Instead of sending an empty write request to every possible address on
the bus to see which devices respond, send it only to the one address
that we are checking. This is not only much faster and more robust
(there might be devices on the bus that respond badly to such requests
at the wrong speed) but also makes it much easier to debug things with a
logic analyzer, as it doesn't get flooded with all those requests.
tannewt
commented
7 years ago
Instead of sending an empty write request to every possible address on the bus to see which devices respond, send it only to the one address that we are checking. This is not only much faster and more robust (there might be devices on the bus that respond badly to such requests at the wrong speed) but also makes it much easier to debug things with a logic analyzer, as it doesn't get flooded with all those requests.