GCLIB_DLL_EXPORTED GReturn GCALL GUtility	(	GCon	g,
		GOption	request,
		GMemory	memory1,
		GMemory	memory2
	)

Provides read/write access to driver settings and convenience features based on the request variable.

Note

The open source library, gclibo.h, has wrappers for most of these utilities.

Parameters

g	Connection's handle.
request	Defines the request. Input/Output and type of memory are implicit in the value of request. The following lists the supported request values.

• G_UTIL_TIMEOUT Read initial timeout value, as specified in GOpen() via --timeout switch.
  • memory1 is output and must be a pointer to an unsigned short.
  • memory2 is ignored, use null.
• G_UTIL_TIMEOUT_OVERRIDE See GTimeout(). Write/Read override timeout value.
  • memory1 is input. If nonnull, value must be a pointer to a short which overrides the timeout. Write G_USE_INITIAL_TIMEOUT to use initial timeout. If null, no write occurs.
  • memory2 is output. If nonnul, value must be a pointer to a short which will be filled with the current override. G_USE_INITIAL_TIMEOUT indicates initial timeout used. If null, no read occurs. memory2 is processed before 'memory1`.
• G_UTIL_VERSION See GVersion(). Returns the library version. A valid connection (g) is not necessary, i.e. g may be null.
  • memory1 is output, and must be a GCStringOut. Data will be null terminated, even if the data must be truncated to do so.
  • memory2 is input and must be a pointer to a GSize holding the length of the buffer in memory1.
• G_UTIL_INFO See GInfo(). Returns information about the connection.
  • memory1 is output and must be a GCStringOut. Data will be null terminated, even if the data must be truncated to do so.
  • memory2 is input and must be a pointer to a GSize holding the length of the buffer in memory1.
• G_UTIL_SLEEP See GSleep(). Platform-independent sleep. A valid connection (g) is not necessary, i.e. g may be null.
  • memory1 is input and must be a pointer to an unsigned int, units are milliseconds.
  • memory2 is ignored, use null.
• G_UTIL_ADDRESSES Provides a \n delimited listing of all available IP addresses, PCI addresses, and COM ports. A valid connection (g) is not necessary, i.e. g may be null. The suffix -d will be appended to each address to indicate these addresses are available via direct connection. See G_UTIL_GCAPS_ADDRESSES for addresses through gcaps.
  • memory1 is output and must be a GCStringOut. Data will be null terminated, even if the data must be truncated to do so.
  • memory2 is input and must be a pointer to a GSize holding the length of the buffer in memory1.
• G_UTIL_IPREQUEST Listens and returns a \n delimited listing of Galil MAC addresses sending BOOT-P or DHCP requests. The function will listen, and block, for roughly 5 seconds. A valid connection (g) is not necessary, i.e. g may be null.
  • memory1 is output and must be a GCStringOut. Data will be null terminated, even if the data must be truncated to do so.
  • memory2 is input and must be a pointer to a GSize holding the length of the buffer in memory1.
• G_UTIL_ASSIGN Provides a method to assign an IP address given a Galil MAC address. A valid connection (g) is not necessary, i.e. g may be null. The address to assign will be pinged to ensure its availability before the assign packet is sent. G_GCLIB_UTILITY_IP_TAKEN will be returned by GUtility() if the ping returns a response.
  • memory1 is input and must be a pointer to a GCStringIn containing the address that is to be assigned. e.g. "192.168.0.43".
  • memory2 is input and must be a pointer to a GCStringIn containing the controller's MAC address. e.g. "00:50:4C:20:01:23".
• G_UTIL_DEVICE_INITIALIZE Provides a method to reinitialize a connection after a reset, e.g. an RS command. Depending on the device type, the appropriate commands will be sent to configure the communication bus for optimal performance.
  • memory1 is ignored, use null.
  • memory2 is ignored, use null.
• G_UTIL_GCAPS_VERSION Returns the gcaps server version. A valid connection (g) is not necessary, i.e. g may be null. This operation will connect to the server to determine the version.
  • memory1 is output and must be a GCStringOut. Data will be null terminated, even if the data must be truncated to do so.
  • memory2 is input and must be a pointer to a GSize holding the length of the buffer in memory1.
• G_UTIL_GCAPS_KEEPALIVE Provides a method for kicking the gcaps server. After a default period of 10 minutes of inactivity, gcaps will disconnect the gclib client. To prevent a disconnect, communicate with the hardware or call G_UTIL_GCAPS_KEEPALIVE within the timeout period to reset the timer. The current interval can be optionally read and overwritten.
  • memory1 is output. If nonnull, value must be a pointer to a GSIZE which will be filled with the current gcaps timeout, in ms.
  • memory2 is input. If nonnull, value must be a pointer to a GSIZE which overrides the current gcaps timeout, in ms, for this connection.
• G_UTIL_GCAPS_ADDRESSES Provides a \n delimited listing of all available IP addresses, PCI addresses, and COM ports as available from the gcaps server. A valid connection (g) is not necessary, i.e. g may be null.
  • memory1 is output and must be a GCStringOut. Data will be null terminated, even if the data must be truncated to do so.
  • memory2 is input and must be a pointer to a GSize holding the length of the buffer in memory1.
• G_UTIL_GCAPS_IPREQUEST Connects to gcaps and returns a \n delimited listing of Galil MAC addresses sending BOOT-P or DHCP requests. The function will block for roughly 5 seconds. A valid connection (g) is not necessary, i.e. g may be null.
  • memory1 is output and must be a GCStringOut. Data will be null terminated, even if the data must be truncated to do so.
  • memory2 is input and must be a pointer to a GSize holding the length of the buffer in memory1.
• G_UTIL_GCAPS_ASSIGN Provides a method to assign an IP address through gcaps given a Galil MAC address. A valid connection (g) is not necessary, i.e. g may be null.
  • memory1 is input and must be a pointer to a GCStringIn containing the address that is to be assigned. e.g. "192.168.0.43".
  • memory2 is input and must be a pointer to a GCStringIn containing the controller's MAC address. e.g. "00:50:4C:20:01:23".

Parameters

memory1	An untyped pointer to data type required for request.
memory2	An untyped pointer to data type required for request.

Returns

The success status or error code of the function. See gclib_errors.h for possible values.

See the following functions from gclibo, the open source portion, for examples:

• GAddresses()
• GAssign()
• GInfo()
• GIpRequests()
• GSleep()
• GTimeout()
• GVersion()

Referenced by GAddresses(), GAssign(), GInfo(), GIpRequests(), GSleep(), GTimeout(), and GVersion().