similar to: Serial port problem and strange solution (Fujitsu MCU development under wine)

Hi David, Thank for very much for your reply! I got a reply on the clang mailing list in April from Dmitri: http://lists.llvm.org/pipermail/cfe-dev/2020-April/065115.html and following his advice “attaching pragmas as attributes to functions” I managed to do it, it was actually quite easy. >>Compatibility with an existing compiler is usually compelling - are the compilers you're

Hello all, For the past couple of months I've been writing a new llvm backend for Renesas RL78 MCU: https://www.renesas.com/eu/en/products/microcontrollers-microprocessors/rl78.html The software manual which contains all there is to know about RL78 is available here: https://www.renesas.com/us/en/doc/products/mpumcu/doc/rl78/r01us0015ej0220_rl78.pdf The motivation behind this is the

Hi David, >>Ah, so this is a commercially backed project? Initially it wasn’t. I started to do this in my own free time and after I got something which I could demonstrate I can be much better than what we currently have with GCC it became part of my day to day job. >>But relatively small? (are you the only engineer working on this?) Yes I’m the only one working on this.

hi, I am porting opus encoder to a low end device with 32K ram, 256K flash and 32MHz arm M3 mcu. But opus seems consume too much. To make it work , what I can think of 1, Only fixed point supported 2, Only mono voice application supported 3, Set complexity to zero 4, Support only one sample rate, like 16KHz 5, Silk mode only or Celt mode only My question is , before

Thanks ! On this forum is also shown this information : http://lists.xiph.org/pipermail/speex-dev/2009-January/007050.html According to vk's results, it could be possible to run Speex at 4/6 & 8 kbps on a Cortex M-3 at 36 MHz ... so not excluding the EFM32 ... Nico 2010/3/3 Pietro Maggi <studiomaggi at gmail.com> > On ST forums there is someone that states it has done an

In fact, on my shelf is running speex using Raisonance Primer2 DK and IAR STM32-SK DK. But I want to save the power consumption of the device runnig speex, and EFM32 seems to be a very good candidate. Also, do yo think that the STM32F103 (Cortex M3 90 MIPS) could be used to run Speex at 4 Kbps in real time? Regards, Nicolas 2010/3/3 Jean-Marc Valin <jean-marc.valin at usherbrooke.ca> >

I've been looking closely at LLVM as a means to developing a new toolchain for an MCU core of very similar architecture. To that end, the once included PIC16 backend might be a valuable reference. I found a message in April of this year that indicated it had been dropped from new releases however, and that were it to be resumed "it will be largely a rewrite". I'm wondering if

>> Do you have a link? Google isn't turning this up. >http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20080512/062319.html Wow, PIC looks like a brutal port. AVR would be easy in comparison: stack-based architecture with plenty of registers. However, these architectures share: - 8-bit loads, stores, and arithmetic ops. - Harvard architecture What sizes and

Hi, Do you think that Speex could run in real time on the new EFM32 ultra-low consumption Cortex-M3 MCU (180 ?A/MHz) (NB 8KHz - Quality 4 - complexity 1 / same as STM32F103 Speex lib.) ? Its max speed is 32 MHz (about 40 MIPs). Thanks. Regards, Nicolas -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hello All, I'm looking to try to port a Opus Decoder and Encoder onto the TI CC3220SF (http://www.ti.com/product/CC3220) device. Currently, I have successfully been able to get the decode working for a .ogg file saved locally to the serial flash. My end goal is bidirectional audio using OPUS between two devices. While looking into the documentation for the Encoder, I was not sure what the

Hello everyone. I would like to use the opus codec in the following scenario: the PCM audio signal, coming from bluetooth module is captured by STM32F446 MCU and then decoded by opus codec. However, I don't know where to start to build the opuslib for ARM Cortex-M4. Could someone provide any hints or give any brief guide on this? WBR, Aleksandr -------------- next part -------------- An

Hello everyone. I would like to use the opus codec in the following scenario: the PCM audio signal, coming from bluetooth module is captured by STM32F446 MCU and then decoded by opus codec. However, I don't know where to start to build the opuslib for ARM Cortex-M4. Could someone provide any hints or give any brief guide on this? WBR, Aleksandr -------------- next part -------------- An

Hi all, I would like to implement an opus encoder on a TI CC2650 MCU (128 kB Flash). I did not find any information about the hardware requirements of opus, but I found that someone already had trouble with the flash size with the 512 kB ATMEL AT32UC3B0512. (http://lists.xiph.org/pipermail/opus/2016-August/ 003611.html) Do you think I should start implementing or rather find an other

John Regehr wrote: > I ask since gcc is causing significant pain for one of my students. He > could switch over to LLVM but only after writing a backend for AVR (8-bit > RISC). An AVR backend would be very cool. AVR is way more compiler friendly than PIC, so it should not be all that difficult either. The only hitch is that in the MCU world people expect to be able to write interrupt

On Mon, 2008-05-19 at 20:40 +0300, Pertti Kellomäki wrote: > The only hitch is that in the MCU world people expect to be > able to write interrupt handlers and the like in C... Most of the support that I have seen for this in other compilers amounts to custom calling conventions and preambles. Are you thinking of more than this?

I'm working with an experimental backend for an MCU with heavy multithreading capabilities but lacks proper acquire/release semantics. This is okay, as the programmer can customize __cxa_guard_acquire and __cxa_guard_release to lower/raise appropriate semaphores. The issue I'm having is that I can't seem to figure out when to lower atomic load into an acquire/load pair early

taken from bug 881 (now resolved) :-( ---------------------------------------------------------------------- markster - 05-19-2004 09:21 CDT ---------------------------------------------------------------------- As it turns out the 10S cannot conference on the device. From Jean-Francois at Swissvoice: Hi Mark, IP10S have not the capabilities to mix by itself 2 RTP flows, that why it refuses

Hi I’m currently trying to implement the Opus codec on a nRF 52 DK (from Nordic). One main goal of my project is a low power application that can record and send audio data (16+ kHz) over BLE. Therefore, the Opus audio codec would be suitable to encode audio data, send it over BLE and decode it on another chip. Unfortunately, I have some trouble implementing it. There are different parts to the

On Sep 20, 2011, at 10:59 PM, Matthew Hilt wrote: > I've been looking closely at LLVM as a means to developing a new toolchain for an MCU core of very similar architecture. To that end, the once included PIC16 backend might be a valuable reference. I found a message in April of this year that indicated it had been dropped from new releases however, and that were it to be resumed "it

Thank you for both of your input. Yes, I try to cross-compile for AVR, the simple ATMEGA328P used in every Arduino Uno. My main motivation being that I hope to be able to use a couple of STL containers, <functional> and <type_traits> on the MCU. Not sure though if this can be reached by going via the clang route. Getting back to the compilation: when I run clang with both both