NAME

Device::Chip::MAX44009 - chip driver for MAX44009

SYNOPSIS

   use Device::Chip::MAX44009;
   use Future::AsyncAwait;

   my $chip = Device::Chip::MAX44009->new;
   await $chip->mount( Device::Chip::Adapter::...->new );

   await $chip->power(1);

   sleep 1; # Wait for one integration cycle

   printf "Current ambient light level is %.2f lux\n",
      scalar await $chip->read_lux;

DESCRIPTION

This Device::Chip subclass provides specific communication to a Maxim Integrated MAX44009 ambient light sensor attached to a computer via an I²C adapter.

The reader is presumed to be familiar with the general operation of this chip; the documentation here will not attempt to explain or define chip-specific concepts or features, only the use of this module to access them.

read_config

   $config = await $chip->read_config

Returns a HASH reference containing the chip config, using fields named from the data sheet.

   CONT   => bool
   MANUAL => bool
   CDR    => bool
   TIM    => 800 | 400 | 200 | 100 | 50 | 25 | 12.5 | 6.25

change_config

   await $chip->change_config( %changes )

Writes updates to the configuration registers.

Note that these two methods use a cache of configuration bytes to make subsequent modifications more efficient.

read_lux

   $lux = await $chip->read_lux

Reads the latest light level conversion value and returns the value in Lux.

AUTHOR

Paul Evans <leonerd@leonerd.org.uk>