def get_status_led(self):
"""
Gets the current system LED color
Returns:
A string that represents the supported color
"""
val = hwaccess.io_reg_read(self.io_res, self.sysled_offset)
if val != -1:
return self.REG_TO_SYSLED_COLOR.get(val)
return self.sys_ledcolor
def is_armed(self):
"""
Retrieves the armed state of the hardware watchdog.
Returns:
A boolean, True if watchdog is armed, False if not
"""
# Getting the WD Enable/Disable status
# 0 - Disabled WD
# 1 - Enabled WD
wd_status = io_reg_read(self.io_resource, self.wd_status_offset)
return bool(wd_status)
def arm(self, seconds):
"""
Arm the hardware watchdog with a timeout of <seconds> seconds.
If the watchdog is currently armed, calling this function will
simply reset the timer to the provided value. If the underlying
hardware does not support the value provided in <seconds>, this
method should arm the watchdog with the *next greater*
available value.
Returns:
An integer specifying the *actual* number of seconds the
watchdog was armed with. On failure returns -1.
"""
timer_offset = -1
for key, timer_seconds in enumerate(self.TIMERS):
if seconds > 0 and seconds <= timer_seconds:
timer_offset = key
seconds = timer_seconds
break
if timer_offset == -1:
return -1
wd_timer_val = io_reg_read(self.io_resource, self.wd_timer_offset)
if wd_timer_val != timer_offset:
self.disarm()
io_reg_write(self.io_resource, self.wd_timer_offset, timer_offset)
if self.is_armed():
# Setting the WD timer punch
io_reg_write(self.io_resource, self.wd_timer_punch_offset,
self.wd_punch_enable)
self.armed_time = self._get_time()
self.timeout = seconds
return seconds
else:
# Enable WD
io_reg_write(self.io_resource, self.wd_status_offset,
self.wd_enable)
self.armed_time = self._get_time()
self.timeout = seconds
return seconds
