Using microcontroller.reset() or exit_and_deep_sleep() intermittently triggers a "Crash into the HardFault_Handler" and reload into safe mode on the MagTag using CircuitPython 6.1.0.
I encountered this issue while making a simplified derivative of the MagTag cat fed clock project, in which I used exit_and_deep_sleep() to sleep the MagTag in-between minute refreshes. With exit_and_deep_sleep(), the MagTag would hard crash after around 9 hours of continuous operation. After a manual reset, the device would operate as normal on the same battery charge for another ~9 hours before crashing. In trying to to debug the issue I replaced exit_and_deep_sleep() with a simple time.sleep() then microcontroller.reset(). Unfortunately, this version would hard crash in ~3 minutes.
I am using a ChronoDot for time keeping, but as far as I can tell the same crash occurs when I use Adafruit IO over wifi. Full code is:
from adafruit_magtag.magtag import MagTag
from busio import I2C
import adafruit_ds3231
from board import SCL, SDA
CLOCK_I2C = I2C(SCL, SDA)
rtc = adafruit_ds3231.DS3231(CLOCK_I2C)
magtag = MagTag()
magtag.display.rotation = 90
magtag.peripherals.neopixel_disable = True
magtag.peripherals.speaker_disable = True
magtag.graphics.set_background(0x000000)
mid_x = (magtag.graphics.display.width // 2) - 1
magtag.add_text(
text_font="Lato-Regular-74.bdf",
text_position=(mid_x, 10),
text_anchor_point=(0.5, 0),
is_data=False)
magtag.add_text(
text_font="/BebasNeueRegular-41.bdf",
text_position=(mid_x, 86),
text_anchor_point=(0.5, 0),
is_data=False)
clock = rtc.datetime
weekdays = ("mon", "tue", "wed", "thur", "fri", "sat", "sun")
months = ("Octember", "January", "February", "March", "April", "May", "June",
"July", "August", "September", "October", "November", "December")
hour = clock.tm_hour
minute = clock.tm_min
weekday = weekdays[clock.tm_wday]
month = months[clock.tm_mon]
day = clock.tm_mday
year = clock.tm_year
if hour > 12:
hour = hour - 12
if minute < 10:
minute = "0" + str(minute)
magtag.set_text(f"{hour}:{minute}", auto_refresh=False)
magtag.set_text_color(16777215, index=0)
magtag.set_text(f"{weekday}. {month} {day}", index=1, auto_refresh=False)
magtag.set_text_color(16777215, index=1)
magtag.refresh()
clock = rtc.datetime
wait = 62 - clock.tm_sec
magtag.exit_and_deep_sleep(wait)If it matters any, I am using macOS Big Sur and sending the main.py file with the cp -X command.
Thank you so much for CircuitPython and all the work that goes into it!
Using
microcontroller.reset()orexit_and_deep_sleep()intermittently triggers a "Crash into the HardFault_Handler" and reload into safe mode on the MagTag using CircuitPython 6.1.0.I encountered this issue while making a simplified derivative of the MagTag cat fed clock project, in which I used
exit_and_deep_sleep()to sleep the MagTag in-between minute refreshes. Withexit_and_deep_sleep(), the MagTag would hard crash after around 9 hours of continuous operation. After a manual reset, the device would operate as normal on the same battery charge for another ~9 hours before crashing. In trying to to debug the issue I replacedexit_and_deep_sleep()with a simpletime.sleep()thenmicrocontroller.reset(). Unfortunately, this version would hard crash in ~3 minutes.I am using a ChronoDot for time keeping, but as far as I can tell the same crash occurs when I use Adafruit IO over wifi. Full code is:
If it matters any, I am using macOS Big Sur and sending the main.py file with the cp -X command.
Thank you so much for CircuitPython and all the work that goes into it!