Device configuration using a magnetic field
AssigneeAllegro MicroSystems, LLC
InventorsJesse Lapomardo, Craig S. Petrie, Matthew Regan, Michael C. Doogue
Life of this patent
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Abstract
Described embodiments provide a device configured to be coupled to a shared bus. The device includes a magnetic field sensing element to sense a magnetic field. Upon receiving a configuration command over the shared bus, the device determines whether a parameter of the sensed magnetic field meets a predetermined criteria. If the parameter of the sensed magnetic field meets the predetermined criteria, the device responds to the configuration command by applying one or more configuration settings. Otherwise, if the parameter of the sensed magnetic field does not meet the predetermined criteria, the device ignores the configuration command.
Claims36
A device configured to be coupled to a shared bus, the device comprising:
- a magnetic field sensing element configured to sense a magnetic field;
- wherein, upon receiving a configuration command over the shared bus, the device is configured to:
- determine whether a parameter of the sensed magnetic field meets predetermined criteria;
- and
- if the parameter of the sensed magnetic field meets the predetermined criteria, the device is configured to respond to the configuration command by applying one or more configuration settings;
- otherwise, if the parameter of the sensed magnetic field does not meet the predetermined criteria, the device is configured to ignore the configuration command.
A method of configuring each of a plurality of devices coupled to a shared bus, the method comprising:
- receiving a configuration command over the shared bus;
- determining, by a magnetic field sensing element of each of the plurality of devices, whether a parameter of a sensed magnetic field meets predetermined criteria;
- applying, by each of the plurality of devices having a parameter of the sensed magnetic field meeting the predetermined criteria, one or more configuration settings;
- and
- ignoring the configuration command by each of the plurality of devices that do not have a parameter of the sensed magnetic field that meets the predetermined criteria.
The method of claim. 13, wherein the one or more configuration settings comprise a unique bus address.
A system comprising:
- a master and a plurality of devices each coupled to a shared bus, wherein:
- the master is configured to send a configuration command over the shared bus;
- and
- each of the plurality of devices are configured to determine whether a parameter of a sensed magnetic field meets predetermined criteria, wherein each of the plurality of devices having a parameter of the sensed magnetic field value meeting the predetermined criteria are configured to respond to the configuration command by applying one or more configuration settings, and each of the plurality of devices not having a parameter of the sensed magnetic field meeting the predetermined criteria are configured to ignore the configuration command.
Dependencies are inferred from the claim text.