A serial port visible as /dev/ttyAMA0 is available on the RJ45 connector described below.
The physical interface used is a Max Linear SP335 IC
that can be configured alternatively via dip-switch as:
RS232 port at ±12 volt
RS485 half duplex
RS422 full duplex
Please take care and don't plug here the Ethernet cable to avoid board damages.
Some GPIO lines are available for user purpose on two 8x2 pin headers pitch 2.54mm
On these pins are also available the power supply lines at 5VDC and 3.3VDC. The signals level
of any logic line is 3.3 volt. Don't plug boards with 5 volt line voltage to avoid damage to the
Raspberry Pi CM3 module.
Seedstudio Grove, Sparkfun QWIIC and Acme Systems A-BUS connectors
Up to three serial connection systems can be used with the CM3-Panel-7-POE. This feature
enable the use of a wide ecosystem of small modules
Acme Systems srl provided this documentation "as is" without warranty or guarantees of any kind.
We not provide any direct support for the Open Source software which can running on our board but, through
these pages and forum posts, we provide all of the information required to obtain the sources, install, use and update the
Open Source software available on Internet.
Please note that all of the software we talking about is Open Source so you have
to check any license provided by the software authors before using it in any commercial or non-commercial
product, by yourself.
Please contact us note that WE ARE MAINLY HARDWARE DESIGNERS and NOT LINUX GURUS and therefore could be better to post your questions to the
Acme Systems forum and ensure
that all of the site contributors and large software community can read and reply to