Fixed inverted direction on I2S #789

Job	Run time
tests (ubuntu-latest, tests)	27s
build (ubuntu-latest, noradio)	2m 3s
tests (macos-latest, tests)	29s
build (ubuntu-latest, wifi)	2m 15s
tests (windows-latest, tests_nosan)	1m 27s
build (ubuntu-latest, bt)	2m 8s
build (macos-latest, noradio)	1m 36s
build (macos-latest, wifi)	1m 51s
build (macos-latest, bt)	2m 13s
build (windows-latest, noradio)	4m 10s
build (windows-latest, wifi)	6m 2s
build (windows-latest, bt)	5m 18s
	29m 59s

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