Add periodic NTP resync

master
Lauri Võsandi 5 years ago
parent c2f7272a04
commit 9eb83d2b1c
  1. 8
      README.md
  2. 17
      boot.py
  3. 25
      main.py

@ -29,11 +29,17 @@ Photos:
Boot ESP8266 with program pin held low and flash MicroPython:
```bash
wget http://micropython.org/resources/firmware/esp8266-20170612-v1.9.1.bin
esptool.py --port /dev/ttyUSB0 --baud 460800 erase_flash
esptool.py --port /dev/ttyUSB0 --baud 460800 write_flash --flash_size=detect 0 esp8266-20170612-v1.9.1.bin
```
Upload main.py and boot.py and adjust network configuration in boot.py accordingly.
Upload main.py and boot.py and adjust network configuration in boot.py accordingly:
```bash
ampy -p /dev/ttyUSB0 put boot.py
ampy -p /dev/ttyUSB0 put main.py
```
## Assembly tips

@ -1,17 +1,16 @@
# Just in case prevent boot loops
from time import sleep
print("Press Ctrl-C to stop boot script...")
sleep(1)
# Connect to wireless network as client
# Disable AP
import network
ap_if = network.WLAN(network.AP_IF)
ap_if.active(False)
print("Access point disabled")
# Connect to wireless network as client
sta_if = network.WLAN(network.STA_IF)
sta_if.active(True)
sta_if.connect("Robootikaklubi", "u4HNj3sgYK")
# Synchronize clock
import ntptime
ntptime.settime()
while not sta_if.isconnected():
pass
# Clean up
import gc

@ -1,11 +1,25 @@
import ntptime
import esp
from time import sleep, localtime
from machine import Pin, Timer
TIMEZONE = 3
RESYNC = 7200 # Resync once in two hours
print("Press Ctrl-C now abort main.py execution and to retain keyboard input")
sleep(1)
# Configure powersave
esp.sleep_type(esp.SLEEP_LIGHT)
# Note that keyboard input is lost beyond this point!
clock = Pin(3, mode=Pin.OUT)
latch = Pin(0, mode=Pin.OUT)
data = Pin(2, mode=Pin.OUT)
blink = 0
lookup = 11, 9, 12, 8, 0, 4, 1, 3, 2, 10
countdown = 0
def bitbang_bit(value):
if value & 1:
@ -17,7 +31,7 @@ def bitbang_bit(value):
def bitbang_digit(digit):
bitbang_bit(blink)
for i in range(0,width):
for i in range(0,4):
bitbang_bit(lookup[digit] << i >> 3)
bitbang_bit(blink)
bitbang_bit(blink)
@ -26,12 +40,19 @@ def bitbang_digit(digit):
timer = Timer(-1)
def schedule(delay=0):
global countdown
if countdown <= 0:
ntptime.settime()
countdown = RESYNC
print("Resync")
countdown -= 1
if delay:
timer.init(period=1000, mode=Timer.ONE_SHOT, callback=dump)
else:
dump()
def dump_time(hour, minute, second):
print("Time is %02d:%02d:%02d" % (hour, minute, second))
bitbang_digit(hour // 10)
bitbang_digit(hour % 10)
bitbang_digit(minute // 10)
@ -42,7 +63,7 @@ def dump_time(hour, minute, second):
def dump(t=None):
global blink
year, month, day, hour, minute, second, _, millis = localtime()
dump_time((hour + 3) % 24, minute, second)
dump_time((hour + TIMEZONE) % 24, minute, second)
latch.on()
latch.off()
blink = 1-blink

Loading…
Cancel
Save