Adding watchdog for SAMD architecture

[aentinger]

Which is continually fed within ArduinoIoTCloud::update() to reset the board in case some function becomes stuck.

[codecov-io]

Codecov Report

Merging #235 (c6f0336) into master (70efc00) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #235   +/-   ##
=======================================
  Coverage   95.15%   95.15%           
=======================================
  Files          24       24           
  Lines         867      867           
=======================================
  Hits          825      825           
  Misses         42       42           

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[github-actions]

Memory usage change @ c6f0336

Board	flash	%	RAM for global variables	%
arduino:mbed:envie_m4	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:mbed:envie_m7	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:samd:mkr1000	🔺 +88 - +528	+0.03 - +0.2	🔺 +4 - +20	+0.01 - +0.06
arduino:samd:mkrgsm1400	🔺 +96 - +536	+0.04 - +0.2	🔺 +4 - +20	+0.01 - +0.06
arduino:samd:mkrnb1500	🔺 +72 - +512	+0.03 - +0.2	🔺 +4 - +4	+0.01 - +0.01
arduino:samd:mkrwan1300	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:samd:mkrwifi1010	🔺 0 - +528	0.0 - +0.2	🔺 0 - +4	0.0 - +0.01
arduino:samd:nano_33_iot	🔺 0 - +532	0.0 - +0.2	🔺 0 - +8	0.0 - +0.02
esp32:esp32:esp32	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
esp8266:esp8266:huzzah	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0

Click for full report table

Board	examples/ArduinoIoTCloud-Advanced flash	%	examples/ArduinoIoTCloud-Advanced RAM for global variables	%	examples/ArduinoIoTCloud-Basic flash	%	examples/ArduinoIoTCloud-Basic RAM for global variables	%	examples/utility/ArduinoIoTCloud_Travis_CI flash	%	examples/utility/ArduinoIoTCloud_Travis_CI RAM for global variables	%	examples/utility/Provisioning flash	%	examples/utility/Provisioning RAM for global variables	%	examples/utility/SelfProvisioning flash	%	examples/utility/SelfProvisioning RAM for global variables	%
arduino:mbed:envie_m4	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
arduino:mbed:envie_m7	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
arduino:samd:mkr1000	520	0.2	20	0.06	528	0.2	20	0.06	504	0.19	4	0.01	88	0.03	20	0.06
arduino:samd:mkrgsm1400	512	0.2	4	0.01	528	0.2	20	0.06	536	0.2	20	0.06	96	0.04	20	0.06
arduino:samd:mkrnb1500	512	0.2	4	0.01	504	0.19	4	0.01	504	0.19	4	0.01	72	0.03	4	0.01
arduino:samd:mkrwan1300	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
arduino:samd:mkrwifi1010	528	0.2	4	0.01	520	0.2	4	0.01	520	0.2	4	0.01	88	0.03	4	0.01	0	0.0	0	0.0
arduino:samd:nano_33_iot	532	0.2	8	0.02	524	0.2	8	0.02	524	0.2	8	0.02	92	0.04	8	0.02	0	0.0	0	0.0
esp32:esp32:esp32	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
esp8266:esp8266:huzzah	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0

Click for full report CSV

Board,examples/ArduinoIoTCloud-Advanced<br>flash,%,examples/ArduinoIoTCloud-Advanced<br>RAM for global variables,%,examples/ArduinoIoTCloud-Basic<br>flash,%,examples/ArduinoIoTCloud-Basic<br>RAM for global variables,%,examples/utility/ArduinoIoTCloud_Travis_CI<br>flash,%,examples/utility/ArduinoIoTCloud_Travis_CI<br>RAM for global variables,%,examples/utility/Provisioning<br>flash,%,examples/utility/Provisioning<br>RAM for global variables,%,examples/utility/SelfProvisioning<br>flash,%,examples/utility/SelfProvisioning<br>RAM for global variables,%
arduino:mbed:envie_m4,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0
arduino:mbed:envie_m7,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0
arduino:samd:mkr1000,520,0.2,20,0.06,528,0.2,20,0.06,504,0.19,4,0.01,88,0.03,20,0.06
arduino:samd:mkrgsm1400,512,0.2,4,0.01,528,0.2,20,0.06,536,0.2,20,0.06,96,0.04,20,0.06
arduino:samd:mkrnb1500,512,0.2,4,0.01,504,0.19,4,0.01,504,0.19,4,0.01,72,0.03,4,0.01
arduino:samd:mkrwan1300,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,
arduino:samd:mkrwifi1010,528,0.2,4,0.01,520,0.2,4,0.01,520,0.2,4,0.01,88,0.03,4,0.01,0,0.0,0,0.0
arduino:samd:nano_33_iot,532,0.2,8,0.02,524,0.2,8,0.02,524,0.2,8,0.02,92,0.04,8,0.02,0,0.0,0,0.0
esp32:esp32:esp32,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,
esp8266:esp8266:huzzah,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,