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87aec56e27
Add driver for the TI AFE4404 heart rate monitor and pulse oximeter. This device detects reflected LED light fluctuations and presents an ADC value to the user space for further signal processing. Datasheet: http://www.ti.com/product/AFE4404/datasheet Signed-off-by: Andrew F. Davis <afd@ti.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
55 lines
1.8 KiB
Plaintext
55 lines
1.8 KiB
Plaintext
What: /sys/bus/iio/devices/iio:deviceX/tia_resistanceY
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/sys/bus/iio/devices/iio:deviceX/tia_capacitanceY
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Date: December 2015
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KernelVersion:
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Contact: Andrew F. Davis <afd@ti.com>
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Description:
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Get and set the resistance and the capacitance settings for the
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Transimpedance Amplifier. Y is 1 for Rf1 and Cf1, Y is 2 for
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Rf2 and Cf2 values.
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What: /sys/bus/iio/devices/iio:deviceX/tia_separate_en
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Date: December 2015
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KernelVersion:
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Contact: Andrew F. Davis <afd@ti.com>
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Description:
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Enable or disable separate settings for the TransImpedance
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Amplifier above, when disabled both values are set by the
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first channel.
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What: /sys/bus/iio/devices/iio:deviceX/in_intensity_ledY_raw
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/sys/bus/iio/devices/iio:deviceX/in_intensity_ledY_ambient_raw
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Date: December 2015
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KernelVersion:
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Contact: Andrew F. Davis <afd@ti.com>
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Description:
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Get measured values from the ADC for these stages. Y is the
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specific LED number. The values are expressed in 24-bit twos
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complement.
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What: /sys/bus/iio/devices/iio:deviceX/in_intensity_ledY-ledY_ambient_raw
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Date: December 2015
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KernelVersion:
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Contact: Andrew F. Davis <afd@ti.com>
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Description:
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Get differential values from the ADC for these stages. Y is the
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specific LED number. The values are expressed in 24-bit twos
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complement for the specified LEDs.
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What: /sys/bus/iio/devices/iio:deviceX/out_current_ledY_offset
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/sys/bus/iio/devices/iio:deviceX/out_current_ledY_ambient_offset
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Date: December 2015
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KernelVersion:
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Contact: Andrew F. Davis <afd@ti.com>
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Description:
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Get and set the offset cancellation DAC setting for these
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stages. The values are expressed in 5-bit sign-magnitude.
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What: /sys/bus/iio/devices/iio:deviceX/out_current_ledY_raw
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Date: December 2015
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KernelVersion:
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Contact: Andrew F. Davis <afd@ti.com>
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Description:
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Get and set the LED current for the specified LED. Y is the
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specific LED number.
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