数字输入触发配置

函数
int32_t	VkDaqCfgDigEdgeRefTrig (const char *task, const char *triggerSource, int32_t triggerEdge, uint32_t reserved)
	数字输入触发配置

详细描述

函数说明

VkDaqCfgDigEdgeRefTrig()

int32_t VkDaqCfgDigEdgeRefTrig	(	const char *	task,
		const char *	triggerSource,
		int32_t	triggerEdge,
		uint32_t	reserved
	)

数字输入触发配置

注解

可以使用以下代码读取设备的所有触发源列表.

#include <stdio.h>
#include "libvkdaq.h"
 
int main(int argc, char* argv[])
{
 
   const char* dev = "dev1";
   const char* attrName = "TriggerSourceAvailable";
   char attrValue[4096] = { 0 };
   int32_t size = sizeof(attrValue); 
 
   int32_t result = VkDaqGetDeviceAttribute(dev, attrName, attrValue, size); 
 
   printf("TriggerSourceAvailable = %s \n", attrValue); 
 
   if (result >= 0) {
       printf("Successful\n");
   }
   else {
       printf("Failed\n");
   }
 
   return 0;
}

数据类型	参数	说明
const char*	task	任务名.
int32_t	triggerSource	数字输入触发信号源, 如: "dev1/DIN1.1", "dev1/DIN1.2", "dev1/DIN1.3", "dev1/DIN1.4"等.
int32_t	triggerEdge	触发边沿. 0: 下降沿. 1: 上升沿. 2：低电平. 3：高电平.
uint32_t	reserved	保留.

返回

成功时, 返回值 >= 0

失败时, 返回为负值的错误编号.获取详细信息,请调用 VkDaqGetLastErrorInfo

C语言参考

#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 = VkDaqCfgDigEdgeRefTrig(task, "dev1/DIN1.1", VkDaq_Val_Rising, 0);  
 
    if (result >= 0) {
        printf("Successful\n");
    }
    else {
        printf("Failed\n");
    }
 
    return 0;
}