Initial load of driver

r1083 | dcl | 2006-08-25 14:46:51 +1000 (Fri, 25 Aug 2006) | 2 lines
2006-08-25 14:46:51 +10:00
parent 650db574c5
commit 8b3816b612
15 changed files with 2928 additions and 0 deletions
--- a/site_ansto/hardsup/Monitor/hctr.c
+++ b/site_ansto/hardsup/Monitor/hctr.c
@@ -0,0 +1,105 @@
+#include "hctr.h"
+#include <stdlib.h>
+#include <string.h>
+#include <NIDAQmx.h>
+
+#define DAQmxErrChk(functionCall) \
+  if( DAQmxFailed(error=(functionCall)) ) \
+    goto Error; \
+  else
+
+/**
+ * This structure encapsulates the data that is private to
+ * the implementation of the NI DAQ counter interface
+ */
+typedef struct counter_private_t
+{
+  /** NIDAQ opaque task handle */
+  TaskHandle  taskHandle;
+  /** Actual physical counter value, as returned by NIDAQ
+   * read function */
+  uInt32      count32;
+  /** extended 64-bit counter value */
+  unsigned long long count64;
+} COUNTER_PRIVATE;
+
+int hctr_ctor(const char* device_name, pHCTR* ptr)
+{
+  int error = 0;
+  *ptr = (COUNTER_PRIVATE*) malloc(sizeof(COUNTER_PRIVATE));
+  memset(*ptr, 0, sizeof(COUNTER_PRIVATE));
+
+  /*********************************************/
+  // Create a DAQmx task to hold the counter
+  /*********************************************/
+  DAQmxErrChk (DAQmxCreateTask("",&(*ptr)->taskHandle));
+
+  /*********************************************/
+  // Create a DAQmx counter within the task
+  /*********************************************/
+  DAQmxErrChk (
+      DAQmxCreateCICountEdgesChan((*ptr)->taskHandle,
+        device_name,
+        "",
+        DAQmx_Val_Rising,
+        (*ptr)->count32,
+        DAQmx_Val_CountUp));
+
+  /*********************************************/
+  // Start the DAQmx task
+  /*********************************************/
+  DAQmxErrChk (DAQmxStartTask((*ptr)->taskHandle));
+
+  return 0;
+Error:
+  free(*ptr);
+  *ptr = NULL;
+  return error;
+}
+
+int hctr_read(pHCTR hctr, unsigned long long* value)
+{
+  int error = 0;
+  uInt32 ctr;
+  DAQmxErrChk (DAQmxReadCounterScalarU32(hctr->taskHandle,
+        1.0,
+        &ctr,
+        NULL));
+  hctr->count64 += ctr - hctr->count32;
+  hctr->count32 = ctr;
+  *value = hctr->count64;
+  return 0;
+Error:
+  return error;
+}
+
+int hctr_dtor(pHCTR* hctr)
+{
+  if( hctr && *hctr && (*hctr)->taskHandle!=0 )
+  {
+    /*********************************************/
+    // DAQmx Stop Code
+    /*********************************************/
+    DAQmxStopTask((*hctr)->taskHandle);
+    DAQmxClearTask((*hctr)->taskHandle);
+  }
+  (*hctr)->taskHandle = 0;
+  free (*hctr);
+  *hctr = NULL;
+  return 0;
+}
+
+bool hctr_failed(int error)
+{
+  if (DAQmxFailed(error))
+    return true;
+  else
+    return false;
+}
+
+void hctr_errmsg(char* buff, int len)
+{
+  *buff = '\0';
+  DAQmxGetExtendedErrorInfo(buff, len);
+}
+