def _write(self, string):
"""Helper function to call write_data on the provided FTDI device and
verify it succeeds.
"""
# Get modem status. Useful to enable for debugging.
#ret, status = ftdi.poll_modem_status(self._ctx)
#if ret == 0:
# logger.debug('Modem status {0:02X}'.format(status))
#else:
# logger.debug('Modem status error {0}'.format(ret))
length = len(string)
try:
ret = ftdi.write_data(self._ctx, string)
#compatible with libFtdi 1.3
except TypeError:
global FT232HPrintedOnce
if (FT232HPrintedOnce == 0):
print 'WARNING: Using ftdi.write_data function compatible with libFtdi 1.2'
FT232HPrintedOnce = 1
ret = ftdi.write_data(self._ctx, string,
length) #compatible with libFtdi 1.2
# Log the string that was written in a python hex string format using a very
# ugly one-liner list comprehension for brevity.
#logger.debug('Wrote {0}'.format(''.join(['\\x{0:02X}'.format(ord(x)) for x in string])))
if ret < 0:
raise RuntimeError(
'ftdi_write_data failed with error {0}: {1}'.format(
ret, ftdi.get_error_string(self._ctx)))
if ret != length:
raise RuntimeError(
'ftdi_write_data expected to write {0} bytes but actually wrote {1}!'
.format(length, ret))
def _write(self, string):
"""Helper function to call write_data on the provided FTDI device and
verify it succeeds.
"""
# Get modem status. Useful to enable for debugging.
#ret, status = ftdi.poll_modem_status(self._ctx)
#if ret == 0:
# logger.debug('Modem status {0:02X}'.format(status))
#else:
# logger.debug('Modem status error {0}'.format(ret))
#length =
ftdi.write_data(self._ctx, string, len(string))
def _write(self, string):
length = len(string)
if self._buffer:
if self._output is None:
self._output = string
else:
self._output += string
self._debug(
5, "MPSSE: Buffering: " + "".join("{:02x}".format(ord(c))
for c in self._output))
return
self._debug(
5, "MPSSE: Write: " + "".join("{:02x}".format(ord(c))
for c in string))
ftdi.write_data(self._ctx, string, length)
def ftwrite(string):
length = len(string)
ret = ftdi.write_data(ctx, string, length)
if ret < 0:
raise RuntimeError('ftdi_write_data failed with error {0}: {1}'.format(
ret, ftdi.get_error_string(self._ctx)))
if ret != length:
raise RuntimeError(
'ftdi_write_data expected to write {0} bytes but actually wrote {1}!'
.format(length, ret))
def _write(self, string):
"""Helper function to call write_data on the provided FTDI device and
verify it succeeds.
"""
# Get modem status. Useful to enable for debugging.
#ret, status = ftdi.poll_modem_status(self._ctx)
#if ret == 0:
# logger.debug('Modem status {0:02X}'.format(status))
#else:
# logger.debug('Modem status error {0}'.format(ret))
length = len(string)
try:
ret = ftdi.write_data(self._ctx, string, length)
except TypeError:
ret = ftdi.write_data(self._ctx, string); #compatible with libFtdi 1.3
# Log the string that was written in a python hex string format using a very
# ugly one-liner list comprehension for brevity.
#logger.debug('Wrote {0}'.format(''.join(['\\x{0:02X}'.format(x) for x in bytearray(string)])))
if ret < 0:
raise RuntimeError('ftdi_write_data failed with error {0}: {1}'.format(ret, ftdi.get_error_string(self._ctx)))
if ret != length:
raise RuntimeError('ftdi_write_data expected to write {0} bytes but actually wrote {1}!'.format(length, ret))
def _ftdi_write(self, byte_list, max_iter=None):
"""Write data to the FTDI chip."""
if self._debug_ftdi:
self._debug("[FTDI] write",
"[%s]"%(" ".join("%02X" % b for b in byte_list)))
bytes_left = byte_list
iter_left = max_iter
while bytes_left:
if iter_left == 0:
break
n = ftdi.write_data(self.ftdic,
''.join(map(chr, bytes_left)), len(bytes_left))
if n < 0:
raise IOError('USB write error (error code %i: %s)'
% (n, USB_ERROR_CODE[n]
if n in USB_ERROR_CODE else 'unknown'))
bytes_left = bytes_left[n:]
if iter_left is not None:
iter_left -= 1
# number of bytes that were written
return len(byte_list)-len(bytes_left)
def _write(self, string):
"""
Helper function to call write_data on the provided FTDI device and
verify it succeeds.
"""
# Get modem status. Useful to enable for debugging.
# ret, status = ftdi.poll_modem_status(self._bus)
# if ret == 0:
# logger.debug('Modem status {0:02X}'.format(status))
# else:
# logger.debug('Modem status error {0}'.format(ret))
length = len(string)
ret = ftdi.write_data(self._bus, string, length)
# Log the string that was written in a python hex string format using
# a very ugly one-liner list comprehension for brevity.
# logger.debug('Wrote {0}'.format(''.join(['\\x{0:02X}'.format(ord(x)) for x in string])))
if ret < 0:
raise RuntimeError(
'ftdi_write_data failed with error {0}: {1}'.format(
ret, ftdi.get_error_string(self._bus)))
if ret != length:
raise RuntimeError(
'ftdi_write_data expected to write {0} bytes but actually wrote {1}!'
