def enumerate_device_serials(vid=FT232H_VID, pid=FT232H_PID):
"""Return a list of all FT232H device serial numbers connected to the
machine. You can use these serial numbers to open a specific FT232H device
by passing it to the FT232H initializer's serial parameter.
"""
try:
# Create a libftdi context.
ctx = None
ctx = ftdi.new()
# Enumerate FTDI devices.
device_list = None
count, device_list = ftdi.usb_find_all(ctx, vid, pid)
if count < 0:
raise RuntimeError('ftdi_usb_find_all returned error {0}: {1}'.format(count, ftdi.get_error_string(self._ctx)))
# Walk through list of devices and assemble list of serial numbers.
devices = []
while device_list is not None:
# Get USB device strings and add serial to list of devices.
ret, manufacturer, description, serial = ftdi.usb_get_strings(ctx, device_list.dev, 256, 256, 256)
if serial is not None:
devices.append(serial)
device_list = device_list.next
return devices
finally:
# Make sure to clean up list and context when done.
if device_list is not None:
ftdi.list_free(device_list)
if ctx is not None:
ftdi.free(ctx)
def enumerate_device_serials(vid=FT232H_VID, pid=FT232H_PID):
"""Return a list of all FT232H device serial numbers connected to the
machine. You can use these serial numbers to open a specific FT232H device
by passing it to the FT232H initializer's serial parameter.
"""
try:
# Create a libftdi context.
ctx = None
ctx = ftdi.new()
# Enumerate FTDI devices.
device_list = None
count, device_list = ftdi.usb_find_all(ctx, vid, pid)
if count < 0:
raise RuntimeError('ftdi_usb_find_all returned error {0}: {1}'.format(count, ftdi.get_error_string(self._ctx)))
# Walk through list of devices and assemble list of serial numbers.
devices = []
while device_list is not None:
# Get USB device strings and add serial to list of devices.
ret, manufacturer, description, serial = ftdi.usb_get_strings(ctx, device_list.dev, 256, 256, 256)
if serial is not None:
devices.append(serial)
device_list = device_list.next
return devices
finally:
# Make sure to clean up list and context when done.
if device_list is not None:
ftdi.list_free(device_list)
if ctx is not None:
ftdi.free(ctx)
def __init__(self, vid=FT232H_VID, pid=FT232H_PID, serial=None):
"""Create a FT232H object. Will search for the first available FT232H
device with the specified USB vendor ID and product ID (defaults to
FT232H default VID & PID). Can also specify an optional serial number
string to open an explicit FT232H device given its serial number. See
the FT232H.enumerate_device_serials() function to see how to list all
connected device serial numbers.
"""
# Initialize FTDI device connection.
self._ctx = ftdi.new()
if self._ctx == 0:
raise RuntimeError('ftdi_new failed! Is libftdi1 installed?')
# Register handler to close and cleanup FTDI context on program exit.
atexit.register(self.close)
if serial is None:
# Open USB connection for specified VID and PID if no serial is specified.
self._check(ftdi.usb_open, vid, pid)
else:
# Open USB connection for VID, PID, serial.
##self._check(ftdi.usb_open_string, 's:{0}:{1}:{2}'.format(vid, pid, serial))
finaldev = None
device_list = None
count, device_list = ftdi.usb_find_all(self._ctx, vid, pid)
if count < 0:
raise RuntimeError('ftdi_usb_find_all returned error {0}: {1}'.format(count, ftdi.get_error_string(self._ctx)))
# Walk through list of devices and assemble list of serial numbers.
devices = []
while device_list is not None:
# Get USB device strings and add serial to list of devices.
ret, manufacturer, description, serialtest = ftdi.usb_get_strings(self._ctx, device_list.dev, 256, 256, 256)
if serialtest == serial:
finaldev = device_list.dev
device_list = device_list.next
if finaldev is None:
raise RuntimeError('Could not find correct device')
self._check(ftdi.usb_open_dev, finaldev)
#
# Reset device.
self._check(ftdi.usb_reset)
# Disable flow control. Commented out because it is unclear if this is necessary.
#self._check(ftdi.setflowctrl, ftdi.SIO_DISABLE_FLOW_CTRL)
# Change read & write buffers to maximum size, 65535 bytes.
self._check(ftdi.read_data_set_chunksize, 65535)
self._check(ftdi.write_data_set_chunksize, 65535)
# Clear pending read data & write buffers.
self._check(ftdi.usb_purge_buffers)
# Enable MPSSE and syncronize communication with device.
self._mpsse_enable()
self._mpsse_sync()
# Initialize all GPIO as inputs.
self._write('\x80\x00\x00\x82\x00\x00')
self._direction = 0x0000
self._level = 0x0000
def __init__(self, num_pixels, num_rows):
# Create a libftdi context.
ctx = None
ctx = ftdi.new()
