Mercurial > hg > fxanalyse
diff fake-data-provider.c @ 88:9b7588cd4013
Move data acquisition into separate thread
The data acquisition thread transfers data to the main thread trough a Thread
Safe Queue. This separation allows for making the data acquisition system
pluggable. The old file based communication to the KK counter is implemented
along with a very simple fake data provider.
| author | Daniele Nicolodi <daniele.nicolodi@obspm.fr> |
|---|---|
| date | Thu, 21 Mar 2013 18:24:45 +0100 |
| parents | |
| children | 4102fe614df2 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/fake-data-provider.c Thu Mar 21 18:24:45 2013 +0100 @@ -0,0 +1,35 @@ +/* FXAnalise fake data provider */ + +#include <userint.h> +#include <utility.h> + +/* data acquisition flag */ +extern int acquiring; +/* data queue */ +extern CmtTSQHandle dataQueue; + +int CVICALLBACK FakeDataProvider (void *functionData) +{ + int mainThreadId; + double mark; + double data[5] = {0.0, 10000.0, 2.0, 3.0, 4.0}; + + /* get main thread id to post messages to it */ + mainThreadId = CmtGetMainThreadID(); + + while (acquiring) { + mark = Timer(); + + /* update data */ + GetCurrentDateTime(&data[0]); + data[1] = data[1] + 0.1; + + /* push data into the data queue */ + CmtWriteTSQData(dataQueue, data, 5, TSQ_INFINITE_TIMEOUT, 0); + + /* wait till next second */ + SyncWait(mark, 1.00); + } + + return 0; +}