: retval = checkI2CAddress (ar, address) ¶

: retval = checkI2CAddress (ar, address, bus) ¶

Check that an address of given address responds on the I2C bus

Inputs

ar - arduino object connected to a arduino board.

address - I2C address number to check

bus - bus number to check for I2C device, when multiple buses are available. If the bus is not specified, it will default to 0.

Outputs

retval - boolean value of true if address responds on the I2C bus

Example

# create arduino connection.
ar = arduino();
# scan for devices on the I2C bus
checkI2CAddress (ar)
# output if a device using that address is attached
ans =
  1

See also: arduino, scanI2Cbus.

Package: arduino