Implemented Triggermode Auto properly

oliverhaag
1 parent d0656b15
Showing 2 changed files with 23 additions and 12 deletions
openhantek/ChangeLog
openhantek/src/hantek/control.cpp
@@ -102,3 +102,6 @@
 * Added spectrums to exported csv files
 * Using autocorrelation for frequency detection now
 * Some undefined value bugfixes
+
+2010-12-13  Oliver Haag  <oliver.haag@gmail.com>
+* Triggermode Auto working correctly now
@@ -115,7 +115,7 @@ namespace Hantek {
 	/// \brief Handles all USB things until the device gets disconnected.
 	void Control::run() {
-		int errorCode;
+		int errorCode, waitCounter = 0;
 		// The control loop is running until the device is disconnected
 		int captureState = CAPTURE_WAITING;
@@ -208,8 +208,24 @@ namespace Hantek {
 						break;
 				case CAPTURE_WAITING:
-					if(samplingStarted && lastTriggerMode == this->triggerMode)
-						break;
+					if(samplingStarted && lastTriggerMode == this->triggerMode) {
+						waitCounter++;
+						
+						if(this->triggerMode == Dso::TRIGGERMODE_AUTO) {
+							if(waitCounter > (double) this->samplerateDivider / this->samplerateMax * this->bufferSize * 20 + 2) {
+								// Force triggering
+								errorCode = this->device->bulkCommand(this->command[COMMAND_FORCETRIGGER]);
+								if(errorCode == LIBUSB_ERROR_NO_DEVICE)
+									captureState = LIBUSB_ERROR_NO_DEVICE;
+		#ifdef DEBUG
+							qDebug("Forcing trigger");
+		#endif
+							}
+						}
+						
+						if(waitCounter < 80)
+							break;
+					}
 					// Start capturing
 					errorCode = this->device->bulkCommand(this->command[COMMAND_STARTSAMPLING]);
@@ -233,16 +249,8 @@ namespace Hantek {
 					qDebug("Enabling trigger");
 #endif
-					if(this->triggerMode == Dso::TRIGGERMODE_AUTO) {
-						// Force triggering
-						errorCode = this->device->bulkCommand(this->command[COMMAND_FORCETRIGGER]);
-						if(errorCode == LIBUSB_ERROR_NO_DEVICE)
-							captureState = LIBUSB_ERROR_NO_DEVICE;
-#ifdef DEBUG
-					qDebug("Forcing trigger");
-#endif
-					}
 					samplingStarted = true;
+					waitCounter = 0;
 					lastTriggerMode = this->triggerMode;
 					break;