TWSI(3)                                                   TWSI(3)

     NAME
          twsi - two-wire serial interface (TWSI) and inter-integrated
          circuit (I²C) interface

     SYNOPSIS
          bind -a #⁲ /dev

          /dev/twsi*

     DESCRIPTION
          The twsi device serves a one-level directory containing one
          file per TWSI or I²C bus.  Bytes written are transmitted on
          the bus; bytes received from the bus are queued and deliv-
          ered by reading.  Seeking to a given offset before reading
          or writing causes the twsi device to use that offset as a
          TWSI slave address for a subsequent read(2) or write call.

     FILES
          #⁲/twsi*

     SOURCE
          /sys/src/9/*/devtwsi.c

     BUGS
          10-bit addressed devices are not supported.

          No slave mode.

          Setting the bus rate is not supported.



     Page 1                       Plan 9            (printed 12/21/24)