Spresense

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  Where do I get started with Spresense development?
  • DanielSand  

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  Getting started with Spresense using Arduino:
  https://developer.sony.com/develop/spresense/developer-tools/get-started-using-arduino-ide/set-up-the-arduino-ide

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  Digital Microphones and Arduino
  • atw72  

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  Hi @atw72

  Could you try the following and see what the outcome is?

  #include <SDHCI.h> #include <Audio.h> SDClass theSD; AudioClass *theAudio; File myFile; bool ErrEnd = false; /** @brief Audio attention callback When audio internal error occurc, this function will be called back. */ static void audio_attention_cb(const ErrorAttentionParam *atprm) { puts("Attention!"); switch (atprm->error_code) { case AS_ATTENTION_CODE_INFORMATION: case AS_ATTENTION_CODE_WARNING : ErrEnd = false; break; case AS_ATTENTION_CODE_ERROR : case AS_ATTENTION_CODE_FATAL : default: ErrEnd = true; } } /** @brief Setup recording of mp3 stream to file Select input device as microphone <br> Initialize filetype to stereo mp3 with 48 Kb/s sampling rate <br> Open "Sound.mp3" file in write mode */ static const int32_t recoding_frames = 400; static const int32_t recoding_size = recoding_frames * 288; /* 96kbps, 1152sample */ void setup() { theAudio = AudioClass::getInstance(); theAudio->begin(audio_attention_cb); puts("initialization Audio Library"); /* Select input device as microphone */ theAudio->setRecorderMode(AS_SETRECDR_STS_INPUTDEVICE_MIC, AS_MICGAIN_HOLD, 68, true); /* Initialize filetype to stereo mp3 with 48 Kb/s sampling rate Search for MP3 codec in "/mnt/sd0/BIN" directory */ theAudio->initRecorder(AS_CODECTYPE_MP3, "/mnt/sd0/BIN", AS_SAMPLINGRATE_48000, AS_CHANNEL_STEREO); puts("Init Recorder!"); /* Open file for data write on SD card */ myFile = theSD.open("sound.mp3", FILE_WRITE); /* Verify file open */ if (!myFile) { printf("File open error\n"); exit(1); } theAudio->startRecorder(); puts("Recording Start!"); } /** @brief Record given frame number */ void loop() { err_t err; /* recording end condition */ if (theAudio->getRecordingSize() > recoding_size) { theAudio->stopRecorder(); sleep(1); err = theAudio->readFrames(myFile); goto exitRecording; } /* Read frames to record in file */ err = theAudio->readFrames(myFile); if (err != AUDIOLIB_ECODE_OK) { printf("File End! =%d\n", err); theAudio->stopRecorder(); goto exitRecording; } if (ErrEnd) { printf("Error End\n"); theAudio->stopRecorder(); goto exitRecording; } /* This sleep is adjusted by the time to write the audio stream file. Please adjust in according with the processing contents being processed at the same time by Application. */ // usleep(10000); return; exitRecording: theAudio->closeOutputFile(myFile); myFile.close(); theAudio->setReadyMode(); theAudio->end(); puts("End Recording"); exit(1); }
• J

  audio scope
  • JCPStevens  

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  Hi @JCPStevens ,

  Ok, let's sort this out once for all.

  I did the following on a Ubuntu machine to get this to work:

  git clone --recursive git@github.com:TE-KarlKomierowski/hackster_projects.git

  After that I opened Arduino IDE and from the Sketch menu I took Include library->Add .ZIP library
  In the file browser I selected the folder in the git repo as follows:

  ~/hackster_projects/spresense-audio-scope/arduino-lib
  I selected TFT folder and clicked OK

  I then opened arduino-scope-ino in the Arduino IDE and pressed the button Verify to build the sketch.

  This failed. It turns out that the TFT library defines a macro that is named swap and this is later being used in other libraries which confuses the build system.

  The quickes way to get around this for me was to simply add the following on line 7 to the arduino-scope.ino sketch:

  #undef swap

  The undef part must be between the include <TFT> and include <Audio.h>

  #include <TFT.h> /* Include TFT.h first, then Audio.h to avoid __SD_H__ being defined in the Audio.h. */ #undef swap #include <Audio.h>

  After doing this I can build the sketch.
  I have been using a Ubuntu PC with Arduino IDE version 1.8.9.

  I have built for target Spresense.

  Hope that this will work for you too.
  If you run into problems, please past your errorlog into your post and I will try to help out.

• 

  Batteries / Consumption and Safety
  • CGM11  

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  Thanks for the link and advice @TE-KarlKomierowski . I just need to do a quick and dirty demo without burning the Spresense in the process. I won't use those batteries on real deployments because they can easily leak toxic fluids.

  BR.
  Carlos.

• 

  NNC
  • CGM11  

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  @CGM11 said in NNC:

  @TE-KarlKomierowski Sorry Karl, I didn't see your answer. But as I told you, it is good for other people to know it as well, the NNC works pretty fine in a MacBook Pro using Parallels.

  Regards and thank you.

  Hi @CGM11

  Ok, thank you for the information!

  Br
  /Karl

• J

  How to insall software correct for Spresense Audio-Scope
  • JCPStevens  

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  J

  Probably I get an error message when I try the git command because the ZIP download already exists. I thougt that the library file wasn't installed.
  But the next problem is that the example Sketch audio_scope already gives an error message by compiling it, and I don't have the knowledge to understand the code completely.
  Until now I thougt that the Sketch wouldn't work because the required library wasn't available.
  I have taken over the Sketch litterally from the Sony Spresense Sample Projects tutorials.
  What is here going wrong?

  Already thanks for the effort,
  greets Marc.

• 

  Writing directly to image Framebuffer - Spresense SDK
  • Cameron R MANN  

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  @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!

• J

  DigitalRead()
  • JCPStevens  

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  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");} }
• 

  NuttX Camera Example Configuration Options Missing
  • Cameron R MANN  

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

• M

  RAW output format
  • Meezy  

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  Thank you I managed to get the RAW format

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  Recording at 192khz freezes
  • Ben eaton  

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  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.

• D

  Question about audio dsp on the spresense...
  • Derek  

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  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.

• 

  GPS - Compass - Heading
  • CGM11  

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  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!

• 

  PIN settings to save energy
  • CGM11  

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  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.

• V

  Multithreading using SPresence with Arduino SDK
  • Vraj Patel  

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  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?

• 

  ISR and Kernel Panic
  • CGM11  

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  No one has replied

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  up_assert: Assertion failed at file:manager/audio_manager.cpp line: 649 task: init
  • Ben eaton  

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  K

  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

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  exists() on the sd
  • Ben eaton  

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  @KamilTomaszewski

  thanks

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

  b

• T

  std::string class
  • takashi  

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  No one has replied

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  How to set the initial NuttX kernel configuration
  • JCPStevens  

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  A

  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.