Init probe pin value #419

Job	Run time
tests (ubuntu-latest, tests)	29s
build (ubuntu-latest, noradio)	2m 14s
tests (macos-latest, tests)	1m 26s
build (ubuntu-latest, wifi)	2m 31s
tests (windows-latest, tests_nosan)	1m 28s
build (ubuntu-latest, bt)	2m 12s
build (macos-latest, noradio)	2m 20s
build (macos-latest, wifi)	3m 46s
build (macos-latest, bt)	2m 30s
build (windows-latest, noradio)	5m 27s
build (windows-latest, wifi)	5m 59s
build (windows-latest, bt)	5m 59s
	36m 21s

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