Perl - API Bindings

The Perl bindings allow you to control Bricks and Bricklets from your Perl scripts. The ZIP file for the bindings contains:

  • in source/ the source code of the bindings (installable with Makefile.PL script)
  • in examples/ the examples for every Brick and Bricklet

Requirements

  • Perl 5.14 or newer with thread support, Digest::HMAC_SHA1 module and Thread::Queue module 3.02 or newer

Installation

There are two ways to install the Perl bindings: from CPAN or from source. But the bindings can also be used without installing them first.

From CPAN

The bindings are also available on the Comprehensive Perl Archive Network CPAN. You can install them with the CPANminus tool cpanm using the following command (in this case you don't even need the ZIP file for the bindings). Depending on your Perl installation you might have to execute this with sudo or as administrator:

cpanm Tinkerforge

Now you're ready to test the examples. The CPAN package does not include the examples. Those are available as part of the bindings ZIP file.

From Source

The source/ directory contains a Makefile.PL script. To install the bindings just execute the following commands in the source/ directory. Depending on your Perl installation you might have to execute this with sudo or as administrator:

perl Makefile.PL
make
make test
make install

Now you're ready to test the examples.

Without Installation

You can use the bindings without having to install them. Just put the Tinkerforge/ folder from source/lib/ folder in the same folder as your Perl script. The section about testing an example has more details about this.

Testing an Example

To test a Perl example Brick Daemon and Brick Viewer have to be installed first. Brick Daemon acts as a proxy between the USB interface of the Bricks and the API bindings. Brick Viewer connects to Brick Daemon and helps to figure out basic information about the connected Bricks and Bricklets.

As an example let's test the configuration example for the Stepper Brick. For this copy the example_configuration.pl file from the examples/brick/stepper/ folder into a new folder:

example_project/
 -> example_configuration.pl

In the example HOST and PORT specify at which network address the Stepper Brick can be found. If it is connected locally to USB then localhost and 4223 is correct. The UID value has to be changed to the UID of the connected Stepper Brick, which you can figure out using Brick Viewer:

use constant HOST => 'localhost';
use constant PORT => 4223;
use constant UID => 'XYZ'; # Change to your UID

If you did install the bindings from source or CPAN then you're now ready to test this example:

perl example_configuration.pl

If you did not install the bindings then you can also use the source of the bindings directly. Just copy the Tinkerforge/ folder from the source/lib/ folder to your example_project/ folder:

example_project/
 -> Tinkerforge/
 -> example_configuration.pl

Then the following line has to be added to the beginning of the example to make Perl find the Tinkerforge/ folder:

use lib './';

Now you're ready to test this example:

perl example_configuration.pl

Known Problems

There are known deadlock problems on Windows with Strawberry Perl and Active State Perl. The recommended workaround is to use Cygwin Perl that doesn't suffer from this problem. See this PerlMonks thread for some details.

API Reference and Examples

Links to the API reference for the IP Connection, Bricks and Bricklets as well as the examples from the ZIP file of the bindings are listed in the following table. Further project descriptions can be found in the Starter Kits section.

  API Examples
IP Connection API Examples
     
Bricks    
DC API Examples
IMU API Examples
IMU 2.0 API Examples
Master API Examples
RED API Examples
Servo API Examples
Silent Stepper API Examples
Stepper API Examples
     
Bricklets    
Accelerometer API Examples
Ambient Light API Examples
Ambient Light 2.0 API Examples
Analog In API Examples
Analog In 2.0 API Examples
Analog Out API Examples
Analog Out 2.0 API Examples
Barometer API Examples
CAN API Examples
CO2 API Examples
Color API Examples
Current12 API Examples
Current25 API Examples
Distance IR API Examples
Distance US API Examples
Dual Button API Examples
Dual Relay API Examples
Dust Detector API Examples
GPS API Examples
GPS 2.0 API Examples
Hall Effect API Examples
Humidity API Examples
Industrial Analog Out API Examples
Industrial Digital In 4 API Examples
Industrial Digital Out 4 API Examples
Industrial Dual 0-20mA API Examples
Industrial Dual Analog In API Examples
Industrial Quad Relay API Examples
IO-16 API Examples
IO-4 API Examples
Joystick API Examples
Laser Range Finder API Examples
LCD 16x2 API Examples
LCD 20x4 API Examples
LED Strip API Examples
Line API Examples
Linear Poti API Examples
Load Cell API Examples
Moisture API Examples
Motion Detector API Examples
Multi Touch API Examples
NFC/RFID API Examples
OLED 128x64 API Examples
OLED 64x48 API Examples
Piezo Buzzer API Examples
Piezo Speaker API Examples
PTC API Examples
Real-Time Clock API Examples
Remote Switch API Examples
RGB LED API Examples
Rotary Encoder API Examples
Rotary Poti API Examples
RS232 API Examples
Segment Display 4x7 API Examples
Solid State Relay API Examples
Sound Intensity API Examples
Temperature API Examples
Temperature IR API Examples
Thermocouple API Examples
Tilt API Examples
UV Light API Examples
Voltage API Examples
Voltage/Current API Examples