C tutorial : C language function

C tutorial : C language function

Table of Contents:

1.Introduction .......................................................................................... 3

2.C function ............................................................................................. 3

2.1 Functions .................................................................................. 3

2.1.1 Public functions ............................................................... 3

2.1.2 Performance functions ..................................................... 4

2.2 Predefined value type ................................................................. 4

2.3 Predefined value table ............................................................... 4

2.3.1 Constant .......................................................................... 4

2.3.2 Serial port ........................................................................ 4

2.3.3 Internal registers .............................................................. 5

2.3.4 Value length ..................................................................... 5

2.4 Macro ......................................................................................... 5

2.5 Direct operation for HMI internal registers ................................. 6

2.5.1 PSW registers .................................................................. 6

2.5.2 PSB operation functions .................................................. 6

2.6 Notice ......................................................................................... 7

3.Application ........................................................................................... 8

3.1 Purpose ..................................................................................... 8

3.2 Device ...................................................................................... 8

3.3 Reference manual ..................................................................... 8

3.4 Steps ......................................................................................... 8

4. Make the project .................................................................................. 9

4.1 Make C function ......................................................................... 9

4.2 Edit the C function .................................................................. 10

4.3 Make the HMI program .......................................................... 12

----------------------------------------

Sample of the pdf document :

1. Introduction

C language function is added in the Touchwin software v2.C.6 and higher version. With this new function; TH and TP series HMI can realize more complicated operations.
We will explain the C function programming rules with simple examples.


2. C function

 2.1 Functions
The C function writing mode is the same as C language. C functions include public functions and performance functions.

    2.1.1 Public functions
Public functions: support basic call for performance functions. It needs to write function prototype, parameters and return value are allowed.

Example:

DWORD Crc(BYTE* pBytes, int Length)

{

DWORD dwCrc = 0;

…

return dwCrc;

}

Call performance functions in public functions:

void CallFunction()

{

Func1();

}.............

 Click here for  Download PDF / FREE

C tutorial : C language function