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

"""Python example program.

Complete program to demonstrate the usage
of the swig generated python wrapper

You need to build and install the wrapper first"""

import os
import ftdi
import time

# initialize
ftdic = ftdi.new()
if ftdic == 0:
  print 'new failed: %d', ret
  os._exit( 1 )
  
  
# list all devices
ret, devlist = ftdi.usb_find_all( ftdic, 0x0403, 0x6001 )
if ret < 0:
    print 'ftdi_usb_find_all failed: %d (%s)' % ( ret, ftdi.get_error_string( ftdic ) )
    os._exit( 1 )
print 'Number of FTDI devices found: %d\n' % ret
curnode = devlist
i = 0
while( curnode != None ):
    ret, manufacturer, description, serial = ftdi.usb_get_strings( ftdic, curnode.dev )
    if ret < 0:
        print 'ftdi_usb_get_strings failed: %d (%s)' % ( ret, ftdi.get_error_string( ftdic ) )
        os._exit( 1 )
    print 'Device #%d: manufacturer="%s" description="%s" serial="%s"\n' % ( i, manufacturer, description, serial )
    curnode = curnode.next
    i += 1

# open usb
ret = ftdi.usb_open( ftdic, 0x0403, 0x6001 )
if ret < 0:
    print 'unable to open ftdi device: %d (%s)' % ( ret, ftdi.get_error_string( ftdic ) )
    os._exit( 1 )


# bitbang
ret = ftdi.set_bitmode( ftdic, 0xff, ftdi.BITMODE_BITBANG )
if ret < 0:
    print 'Cannot enable bitbang'
    os._exit( 1 )
print 'turning everything on'
ftdi.write_data( ftdic, chr(0xff), 1 )
time.sleep( 1 )
print 'turning everything off\n'
ftdi.write_data( ftdic, chr(0x00), 1 )
time.sleep( 1 )
for i in range( 8 ):
    val = 2**i
    print 'enabling bit #%d (0x%02x)' % (i, val)
    ftdi.write_data( ftdic, chr(val), 1 )
    time.sleep ( 1 )
ftdi.disable_bitbang( ftdic )
print ''


# read chip id
ret, chipid = ftdi.read_chipid( ftdic )
print 'FDTI chip id: %X\n' % chipid


# read eeprom
eeprom_addr = 1
ret, eeprom_val = ftdi.read_eeprom_location( ftdic, eeprom_addr )
if (ret==0):
    print 'eeprom @ %d: 0x%04x\n' % ( eeprom_addr, eeprom_val )

print 'complete eeprom:'
ret = ftdi.read_eeprom( ftdic )
ret, eeprom = ftdi.get_eeprom_buf ( ftdic )
if ( ret == 0 ):
    for i in range( 128 ):
        print '%02x' % ord( eeprom[i] ),
        if ( i % 8 == 7 ):
            print ''

            
# close usb
ret = ftdi.usb_close( ftdic )
if ret < 0:
    print 'unable to close ftdi device: %d (%s)' % ( ret, ftdi.get_error_string( ftdic ) )
    os._exit( 1 )
ftdi.free( ftdic )