def __init__(self, config):
'''
'''
self.config = config
self.hours_pin = int(config.get('clockdriver', 'hour_pin'))
self.mins_pin = int(config.get('clockdriver', 'min_pin'))
self.seconds_pin = int(config.get('clockdriver', 'sec_pin'))
#
self.gpio = pigpio.pi()
#
self.ds3231 = SDL_DS3231(0, int(config.get('clockdriver', 'ds3231addr'),0) )
#
self.msfdecoder = MSFDecoder( self.gpio,
int(config.get('clockdriver', 'msf_pin')),
self.tick_callback,
self.timesync_callback,
)
self.dial_update_scheduled = False
self.running = True
return
class ClockDriver(object):
'''
'''
def __init__(self, config):
'''
'''
self.config = config
self.hours_pin = int(config.get('clockdriver', 'hour_pin'))
self.mins_pin = int(config.get('clockdriver', 'min_pin'))
self.seconds_pin = int(config.get('clockdriver', 'sec_pin'))
#
self.gpio = pigpio.pi()
#
self.ds3231 = SDL_DS3231(0, int(config.get('clockdriver', 'ds3231addr'),0) )
#
self.msfdecoder = MSFDecoder( self.gpio,
int(config.get('clockdriver', 'msf_pin')),
self.tick_callback,
self.timesync_callback,
)
self.dial_update_scheduled = False
self.running = True
return
def run(self):
'''
'''
logger.info("Starting Clock Driver")
self.initdials()
self.msfdecoder.run()
while self.running:
time.sleep(0.1)
return
def stop(self):
'''
'''
logger.info("Stop Clock Driver")
self.gpio.set_PWM_dutycycle(self.hours_pin, 0 )
self.gpio.set_PWM_dutycycle(self.mins_pin, 0 )
self.gpio.set_PWM_dutycycle(self.seconds_pin, 0 )
self.msfdecoder.stop()
self.gpio.stop()
return
def timesync_callback(self, dt, bst_change_soon, is_bst, dut):
'''
'''
logger.debug("Syncing Clock Driver")
rtc_dt = self.ds3231.read_datetime()
difference = rtc_dt - dt
if difference > timedelta(seconds=0):
logger.warning("Difference in clocks - rtc: %s msf: %s - correcting" % (rtc_dt,dt))
self.ds3231.write_datetime(dt)
return
def tick_callback(self):
'''
'''
logger.debug("Tick Callback")
self.update_dials( self.ds3231.read_datetime() )
return
def update_dials(self, dt):
'''
'''
logger.debug("Updating Clock Dials")
t = dt.timetuple()
# twelve hour clock
self.gpio.set_PWM_dutycycle(self.hours_pin, int( ( t.tm_hour % 12 ) / 12.0 * 255 ) )
self.gpio.set_PWM_dutycycle(self.mins_pin, int( t.tm_min / 60.0 * 255 ) )
self.gpio.set_PWM_dutycycle(self.seconds_pin, int( t.tm_sec / 60.0 * 255 ) )
return
def initdials(self):
'''
'''
logger.debug("Initialising the dial driver")
self.gpio.set_mode(self.hours_pin, pigpio.OUTPUT)
self.gpio.set_mode(self.mins_pin, pigpio.OUTPUT)
self.gpio.set_mode(self.seconds_pin, pigpio.OUTPUT)
self.gpio.set_PWM_dutycycle(self.hours_pin, 0)
self.gpio.set_PWM_dutycycle(self.mins_pin, 0)
self.gpio.set_PWM_dutycycle(self.seconds_pin, 0)
return
