DeviceReadList

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`DeviceReadList`

Unsupported in Public Cloud

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DeviceReadList[device,n]

reads from the specified device n times, returning a list of the results.

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DeviceReadList[device,n,param]

reads the parameter param.

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DeviceReadList[device,n,{param₁,param₂,…}]

reads the list of parameters param_i.

Details

DeviceReadList effectively performs n sequential reads on the device, as quickly as possible.
DeviceReadList[device,n] reads the default parameter from the device.
DeviceReadList is a blocking function; when called, it communicates with the device and does not return until it has the data it needs.
A device can be specified either by a DeviceObject or by a string representing a device class.

Examples

open allclose all

Basic Examples (1)Summary of the most common use cases

Open the demo device:

In[1]:=1

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https://wolfram.com/xid/0ywcjxzw448a-debd48

Out[1]=1

Sequentially read the specified number of items from a demo device:

In[2]:=2

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https://wolfram.com/xid/0ywcjxzw448a-f6un7k

Out[2]=2

Repeatedly read a specified parameter:

In[3]:=3

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https://wolfram.com/xid/0ywcjxzw448a-bd4d6r

Out[3]=3

Or multiple parameters:

In[4]:=4

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https://wolfram.com/xid/0ywcjxzw448a-cadvjg

Out[4]=4

Applications (1)Sample problems that can be solved with this function

Open the default camera attached to your system:

In[1]:=1

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https://wolfram.com/xid/0ywcjxzw448a-0h8esq

Out[1]:=1

Set an appropriate frame rate and capture a sequence of four frames:

In[2]:=2

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https://wolfram.com/xid/0ywcjxzw448a-i35sd9

In[3]:=3

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https://wolfram.com/xid/0ywcjxzw448a-0blwsr

Out[3]:=3

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