Retry on error, solve #10

src/apps/plant.py

@@ -9,7 +9,7 @@ from badger2040 import (
     UPDATE_FAST,
 )
 from badger_with_clock import Badger2040
-from badger_os import get_battery_level
+from badger_os import get_battery_level, warning
 
 import secrets
 from dst import fix_dst
@@ -201,10 +201,7 @@ def main():
     while True:
         display.rtc.clear_timer_flag()
         fetch_and_display()
-        display.rtc.set_timer(
-            secrets.REFRESH_INTERVAL_MINUTES, ttp=PCF85063A.TIMER_TICK_1_OVER_60HZ
-        )
-        display.rtc.enable_timer_interrupt(True)
+        display.set_timer_minutes_with_jitter(secrets.REFRESH_INTERVAL_MINUTES)
         print("Halting")
         display.halt()
 
@@ -249,4 +246,11 @@ def get_time():
     return fix_dst(*display.rtc.datetime())
 
 
+while True:
+    try:
         main()
+    except Exception as e:
+        print(e)
+        warning(display, str(e))
+        display.set_timer_minutes_with_jitter(secrets.ERROR_REFRESH_INTERVAL_MINUTES)
+        display.halt()

src/lib/badger_with_clock.py

@@ -3,6 +3,7 @@ import machine
 from pimoroni_i2c import PimoroniI2C
 from pcf85063a import PCF85063A
 import ntptime
+import random
 
 import badger2040
 
@@ -24,3 +25,20 @@ class Badger2040(badger2040.Badger2040):
         ntptime.settime()
         now = time.localtime()
         self.rtc.datetime(now[:7])
+
+    def set_timer_minutes(self, minutes: int):
+        """Wake the board in X minutes. Doesn't halt the board."""
+        self.rtc.clear_timer_flag()
+        self.rtc.set_timer(minutes, ttp=PCF85063A.TIMER_TICK_1_OVER_60HZ)
+        self.rtc.enable_timer_interrupt(True)
+
+    def set_timer_minutes_with_jitter(
+        self, minutes: int, jitter_percentage: float = 0.2
+    ):
+        """
+        Wake the board in X minutes with some jitter. Doesn't halt the board.
+        jitter_percentage should be a float between 0.0 and 1.0.
+        """
+        delta = int(minutes * abs(jitter_percentage))
+        minutes += random.randint(-delta, delta)
+        self.set_timer_minutes(minutes)

src/secrets_template.py

@@ -14,3 +14,4 @@ HA_PLANT_CONDUCTIVITY_SENSOR = "sensor.plant_name_conductivity"
 HA_PLANT_ILLUMINANCE_SENSOR = "sensor.plant_name_illuminance"
 
 REFRESH_INTERVAL_MINUTES = 60  # Max 255
+ERROR_REFRESH_INTERVAL_MINUTES = 30