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Add function to set date/time with GPS clock if available and diffence >= 5s

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This commit is contained in:
Pierrick C 2018-07-29 17:27:52 +02:00
parent 5ed1b85280
commit a758b2c3f4
1 changed files with 18 additions and 1 deletions
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19
circuitpython/main.py
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@ -139,6 +139,22 @@ def update_neopixel(data):
return (rouge, vert, bleu) return (rouge, vert, bleu)
def set_clock_from_GPS():
if gps_enable and gps.has_fix:
#Convert GPS timestamp into struct_time
gps_datetime = time.struct_time((gps.timestamp_utc.tm_year,
gps.timestamp_utc.tm_mon,
gps.timestamp_utc.tm_mday,
gps.timestamp_utc.tm_hour,
gps.timestamp_utc.tm_min,
gps.timestamp_utc.tm_sec, 0, 0, 0))
#Max difference between GPS and internal RTC (in seconds):
if abs(time.mktime(gps_datetime) - time.mktime(clock.datetime)) >= 5.0:
print("Clock difference with GPS!")
print("Previous date/time : " + datetime_format.format(*clock.datetime[0:6]))
clock.datetime = gps_datetime #Trust GPS if there is a bias
print("New date/time : " + datetime_format.format(*clock.datetime[0:6]))
######### #########
# Setup # # Setup #
######### #########
@ -148,7 +164,7 @@ gc.collect()
#Enable RTC of the feather M0 board #Enable RTC of the feather M0 board
clock = rtc.RTC() clock = rtc.RTC()
clock.datetime = time.struct_time((2018, 7, 29, 15, 31, 30, 0, 0, 0)) #clock.datetime = time.struct_time((2018, 7, 29, 15, 31, 30, 0, 0, 0))
# BME280 sensors (I2C) # BME280 sensors (I2C)
i2c = I2C(board.SCL, board.SDA) i2c = I2C(board.SCL, board.SDA)
@ -194,6 +210,7 @@ while True:
current = time.monotonic() current = time.monotonic()
if current - last_update >= update_interval: if current - last_update >= update_interval:
last_update = current last_update = current
set_clock_from_GPS()
data.update() data.update()
if print_data: if print_data:
data.show() data.show()