Library containing device support for Monarco HAT hardware developped by the guys from Monarco.io.
I decided to write this library because the hardware is very solid, but a CODESYS implementation was missing.
Writing this library was fun, but took a lot of sweat and time, please refer to this work when you use it =).
I am not affiliated with Monarco.io in any way, shape or form.
Released under Unlicense.
Enjoy!
GETTING STARTED
To use the HAT, RS-485 and the Realtime Clock under CODESYS, please follow these steps.
RTC requires no Linux side config apart from the overlay;
1) On your Raspberry Pi, switch to root user: sudo -s
2) Disable Linux console on UART: sed 's/ console=serial0,[0-9]\+//' -i /boot/cmdline.txt
3) Run the following command to get device-tree overlay definition for the RS-485 on the Monarco HAT: wget www.monarco.io/download/monarco-fix-4-9.dtbo
4) Copy it to /boot/overlays: sudo cp monarco-fix-4-9.dtbo /boot/overlays
5) Afterwards add dtoverlay=monarco-fix-4-9 line to the /boot/config.txt file: echo dtoverlay=monarco-fix-4-9 >> /boot/config.txt
6) Reboot your Raspberry Pi: reboot
7) After reboot, check the output of the following command: ls -l /dev/serial0
8) The response should read "/dev/serial0 -> ttyAMA0"
9) Again, switch to root user: sudo -s cd etc/
10) Then: nano CODESYSControl.cfg
11) Add the following lines: [SysCom] Linux.Devicefile=/dev/ttyAMA
12) Then reboot your Raspberry Pi again: reboot
13) After reboot: Now you can use the HAT, RS-485 and the Real-Time Clock rom within an CODESYS IEC application via a comlib of you own flavour (like CAA SerialCOM library).