连续采集加速度数据

注解

步骤：
1.创建任务 VkDaqCreateTask
2.创建加速度通道 VkDaqCreateAIAccelChan
3.设置采样时钟 VkDaqCfgSampClkTiming
4.开始任务 VkDaqStartTask
5.获得任务数据 VkDaqGetTaskData
6.停止任务 VkDaqStopTask
7.清理任务 VkDaqClearTask

连续采集加速度数据流程图示例

C语言参考

#include <stdio.h>
#include "libvkdaq.h"
 
#define VkDaqErrChk(functionCall)       if( VkDaqFailed(error=(functionCall)) ) goto Error; else
 
int main(void)
{
    TaskHandle      taskHandle = "VkDaqTaskHandle";
    float64         data[1000];
    int64           total = 0;
    int32           error = 0;
    int32           read = 0;
 
    // VkDaq Configure Code
    VkDaqErrChk(VkDaqCreateTask(taskHandle));
    VkDaqErrChk(VkDaqCreateAIAccelChan(taskHandle, "dev1/AIN1", "", VkDaq_Val_SingleEnded, 0, 100, VkDaq_Val_AccelUnit_g, 0.05, DAQmx_Val_SignalType_IEPE, ""));
    VkDaqErrChk(VkDaqCfgSampClkTiming(taskHandle, VkDaq_Val_ClkSrc_OnBoardClk, 10000, VkDaq_Val_Rising, VkDaq_Val_ContSamps, 0));
 
    // VkDaq Start Code
    VkDaqErrChk(VkDaqStartTask(taskHandle));
 
    printf("Acquiring samples continuously.\n");
    while (true) {
        // VkDaq Read Code
        read = VkDaqGetTaskData(taskHandle, data, 1000, VkDaq_Val_GroupByScanNumber, 1);
        if (read > 0) {
            printf("Acquired %d samples. Total %lld\r", read, total += read);
            fflush(stdout);
        }
    }
 
Error:
    if (VkDaqFailed(error))
        printf("VkDaq Error: %s\n", VkDaqGetLastErrorInfo());
    if (taskHandle != 0) {
        // VkDaq Stop Code
        VkDaqStopTask(taskHandle);
        VkDaqClearTask(taskHandle);
    }
    printf("End of program, press Enter key to quit\n");
    getchar();
    return 0;
}