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- What: /sys/bus/iio/devices/triggerX/master_mode_available
- KernelVersion: 4.11
- Contact: benjamin.gaignard@st.com
- Description:
- Reading returns the list possible master modes which are:
- - "reset" : The UG bit from the TIMx_EGR register is
- used as trigger output (TRGO).
- - "enable" : The Counter Enable signal CNT_EN is used
- as trigger output.
- - "update" : The update event is selected as trigger output.
- For instance a master timer can then be used
- as a prescaler for a slave timer.
- - "compare_pulse" : The trigger output send a positive pulse
- when the CC1IF flag is to be set.
- - "OC1REF" : OC1REF signal is used as trigger output.
- - "OC2REF" : OC2REF signal is used as trigger output.
- - "OC3REF" : OC3REF signal is used as trigger output.
- - "OC4REF" : OC4REF signal is used as trigger output.
- What: /sys/bus/iio/devices/triggerX/master_mode
- KernelVersion: 4.11
- Contact: benjamin.gaignard@st.com
- Description:
- Reading returns the current master modes.
- Writing set the master mode
- What: /sys/bus/iio/devices/triggerX/sampling_frequency
- KernelVersion: 4.11
- Contact: benjamin.gaignard@st.com
- Description:
- Reading returns the current sampling frequency.
- Writing an value different of 0 set and start sampling.
- Writing 0 stop sampling.
- What: /sys/bus/iio/devices/iio:deviceX/in_count0_preset
- KernelVersion: 4.12
- Contact: benjamin.gaignard@st.com
- Description:
- Reading returns the current preset value.
- Writing sets the preset value.
- When counting up the counter starts from 0 and fires an
- event when reach preset value.
- When counting down the counter start from preset value
- and fire event when reach 0.
- What: /sys/bus/iio/devices/iio:deviceX/in_count_quadrature_mode_available
- KernelVersion: 4.12
- Contact: benjamin.gaignard@st.com
- Description:
- Reading returns the list possible quadrature modes.
- What: /sys/bus/iio/devices/iio:deviceX/in_count0_quadrature_mode
- KernelVersion: 4.12
- Contact: benjamin.gaignard@st.com
- Description:
- Configure the device counter quadrature modes:
- channel_A:
- Encoder A input servers as the count input and B as
- the UP/DOWN direction control input.
- channel_B:
- Encoder B input serves as the count input and A as
- the UP/DOWN direction control input.
- quadrature:
- Encoder A and B inputs are mixed to get direction
- and count with a scale of 0.25.
- What: /sys/bus/iio/devices/iio:deviceX/in_count_enable_mode_available
- KernelVersion: 4.12
- Contact: benjamin.gaignard@st.com
- Description:
- Reading returns the list possible enable modes.
- What: /sys/bus/iio/devices/iio:deviceX/in_count0_enable_mode
- KernelVersion: 4.12
- Contact: benjamin.gaignard@st.com
- Description:
- Configure the device counter enable modes, in all case
- counting direction is set by in_count0_count_direction
- attribute and the counter is clocked by the internal clock.
- always:
- Counter is always ON.
- gated:
- Counting is enabled when connected trigger signal
- level is high else counting is disabled.
- triggered:
- Counting is enabled on rising edge of the connected
- trigger, and remains enabled for the duration of this
- selected mode.
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