def reset_usb_controller(self):
if self.debug: Logging.warning("Resetting usb controller")
operating_system = open("/etc/issue").read()
if operating_system == 'Debian GNU/Linux 7 \\n \\l\n\n':
subprocess.check_output(["sudo", "service", "udev", "restart"])
elif operating_system == "Raspbian GNU/Linux 7 \\n \\l\n\n":
pass
else:
Logging.warning("OS does not support usb interface reset. Due to the instability issues with linux_gpib this could lead to problems.")
def reset_usb_controller(self):
if self.debug: Logging.warning("Resetting usb controller")
operating_system = open("/etc/issue").read()
if operating_system == 'Debian GNU/Linux 7 \\n \\l\n\n':
subprocess.check_output(["sudo", "service", "udev", "restart"])
elif operating_system == "Raspbian GNU/Linux 7 \\n \\l\n\n":
pass
else:
Logging.warning(
"OS does not support usb interface reset. Due to the instability issues with linux_gpib this could lead to problems."
)
def read(self, len=512, calls=0):
try:
result = gpib.read(self.id, len).rstrip("\n")
except gpib.GpibError, e:
Logging.warning(str(e))
if str(e) == "read() failed: A read or write of data bytes has been aborted, possibly due to a timeout or reception of a device clear command.":
Logging.info("Last write didn't succeed. Resending...")
self.reset()
self.write(self.last_write)
if calls == 2:
Logging.error("Unrecoverable error. Please reboot")
raw_input("Press ENTER when done.")
exit(1)
self.reset()
result = self.read(calls=calls + 1)
def read(self, len=512, calls=0):
try:
result = gpib.read(self.id, len).rstrip("\n")
except gpib.GpibError, e:
Logging.warning(str(e))
if str(
e
) == "read() failed: A read or write of data bytes has been aborted, possibly due to a timeout or reception of a device clear command.":
Logging.info("Last write didn't succeed. Resending...")
self.reset()
self.write(self.last_write)
if calls == 2:
Logging.error("Unrecoverable error. Please reboot")
raw_input("Press ENTER when done.")
exit(1)
self.reset()
result = self.read(calls=calls + 1)
