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sonoff [30.11.2020 13:58] – [Falshing Tasmota Firmware] Pascal Sutersonoff [07.09.2021 05:52] (current) – [Making the installation permanent] Pascal Suter
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 here are the steps using Tasmotizer:  here are the steps using Tasmotizer: 
-  * install tasmotizer: <code+  * install tasmotizer: <code>
 pip3 install --upgrade pip wheel pip3 install --upgrade pip wheel
 pip3 install tasmotizer pip3 install tasmotizer
 tasmotizer.py</code> tasmotizer.py</code>
   * under "Select Image" choose "release" and then select whatever image you want to flash, in most cases this will be ''tasmota.bin''    * under "Select Image" choose "release" and then select whatever image you want to flash, in most cases this will be ''tasmota.bin'' 
-  * connect your sonoff to the serial2usb adapter WITH MAINS DISCONNECTED!! hold down the push button and plug-in the usb adapter. +  * connect your sonoff to the serial2usb adapter WITH MAINS DISCONNECTED!! here is the necessary wiring.. note that rx and tx are crossed over between the two devices. VCC is 3.3V NOT 5V! {{:sonoff:pasted_20201130-140133.png}} 
 +  * here's the pinout for a shelly1 .. with the shelly1 you need to connect the gpio1 pin to ground whil you power it on in order to get it into flash mode.. {{:sonoff:pasted_20201204-194342.png}} 
 +  * hold down the push button and plug-in the usb adapter. 
   * let go of the push button and click "refresh" next to the "Select Port" drop down. most likely this will see and select your usb adapter    * let go of the push button and click "refresh" next to the "Select Port" drop down. most likely this will see and select your usb adapter 
   * click "Tasmotize" and wait for it to erase and reflash your device.    * click "Tasmotize" and wait for it to erase and reflash your device. 
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 copy the ''mqtt-dss-bridge'' ''config.js'' file to ''/usr/local/lib/node_modules/mqtt-dss-bridge/config.js''  copy the ''mqtt-dss-bridge'' ''config.js'' file to ''/usr/local/lib/node_modules/mqtt-dss-bridge/config.js'' 
 +
 +It happened a couple of times, that the  mqtt-dss-bridge process was running without actually updating the state of the dss target. this happened after some network issues for example. since the mqtt-dss-bridge process did not exit but rather continued to run and just do nothing, systemd did not notice any problem and did not restart the service. for that reason I created a little wrapper script which checks the age of the last status update and exits with exit code 1 if that state is older than 10 seconds for longer than 10 seconds (it usually takes a couple of seconds upon starting the gateway to catch up, hence we wait 10 addiitonal seconds before killing mqtt-dss-bridge and exiting with an error state) 
 +
 +This wrapper also mutes the output of mqtt-dss-bridge which otherwise floods your syslog. 
 +
 +save this script to a convenient location such as ''/usr/local/bin/mqtt-dss-bridge.sh'' 
 +<code bash /usr/local/bin/mqtt-dss-bridge.sh>
 +#!/bin/bash
 +
 +# start the bridge in the background 
 +/usr/bin/node /usr/local/lib/node_modules/mqtt-dss-bridge/index.js > /dev/null 2>&1 &
 +PID=$!
 +echo "DSS Bridge started with PID $PID"
 +# start a loop to monitor the status every second
 +errcntr=0
 +lastUpdate=999
 +while true; do 
 +    lastUpdate=$(( \
 +            $(date +%s)\
 +            -\
 +            $(date -d "$(\
 +                mosquitto_sub -h localhost -u sonoffs -P sonoff -t dss/state/lastDiscovered -C 1 | \
 +                sed -E -e 's/"([0-9]{4}-[0-9]{2}-[0-9]{2})T([0-9]{2}:[0-9]{2}:[0-9]{2}).*$/\1 \2Z/'\
 +            )" +%s)\
 +        ))
 +    if [ 10 -lt $lastUpdate ]; then 
 +            if [ $errcntr -lt 10 ]; then
 +                let errcntr++
 +                echo "DSS Bridge state is too old (last updated $lastUpdate seconds ago, max 10 allowed). This was failure $errcntr out of 10 accepted failures" 
 +            else 
 +                echo "DSS bridge state is still too old ($lastUpdate seconds) after 10 retries. killing mqtt-dss-bridge (pid $PID) and exit with error status 1"
 +                kill $PID
 +                exit 1
 +            fi
 + fi
 +    sleep 1
 +done
 +</code>
  
 create the startup service file for ''mqtt-dss-bridge'':  create the startup service file for ''mqtt-dss-bridge'': 
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 [Unit] [Unit]
 Description=Node.js MQTT DSS Bridge Description=Node.js MQTT DSS Bridge
-Requires=mosquitto.service       # starts mosquitto first when this service is started manually +# Requires the mosquitto service to run first 
-After=mosquitto.service       # starts this after mosquitto on boot+Requires=After=mosquitto.service
  
 [Service] [Service]
-ExecStart=/usr/bin/node /usr/local/lib/node_modules/mqtt-dss-bridge/index.js+#ExecStartPre=/bin/sleep 60 
 +ExecStart=/usr/local/bin/mqtt-dss-bridge.sh
 # Required on some systems # Required on some systems
 #WorkingDirectory=/usr/local/lib/node_modules/mqtt-dss-bridge/ #WorkingDirectory=/usr/local/lib/node_modules/mqtt-dss-bridge/
 Restart=always Restart=always
- # Restart service after 10 seconds if node service crashes+ # Restart service after 10 seconds if wrapper exits with code > 0
 RestartSec=10 RestartSec=10
  # Output to syslog  # Output to syslog
  • sonoff.1606741119.txt.gz
  • Last modified: 30.11.2020 13:58
  • by Pascal Suter