Best (simplest) way to share data between processes

[Chris Green]

Piergiorgio Sartor <piergiorgio.sartor.this.should.not.be.used at nexgo.removethis.de> wrote:
> On 06/07/2024 09.28, Chris Green wrote:
> > I have a Raspberry Pi in my boat that uses I2C to read a number of
> > voltages and currents (using ADS1115 A2D) so I can monitor the battery
> > condition etc.
> > 
> > At present various different scripts (i.e. processes) just read the
> > values using the I2C bus whenever they need to but I'm pretty sure
> > this (quite rarely) results in false readings because two processes
> > try to read at the same time.
> > 
> > Thus I'm looking for ways to prevent simultaneous access.
> 
> Why using "different scripts"?
> Is it there any particular reason?
> 
> Maybe it would be better, if possible, to have
> a single script, which, sequentially, reads
> whatever needs to be read (or written).
> In a loop.
> 
> This is even simpler than using a file.
> 
Yes, but it's conceptually (and programming wise) much simpler to have
separate scripts.  Some of them are simple 'on demand' scripts that I
run from the command line when I want to know something.  Others are
scripts that drive displays on control panels.

-- 
Chris Green
·