Echelon Mini FX - Manual (Page 82)

Mini FX User's Guide 69
Declaration Example
Configuration Properties
SCPTdefOutput cp_family cpDefaultOut;
Functional Blocks
fblock SFPTnodeObject { … } myNode;
Getting Started with Neuron C
This section provides a series of Neuron C examples that demonstrate how to use Neuron
C to perform I/O functions. These programming examples are designed to work with
both the FT 5000 EVB and the PL 3150/PL 3170 EVB, with minor functional differences
based on the hardware and system resources on the boards. The examples use the I/O
devices on the FT 5000 EVB, and the Mini Gizmo I/O board that you can attach to a PL
3150/PL 3170 EVB. The I/O devices used in these examples include the push buttons,
LEDs, temperature sensors, serial ports, and displays on the boards. By following these
examples, you will create a set of I/O utility functions that is summarized in I/O
Examples Toolkit later in this chapter. These utility functions are used in the
subsequent example device applications.
This section then provides a series of increasingly complex device applications based on
the I/O examples. These device applications introduce Neuron C and device development
concepts such as I/O objects and timers, network variables, configuration properties,
functional profiles, and Interoperable Self-Installation (ISI). The device applications are
as follows:
• A digital sensor that senses a push button, and a digital actuator that drives an LED.
• A thermostat that samples ambient temperature readings, displays current and
setpoint temperature values, executes a controller algorithm to drive a heating and
cooling system, and provides status information.
You can copy the programming examples or the complete device applications to a text
editor, save them to a file with an .nc extension, and then build and download them into
your EVB with the Mini FX Application.
Note: You must use the .nc file extension for Neuron C source code. You cannot use the
.c file extension, which is common to ANSI C programmers. If you compile code
packaged in a file with a .c file extension, the Neuron C Compiler classifies the source as
“pure C” and disables most of the Neuron C extensions. As a result, you will not be able
to download the resulting application image file into a Neuron Chip or Smart
Transceiver. You cannot use the Mini kit to create user-defined function libraries with
the pure C feature, but you can use the NodeBuilder tool to create them with pure C.
If you have changed the jumper configurations on your EVB, you must return them to
their default settings to run the examples provided in this chapter. Table 5-3 lists the
minimum jumper configurations required for the FT 5000 EVB, PL 3150 EVB, and PL
3170 EVB to run the examples. The table lists separately the jumper pins that must be
connected and disconnected.
See the FT 5000 EVB Hardware Guide for more information on the jumper locations and
settings of the FT 5000 EVB. See the Mini FX/PL Examples Guide for more information
on the jumper locations and settings of the PL 3150/PL 3170 EVB.