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2026-06-10

通过DMA写入指定地址的字符串 - DmaWriteString ​

函数简介 ​

通过 DMA 写入指定地址的字符串，支持多种字符串编码格式和 CE 地址格式。(高级版功能,普通版无法使用)

接口名称 ​

DmaWriteString

DLL调用 ​

c
int32_t OLA_CALL_TYPE DmaWriteString(int64_t instance, int64_t deviceId, int32_t pid, OLA_STRING_INPUT addr, int32_t type, OLA_STRING_INPUT value);

参数说明 ​

参数名类型说明
instance长整数型OLAPlug对象的指针，由 CreateCOLAPlugInterFace 接口生成。
deviceId长整数型设备ID
pid整数型进程 PID
addr字符串地址，支持 CE 数据格式
type整数型字符串类型：0=Ascii, 1=Unicode, 2=UTF8
value字符串要写入的字符串

示例 ​

SDK 调用 ​

cpp
#include "OLAPlugServer.h"

OLAPlugServer ola;
int ret = ola.DmaWriteString(0, 1234, "value", 0, "admin");
csharp
using OLAPlug;

var ola = new OLAPlugServer();
int ret = ola.DmaWriteString(0, 1234, "value", 0, "admin");
python
from OLAPlugServer import OLAPlugServer

ola = OLAPlugServer()
ret = ola.DmaWriteString(0, 1234, "value", 0, "admin")
java
import com.olaplug.OLAPlugServer;

OLAPlugServer ola = new OLAPlugServer();
int ret = ola.DmaWriteString(0, 1234, "value", 0, "admin");
cpp
var ola = com("OlaPlug.OlaSoft")
var ret = ola.DmaWriteString(0, 1234, "value", 0, "admin")
vbscript
Set ola = CreateObject("OlaPlug.OlaSoft")
ret = ola.DmaWriteString(0, 1234, "value", 0, "admin")
text
.局部变量 ola, OLAPlug
ola.创建 ()
ret ＝ ola.DmaWriteString(0, 1234, “value”, 0, “admin”)
aardio
import OLAPlugServer;
var ola = OLAPlugServer();
var ret = ola.DmaWriteString(0, 1234, "value", 0, "admin");
text
变量 ola <类型 = OLAPlugServer>
ola = 新建 OLAPlugServer
整数 ret = ola.DmaWriteString(0, 1234, "value", 0, "admin")
cpp
#include "OLAPlugServer.h"

OLAPlugServer ola;
int32_t ret = ola.DmaWriteString(0, 1234, "value", 0, "admin");

原生 DLL 调用 ​

cpp
DmaWriteString(instance, 0, 1234, "value", 0, "admin");
csharp
using System.Runtime.InteropServices;
using System.Text;

[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern int DmaWriteString(long ola, int deviceId, int pid, string addr, int type, string value);

DmaWriteString(instance, 0, 1234, "value", 0, "admin");
python
from ctypes import CDLL, c_int, c_int64, create_string_buffer

ola = CDLL("OLAPlug_x64.dll")
ola.CreateCOLAPlugInterFace.restype = c_int64
ola.DmaWriteString(instance, 0, 1234, "value", 0, "admin")

返回值 ​

整数型：1 成功，0 失败。