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# Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
#
# Power button debounce test
#
# Refer to section 1.3 Power Button of
# https://sites.google.com/a/google.com/chromeos-partners/pages/
# tech-docs/firmware/ec-specification-v119
#
import time
SHORTER_THAN_T0 = 0.01
LONGER_THAN_T0 = 0.05
LONGER_THAN_T1 = 5
def consume_output(helper, reg_ex):
done = False
while not done:
try:
helper.wait_output(reg_ex, use_re=True, timeout=1)
except:
done = True
def test(helper):
helper.wait_output("--- UART initialized")
# Release power button, set to soft off, and enable keyboard
helper.ec_command("gpiomock POWER_BUTTONn 1")
helper.ec_command("powermock off")
helper.ec_command("kbd enable")
consume_output(helper, "PB released")
helper.trace("Press power button for shorter than T0 and check this\n" +
"event is ignored\n")
helper.ec_command("gpiomock POWER_BUTTONn 0")
time.sleep(SHORTER_THAN_T0)
helper.ec_command("gpiomock POWER_BUTTONn 1")
if not helper.check_no_output("PB released"):
return False
helper.trace("Press power button for longer than T0 and check this\n" +
"event is treated as a single press.")
helper.ec_command("gpiomock POWER_BUTTONn 0")
time.sleep(LONGER_THAN_T0)
helper.ec_command("gpiomock POWER_BUTTONn 1")
helper.wait_output("PB released", timeout=1)
# Expect shown only once
if not helper.check_no_output("PB released"):
return False
helper.trace("Press power button for two consecutive SHORTER_THAN_T0\n" +
"period and check this event is ignored\n")
helper.ec_command("gpiomock POWER_BUTTONn 0")
time.sleep(SHORTER_THAN_T0)
helper.ec_command("gpiomock POWER_BUTTONn 1")
time.sleep(SHORTER_THAN_T0)
helper.ec_command("gpiomock POWER_BUTTONn 0")
time.sleep(SHORTER_THAN_T0)
helper.ec_command("gpiomock POWER_BUTTONn 1")
if not helper.check_no_output("PB released"):
return False
helper.trace("Hold down power button for LONGER_THAN_T0 and check a\n" +
"single press is sent out\n")
consume_output(helper, "pwrbtn=")
helper.ec_command("gpiomock POWER_BUTTONn 0")
time.sleep(LONGER_THAN_T0)
helper.ec_command("gpiomock POWER_BUTTONn 1")
helper.wait_output("pwrbtn=LOW", timeout=1)
helper.wait_output("pwrbtn=HIGH", timeout=1)
if not helper.check_no_output("pwrbtn=LOW"):
return False
helper.trace("Press power button for SHORTER_THAN_T0, release for\n" +
"SHORTER_THAN_T0, and then press for LONGER_THAN_T0.\n" +
"Check this is treated as a single press\n")
helper.ec_command("gpiomock POWER_BUTTONn 0")
time.sleep(SHORTER_THAN_T0)
helper.ec_command("gpiomock POWER_BUTTONn 1")
time.sleep(SHORTER_THAN_T0)
helper.ec_command("gpiomock POWER_BUTTONn 0")
time.sleep(LONGER_THAN_T0)
helper.ec_command("gpiomock POWER_BUTTONn 1")
helper.wait_output("pwrbtn=LOW", timeout=1)
helper.wait_output("pwrbtn=HIGH", timeout=1)
if not helper.check_no_output("pwrbtn=LOW"):
return False
helper.trace("Hold down power button, wait for power button press\n" +
"sent out. Then relase for SHORTER_THAN_T0, check power\n" +
"button release is not sent out. Expect power button is\n" +
"treated as hold (ignoring the relase bounce)\n")
helper.ec_command("gpiomock POWER_BUTTONn 0")
helper.wait_output("pwrbtn=LOW", timeout=1)
helper.ec_command("gpiomock POWER_BUTTONn 1")
time.sleep(SHORTER_THAN_T0)
helper.ec_command("gpiomock POWER_BUTTONn 0")
if not helper.check_no_output("PB released"):
return False
helper.ec_command("gpiomock POWER_BUTTONn 1")
helper.wait_output("PB released", timeout=1)
helper.trace("When system is off, hold down power button for\n" +
"LONGER_THAN_T0. Check the initial is stretched\n")
consume_output(helper, "pwrbtn=")
helper.ec_command("gpiomock POWER_BUTTONn 0")
time.sleep(LONGER_THAN_T0)
helper.ec_command("gpiomock POWER_BUTTONn 1")
t_low = helper.wait_output("\[(?P<t>[\d\.]+) PB PCH pwrbtn=LOW\]",
use_re=True)["t"]
t_high = helper.wait_output("\[(?P<t>[\d\.]+) PB PCH pwrbtn=HIGH\]",
use_re=True)["t"]
if not helper.check_no_output("pwrbtn=LOW"):
return False
if float(t_high) - float(t_low) <= LONGER_THAN_T0 - 0.1:
return False
helper.trace("When system is off, hold down power button for\n" +
"LONGER_THAN_T0. Check no scan code is send\n")
consume_output(helper, "i8042 SEND")
helper.ec_command("gpiomock POWER_BUTTONn 0")
time.sleep(LONGER_THAN_T0)
helper.ec_command("gpiomock POWER_BUTTONn 1")
if not helper.check_no_output("i8042 SEND"):
return False
helper.trace("While powered on, hold down power button for\n" +
"LONGER_THAN_T0. A single short pulse should be sent\n")
consume_output(helper, "pwrbtn=")
helper.ec_command("powermock on")
helper.ec_command("gpiomock POWER_BUTTONn 0")
time.sleep(LONGER_THAN_T0)
helper.ec_command("gpiomock POWER_BUTTONn 1")
t_low = helper.wait_output("\[(?P<t>[\d\.]+) PB PCH pwrbtn=LOW\]",
use_re=True)["t"]
t_high = helper.wait_output("\[(?P<t>[\d\.]+) PB PCH pwrbtn=HIGH\]",
use_re=True)["t"]
if not helper.check_no_output("pwrbtn=LOW"):
return False
if float(t_high) - float(t_low) >= 0.1:
return False
helper.trace("While powered on, hold down power button for\n" +
"LONGER_THAN_T0. Scan code should be sent\n")
consume_output(helper, "i8042 SEND")
helper.ec_command("gpiomock POWER_BUTTONn 0")
helper.wait_output("i8042 SEND", timeout=1) # Expect make code
time.sleep(LONGER_THAN_T0)
helper.ec_command("gpiomock POWER_BUTTONn 1")
helper.wait_output("i8042 SEND", timeout=1) # Expect release code
helper.trace("While powered on, hold down power button for\n" +
"LONGER_THAN_T1 and check two presses are sent out\n")
consume_output(helper, "pwrbtn=")
helper.ec_command("gpiomock POWER_BUTTONn 0")
time.sleep(LONGER_THAN_T1)
helper.ec_command("gpiomock POWER_BUTTONn 1")
helper.wait_output("pwrbtn=LOW", timeout=1)
helper.wait_output("pwrbtn=HIGH", timeout=1)
helper.wait_output("pwrbtn=LOW", timeout=1)
helper.wait_output("pwrbtn=HIGH", timeout=1)
if not helper.check_no_output("pwrbtn=LOW"):
return False
return True # PASS !
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