ADLINK Technology MCM-204, User Manual

Page: 50 / 55

42 DAQ Missions
Leading
EDGE COMPUTING
4.1.4 Passive Data
The conventional message exchange pattern of the MCM-204 for
Periodic Polling and Continuous Data modes is request-response,
with the MCM-204 serving as responder. After receiving a query
from the host, the MCM-204 responds with the requested data.
However, for some applications it’s desirable for the host server to
passively wait for data from the client. In such cases, a TCP
socket function can instruct the MCM-204 to automatically send
data to the host server whenever data is generated. See “TCP
Socket” on page 31.
4.2 Custom Filtering Algorithms
The MCM-204 offers flexible support options for custom filtering
algorithms. Users can easily import their own domain-knowledge
algorithms to the MCM-204. Custom filtering algorithms must be
written in C or C++ and compiled under Linux.
Use the following steps to create a custom filtering algorithm.
1. Download and extract the Linux toolchain:
https://releases.linaro.org/components/toolchain/
binaries/6.2-2016.11/arm-linux-gnueabihf/
gcc-linaro-6.2.1-2016.11-x86_64_arm-linux-gnueabihf.tar.xz
2. Download CustomizedAlgo.zip from the MCM-204 web
page and extract the CalStatistic (C++) and CalRMS (C)
sample program folders.
https://www.adlinktech.com/Products/IoT_solutions/
Smart_Factory/MCM-204
3. Place the extracted CalRMS and Linux toolchain folders
in the same file path.