NAME
Device::Chip::INA219 - chip driver for an INA219
SYNOPSIS
use Device::Chip::INA219;
my $chip = Device::Chip::INA219->new;
$chip->mount( Device::Chip::Adapter::...->new )->get;
printf "Current bus voltage is %d mV, shunt voltage is %d uV\n",
$chip->read_bus_voltage->get, $chip->read_shunt_voltage->get;
DESCRIPTION
This Device::Chip subclass provides specific communication to a Texas
Instruments INA219 attached to a computer via an I�C 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.
MOUNT PARAMETERS
addr
The I�C 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_config
$config = $chip->read_config->get
Reads and returns the current chip configuration as a HASH reference.
change_config
$chip->change_config( %config )->get
Changes the configuration. Any field names not mentioned will be
preserved.
read_shunt_voltage
$uv = $chip->read_shunt_voltage->get
Returns the current shunt voltage reading scaled integer in microvolts.
read_bus_voltage
$mv = $chip->read_bus_voltage->get
( $mv, $ovf, $cnvr ) = $chip->read_bus_voltage->get
Returns the current bus voltage reading, as a scaled integer in
milivolts.
The returned Future also yields the OVF and CNVR flags.
AUTHOR
Paul Evans <
[email protected]>
