This project aims to create an application for the control of the BSWA 308 and 309 sound level meters which allow control via RS232. The BSWA manual has a list of possible commands.
Install nodejs from nodejs.org
Go to this directory and run the command
npm installAll functions are stored in library.js and strung together with the following:
To start logging noise levels of the Custom Measures to data.csv the command
node logCM.jsTo check if the SLM is running or not:
node checkState.jsTo get the Statistical Measure settings:
node getStats.js- Make sure deviceID is set to 1 on the logger
- Commands are sent and received as STX, ID, ATTR, Command or Data, ETX, BCC, CR, LF (eg 0x02, 0x01, 0x43, 0x44, 0x43, 0x55, 0x33, 0x20, 0x3F, 0x03, 0x3D, 0x0D, 0x0A)
- The BCC Block Check Character is calculated by XOR operation of the ATTR and the Command e.g. 43,44,43,55,33,20,3F = 3D. Calculator: https://toolslick.com/math/bitwise/xor-calculator