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This module currently provides a front end to the w1 Kernel device driver. Currently only a simple read function is implemented. Enough to support reading the output of temperature devices.
See : W1 Device Driver
Loading and configuring the kernel 1 Wire driver is controlled by configuring the device tree in your /boot/config.txt file.
See : Using the Device Tree
The connected devices on your One Wire bus can be seen in the HiPi Control GUI if you are using the kernel driver.
The following interface module uses HiPi::Device::OneWire as a backend and may contain code that helps with your own usage.
Returns an array of hash references providing details of the connected 1 wire devices. the four hash keys are id e.g. 28-00000400bed1 family e.g. 28 name e.g. 18B20 description e.g. programmable resolution digital thermometer my @devices = HiPi::Device::OneWire->list_slaves(); for my $w1 ( @devices ) { for ( qw( id family name description ) ) { print qq($_ = $w1->{$_}n); } }
Returns true or false according to whether the specified $id is connected to the kernel device.
Returns the content of the file /sys/bus/w1/devices/$id/w1_slave It is up to the caller to parse the content