NAME

Device::Chip::MCP3221 - chip driver for MCP3221

SYNOPSIS

 use Device::Chip::MCP3221;

 my $chip = Device::Chip::MCP3221->new;
 $chip->mount( Device::Chip::Adapter::...->new )->get;

 printf "The reading is %d\n", $chip->read_adc->get;

DESCRIPTION

This Device::Chip subclass provides specific communications to a Microchip MCP3221 chip.

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.

MOUNT PARAMETERS

addr

The I²C address of the device. Can be specified in decimal, octal or hex with leading 0 or 0x prefixes.

METHODS

The following methods documented with a trailing call to ->get return Future instances.

read_adc

   $value = $chip->read_adc->get

Performs a conversion and returns the result as a plain unsigned 12-bit integer.

read_adc_ratio

   $ratio = $chip->read_adc_ratio->get

Performs a conversion and returns the result as a floating-point number between 0 and 1.

AUTHOR

Paul Evans <leonerd@leonerd.org.uk>