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v1.4.2 (2019/11/15)

Summary

  • Feature enhancements is available

New features and feature enhancements

  • [Camera] Add Auto White Balance mode.

Improved features

  • [Audio] Reduced the boot time of DSP Codec binary in SPI-Flash.

  • [Core] Improved string conversion accuracy of floating point.

Using this release for Arduino IDE

v1.4.1 (2019/10/04)

Summary

  • Feature improvement is available

Improved features

  • [GNSS] Add API getDCReport() to get QZSS Disaster and Crisis Management (DC Report) sentence.

Using this release for Arduino IDE

v1.4.0 (2019/09/09)

Summary

  • Feature improvement is available

Improved features

  • [Camera Image] Image converter methods of CamImage can be used without Camera Video Stream.

  • [Tool] When "Export compiled Binary" is selected in the ArduinoIDE menu, the name of the selected sub-core is added to the binary file name.

Using this release for Arduino IDE

v1.3.1 (2019/07/11)

Summary

  • Feature improvement is available.

Improved features

  • [GNSS] Improve GNSS sensitivity when SD card is inserted(without accessed).

Using this release for Arduino IDE

v1.3.0 (2019/06/05)

Summary

New features and feature enhancements

  • [MultiCore MP] Add a "MultiCore MP" library to communicate between 6 CPU cores.

  • [LowPower] Add power saving API to select the system clock (156 MHz / 32 MHz / 8 MHz) dynamically.

  • [Flash] Add a library for reading and writing from/to SPI-Flash.

  • [eMMC] Add a library for reading and writing from/to eMMC.

  • [Sensing] Add Sensor Framework with Publish-Subscribe Architecture.

Improved features

  • [Basic] Improve the accuracy of the delay and delayMicroseconds.

  • [SD] Improve the access performance of the SD card.

  • [Build] Changed to C++11 compilation.

New samples

  • [MultiCore MP] Added multi-core sample sketches.

  • [Sensing] Add a sample sketch of a step counter.

  • [Flash] Add a sample to read and write.

  • [eMMC] Add a sample to read and write.

  • [Wire] Add a I2C port scan sketch.

  • [LowPower] Add a sample sketch to change clock mode.

Using this release for Arduino IDE

v1.2.1 (2019/04/25)

Summary

  • New features and feature enhancements are available.

  • This release has a new bootloader which have to be loaded before use.

New features and feature enhancements

  • [Audio] Add API for selecting Analog mic or Digital mic in runtime.

  • [Audio] Add API to be able to change internal buffer size for audio player and recorder.

  • [Audio] Add function which can path the audio data from I2S to speaker with low-latency (Audio through).

Improved features

  • [GNSS] Improve stability when starting positioning by using hot start.

  • [SPI] Improve transfer performance by using deprecated API setClockDivider.

New samples

  • [Audio] Add "player_playlist" sample sketch that is reading playlist for playing music.

  • [Audio] Add "through" sample sketch that is using audio through function.

Using this release for Arduino IDE

v1.2.0 (2019/03/15)

Summary

  • New features and feature enhancements are available.

  • This release has a new DSP binary and bootloader which have to be loaded before use.

New features and feature enhancements

  • [Arduino IDE] Add "--gc-sections" to compile options for reducing memory usage.

  • [RTC] Add Real Time Clock library to manage RTC time.

  • [Watchdog] Add Watchdog library to monitor your system.

  • [LowPower] Add LowPower library to save power like a sleep mode.

Improved features

  • [Arduino IDE] Support a partial update when Spresense Arduino Library is updated.

  • [Arduino IDE] Improve the progress bar when uploading your sketch

  • [Wire] Support the sendStop flag for enabling continuous transmission by using functions of endTransmission() and requestFrom().

New samples

  • [Audio] Add "player_wav" sample sketch that is able to play wav files with tag information.

  • [Audio] Add "recorder_with_rendering" sample sketch that is able to monitor sounds while recording.

Using this release for Arduino IDE

v1.1.3 (2019/01/16)

Summary

  • New features and feature enhancements are available.

New features and feature enhancements

  • [ArduinoIDE] Support "Export compiled Binary".

  • [Audio] Support I2S output with Object Level API.

Improved features

  • [EEPROM] Improve Read/Write speed.

Using this release for Arduino IDE

v1.1.2 (2018/12/17)

Summary

  • Fixed problem about DNNRT.

Fixed features

  • [DNNRT] Fixed continuous recognition processes problem.

Using this release for Arduino IDE

v1.1.1 (2018/11/26)

Summary

  • New features and feature enhancements are available.

New features and feature enhancements

  • [Audio] Support 192kHz/48kHz sampling, 24bit wav recording
    Supported format:

    • 192KHz 16bit

    • 192KHz 24bit

    • 48KHz 16bit

    • 48KHz 24bit

    • 16KHz 16bit

  • [Audio] Support selectable API for audio analog drive power for AC-out or speaker-out.

  • [Camera] Support auto exposure.

Improved features

  • [Audio] Update recording sample sketches(pcm_capture/pcm_capture_objif/recorder/recorder_objif/recorder_wav/recorder_wav_objif/rec_play)

  • [Other] Add new API for change PWM frequency in Wire library.

New samples

  • [Audio] Add Mic-In to AC-out sample sketch(voice_effector).

Limitation

  • [Audio] If overflow occurs in the load situation, recording may not be continued in 24 bit recording with next log message. In this case, please reset the board.

    WARNING: Insufficient buup_assert: Assertion failed at file:components/capture/capture_component.cpp line: 228 task: CAPTURE_CMP_DEV0

Using this release for Arduino IDE

v1.1.0 (2018/10/25)

Summary

  • New features and feature enhancements are available.

  • This release has a new DSP binary and bootloader which have to be loaded before use.

New features and feature enhancements

  • [Camera] Capturing of uncompressed and JPEG compressed image data by using ISX012 camera module.

  • [DNNRT] Deep Neural Network runtime library added.

  • [GNSS] Japanese GNSS satellite QZSS Michibiki: L1C/A complementation signal and L1S augmentation signal are now supported.

  • [Audio] Supports 88.2/96/176.4kHz, 24bit wav decoding.

Improved features

  • [Audio] Support microphone gain.

  • [Audio] Support detail logs while debug funciton is enabled(Debug: Enable).

  • [Other] PWM pins number 3, 5, 6, 9 are changed to stay high just after startup.

  • [Other] Source code using __FlashStringHelper can be compiled.

Using this release for Arduino IDE

v1.0.2 (2018/08/31)

Summary

  • Some audio advanced features are released.

Additional features

  • Support monaural sound playback in wav format file

  • Support I2S out put for sound player

  • Add some audio sample sketches

Improved features

  • The recorded wav format file can be saved correctly on Arduino environment.

Using this release for Arduino IDE