162306a36Sopenharmony_ciWhat:		/sys/bus/iio/devices/triggerX/trigger_polarity
262306a36Sopenharmony_ciKernelVersion:	4.11
362306a36Sopenharmony_ciContact:	fabrice.gasnier@st.com
462306a36Sopenharmony_ciDescription:
562306a36Sopenharmony_ci		The STM32 ADC can be configured to use external trigger sources
662306a36Sopenharmony_ci		(e.g. timers, pwm or exti gpio). Then, it can be tuned to start
762306a36Sopenharmony_ci		conversions on external trigger by either:
862306a36Sopenharmony_ci
962306a36Sopenharmony_ci		- "rising-edge"
1062306a36Sopenharmony_ci		- "falling-edge"
1162306a36Sopenharmony_ci		- "both-edges".
1262306a36Sopenharmony_ci
1362306a36Sopenharmony_ci		Reading returns current trigger polarity.
1462306a36Sopenharmony_ci
1562306a36Sopenharmony_ci		Writing value before enabling conversions sets trigger polarity.
1662306a36Sopenharmony_ci
1762306a36Sopenharmony_ciWhat:		/sys/bus/iio/devices/triggerX/trigger_polarity_available
1862306a36Sopenharmony_ciKernelVersion:	4.11
1962306a36Sopenharmony_ciContact:	fabrice.gasnier@st.com
2062306a36Sopenharmony_ciDescription:
2162306a36Sopenharmony_ci		List all available trigger_polarity settings.
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