christianchristensen

/vendor

christianchristensen

Configuration

NOTE: ultimately configuring the device directly caused instability; I had to use the UniFi controller to provision with the option of SNMP enabled to actually get this to work...

BZ.v3.7.58# grep -i snmp /tmp/system.cfg
snmp.community=public
snmp.status=enabled

christianchristensen

FreeBSD/arm/BeagleBoneBlack

These notes pertain to booting FreeBSD on the BeagleBone Black without an eMMC chip (a.k.a. ANTMINER stripped down version)

From FreeBSD-11.0-RELEASE-arm-armv6-BEAGLEBONE.img

No output...

christianchristensen

<?xml version="1.0" encoding="UTF-8"?>
<zabbix_export>
    <version>3.2</version>
    <date>2017-02-26T04:08:53Z</date>
    <groups>
        <group>
            <name>Templates</name>
        </group>
    </groups>
    <templates>

christianchristensen

.jenkins.yml

Build configuration(s) closer to code; inspired by .travis.yml

• Default yaml file to define a build that runs make test
• Preserves No State Between Builds (runs all commands over SSH in isolated virtual machines)
• The standard Unix exit code of "0" means the build passed; everything else is treated as failure.
• Specify branches to build (whitelist, blacklist)
• Secure environment variables (keys, configuration, ...)

christianchristensen

Model: GFLT100 HW: 2.0 Date: Dec. 8th 2013

UART / Serial connection (pinouts next to fiber I/O, C45, C46, J5):

WG
RB

christianchristensen

Raspberry pi software defined radio notes

Hardware

• Raspberry Pi model B*
• Realtek Semiconductor Corp. RTL2838 DVB-T (RTL2832U)
• USB Wifi

Setup

christianchristensen

#!/usr/bin/env python

# Parser for Motorola SB6141 Signal page
# Motorola_SB6141_cmSignalData.py <tablename> <column>
#  Specify the tablename to return all available (Zabbix LLD format) Bonding Channel Values
#  Specity tablename and column to return a specific value for the table and channel
# Data based on Model Name: SB6141, Firmware Name: SB_KOMODO-1.0.6.16-SCM00-NOSH
# Downstream: Frequency, Signal to Noise Ratio, Downstream Modulation, Power Level
# Upstream: Frequency, Ranging Service ID, Symbol Rate, Power Level, Upstream Modulation, Ranging Status
# Signal Stats (Codewords): Total Unerrored Codewords, Total Correctable Codewords, Total Uncorrectable Codewords

christianchristensen

Modern (web) Makefile

Concept:

Dependency-less: start with only Unix utilities as specified by IEEE Std 1003.1-2008, SUS; then build up (or error) with what is needed.

Makefile:

christianchristensen

FreeBSD Chromebook

https://wiki.freebsd.org/Chromebook

C720 (Arch wiki)

http://blog.grem.de/pages/c720.html

• D1741: Improve memory detection in biosmem.c