Hi @Ben-eaton

In the last code the ErrEnd will be set true when you get an error, if you instead of executing goto exitSketch just stop and restart the recording things shouldn't freeze. I have not verified this to 100% but I got this information from a college.

@Ben-eaton said in Recording at 192khz freezes:

if (ErrEnd)
{
printf("Error End\n");
theAudio->stopRecorder();
goto exitSketch;
}

I know that this issue have been discussed via email and our ambition is to post a conclusion in this thread once we have a final answer for you and the rest of the forum readers.

Hi Derek,

You can get the sampled raw audio data.
In the official SDK repo you can find a example called audio recorder. This recorder will record audio and store it into a file on the SD card.

I have used this example to get the raw audio stream.

The bytes in the stream are arranged in the same way as the wave file format.
http://soundfile.sapp.org/doc/WaveFormat/

If you look in the function app_write_output_file you will see how the fifo is being read.
https://github.com/sonydevworld/spresense/blob/master/examples/audio_recorder/audio_recorder_main.cxx

@Derek said in Question about audio dsp on the spresense...:

I'm intrigued about the possibility of moving my Teensy 3.6 based quadrature dsp work to the Spresense. Currently I use I2S input to and from an external 16-bit codec as the real-time IO and process in length 128 blocks. I haven't yet purchased an Spresense, because it seems that the audio libraries are limited to recording and playback of speech/music. Is there a way to do block processing of a continuous raw data stream in the SDK? I can't seem to find any reference to line-in/out levels in the reference stuff...
Thanks.

Hi @TE-KarlKomierowski Thx, I don't need a superb accuracy, I use it to know where the camera is looking to in order to tell other devices that a "subject of interest" be it a Jaguar or a Human is going in that direction once the subject runs out of the visual scope of one the camera (a multi camera tracking scenario)

I integrated one already (I don't wan't to keep it, for power consumption and simplicity reasons) but I wanted to know if I have to design the case including that part or not. I will keep it for a while then.

Have a great day. You guys Rock!

Hi @TE-KarlKomierowski , I was talking about unused pins (I wasn't explicit about the unused word sorry, avoiding floating pins), setting unused pines as OUTPUT or INPUT helped a lot on other hardware I use. So, OUTPUT-HIGH, thx.

Thanks also for the suggestion, that thing looks really cool and useful.

Keep it up.

Hi @Vraj-Patel

You could take a look at the Nuttx tasks info pages and see if you can manage to create something from that:

http://www.nuttx.org/doku.php?id=wiki:nxinternal:nxtasking#nuttx_tasks

This should be possible to use in the Arduino SDK

@Vraj-Patel said in Multithreading using SPresence with Arduino SDK:

I am trying to run a multi-threaded program on the SPresence microcontroller using the Arduino SDK however, I am not sure how to create threads using the SDK. Would anyone be able to do a simple demonstrate how to create & end threads, wait for a thread, and send information to a thread with some code?

Hi @Ben-eaton,

To analyze a stack dump the Spresense full SDK provide a tool where you can specify two files as arguments. One is your saved log file, and the other one is the system map file. Doing that you should be able to get the stack trace. If you have build your software with the Arduino IDE you should be able to find where your map file is located in the Arduino IDE log window. Go to File -> Preferences -> Settings -> Show verbose output during and select compilation and when you build your sketch you should be able to find where your build folder is. Normally this folder would be located in /tmp and look something like this:

/tmp/arduino_build_724727/

Fetch the full SDK from github:

git clone --recursive git@github.com:sonydevworld/spresense.git

Change directory to the SDK:

$cd spresense/sdk spresense/sdk$ ./tools/callstack.py -h Usage: python ./tools/callstack.py <System.map> <stackdump.log>

Now just specify the location of your files:

./tools/callstack.py /tmp/arduino_build_724727/output.map stackoverflow.log

Best regards,
Kamil Tomaszewski

@KamilTomaszewski

thanks

managed to get the exists() working not sure what i was doing wrong first time round

b

have you read Spresense SDK Getting Started Guide?

https://docsbay.net/spresense-sdk-getting-started-guide

I did it in the same way and everything worked perfect.

@KamilTomaszewski Thx

@TE-KarlKomierowski

That's too bad. The FastLED library is used by many Arduino users, including myself. That it doesn't work with the Spresense is a show stopper for me. I'm not skilled enough to try and port it to the Spresense. Thanks for your help.

👍 had missed that

@KamilTomaszewski: Your instructions resolved the issue. I can now build within MSYS without error 👍

@TE-KarlKomierowski

It works! Edited Adafruit_ILI9341.cpp to isolate the changes to ILI9341 only. Saved all files and re-ran the example successfully. Very good information going forward.

As soon as I read "SPI_MODE....." I facepalmed myself. I debugged an issue with an ADC not too long ago and this was the issue, SPI clock polarity/phase. Even dragged out the logic analyzer on that problem, and observed the bits were shifted....phasing issue. Probably the same road I would have taken to investigate this.

Thanks Karl! 👍

@thedubdude

Have you viewed the Spresense developer manuals?

https://developer.sony.com/develop/spresense/developer-tools/get-started-using-arduino-ide/set-up-the-arduino-ide#arduino_multicore

Hi @sgstreet

As for now the two documents on this page: https://www.sony-semicon.co.jp/products_en/spresense/ are all there is for chip documentation. I can try to see if I can get any information on if there will be an update soon.

BR
Karl

@TE-KarlKomierowski

working now, thanks!