P&E Microcomputer Systems Cyclone LC Series, Руководство пользователя

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User Manual For Cyclone LC Programmers 75
8.2.4.3 Cyclone Connecting / Disconnecting Calls
8.2.4.3.1 connectToCyclone
uint32_t connectToCyclone(char *nameIpOrPortIdentifier) ;
This function opens a session with a Cyclone and tests the connection. The handle returned by
this function is passed as a parameter to other functions provided by the DLL. If you connect to a
Cyclone that already has a handle, the same handle is returned. If there is a failure contacting the
Cyclone, the function returns a 0.
Note that the DLL does not support multiple Cyclones connected via the serial port. If you require
more than one Cyclone to use a serial port connection, PEmicro recommends using the RS232
communication protocols.
8.2.4.3.2 connectToMultipleCyclones
bool connectToMultipleCyclones(char *nameIpOrPortIdentifierArray,
multipleCycloneHandleArrayPtrType cycloneHandleArrayPointer, int32_t
*numberOfCycloneOpensAttempted);
This function returns a array of handles to opened Cyclones from a null-terminated String of
comma delimited identifiers.
@parameter
informationType
Specifies the property of the Cyclone to return. The possible values
are:
• CycloneInformationation_IP_Address
• CycloneInformation_Name
• CycloneInformation_Generic_port_number
@returnvalue
A pointer to a null-terminated string containing the property value of
the specified Cyclone.
@parameter
nameIPOrPortIdentifier
A pointer to a null-terminated string which uniquely identifies the
Cyclone connected to the host PC.
If identifying by IP address, the string should be in the format of
xxx.xxx.xxx.xxx, where xxx = 0…255.
If identifying by name, the string should contain the name of the
Cyclone.
If identifying by port and the Cyclone is connected by USB, the
string should be USB# where # is 1…8. If the Cyclone is
connected by Ethernet, the string should be in the format of
xxx.xxx.xxx.xxx, where xxx = 0…255.
If the Cyclone is connected by Serial, the string should be
COM1.
@returnvalue
The handle to the opened Cyclone unit. A return value of 0
indicates a failure to connect to the specified Cyclone unit.