Hello @QiangLi

This code was created based on the code from the Spresense Arduino Library (https://github.com/sonydevworld/spresense-arduino-compatible/blob/3ac9fd04398832052c9ef45d9738979877708384/Arduino15/packages/SPRESENSE/hardware/spresense/1.0.0/libraries/SDHCI/src/SDHCI.cpp#L66-L75).

This is not in the documentation. If you use your function as an entry point, you must wait for the SD card mount if you want to use it.

Here you can find information about Spresense board initialization process: https://developer.sony.com/develop/spresense/docs/sdk_developer_guide_en.html#_board_initialization_process

BR,
Kamil Tomaszewski

Hi @QiangLi

If you want to use some other function as an entry point, you must initialize the Spresense board in it.

To do this, add it to the beginning of your main function (audio_player_main):

boardctl(BOARDIOC_INIT, 0);

The second thing you need to do is wait for the SD card to initialize.

You can do this using this loop:

  /* In case that SD card isn't inserted, it times out at max 2 sec */
  for (retry = 0; retry < 20; retry++)
    {
      if (stat("/mnt/sd0/", &buf) == 0)
        {
          break;
        }
      /* 100 ms */
      usleep(100 * 1000);
    }

  if (retry >= 20)
    {
      printf("Error: SD card isn't inserted.\n");
      return 1;
    } 

When you add these two things to the beginning of your main function (audio_player_main), everything should work now.

BR,
Kamil Tomaszewski

Hello @ahoudeau

The source code that was used by the prepare_arduino.sh script is version 1.4.2. You can check the git log and see the tag.

Version 1.0.0 here does not apply to the Spresense Arduino Library version but only to the version of your custom Arduino15.

You can change this to 1.4.2. Change all occurrences of 1.0.0 to 1.4.2 in the Arduino15 folder.

It will not change anything in the source code. Everything will be the same. Only the Arduino IDE will see that this is a different package.

You shouldn't have any problems. Maybe try:

1. In the Arduino IDE go to Tools-> Board-> Board Manager... and remove Spresense.

2. Go to %userprofile%\AppData\Local\Arduino15 and remove packages and package_spresense_index.json and other files that have spresense in their name.

3. Copy packages and package_spresense_index.json from spresense-arduino-compatible/Arduino15 to %userprofile%\AppData\Local\Arduino15

4. In the Arduino IDE go to Tools-> Board and select Spresense.

Do you use automatic updates in the Arduino IDE?

BR

Hello @ahoudeau

I found a solution. The problem was that there is no zip command in the default installation of MSYS2. You must install an additional package.

To do this run this command from MSYS2:

$ pacman -S zip

After installing this package you should no longer have a problem with the prepare_arduino.sh script.

BR

Hello @ahoudeau ,

The script prepare_arduino.sh prepares an Arduino15 folder that you can use to manually install Spresense Arduino Library. You can find more about manual installation here: https://developer.sony.com/develop/spresense/docs/arduino_set_up_en.html#_manual_installation

The sdk-export.zip comes from the folder in which the Spresense SDK is located.

If your Spresense SDK is here /home/ahoudeau/spresense then the zip file can be found here: /home/ahoudeau/spresense/sdk-export.zip or /home/ahoudeau/spresense/sdk/sdk-export.zip

The sdk-export.zip is an exported Spresense SDK that is created after running the command make export in spresense/sdk.

1. Check if the sdk-export.zip exists in your Spresense SDK.

2. Try running the command make export and see if it will export the Spresense SDK successfully.

Try these 2 steps and write what you got. What OS are you using?

BR

@user1388

Hi,

This is a known issue. I have found a temporary solution for now. Unfortunately, this requires that you build the Spresense Arduino package again. You can use this: https://github.com/sonydevworld/spresense-arduino-compatible

Currently, when an error is detected, the Audio module stops working. However, this can be changed and when FIFO OVERFLOW is detected, samples can be dropped instead.

As a result, the application does not finish recording, but on the other hand does not guarantee that all samples will be saved.

Solution:

• Find function bool AudioRecorderSink::write(const AudioRecSinkData_s &param) in the file sdk/modules/audio/objects/media_recorder/audio_recorder_sink.cpp

• Comment line number 84.

• Return true instead of false on line number 85.

After the changes, the function should look like this:

bool AudioRecorderSink::write(const AudioRecSinkData_s &param)
{
  if (param.byte_size > 0) {
    if (CMN_SimpleFifoGetVacantSize(static_cast<CMN_SimpleFifoHandle *>
        (m_output_device_hdlr.simple_fifo_handler)) < param.byte_size)
      {
        // MEDIA_RECORDER_WARN(AS_ATTENTION_SUB_CODE_SIMPLE_FIFO_OVERFLOW);
        return true;
      }

    if (CMN_SimpleFifoOffer(static_cast<CMN_SimpleFifoHandle *>
        (m_output_device_hdlr.simple_fifo_handler),
        static_cast<const void*>(param.mh.getVa()), param.byte_size) == 0)
      {
        MEDIA_RECORDER_WARN(AS_ATTENTION_SUB_CODE_SIMPLE_FIFO_OVERFLOW);
        return false;
      }

    m_output_device_hdlr.callback_function(param.byte_size);
  }
  return true;
}

This is only a temporary solution. If I find other, I will let you know.

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,

Unfortunately, the current implementation does not support these features.

You can find more information about GNSS on Spresense here:
https://developer.sony.com/develop/spresense/developer-tools/get-started-using-nuttx/nuttx-developer-guide#_gnss

Best regards,
Kamil Tomaszewski

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

Hi @Ben-eaton,

You can try this:

  // Open the file for reading
  myFile = File("/mnt/sd0/test.txt");

  if (myFile) {
    // File test.txt exists
  
    // Close the file
    myFile.close();
  } else {
    // File test.txt does not exist
  }

Best regards,
Kamil