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>