What: /sys/bus/iio/devices/triggerX/trigger_polarity KernelVersion: 4.11 Contact: fabrice.gasnier@st.com Description: The STM32 ADC can be configured to use external trigger sources (e.g. timers, pwm or exti gpio). Then, it can be tuned to start conversions on external trigger by either: - "rising-edge" - "falling-edge" - "both-edges". Reading returns current trigger polarity. Writing value before enabling conversions sets trigger polarity. What: /sys/bus/iio/devices/triggerX/trigger_polarity_available KernelVersion: 4.11 Contact: fabrice.gasnier@st.com Description: List all available trigger_polarity settings.
