[PD-dev] Porting Pd to FreeRTOS ( was Re: plans for next Pd release)

[Winfried Ritsch]

Am Donnerstag, 15. Juli 2021, 21:39:32 CEST schrieben Sie:
> Yeah, AOO on RTOS will be cool!  For that we should drop bluetooth
> in favor of some flavor of WIFI I think.
> 
> It's tricky getting everything to fit in 512K RAM - I think the new
> ESP32S3 has the same memory size, so that will be the limiting aspect.
> 
Thats true, still a microprocessor, ESP32 is still the biggest with 520kB 
SRAM, but PSRAM 2-8G is also quite fast on the S3, but I think dual core of S3 
would be better than on ESP32-S2, which I use for robotics instruments. ESP32 
for Audio (mostly from Olimex [1]).

mfg
   winfried

[1] https://iaem.at/kurse/ws2021/phycm/olimex-player

> cheers
> M
> 
> On Thu, Jul 15, 2021 at 12:09:45PM +0200, Winfried Ritsch wrote:
> > Am Mittwoch, 14. Juli 2021, 18:03:32 CEST schrieb Miller Puckette via Pd-
dev:
> > > Cool, that's excellent news.  I'm using the ADF i2s audio driver but
> > > staying away from their "streams" since they're too clunky (and they
> > > eat memory). I have only audio, bluetooth serial emulation, and SD card
> > > filesystem, no threaded readsf or networking (probably too
> > > memory-intensive again).> 
> > Starting with the DIYasb [1], distributed streaming devices for field
> > recording and audio projections using Pd, want to include the
> > AOO-Streaming
> > [2] functionality, already tested and used also for VRR [3] now for
> > ESP32xx
> > devices, especially simple Ambisonics Mics and field-speaker for a future
> > project.
> > 
> > Doing simple streaming over WiFi, I did not get any trouble using opus
> > lib,
> > but did no extensive processing until now and allowed enough latency for
> > these applications, but have to dig in deeper... not using bluetooth and
> > waiting for the ESP32S3...
> > 
> > > I had to go way out on a Pd branch to get it running, but I want to
> > > rebase
> > > all that once I get the Pd source in better shape to support it.
> > 
> > thats fine, please keep us updated.
> > 
> > mfG  Winfried
> > 
> > References
> > 
> > [1]
> > https://urldefense.proofpoint.com/v2/url?u=https-3A__git.iem.at_cm_diyasb
> > &d=DwICAg&c=-35OiAkTchMrZOngvJPOeA&r=XprZV3Fxus2L1LCw80hE4Q&m=1G1ft6Y7XaTq
> > dv7GIbZgQevQVIh7dCEYyqblVJUOl8A&s=REqsW94KN3j1zmoTc8fuAzacKH95auw8rnFkm2yK
> > quQ&e= [2]
> > https://urldefense.proofpoint.com/v2/url?u=https-3A__git.iem.at_cm_aoo&d=
> > DwICAg&c=-35OiAkTchMrZOngvJPOeA&r=XprZV3Fxus2L1LCw80hE4Q&m=1G1ft6Y7XaTqdv7
> > GIbZgQevQVIh7dCEYyqblVJUOl8A&s=2H_p8O28epbFdWYd9CdZKxGVaqQIKSEQwpA0UiSQg4c
> > &e= [3]
> > https://urldefense.proofpoint.com/v2/url?u=https-3A__vrr.iem.at_&d=DwICAg
> > &c=-35OiAkTchMrZOngvJPOeA&r=XprZV3Fxus2L1LCw80hE4Q&m=1G1ft6Y7XaTqdv7GIbZgQ
> > evQVIh7dCEYyqblVJUOl8A&s=uN5zUyzjx7xUPEbzK821HONeuQM_qgtNQWdVdA1c6lQ&e=
> > [4]
> > https://urldefense.proofpoint.com/v2/url?u=https-3A__git.iem.at_uC_&d=DwI
> > CAg&c=-35OiAkTchMrZOngvJPOeA&r=XprZV3Fxus2L1LCw80hE4Q&m=1G1ft6Y7XaTqdv7GIb
> > ZgQevQVIh7dCEYyqblVJUOl8A&s=1r_RHEIuU6WoOrdkiSLsH21Z2Ybjm-
GBtKKuX1P5Y2M&e=> 
> > > cheers
> > > Miller
> > > 
> > > On Wed, Jul 14, 2021 at 10:32:23AM +0200, Winfried Ritsch wrote:
> > > > Hello,
> > > > 
> > > > > Before doing that I want to do some reorganizing - in porting Pd to
> > > > > FreeRTOS (so I can run it on an Espressif LyraT board, which I think
> > > > > takes only about 10 or 20% of the current that a Pi needs) I found
> > > > > out
> > > > > that I had to move a few functions from one file to another.
> > > > 
> > > > That is really exciting news, since I do most physical project on
> > > > ESP32xxx
> > > > for distributed computermusic projects from speaker to robotic
> > > > instruments.
> > > > 
> > > > So please let us know how it progress if you need for testing debug or
> > > > other helps. Maybe can help with objects helping interfacing the
> > > > Peripheral possibilities, from touch to solenoids drive...
> > > > 
> > > > Are you targeting the ESP-IDF/ESP-ADF framework ?
> > > > 
> > > > mfg winfried


-- 
- ao.Univ.Prof. DI Winfried Ritsch 
- ritsch at iem.at - http://iem.at/ritsch
- Institut fuer Elektronische Musik und Akustik
- University of Music and Dramatic Art Graz
- Tel. ++43-316-389-3510 (3170) Fax ++43-316-389-3171