DAQV Procedures

DAQV_PULL_ENABLE() and DAQV_PULL_DISABLE() , are used to activate regions of the code during which DAQV should operate. Minimally, a single call to DAQV_PULL_ENABLE() is required to activate DAQV (i.e., wait for a connection from the control client). Use of the disable routine is optional and is provided as a convenience to the programmer. In a long-running code, for example, a programmer may only want to examine array values over the life of a specific loop. By placing the enable/disable calls around that loop, the overhead associated with using DAQV will be greatly diminished in the other parts of the code. DAQV can be activated and deactivated arbitrarily during the program. The call to DAQV_PULL_ENABLE() is on line 23. When the compiled program is executed on the command line, the code runs normally until the the DAQV_PULL_ENABLE() routine is encountered, at which point DAQV is activated and requires an external control client to connect. At the start of this tutorial, line 25 is highlighted, this indicates that the program is stopped here after the connection is made between the client and server.

Continue

Return to previous page