提交: ca2a4dc1a93a5f7f0b57ffed77786cda5bf3a4bc - QtSimpleDAQ_CO_PulseGen (git)

QtSDK と NI-DAQmxBase (Linux) を使った単純なサンプル

Commit MetaInfo

• 修订版: ca2a4dc1a93a5f7f0b57ffed77786cda5bf3a4bc (tree)
• 时间: 2012-08-22 15:28:00
• 作者: arakaki <alucky4416@user...>
• Commiter: arakaki

Log Message

DEL: genDigPulse.c

更改概述

• delete: genDigPulse.c

差异

--- a/genDigPulse.c
+++ /dev/null
@@ -1,102 +0,0 @@
-/*********************************************************************
-*
-* ANSI C Example program:
-*    genDigPulse.c
-*
-* Example Category:
-*    CO
-*
-* Description:
-*    This example demonstrates how to generate a single digital pulse
-*    from a Counter Output Channel. The Frequency, and Duty Cycle
-*    are all configurable.
-*
-* Instructions for Running:
-*    1. Select the Physical Channel which corresponds to the counter
-*       you want to output your signal to on the DAQ device.
-*    2. Enter the Frequency and Duty Cycle to define the pulse
-*       parameters. Additionally, you can set the Initial Delay
-*       (in seconds) which will delay the beginning of the pulse from
-*       the start call; this is currently set to 0.0 in the code.
-*    Note: Use the pulseWidth example to verify you are
-*          outputting the pulse on the DAQ device.
-*
-* Steps:
-*    1. Create a task.
-*    2. Create a Counter Output channel to produce a Pulse in terms
-*       of Frequency.
-*    3. Call the Start function to arm the counter and begin the
-*       pulse generation. The pulse would not begin until after the
-*       Initial Delay (in seconds) has expired.
-*    4. Use the IsTaskDone function to ensure the entire pulse
-*       is generated before ending the task.
-*    5. Call the Clear Task function to clear the Task.
-*    6. Display an error if any.
-*
-* I/O Connections Overview:
-*    The counter will output the pulse on the output terminal of the
-*    counter specified in the Physical Channel I/O control.
-*
-*    In this example the output will be sent to the default output
-*    terminal on ctr0.
-*
-*    For more information on the default counter input and output
-*    terminals for your device, open the NI-DAQmx Base Help, and refer
-*    to Counter Signal Connections found under the Device Considerations
-*    book in the table of contents.
-*
-* Recommended Use:
-*    Call Configure and Start functions.
-*    Call Stop function at the end.
-*
-*********************************************************************/
-
-#include "NIDAQmxBase.h"
-#include <stdio.h>
-#include <time.h>
-#include <unistd.h>
-
-#define DAQmxErrChk(functionCall) { if( DAQmxFailed(error=(functionCall)) ) { goto Error; } }
-
-int main(void)
-{
-    // Task parameters
-    int32       error = 0;
-    TaskHandle  taskHandle = 0;
-    char        errBuff[2048]={'\0'};
-    time_t      startTime;
-
-    // Channel parameters
-    char        chan[] = "Dev1/ctr0";
-    float64     freq = 1.0;
-    float64     duty = 0.5;
-    float64     delay = 0.0;
-
-    // Data write parameters
-    float64     timeout = 10.0;
-    bool32      done = 0;
-
-
-    DAQmxErrChk (DAQmxBaseCreateTask("",&taskHandle));
-    DAQmxErrChk (DAQmxBaseCreateCOPulseChanFreq(taskHandle,chan,"",DAQmx_Val_Hz,DAQmx_Val_Low,delay,freq,duty));
-    DAQmxErrChk (DAQmxBaseStartTask(taskHandle));
-
-    // The loop will quit after 10 seconds
-    startTime = time(NULL);
-    while( !done && time(NULL)<startTime+10 ) {
-        DAQmxErrChk (DAQmxBaseIsTaskDone(taskHandle,&done));
-        if( !done )
-            usleep(100000);
-    }
-
-Error:
-    if( DAQmxFailed(error) )
-        DAQmxBaseGetExtendedErrorInfo(errBuff,2048);
-    if( taskHandle!=0 ) {
-        DAQmxBaseStopTask(taskHandle);
-        DAQmxBaseClearTask(taskHandle);
-    }
-    if( DAQmxFailed(error) )
-		printf ("DAQmxBase Error %ld: %s\n", error, errBuff);
-    return 0;
-}