Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl Monk, Perl Meditation
 
PerlMonks  

Raspberry Pi I2C Address Scanner with HiPi

by jmlynesjr (Deacon)
on Aug 30, 2020 at 02:20 UTC ( #11121191=CUFP: print w/replies, xml ) Need Help??

In browsing the HiPi::Device::I2C documentation I came across the scan_bus() function that loops through all of the possible I2C addresses and returns a list of active addresses.

This script scans the I2C bus and prints the found addresses. This would have been very useful in debugging the OLED scripts!

#! /usr/bin/perl # hipiI2Cscanner.pl - Scan the I2C Bus for active devices # using the HiPi Raspberry Pi Perl Library # Documentation at https://raspberry.znix.com/ # # James M. Lynes, Jr. - KE4MIQ # Created: June 28, 2020 # Last Modified: 08/28/2020 - Initial test version # 08/29/2020 - Change to printf to print address in Hex use strict; use warnings; use HiPi qw( :i2c ); use HiPi::Device::I2C; $SIG{INT} = \&trapcc; # Trap CTRL-C Signal my $dev = HiPi::Device::I2C->new(); # Create I2C Object my @attached = $dev->scan_bus(); # Scan I2C bus for # attached devices print "\nI2C Bus Scanner\n"; # List found devices print "===============\n"; foreach my $addr(@attached) { printf "Found address: %x\n", $addr; } print "Done...\n"; sub trapcc{ die "Terminated by CTRL-C Signal\n\n"; # Kill the script }

James

There's never enough time to do it right, but always enough time to do it over...

Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Node Status?
node history
Node Type: CUFP [id://11121191]
Approved by marto
Front-paged by Corion
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others avoiding work at the Monastery: (2)
As of 2022-01-21 08:35 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    In 2022, my preferred method to securely store passwords is:












    Results (57 votes). Check out past polls.

    Notices?