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This project forked from buildroot/buildroot

Erpiam is an Embedded Raspberry PI 3 Linux Distribution for Audio and MIDI use. All the heavy lifting is done by Buildroot.

License: Other

Makefile 73.99% Arc 0.05% Shell 6.40% Tcl 0.27% Batchfile 0.34% M4 0.08% C 10.23% C++ 1.31% Perl 1.03% Lex 0.17% Yacc 0.38% CMake 0.09% Ruby 0.04% Python 4.94% Lua 0.19% Assembly 0.49%

raspberry-pi raspberry-pi-3 raspberrypi midi embedded embedded-linux

erpiam's Introduction

Erpiam

Erpiam is an Embedded Raspberry PI 3 Linux distribution for Audio and MIDI

Purpose

This Linux distribution is extremely minimal and configured for low latency and high performance. No services are started at all and a single main application will be launched at the end of the boot process, running full-screen.

Main application

This is currently an example JUCE application, called erpiam-main. It is configured in the 'package/erpiam-main' directory, refer to the Buildroot documentation to make changes. If another binary should be launched during boot, you might have to tweak the executable that is launched in the init script 'board/erpiam/overlay/etc/init.d/S99main'.

The sources of the example JUCE application can be found here: https://github.com/gbevin/erpiam-main

Building

To build Erpiam, do the following:

run 'make erpiam_defconfig'
run 'make'
wait while it compiles
find the kernel, bootloader, root filesystem, etc. in output/images

The file 'output/images/sdcard.img' can be used to install Erpiam on an SD card.

Detailed information about how to install images for Raspberry PI on SD cards can be found on the official Raspberry PI website: https://www.raspberrypi.org/documentation/installation/installing-images/README.md

Here's a video that shows an example of Erpiam in action:

Customizing

To customize Erpiam, do the following:

run 'rm -rf output' to clear all the previous build products
run 'make menuconfig'
navigate towards 'Target packages' and press enter
the top-entry is Erpiam with options underneath
pressing the '?' key when an option is highlighted will provide documentation
press ESC twice to exit
select 'Yes' to save the changes to your configuration

Erpiam can now be built as explained in the beginning of this document.

All thanks to Buildroot

Erpian is created with Buildroot, a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation.

Online documentation for Buildroot can be found at http://buildroot.org/docs.html

Licensing

Buildroot is covered by its own GPLv2 licensing, but since it's a build system that is not part of the final end product, the license of the individual packages should be examined.

The Erpiam files that are in the located at board/erpiam, package/erpiam, package/erpiam-main and configs/erpiam_defconfig, are licensed under the Creative Commons Attribution 4.0 International License.

erpiam's People

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ui-dmitri-arekhta space-ed atinm nicochatzi techtim topisani reverbrick logikstate dctucker aurya-dev rasecninja

erpiam's Issues

[REQ] HiFi usage

Hi there, I just discovered your cool distro and I believe that - due to its minimality - it would be great to be exploited for HiFi purposes too.

I doubt that it's between project goals, but it could be interesting to add active DSPs as in this projects:
https://www.instructables.com/Raspberry-Pi-Music-Server-With-Built-in-Crossover-/

For this and (many) other purposes it could be interesting to integrate this tool:
https://github.com/HEnquist/camilladsp

Last but not least, check out this interesting git about DSP on Pi:
https://github.com/dddomin3/DSPi/

Hope that inspires !

Touchscreen cursor not 1:1

The touchscreen cursor doesn't match the physical touch position. I can't seem to get the touch to work unless another mouse device is plugged in either. I don't mind trying to fix these but if you've got any hints as to where to look it would be much appreciated.

Please consider simpler licensing combo

Hi Geert, great project!

Have you considered releasing your erpiam packaging files under GNU GPL? I ask because this would be simpler for downstream distributors, as buildroot is GNU GPL v2 or later of course.

The mixture of GPL v2 and Creative Commons Attribution 4.0 means that the derived combination would probably be GPL in any case, according to a similar situation with by-sa 4.0: https://www.fsf.org/blogs/licensing/creative-commons-by-sa-4-0-declared-one-way-compatible-with-gnu-gpl-version-3

Thanks!

Daniel

Build failed with "LIBRARY_PATH shouldn't contain the current directory when"

Tried building from Ubuntu 16.04 and got this error:

Configuring in ./gcc
configure: creating cache ./config.cache
checking build system type... x86_64-pc-linux-gnu
checking host system type... x86_64-pc-linux-gnu
checking target system type... arm-uwyn-linux-gnueabihf
checking LIBRARY_PATH variable... contains current directory
configure: error: 
*** LIBRARY_PATH shouldn't contain the current directory when
*** building gcc. Please change the environment variable
*** and run configure again.
Makefile:4153: recipe for target 'configure-gcc' failed
make[2]: *** [configure-gcc] Error 1
make[2]: *** Waiting for unfinished jobs....

Expanding to use linuxsampler natively

Hi! Thank you so much for this platform!

I am interested in using this with linuxsampler to turn my axiom 61 midi controller into a low latency sampler. I'm currently compiling the kernel, per your instructions. I'm sorry if this sounds like a stupid question, but I'm new to this space:

What do I need to do to get to a command line and get linuxsampler working with these sound banks?
http://freepats.zenvoid.org/

I was able to get a build going using kxstudio, but my intention is to use the rpi3 as a standalone. Thank you for your attention in this, any guidance you could offer would be valuable!

v/r,

Gino