SenseHat ERROR shutsdown the system

[keefer223]

SenseHat 013 kills the whole system.

Initially SenseHat connects but within a couple of minutes not only does SenseHat disconnect but kills the Node-RED system. the node-red has to be restarted has to be restarted.

30 Jul 20:56:29 - [error] TypeError: Cannot read properties of null (reading 'kill') at Socket. (/home/keefer/.node-red/node_modules/node-red-node-pi-sense-hat/sensehat.js:110:21) at Socket.emit (node:events:527:28) at addChunk (node:internal/streams/readable:315:12) at readableAddChunk (node:internal/streams/readable:289:9) at Socket.Readable.push (node:internal/streams/readable:228:10) at Pipe.onStreamRead (node:internal/stream_base_commons:190:23) keefer@rpi4:~ $

       });
        hat.stderr.on('data', function (data) {
            **// Any data on stderr means a bad thing has happened.**
            **// Best to kill it and let it reconnect.**
            if (RED.settings.verbose) { RED.log.error("err: "+data+" :"); }
            hat.kill('SIGKILL');
        });

?? python2.7 - I thought it was dead?

10 if (!fs.existsSync('/usr/lib/python2.7/dist-packages/sense_hat') && !fs.existsSync('/usr/lib/python3/dist-packages/sense_hat')) { throw "Error: Can't find Sense HAT python libraries. Run sudo apt-get install sense-hat";

sudo apt-get install sense-hat didn't work. I ended up using pip.

Please tell us about your environment:

• [ ] Node-RED version: 301
• [ ] node.js version: v16.16.0
• [ ] npm version:8.15.1
• [ ] Platform/OS: Debian 11
• [ ] Browser: firefox, chrom

[keefer223]

I did more fooling around with the code. There is a better way to catch the error, than: }); hat.stderr.on('data', function (data) { // Any data on stderr means a bad thing has happened. // Best to kill it and let it reconnect. if (RED.settings.verbose) { RED.log.error("err: "+data+" :"); } hat.kill('SIGKILL'); });

after doing some bla bla bla, SenseHat v1 doesn't have a TCS34725 colour sensor, while v2 does have the TCS34725 colour sensor.

the python code checks for the TCS34725 colour sensor.

line 96 # initialise the TCS34725 colour sensor (if possible) try: self._colour = ColourSensor() except Exception as e: logging.warning(e) pass