[PD] LibPd on microcontroller

cyrille henry ch at chnry.net
Mon May 9 17:39:33 CEST 2016


I recently send a mail in this list describing my experience of audio synthesis on microcontroler, but i did not use libpd.

i did not recommend libpd for microcontrolers.

in fact, I did not recommend audio processing on hardware that did not have support for float arithmetic.
(only me or crazy nerd do that).

a micro controller to use is for example the cortex M4. You  can find them on the teensy hardware.
teensy also provide a audio synthesis library, and is supported by arduino IDE.

You can also have a look at the heavy compiler if you want to embedded a pd patch.


Le 09/05/2016 17:01, Christof Ressi a écrit :
> Hi,
> has anyone experience in using LibPd on a microcontroller?
> I wanna try to run some rather basic DSP code on this guy here:
> https://www.olimex.com/Products/IoT/MOD-WIFI-ESP8266-DEV/open-source-hardware
> There are some existing Arduino/C++ frameworks and I thought I could either write my own small DSP library in C++ or use LibPd.
> I understood that LibPd is completely independed of audio drivers and external libraries and since it's plain C code it should work on everything that can run code. However, I have only encountered LibPd in the context of other applications (processing, openFrameworks) and mobile devices so far. Do you think it could work on an ESP8266? I'm also a bit concerned about efficiency, as computation power is rather limited:
> "ESP8266EX is embedded with Tensilica L106 32-bit micro controller (MCU), which features extra low
> power  consumption  and  16-bit  RSIC. The  CPU  clock  speed  is  80MHz.  It  can  also  reach  a  maximum
> value  of  160MHz.  Real  Time  Operation  System  (RTOS)  is  enabled.  Currently,  only  20%  of  MIPS  has
> been  occupied  by  the  WiFi  stack,  the  rest  can  all  be  used  for  user  application  programming  and
> development."
> Christof
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