import sys
import select
import tty
import termios
import struct
from xstools.xscomm import XsComm
USB_ID = 0 # This is the USB index for the XuLA board connected to the host PC.
comm = XsComm(xsusb_id=USB_ID, module_id=255)
addr_tracker = 0xFFFFFFFF
# Adapted from
# http://stackoverflow.com/questions/24582491/python-non-blocking-non-messing-my-tty-key-press-detection
class NonBlockingConsole(object):
def __enter__(self):
try:
self.old_settings = termios.tcgetattr(sys.stdin)
tty.setcbreak(sys.stdin.fileno())
finally:
return self
def __exit__(self, type, value, traceback):
try: termios.tcsetattr(sys.stdin, termios.TCSADRAIN, self.old_settings)
finally:
pass
def get_data(self):
if select.select([sys.stdin], [], [], 0) == ([sys.stdin], [], []):
return sys.stdin.read(1)
return False
