dominic

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+++ title = 'DMRHost on a Raspberry Pi 4 with FreeBSD' summary = '''multiline commentary olay''' date = '2023-08-26T21:01:16+02:00' #lastmod = '' categories = [ 'amateur-radio' ] tags = []

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+++

Setup FreeBSD

I'm using 14.0-CURRENT for this.

https://download.freebsd.org/ftp/snapshots/arm64/aarch64/ISO-IMAGES/14.0/

$ doas dd if=FreeBSD-14.0-ALPHA3-arm64-aarch64-RPI-20230825-2af9390e54ed-265022.img of=/dev/rsd2c bs=1m

Boot into the system with the serial console. Setup a dedicated user for this and disable the serial console after you successfully set up the network (don't forget to also test ssh connection).

$ doas pw useradd mmdvm -d /home/mmdvm -m -L daemon -G dialer

Do not use the UART for kernel messages. Add this line to your /boot/loader.conf file.

hw.fdt.console="NO"

Reboot so the serial console can be used for the MMDVM_HS hat.

Install DMRHost

You will need a few packages before we can continue. This list could be incomplete because I try to remember them from brain memory...

$ doas pkg install git gcc cmake

Goto /home/mmdvm, build and install DMRHost.

$ doas -u mmdvm mkdir ~/git && cd /home/mmdvm/git
$ doas -u mmdvm git clone https://github.com/BrandMeister/DMRHost.git
$ cd DMRHost && doas -u mmdvm mkdir build && cd build
$ doas -u mmdvm (cmake -DCMAKE_BUILD_TYPE=Release .. && make)
$ doas make install

Create directories and the MMDVM.ini file.

$ cd /home/mmdvm && doas -u mmdvm mkdir logs && chmod 0775 logs
$ doas -u mmdvm nvim MMDVM.ini

[...]

[Log]
# Logging levels, 0=No logging, 1=Debug, 2=Message, 3=Info, 4=Warning, 5=Error, 6=Fatal
SyslogLevel=0
DisplayLevel=0
FileLevel=2
FilePath=/home/mmdvm/logs
FileRoot=DMRHost
FileRotate=0

[...]

[Modem]
Port=/dev/cua00
Protocol=uart

[...]

I also add my user to the mmdvm group, so I can edit the MMDVM file. (Well, set file permissions to 0664)

$ doas pw usermod <user> -G mmdvm

Test DMRHost

$ doas -u mmdvm /usr/local/bin/DMRHost /home/mmdvm/MMDVM.ini

You may inspect the logfile beforehand: tail -f /home/mmdvm/logs/DMRHost.log. The startup of DMRHost should end with something like these lines:

M: 2023-08-25 11:03:05.000 DMRHost-20220617-DMRHost is running
M: 2023-08-25 11:03:15.000 DMR, Logged into the master successfully

Setup an rc file

#!/bin/sh
# rc-script for DMRHost on OpenBSD 7.3
# runs on FreeBSD for now
# Dominic Reich <https://oe7drt.com>

DMRHOST="/usr/local/bin/DMRHost"
MMDVM_INI="/home/mmdvm/MMDVM.ini"
DMRHOST_PID="/home/mmdvm/DMRHost.pid"
DOAS="/usr/local/bin/doas -u mmdvm"
LOGDIR="/home/mmdvm/logs"

case "$1" in
  "start")
    if [ ! -d ${LOGDIR} ] ; then
      mkdir ${LOGDIR}
      chown mmdvm:users ${LOGDIR}
      chmod 0775 ${LOGDIR}
    fi
    if ${DOAS} [ ! -r ${MMDVM_INI} ] ; then
      echo "${MMDVM_INI} is not readable... aborting!"
      exit 1
    fi
    echo -n "Starting DMRHost..."
    ${DOAS} ${DMRHOST} ${MMDVM_INI} &
    echo $! | ${DOAS} tee ${DMRHOST_PID} > /dev/null
    echo " done"
  ;;

  "stop")
    echo -n "Stopping DMRHost..."
    if [ -f ${DMRHOST_PID} ] ; then
      kill `cat ${DMRHOST_PID}`
      rm -f ${DMRHOST_PID}
      echo " done"
    else
      echo "not running?"
    fi
  ;;

  "restart")
    $0 stop
    sleep 2
    $0 start
  ;;

  *)
    echo "$0 [start|stop|restart]"
  ;;

esac

3.5 KiB Raw Blame History