/**
* @brief A frontend to AdsSyncReadWriteReqEx2() with port = defaultPort and pnRead = NULL
*/
int32_t AdsSyncReadWriteReq(PAmsAddr pAddr,
uint32_t nIndexGroup,
uint32_t nIndexOffset,
uint32_t nReadLength,
void *pReadData,
uint32_t nWriteLength, void *pWriteData)
{
return AdsSyncReadWriteReqEx2(defaultPort, pAddr,
nIndexGroup, nIndexOffset,
nReadLength, pReadData,
nWriteLength, pWriteData,
NULL);
}
uint32_t getHandleByNameExample(std::ostream& out, long port, const AmsAddr& server,
const std::string handleName)
{
uint32_t handle = 0;
const long handleStatus = AdsSyncReadWriteReqEx2(port,
&server,
ADSIGRP_SYM_HNDBYNAME,
0,
sizeof(handle),
&handle,
handleName.size(),
handleName.c_str(),
nullptr);
if (handleStatus) {
out << "Create handle for '" << handleName << "' failed with: " << std::dec << handleStatus << '\n';
}
return handle;
}
uint32_t getSymbolSize(std::ostream& out, long port, const AmsAddr& server, const std::string handleName)
{
AdsSymbolEntry symbolEntry;
uint32_t bytesRead;
const long status = AdsSyncReadWriteReqEx2(port,
&server,
ADSIGRP_SYM_INFOBYNAMEEX,
0,
sizeof(symbolEntry),
&symbolEntry,
handleName.size(),
handleName.c_str(),
&bytesRead);
if (status) {
throw std::runtime_error("Unable to determine symbol size, reading ADS symbol information failed with: " + std::to_string(
status));
}
return symbolEntry.size;
}
