@TE-KarlKomierowski
I enabled the DMA option as you suggested, but I did not notice any change to the severity of the flickering. I also checked ILI9340_SPI_MAXFREQUENCY and it was set to 40000000 just as your example.

I agree regarding the NX graphics + framebuffer usage. No sense in re-inventing the wheel. Now that I have discovered a "hook" into the framebuffer, the NX documentation might make a little more sense. I will revisit and research a bit more.

I will definitely keep this thread updated...I also think it is an important dev topic and worth digging into. Stay tuned!

Hi @JCPStevens

By default, when the mode is set to INPUT, the pin state is HIGH. If you want to change it to LOW, change the pin state to LOW.

You can use my example below:

int left=0; int right=0; void setup() { pinMode(4,INPUT); pinMode(6,INPUT); digitalWrite(4, LOW); digitalWrite(6, LOW); Serial.begin(115200); } void loop() { left=digitalRead(4); right=digitalRead(6); if (left==(HIGH)){ Serial.println("Left=High");} if (left==(LOW)){ Serial.println("Left=low");} if (right==(HIGH)){ Serial.println("Right=high");} if (right==(LOW)){ Serial.println("Right=low");} }

Hi @CGM11

Have you seen this: https://nnabla.org/download/ ?
They don't say much about hardware requirements but there is a recommendation to use "CUDA Toolkit and CUDNN (if you have CUDA GPUs)."

@CGM11 said in NNC:

I want to give it a try to the NNC, I don't know if this is the best place to ask this but the NNC google group is not there and I didn't find the info anywhere.
Recommended hardware requirements to run the NNC for windows?
Cheers,

Thanks Karl! I will give it a try....

Thank you I managed to get the RAW format

@atw72
Hi,
Unfortunately that link was broken, please try this:
https://developer.sony.com/develop/spresense/developer-tools/get-started-using-nuttx/nuttx-developer-guide#_setting_of_mic_channel_select_map

Thanks for notifying us, we are looking in to the cause of this problem and how to fix it.

So it turns out that Network Standby can be turned on for EU models using just the API! I don't have an EU model to test, but someone tested my app. This probably means Sony's API method (setPowerSettings) is breaching EU rules, right?

Should we be detecting the region of the AVR somehow before offering this feature? Although, one is merely using the API methods provided by Sony.

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?

@david, thank you.

I can see the list of commands. Once, I have found a command that I'm interested in, how do I query the syntax of said command?

EDIT: I found I can use getMethodTypes (v1.0) with params of just "" to query each library (i.e. "http://{ipaddress}:10000/sony/avContent","http://{ipaddress}:10000/sony/system", etc).

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