.format(length, ret))
def update():
# print 'current is ' + bin(current)
ftdi.write_data(c, str(chr(current)), 1)
def red(context):
actuate(context, RED_ON)
actuate(context, GREEN_OFF)
def green(context):
# turn on Green light
actuate(context, GREEN_ON)
actuate(context, RED_OFF)
def off(context):
actuate(context, RED_OFF)
actuate(context, GREEN_OFF)
context = ftd.new()
ftd.usb_open(context, 0x0403, 0x6001)
ftd.set_bitmode(context, 0xff, ftd.BITMODE_BITBANG)
# Everything off --- shouldn't be necessary.
ftd.write_data(context, bytes([0x00]))
if len(sys.argv) == 1:
off(context)
elif sys.argv[1] == 'red':
red(context)
elif sys.argv[1] == 'green':
green(context)
else:
print("Usage: lavalamps [red|green]")
def actuate(context, value):
ftd.write_data(context, value)
sleep(0.3)
ftd.write_data(context, NEUTRAL)
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)
#for i in range( 8 ):
val = 0x0
print('enabling bit #%d (0x%02x)' % (i, val))
ftdi.write_data(ftdic, chr(val))
time.sleep(5.5)
val = 0x2
print('enabling bit #%d (0x%02x)' % (i, val))
ftdi.write_data(ftdic, chr(val))
time.sleep(5.5)
#ftdi.write_data( ftdic, chr(0x00))
time.sleep(0.2)
ftdi.disable_bitbang(ftdic)
print('')
# close usb
ret = ftdi.usb_close(ftdic)
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 pins
# FIXME: read_pins fails with python3, so I disabled it for now
# tested on ubuntu 12.04 ( python3.2.3 / swig 2.0.4 )
def send_msg_led(ctx, channel, keycode, value):
msg = construct_msg_led(channel, keycode, value)
ftdi.write_data(ctx, msg)
# i += 1
# open usb
ret = ftdi.usb_open(ftdic, 0x0403, 0x6014)
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).encode('utf-8'))
time.sleep(1)
print('turning everything off\n')
ftdi.write_data(ftdic, chr(0x00).encode('utf-8'))
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).encode('utf-8'))
time.sleep(1)
ftdi.disable_bitbang(ftdic)
print('')
# read pins
ret, pins = ftdi.read_pins(ftdic)
if (ret == 0):
def send_msg_slider(ctx, channel, value):
msg = construct_msg_slider(channel, value)
ftdi.write_data(ctx, msg)
def write(self, inStr): #print "writing", hexify(inStr), "length of", len(inStr) ret = ftdi1.write_data(self.ftdic, inStr, len(inStr))
def writeConfigReg(self, device, register):
str = device + " 0b" + register.bin + " (0x" + register.hex + ")"
self.logger.debug(str)
trans = BitArray("0b00000000")
# set the refselectbit but everything else is low
trans[self.ftdi_bits["ref_sel"]] = self.refselectMode[self.refselect]
# self.logger.debug(trans.bin)
# keep LE 1 for "4" time to satisfy min pulse width
for i in xrange(4):
ftdi.write_data(self.ftdic, chr(trans.uint), 1)
# self.logger.debug(trans.bin)
# Note says assert now but it's just the same trans as befor
ftdi.write_data(self.ftdic, chr(trans.uint), 1)
# self.logger.debug(trans.bin)
for i in xrange(len(register)):
dbit = register[i]
trans[self.ftdi_bits["data"]] = dbit
trans[self.ftdi_bits["clk"]] = 0
# self.logger.debug(trans.bin)
ftdi.write_data(self.ftdic, chr(trans.uint), 1)
trans[self.ftdi_bits["clk"]] = 1
# self.logger.debug(trans.bin)
ftdi.write_data(self.ftdic, chr(trans.uint), 1)
# Now deal with the case of an attenuator
# Where the clk has to be held low for another cycle
if device is "atten1" or "atten2":
trans[self.ftdi_bits["clk"]] = 0
ftdi.write_data(self.ftdic, chr(trans.uint), 1)
# self.logger.debug(trans.bin)
# Now keep clock low for a few more cycles (copying tk code)
trans[self.ftdi_bits["clk"]] = 0
for i in xrange(3):
ftdi.write_data(self.ftdic, chr(trans.uint), 1)
# self.logger.debug(trans.bin)
# And strobe the LE bit
trans[self.ftdi_bits[device]] = 1
for i in xrange(2):
ftdi.write_data(self.ftdic, chr(trans.uint), 1)
# self.logger.debug(trans.bin)
trans[self.ftdi_bits[device]] = 0
print ftdi.write_data(self.ftdic, chr(trans.uint), 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 pins
ret, pins = ftdi.read_pins(ftdic)
#!/usr/bin/python3 import ftdi1 f = ftdi1.new() ftdi1.usb_open(f, 0x0403, 0x6001) ftdi1.set_bitmode(f, 1, 0) ftdi1.write_data(f, bytes([0])) ftdi1.write_data(f, bytes([1])) ftdi1.usb_close(f)
