1*4882a593SmuzhiyunWhat: /sys/bus/iio/devices/triggerX/trigger_polarity 2*4882a593SmuzhiyunKernelVersion: 4.11 3*4882a593SmuzhiyunContact: fabrice.gasnier@st.com 4*4882a593SmuzhiyunDescription: 5*4882a593Smuzhiyun The STM32 ADC can be configured to use external trigger sources 6*4882a593Smuzhiyun (e.g. timers, pwm or exti gpio). Then, it can be tuned to start 7*4882a593Smuzhiyun conversions on external trigger by either: 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun - "rising-edge" 10*4882a593Smuzhiyun - "falling-edge" 11*4882a593Smuzhiyun - "both-edges". 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun Reading returns current trigger polarity. 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun Writing value before enabling conversions sets trigger polarity. 16*4882a593Smuzhiyun 17*4882a593SmuzhiyunWhat: /sys/bus/iio/devices/triggerX/trigger_polarity_available 18*4882a593SmuzhiyunKernelVersion: 4.11 19*4882a593SmuzhiyunContact: fabrice.gasnier@st.com 20*4882a593SmuzhiyunDescription: 21*4882a593Smuzhiyun List all available trigger_polarity settings. 22