Crestron SIMPL+ 软件编程指南

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Crestron SIMPL+软件编程指南 Crestron SIMPL+是一款专业的软件编程工具，由Crestron Electronics开发，旨在帮助用户快速、简洁地编程和控制 Crestron 的自动化系统。下面是Crestron SIMPL+软件编程指南中的一些重要知识点： 1. Crestron SIMPL+软件许可协议：Crestron产品开发软件是根据有限的非排他、不可转让的软件开发工具许可协议许可给Crestron经销商和Crestron服务提供商（CSPs）的。同时，Crestron产品操作系统软件是根据单独的最终用户许可协议许可给Crestron经销商、CSPs和最终用户的。 2. 软件开发工具许可协议：Crestron软件开发工具许可协议可以在Crestron网站的法律页面（www.crestron.com/legal/software_license_agreement）上找到。 3. 产品保修信息：Crestron产品保修信息可以在www.crestron.com/warranty上找到。 4. 专利信息：Crestron产品所涵盖的专利列表可以在www.crestron.com/legal/patents上找到。 5. 开源软件信息：Crestron某些产品包含开源软件，相关信息可以在www.crestron.com/opensource上找到。 6.Crestron商标信息：Crestron、Crestron徽标、3-Series Control System、Crestron Toolbox和SIMPL+都是Crestron Electronics的商标或注册商标。 7.Crestron SIMPL+软件编程指南：Crestron SIMPL+软件编程指南提供了详细的编程指南和示例代码，帮助用户快速上手 Crestron SIMPL+软件编程。 8.Crestron产品系列：Crestron提供了多种产品系列，包括控制系统、音视频系统、照明控制系统等，每种产品系列都有其特点和应用场景。 9.Crestron SIMPL+软件特点：Crestron SIMPL+软件具有强大的编程能力、灵活的控制方式和高效的执行速度，能够满足复杂的自动化控制需求。 10.Crestron SIMPL+软件应用场景：Crestron SIMPL+软件广泛应用于智能家居、商业建筑、酒店、教育机构、医疗机构等领域，帮助用户实现自动化控制和智能管理。 Crestron SIMPL+软件编程指南为用户提供了详细的编程指南和示例代码，帮助用户快速上手 Crestron SIMPL+软件编程，并且提供了丰富的知识点和应用场景，帮助用户深入了解 Crestron SIMPL+软件的特点和应用价值。

6 • Crestron® SIMPL+® Software Programming Guide — Doc. 5789B

The startup text I am born appeared before Debugger was started because Function

Main only runs on system startup. To see it now, reboot the control processor by selecting

Options > Reset Rack.

Programming Guide — Doc. 5789B Crestron® SIMPL+® Software • 7

The Structure of a SIMPL+ Program

This section provides an overview of the code structure that makes up a SIMPL+ program

in the typical order that it is used.

Compiler Directives

Compiler directives provide explicit instructions to the compiler and should appear at the

beginning of the program. These elements are not part of the SIMPL+ language itself.

These directives are distinguished from actual SIMPL+ code by preceding them with a

pound sign (#).

Currently there are thirty compiler directives, nineteen of which are provided in the

template file that is created when a new program is started. The compiler directives are as

follows:

l #SYMBOL_NAME:Allows the user to specify the name that SIMPL Windows uses for

this module. If this directive is left out, the filename will be used by default.

l #HINT: Provides text that appears in the SIMPL Windows status bar whenever the

module icon is clicked on.

l #CATEGORY: (SIMPL+ 3.0 and later) Specifies the SIMPL Windows symbol tree

category number for this SIMPL+ module, which controls where the SIMPL+ module

is listed in the symbol tree in Program Manager. Selecting Edit > Insert Category

from the menu will display a list of available categories to choose from and

automatically insert the selected category in to the program module.

l #DEFAULT_NONVOLATILE: (SIMPL+ 3.0 and later) Specifies that all program

variables will retain their values if hardware power is lost. If neither the #DEFAULT_

VOLATILE nor #DEFAULT_NONVOLATILE are specified, the compiler will default all

variables declared within the SIMPL+ module as nonvolatile in CNX-series control

processors. In 2-series, 3-series, or later, the compiler will default all variables as

volatile.

l #DEFAULT_VOLATILE: (SIMPL+ 3.0 and later) Program variables will not retain

their value if hardware power is lost.

l #HELP_BEGIN / #HELP_END: Allows online help to be entered for this module. This

text appears when the user selects the module and presses F1 from within SIMPL

Windows.

l #DEFINE_CONSTANT: Allows constant numeric/string values to be assigned to

alphanumeric names. This is extremely useful for writing changeable and readable

code.

Using constant definitions are a very important part of writing readable code. To illustrate

this, examine the following example:

8 • Crestron® SIMPL+® Software Programming Guide — Doc. 5789B

PUSH vcr_select

{

switcher_input = 3;

switcher_output = 2; // video projector

}

PUSH dvd_select

{

switcher_input = 4;

switcher_output = 2; // video projector

}

In this example, the value of the variable switcher_input is set to 3 if the VCR button is

pressed or 4 if the DVD button is pressed. In both cases, switcher_output is set to 2,

which is the output connected to the video projector. In a larger program, these variables

would be used somewhere else to generate a command string to control a switcher. Using

numbers in a small program like this still produces a readable program, though there are

problems with it. For instance, If the switcher configuration is changed and the inputs and

outputs are rearranged, the user must change all the appropriate values in the program

for the switcher input and output.

Examine the following equivalent program, which uses constant definitions in place of

actual numbers:

#DEFINE_CONSTANT VCR_INPUT 3

#DEFINE_CONSTANT DVD_INPUT 4

#DEFINE_CONSTANT VPROJ_OUTPUT 2

PUSH vcr_select

{

switcher_input = VCR_INPUT;

switcher_output = VPROJ_OUTPUT; // video projector

}

PUSH dvd_select

{

switcher_input = DVD_INPUT;

switcher_output = VPROJ_OUTPUT; // video projector

}

In this version of the program, the code is more readable, and it is obvious that changing a

numeric value in one place (the #DEFINE_CONSTANT) can affect the value everywhere in the

program. Using capital letters for constant definitions is not required, but it clarifies the

difference between variables and constants when reading through a program.

Include Libraries

Libraries are a means of grouping common functions into one source file to enable

modularity and reusability of source code. Libraries are different from modules in that

they do not contain a starting point (Function Main), and they cannot interact with the

control system (through I/O signals and events). Libraries can include other libraries, but

they cannot include a SIMPL+ module. Only functions and defined constants are allowed to

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