Start task

Functions
int32_t	VkDaqStartTask (const char *task)
	Start task.

Detailed Description

Function Documentation

VkDaqStartTask()

int32_t VkDaqStartTask

(

const char *

task

)

Start task.

Note

Support start multiple acquisition cards simultaneously

Note:

Simultaneously enabling multiple cards, when creating tasks, it is necessary to create channels for each device one by one

It is not supported to set AIN channels for multiple devices first, and then set MIN and DIN channels for multiple devices

For example:

支持的：

VkDaqCreateAIVoltageChan(taskHandle, "dev1/AIN1", "", VkDaq_Val_SingleEnded, -10.0, 10.0, VkDaq_Val_Volts, "");

VkDaqCfgDigEdgeRefTrig(taskHandle, "dev1/DIN1.1", VkDaq_Val_Rising, 0);

VkDaqCreateAIVoltageChan(taskHandle, "dev2/AIN1", "", VkDaq_Val_SingleEnded, -10.0, 10.0, VkDaq_Val_Volts, "");

VkDaqCfgDigEdgeRefTrig(taskHandle, "dev2/DIN1.1", VkDaq_Val_Rising, 0);

Unsupported:

VkDaqCreateAIVoltageChan(taskHandle, "dev1/AIN1", "", VkDaq_Val_SingleEnded, -10.0, 10.0, VkDaq_Val_Volts, "");

VkDaqCreateAIVoltageChan(taskHandle, "dev2/AIN1", "", VkDaq_Val_SingleEnded, -10.0, 10.0, VkDaq_Val_Volts, "");

VkDaqCfgDigEdgeRefTrig(taskHandle, "dev1/DIN1.1", VkDaq_Val_Rising, 0);

VkDaqCfgDigEdgeRefTrig(taskHandle, "dev2/DIN1.1", VkDaq_Val_Rising, 0);

data type	parameter	describe
const char*	task	Task name(string type, for example"Task1")

Returns

On success, return value >= 0.

On failure, returns a negative error number.For detail, please Call VkDaqGetLastErrorInfo

C language reference

#include <stdio.h>
#include "libvkdaq.h"
 
int main(int argc, char* argv[])
{
    const char* task = "task1";
 
    int32_t result = VkDaqCreateTask(task); 
 
    result = VkDaqCreateAIVoltageChan(task, "dev1/AIN1", "", VkDaq_Val_SingleEnded, -10.0, 10.0, VkDaq_Val_Volts, ""); 
    
    result = VkDaqCfgSampClkTiming(task, VkDaq_Val_ClkSrc_OnBoardClk, 10000, VkDaq_Val_Rising, VkDaq_Val_FiniteSamps, 1000); 
 
    result = VkDaqStartTask(task);
 
    if (result >= 0) {
        printf("Successful\n");
    }
    else {
        printf("Failed\n");
    }
 
    return 0;
}