Working with Binary Data and Buffers In Node and Node-Red

[@mudman7618]

Steve, I'm working on a project to read and parse a serial data stream from an engine ECM. the stream is at a baud rate of 57600 8N1 configuration, binary data. The stream is 277 bytes of data. The start of the stream if a 2-bit identifier 55 AA, followed by 256 bytes of data, a 1 -bit identifier, 16 bytes of other data and a 2-bit checksum. I need to be able to find a data value in a specific position - say position 105 and read it's data to assign it to a gauge or text box, etc. I'm struggling with the parsing aspect - as I don't know how to find a specific position - I can't look for a specific value - as the values are changing - how would I go about doing that?

[@stevecope]

JavaScript has string search functions that would do it with a little trial and error. If you contact me via the ask steve page I will take a look,
stevesnoderedguide.com/ask-steve
rgds
steve

[@RobertP7884]

thanks for your video, just started with Node-RED.

[@mustafaaljumaili6279]

What do I need to learn in order to start with node red?? I have never learned any programming language before

[@MatSmithLondon]

I like your channel - really good lessons and minimal waffle.

[@stevecope]

Yes correct it is because we try to encode e ecute and ascii doesn't support it.

[@martintoro4363]

Thanks !! helpd a lot!! 🙂

[@Orzelius]

Thanks, this helped me understand better!

[@david-tracy]

subscribed!

[@bkg_livemodel8456]

Good

[@JayRGabz]

only few people care about buffers?