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