36 lines
1.1 KiB
Plaintext
36 lines
1.1 KiB
Plaintext
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Austrian Microsystems AS3935 Franklin lightning sensor device driver
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Required properties:
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- compatible: must be "ams,as3935"
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- reg: SPI chip select number for the device
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- spi-max-frequency: specifies maximum SPI clock frequency
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- spi-cpha: SPI Mode 1. Refer to spi/spi-bus.txt for generic SPI
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slave node bindings.
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- interrupt-parent : should be the phandle for the interrupt controller
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- interrupts : the sole interrupt generated by the device
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Refer to interrupt-controller/interrupts.txt for generic
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interrupt client node bindings.
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Optional properties:
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- ams,tuning-capacitor-pf: Calibration tuning capacitor stepping
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value 0 - 120pF. This will require using the calibration data from
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the manufacturer.
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- ams,nflwdth: Set the noise and watchdog threshold register on
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startup. This will need to set according to the noise from the
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MCU board, and possibly the local environment. Refer to the
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datasheet for the threshold settings.
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Example:
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as3935@0 {
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compatible = "ams,as3935";
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reg = <0>;
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spi-max-frequency = <400000>;
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spi-cpha;
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interrupt-parent = <&gpio1>;
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interrupts = <16 1>;
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ams,tuning-capacitor-pf = <80>;
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ams,nflwdth = <0x44>;
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};
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