def ux_clear_keys(no_aborts=False):
# flush any pending keypresses
from glob import numpad
try:
while 1:
ch = numpad.get_nowait()
if not no_aborts and ch == numpad.ABORT_KEY:
raise AbortInteraction()
except QueueEmpty:
return
async def wait(self):
from glob import numpad
armed = None
while 1:
# two values here:
# - (ms) time to wait before first key-repeat
# - (ms) time between 2nd and Nth repeated events
# - these values approved by @nvk
rep_delay = 200 if not self.num_repeats else 20
so_far = 0
while numpad.empty():
if self.last_key and numpad.key_pressed == self.last_key:
if so_far >= rep_delay:
self.num_repeats += 1
return self.last_key
await sleep_ms(1)
so_far += 1
ch = numpad.get_nowait()
if ch == numpad.ABORT_KEY:
raise AbortInteraction()
self.num_repeats = 0
if len(ch) > 1:
# multipress: cancel press/release cycle and be a keyup
# for other keys.
armed = None
continue
if ch == '':
self.last_key = None
if armed:
return armed
elif ch in self.need_release:
# no key-repeat on these ones
armed = ch
else:
self.last_key = ch
return ch
def ux_poll_once(expected='x'):
# non-blocking check if key is pressed
# - ignore and suppress any key not in expected
# - responds to key down only
# - eats any existing key presses
from glob import numpad
while 1:
try:
ch = numpad.key_pressed
while not ch:
ch = numpad.get_nowait()
if ch == numpad.ABORT_KEY:
raise AbortInteraction()
except QueueEmpty:
return None
for c in ch:
if c in expected:
return c
async def interact(self):
import glob
from glob import numpad
from actions import login_now
from uasyncio import sleep_ms
# Replace some drawing functions
orig_fullscreen = glob.dis.fullscreen
orig_progress_bar = glob.dis.progress_bar
orig_progress_bar_show = glob.dis.progress_bar_show
glob.dis.fullscreen = self.hack_fullscreen
glob.dis.progress_bar = self.hack_progress_bar
glob.dis.progress_bar_show = self.hack_progress_bar
# get ready ourselves
glob.dis.set_brightness(0) # dimest, but still readable
self.draw_background()
# Kill time, waiting for user input
self.digits = ''
self.test_restart = False
while not self.test_restart:
self.show()
gc.collect()
try:
# Poll for an event, no block
ch = numpad.get_nowait()
if ch == 'x':
self.digits = ''
elif ch == 'y':
if len(self.digits) == LOCAL_PIN_LENGTH:
glob.hsm_active.local_pin_entered(self.digits)
self.digits = ''
elif ch == numpad.ABORT_KEY:
# important to eat these and fully suppress them
pass
elif ch:
if len(self.digits) < LOCAL_PIN_LENGTH:
# allow only 6 digits
self.digits += ch[0]
if len(self.digits) == LOCAL_PIN_LENGTH:
# send it, even if they didn't press OK yet
glob.hsm_active.local_pin_entered(self.digits)
# do immediate screen update
continue
except QueueEmpty:
await sleep_ms(100)
except BaseException as exc:
# just in case, keep going
sys.print_exception(exc)
continue
# do the interactions, but don't let user actually press anything
req = UserAuthorizedAction.active_request
if req and not req.ux_done:
try:
await req.interact()
except AbortInteraction:
pass
# This code only reachable on the simulator and modified devices under test,
# and when the "boot_to_hsm" feature is used and successfully unlock near
# boottime.
from actions import goto_top_menu
glob.hsm_active = None
goto_top_menu()
# restore normal operation of UX
from display import Display
glob.dis.fullscreen = orig_fullscreen
glob.dis.progress_bar = orig_progress_bar
glob.dis.progress_bar_show = orig_progress_bar_show
return