mvncCloseDevice()

Type	Function
Header	mvnc.h
Library	libmvnc.so
Return	mvncStatus
Version	1.0
See also	mvncOpenDevice, mvncGetDeviceOption, mvncSetDeviceOption

Overview

This function is used to cease communication and reset the device.

Prototype

mvncStatus mvncCloseDevice(void *deviceHandle);

Parameters

Name	Type	Description
deviceHandle	void*	Pointer to the opaque NCS device structure that was allocated and returned from the mvncOpenDevice function.

Return

This function returns an appropriate value from the mvncStatus enumeration.

Known Issues

Example

#include <stdio.h>
#include <stdlib.h>

extern "C" 
{
#include <mvnc.h>
}
// Somewhat arbitrary buffer size for the device name.
#define NAME_SIZE 100
int main(int argc, char** argv)
{
    mvncStatus retCode;
    void *deviceHandle;
    char devName[NAME_SIZE];
    retCode = mvncGetDeviceName(0, devName, NAME_SIZE);
    if (retCode != MVNC_OK)
    {   // failed to get device name, maybe none plugged in.
        printf("No NCS devices found\n");
        exit(-1);
    }
    
    // Try to open the NCS device via the device name.
    retCode = mvncOpenDevice(devName, &deviceHandle);
    if (retCode != MVNC_OK)
    {   // Failed to open the device.  
        printf("Could not open NCS device\n");
        exit(-1);
    }
    
    // deviceHandle is ready to use now.  
    // Pass it to other NC API calls as needed and close it when finished.
    printf("Successfully opened NCS device!\n");
    
    // Close the device previously opened by mvncOpenDevice().
    retCode = mvncCloseDevice(deviceHandle);
}