mirror of
https://github.com/brain-hackers/linux-brain.git
synced 2024-06-09 23:36:23 +09:00
732f2dc468
Define extended attribute so that user may choose rising, falling or both edges for external trigger sources. Default to rising edge in case it isn't set. Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
19 lines
640 B
Plaintext
19 lines
640 B
Plaintext
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.
|