jadonk

jadonk

drwxrwxr-x 0/0               0 2026-01-29 05:17 ./
drwxrwxr-x 0/0               0 2026-01-29 03:26 ./lib/
lrwxrwxrwx 0/0               0 2026-01-29 03:26 ./lib/ld-musl-aarch64.so.1 -> /usr/lib/libc.so
drwxrwxr-x 0/0               0 2026-01-29 05:17 ./root/
-rw------- 0/0               6 2026-01-29 05:17 ./root/.ash_history
drwxrwxr-x 0/0               0 2026-01-29 02:46 ./var/
drwxrwxr-x 0/0               0 2026-01-29 03:27 ./var/lib/
-rw-r--r-- 0/0            2125 2026-01-29 05:17 ./var/lib/sysroot-build-state.json
drwxrwxr-x 0/0               0 2026-01-29 05:17 ./var/lib/sysroot-build-reports/

jadonk

Oct 24 13:26:59 6b75337 pppd[149780]: Plugin /usr/lib/pppd/2.4.9/nm-pppd-plugin.so loaded.
Oct 24 13:26:59 6b75337 NetworkManager[149780]: Plugin /usr/lib/pppd/2.4.9/nm-pppd-plugin.so loaded.
Oct 24 13:26:59 6b75337 pppd[149780]: nm-ppp-plugin: initializing
Oct 24 13:26:59 6b75337 pppd[149780]: pppd 2.4.9 started by root, uid 0
Oct 24 13:26:59 6b75337 pppd[149780]: nm-ppp-plugin: status 2 / phase 'serial connection'
Oct 24 13:26:59 6b75337 pppd[149780]: Removed stale lock on ttyS0 (pid 12494)
Oct 24 13:26:59 6b75337 pppd[149780]: Using interface ppp0
Oct 24 13:26:59 6b75337 pppd[149780]: nm-ppp-plugin: status 4 / phase 'establish'
Oct 24 13:26:59 6b75337 pppd[149780]: Connect: ppp0 <--> /dev/ttyS0
Oct 24 13:27:00 6b75337 pppd[149780]: nm-ppp-plugin: status 5 / phase 'authenticate'

jadonk

OSC circuits

BeaglePlay

BeaglePlay has 7.5pF capacitors on the HFOSC.

BeagleConnect Freedom

jadonk

ChatGPT came up with this to make the change persist.

# 1) Create a minimal plugin dir with just "generic"
mkdir -p /mnt/state/root-overlay/usr/lib/ModemManager/generic-only
cp /usr/lib/ModemManager/libmm-plugin-generic.so \
   /mnt/state/root-overlay/usr/lib/ModemManager/generic-only/

# 2) Add a systemd drop-in to change ExecStart
mkdir -p /mnt/state/root-overlay/etc/systemd/system/ModemManager.service.d

jadonk

cat <EOF >~/.magic
216	belong	0x7bb972b9	application/octet-stream
EOF
export MAGIC="$HOME/.magic"
west flash -d build/bcf/ot_coap_server

jadonk

git clone https://github.com/zephyrproject-rtos/zephyr
cd zephyr
python -m venv zephyr-env
source zephyr-env/bin/activate
pip install -r scripts/requirements.txt
pip install cc1352-flasher
west init -l .
west build -b beagleconnect_freedom -d build/bcf/echo_server samples/net/sockets/echo_server -- -DOVERLAY_CONFIG=overlay-802154-subg.conf
west build -b beagleconnect_freedom -d build/bcf/ot_shell samples/net/openthread/shell
west build -b beagleconnect_freedom -d build/bcf/ot_coap_client samples/net/openthread/coap -T sample.net.openthread.ftd.coap.client

jadonk

what board should I use?
Answer

To determine which board to use, let's consider the options provided in the documentation.

You can check out the different boards at: index.rst.

This document lists various boards, including BeaglePlay, BeagleBone, PocketBeagle, and BeagleBoard, each with its unique features and purposes.

jadonk

# This Makefile tries to provide some defaults for building single-file programs on Beagle
# platforms in part by adding an additional suffix ahead of the source file extension. The
# original purpose was to provide ability to run these programs in the Cloud9 IDE environment.
#
# Optional definitions
#
# TARGET - executable to create (currently supports single .c, .cpp or .asm source)
#          should have .<proc>(<n>) extension (lower case, check below for valid options)
#          without TARGET, as of now, we don't have any build targets
#          TODO: work with a list of targets, rather than a single file

jadonk

import time
import datetime
import gpiod

gpio2 = gpiod.find_line('GPIO2')
gpio2.request(consumer='five_min_toggle', type=gpiod.LINE_REQ_DIR_OUT, default_val=0)
prev_rem = -1

while True:
  now = datetime.datetime.now()