Class tasciicommport
Unit
Declaration
type tasciicommport = class(tcommport)
Description
This item has no description. Showing description inherited from tcommport.
Base class for custom serial protocol drivers, often connected to an RS485 bus: build your own tcommport and tcommthread descendants to implement a protocol, as tasciicommport/tasciicommthread do for ASCII protocols. thread.readstring(count,dest,timeoutus) reads a fixed number of bytes from the port thread; lower level access is possible through thread.port, e.g. thread.port.readbuffer. The state of the control lines is not used by these components; use trs232.handle with the OS serial API if you need them.
Hierarchy
- TObject
- tpersistent
- tcomponent
- tmsecomponent
- tcommport
- tasciicommport
Overview
Methods
| Protected | function geteventclass: asciicommeventclassty; virtual; |
| Public | constructor create(aowner: tcomponent); override; |
| Public | function send(const commandstring: string; out answer: string; atimeout: integer = 0): integer; overload; |
| Public | function send(const commandstrings: array of string): integer; overload; |
Properties
| Public | property thread: tasciicommthread read getthread; |
| Published | property halfduplex; |
| Published | property eorchar: char read geteorchar write seteorchar default defaulteorchar; |
Description
Methods
| Protected | function geteventclass: asciicommeventclassty; virtual; |
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| Public | constructor create(aowner: tcomponent); override; |
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| Public | function send(const commandstring: string; out answer: string; atimeout: integer = 0): integer; overload; |
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| Public | function send(const commandstrings: array of string): integer; overload; |
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Properties
| Public | property thread: tasciicommthread read getthread; |
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| Published | property halfduplex; |
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| Published | property eorchar: char read geteorchar write seteorchar default defaulteorchar; |
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