# Define USB vendor and product ID
vid = 0x0403
pid = 0x6014
# Enumerate FTDI devices.
self.serial = None
device_list = None
count, device_list = ftdi.usb_find_all(ctx, vid, pid)
while device_list is not None:
# Get USB device strings and add serial to list of devices.
ret, manufacturer, description, serial = ftdi.usb_get_strings(ctx, device_list.dev, 256, 256, 256)
print 'return: {0}, manufacturer: {1}, description: {2}, serial: |{3}|'.format(ret,manufacturer,description,serial)
if 'FTDI' in manufacturer and 'Serial' in description and 'FT' in serial:
self.serial = serial
device_list = device_list.next
# Make sure to clean up list and context when done.
if device_list is not None:
ftdi.list_free(device_list)
if ctx is not None:
ftdi.free(ctx)
# Create an FT232H object.
self.ft232h = FT232H.FT232H(serial=self.serial)
# Create an FT232H object.
self.ft232h = FT232H.FT232H()
# Create a SPI interface for the FT232H object. Set the SPI bus to 6mhz.
self.spi = FT232H.SPI(self.ft232h, max_speed_hz=SPI_BAUD)
# Create a pixel data buffer and lookup table.
self.buffer = bytearray(num_pixels*BYTES_PER_PIXEL*3)
self.lookup = self.build_byte_lookup()
#print self.lookup
self.set_brightness(MAX_INTENSITY/2) #set brightness to 25% by default
self.num_pixels = num_pixels
self.rows = num_rows
self.cols = num_pixels/num_rows
os._exit(1)
# try to list ftdi devices 0x6010 or 0x6001
ret, devlist = ftdi.usb_find_all(ftdic, UM232H_B_VID, UM232H_B_PID)
if ret <= 0:
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, UM232H_B_VID, UM232H_B_PID)
if ret < 0:
print('unable to open ftdi device: %d (%s)' %
(ret, ftdi.get_error_string(ftdic)))
os._exit(1)
# Allocate and inialize an ftdi context.
ftdic = ftdi.new()
if ftdic == 0:
raise ErrorMsg('ftdi.new() failed')
# List all the FT230X devices.
nDevices, devlist = ftdi.usb_find_all(ftdic, 0x0403, 0x6015)
if nDevices < 0:
raise ErrorMsg('ftdi.usb_find_all error = %s' % ftdi.get_error_string(ftdic))
elif nDevices == 0:
raise ErrorMsg('No FT230X devices found')
elif nDevices != 1:
raise ErrorMsg('More than one FT230X device found')
# Display the identified single FT230X device.
ret, manufacturer, description, serial = ftdi.usb_get_strings(ftdic, devlist.dev)
if ret < 0:
raise ErrorMsg('ftdi.usb_get_strings error = %s' % ftdi.get_error_string(ftdic))
print 'manufacturer="%s" description="%s" serial="%s"' % (manufacturer, description, serial)
# Open the identified single FT230X device.
ret = ftdi.usb_open_desc(ftdic, 0x0403, 0x6015, description, serial)
if ret < 0:
raise ErrorMsg('ftdi.usb_open_desc error = %s' % ftdi.get_error_string(ftdic))
# Read the chip id.
ret, chipid = ftdi.read_chipid(ftdic)
if ret < 0:
raise ErrorMsg('ftdi.read_chipid error = %s' % ftdi.get_error_string(ftdic))
print 'chip id=0x%08X' % (chipid % 2**32)
os._exit(1)
# try to list ftdi devices 0x6010 or 0x6001
ret, devlist = ftdi.usb_find_all(ftdic, 0x0403, 0x6010)
if ret <= 0:
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('devices: %d' % 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('#%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)
# Allocate and inialize an ftdi context.
ftdic = ftdi.new()
if ftdic == 0:
raise ErrorMsg('ftdi.new() failed')
# List all the FT230X devices.
nDevices, devlist = ftdi.usb_find_all(ftdic, 0x0403, 0x6015)
if nDevices < 0:
raise ErrorMsg('ftdi.usb_find_all error = %s' % ftdi.get_error_string(ftdic));
elif nDevices == 0:
raise ErrorMsg('No FT230X devices found');
elif nDevices != 1:
raise ErrorMsg('More than one FT230X device found');
# Display the identified single FT230X device.
ret, manufacturer, description, serial = ftdi.usb_get_strings(ftdic, devlist.dev)
if ret < 0:
raise ErrorMsg('ftdi.usb_get_strings error = %s' % ftdi.get_error_string(ftdic))
print 'manufacturer="%s" description="%s" serial="%s"' % (manufacturer, description, serial)
# Open the identified single FT230X device.
ret = ftdi.usb_open_desc(ftdic, 0x0403, 0x6015, description, serial);
if ret < 0:
raise ErrorMsg('ftdi.usb_open_desc error = %s' % ftdi.get_error_string(ftdic))
# Read the chip id.
ret, chipid = ftdi.read_chipid(ftdic)
if ret < 0:
raise ErrorMsg('ftdi.read_chipid error = %s' % ftdi.get_error_string(ftdic))
print 'chip id=0x%08X' % (chipid % 2**32)