💬 Building a Raspberry Pi Gateway

[Yveaux]

@ben999 said:

Wrong serial port ?

Likely ;-)
/dev/pts/x are pseudo-terminals , not serial ports.

On my (old) Pi running Raspbian the serial port is /dev/ttyAMA0
You could run something like

dmesg |grep -i tty

to get an idea of serial ports on your Pi.

[ben999]

@Yveaux thanks a lot for your answer. Understanding linux is a slow and painful process :laughing:

Here is the output from your command : dmesg |grep -i tty

pi@raspberrypi:~ $ dmesg |grep -i tty
[    0.000000] Kernel command line: 8250.nr_uarts=0 dma.dmachans=0x7f35 bcm2708_fb.fbwidth=656 bcm2708_fb.fbheight=416 bcm2709.boardrev=0xa02082 bcm2709.serial=0xcc3e67e3 smsc95xx.macaddr=B8:27:EB:3E:67:E3 bcm2708_fb.fbswap=1 bcm2709.uart_clock=48000000 vc_mem.mem_base=0x3dc00000 vc_mem.mem_size=0x3f000000  dwc_otg.lpm_enable=0 console=ttyS0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait
[    0.001337] console [tty1] enabled
[    1.772114] 3f201000.uart: ttyAMA0 at MMIO 0x3f201000 (irq = 87, base_baud = 0) is a PL011 rev2

What a mess...
ttyAMA0 is the one !!!
Thanks @Yveaux you got me on the right path !!! Goto next step! :smile:

[JahFyahh]

I just did a fresh install of pimatic and MsGateway on the pi. But pimatic does not seem to get de messages. i started the gateway via the daemon method, is there a way to see if the sensor is reaching the gateway?

[hausinger]

@b0rmann
Do you still using the rs485 usb "dongle" to connect the rs485 nodes to the rpi? Do you attached some more nodes to your rs485 rpi Gateway?
Is it stable?
How do you do the configuration for it?

[marceloaqno]

@JahFyahh To view messages being exchanged with the sensors, run the gateway in debug mode:

mysGateway -d

[JahFyahh]

@marceloaqno thank you for the reply, I tried that and I receive "mysGateway: acce[t: Bad file descriptor" Any idea what this means?

[marceloaqno]

@JahFyahh Could you provide the full debug log?

[manul]

Hi team,

First of all, thanks for this amazing project and this doc.
I'm trying to use arduino nanos with Raspberry Pi 2 as a gateway: I can get it working when I configure the Raspberry Pi using serial gateway, however, it does not work using MQTT with latest version from git.
The error message is:
"mysGateway: accept: Bad file descriptor"

I followed all explanations given on this page.
Any idea?
Thanks again

[marceloaqno]

@manul Which MQTT broker are you using? Did you try to update it?

[hausinger]

I wanted to use the mysGateway with a USB/RS485 converter.

Here is my config: ./configure --my-gateway=ethernet --my-port=5003 --my-transport=rs485 --my-rs485-serial-port=/dev/ttyUSB0 my-rs485-baudrate=57600

make does it's job, but after i start the gateway it says:
mysGateway: Starting gateway....
mysGateway: Protocol version - 2.0.1-beta
mysGateway: MCO:BGN:INIT GW,CP=RSNG---,VER=2.0.1-beta
mysGateway: TSM:INIT
mysGateway: TSM:INIT:TSP OK
mysGateway: TSM:INIT: GW Mode
mysGateway: TSM:READY

after that it stopped to work.

Whats wrong in my configuration?

[marceloaqno]

@hausinger Have you checked if /dev/ttyUSB0 is receiving any data?

[marceloaqno]

The RPi port has just received a new update that changes some important things related to the location and name of the gateway binary and services:

mysGateway was renamed to mysgw
mysgateway service was renamed to mysgw

Now, after successfully running the make command, you will find the gateway file under ./bin/mygw

Also, before installing the new version you need to manually remove the old one:

If you are using systemd

sudo systemctl disable mysgateway.service
sudo rm /etc/systemd/system/mysgateway.service
sudo rm /usr/local/bin/mysGateway

If you are using sysvinit

sudo update-rc.d -f mysgateway remove
sudo rm /etc/init.d/mysgateway
sudo rm /usr/local/bin/mysGateway

[hausinger]

@marceloaqno said:

@hausinger Have you checked if /dev/ttyUSB0 is receiving any data?

Thank you for your answer. I don't know, how to check that? The wiring to my nodes is correct, the serial port is correct (dmesg says that).
Could you confirm, that my configuration from my last post is correct?

[marceloaqno]

@hausinger Your configuration is correct. To check the serial, install the screen package (if you haven't already done so) and run:

screen /dev/ttyUSB0 57600

You should see some strange characters being printed.

I did a quick test here with your setup and found out that there is a bug with the gateway when the rs485 baud rate is set to 57600. With 9600 it works fine. I'll try to fix this.

[marceloaqno]

@hausinger You forgot "--" for my-rs485-baudrate=57600 in your configuration.
It should be:

./configure --my-gateway=ethernet --my-port=5003 --my-transport=rs485 --my-rs485-serial-port=/dev/ttyUSB0 --my-rs485-baudrate=57600

[hausinger]

@marceloaqno said:

@hausinger You forgot "--" for my-rs485-baudrate=57600 in your configuration.
It should be:

./configure --my-gateway=ethernet --my-port=5003 --my-transport=rs485 --my-rs485-serial-port=/dev/ttyUSB0 --my-rs485-baudrate=57600

Hi @marceloaqno
Thank you for your answers. Yes, i saw this, but I did the "--", i forgot it in the last post, because I can't use copy & paste on my raspberry (remote Desktop).

Did this configuration work on your System?
Are you sure, that my configuration is ok? (with the "--")
Whats the normal behavior when i start the mysGateway with debug (mysGateway -d)? If i type the starting command in the terminal, the Gateway gives me the Messages (from my last post) and thats it (not more). I can now type a new command

I'm now not at home (Business trip), if I get home, i will try your "Screen" command

[jmmorgan83]

I followed the instruction above to make a mysgw file, but no file was generated.

[mfalkvidd]

@jmmorgan83 do you think there is any information you can share might help us help you?

[jmmorgan83]

I reset everything and ran it again. It did generate the file this time. Thanks, - Now to test it.

[jmmorgan83]

Has anyone gotten the raspberry pi gateway to work with Openhab on the same raspberry pi? I have both the virtual and mqtt gateways working, but I can get either one to communicate with Openhab.