Circuits.I2C.discover
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discover
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Specs
Scan all I2C buses for one or more devices
This function takes a list of possible addresses and an optional detection function. It only scans addresses in the possible addresses list to avoid disturbing unrelated I2C devices.
If a detection function is not passed in, a default one that performs a
simple read and checks whether it succeeds is used. If the desired device has
an ID register or other means of identification, the optional function should
try to query that. If passing a custom function, be sure to return false
rather than raise if there are errors.
A list of bus name and address tuples is returned. The list may be empty.
See also discover_one/2
.