M2kcli multiple channels from CSV

Hello,

To answer the question: yes, it is possible to get an output for any channel using samples from a csv file.

For this it is important to understand how the CSV and channel settings work:

• Each sample in the CSV represents a 16-bit value in decimal format, where each bit corresponds to one of the 16 digital channels (bit 0 = channel 0, bit 1 = channel 1, ...).
• To activate channel 1 during a sample period, you need to set the bit index 1 to the value of "1" for that sample. For example:
  • A sample value of 2 (binary: 00000010) will set only the channel 1 to high for that sample period
  • A sample value of 3 (binary: 00000011) will set both channel 0 and 1 to high for that sample period
• The channel argument in from the m2kcli command is used to enable specific channels for output. If a channel is not enabled, it's data won't be output even if present in the CSV samples.

To better understand how it works, I suggest creating a samples.csv file with this content:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

Then run the following command:

m2kcli digital ip:192.168.2.1 -9 channel=0,1,2,3 cyclic=1 buffer_size=16 < samples.csv

As an experiment you can change the channel list; for example channel=1,2,3 and see how this affects your output.

Best regards,

Bogdan