Spresense SDK Release Notes

Feature enhancements are available.

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

[LTE] Fixed a rare error when using the ifup command to activate LTE.

[LTE] Fixed an issue in the NuttShell where an assert would occur if you stopped the LTE Daemon using the "lte_daemon stop" command and then ran the "lte_daemon start" command again within one second.

[ASMP] Fixed an issue where an error was not returned when calling the SPK startup API in case of the execution memory was exhausted.

[GNSS] Fixed a typo in the GNSS sample Kconfig（Thanks to @slipperyseal）

[SCU] The API (seq_open()) of the SCU driver has been improved to return an error code when an invalid value is specified.

[UART] The HW Flow control and O_NONBLOCK options are supported by the UART0 driver.

[Graphics] API (imageproc_clip_and_resize()) for clipping and resizing YUV images supports the ability to just clip them.

[Other] The CXD5247’s GPO can now be controlled to set and acquire HiZ status.

Feature improvement are available

[Build] The memory size of the main core application can be changed by linker in the SDK exported environment.

Update the kernel to NuttX 8.2

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

[NuttX] Update a kernel to NuttX version 8.2. It is available to use a new device drivers and new features.

[NuttX] Available for NuttX original applications. It can be used a various sample applications and utility libraries for Spresense.

[Examples] By making NuttX apps available, the sample code directory has been split into the following two locations.

[Build system] Integrated the build system that was separated by Kernel and SDK into one

[UART] Enabled to change the setting of serial terminal by Termios API

[GNSS] Add support for positioning using Galileo/BeiDou satellite

[GNSS] Supports accurate 1-second cycle signals(1PPS signals) output based on satellite time information

[LTE] Add LTE daemon for NuttX network stack

[Graphics] Supports alpha blending of 2D graphics by using CXD5602 hardware accelerator.

[Camera] Refactored camera example.

[MultiWebCamera] Using the Spresense Camera and Wi-Fi. A simple WebCamera app sample has been added.

Feature enhancements are available.

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

[PWM] Support for PWM frequency of 1Hz at a minimum.

[GNSS] Fix a problem that the velocity of PVT log is incorrect.

[Sleep] Fix an issue where it would not wake up when entering Deep Sleep after more than 36 hours of power on.

[Audio] Add an example (audio_sound_effector) of sound effector with low latency.

LTE function is available from this version. This function is limited in Japan.

Feature enhancements are available.

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

[LTE] Officially supported LTE extension board "CXD5602PWBLM1J"

[Camera] Add JPEG as a pixel format for video stream

[SD Card] Fixed the problem that the SD card was not mounted when insert and remove the SD card quickly.

Feature improvement is available

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

[Build] Support for using a user name with multi-byte code in a Windows environment.

Feature improvement is available.

Fix minor bugs.

Feature improvement is available

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

[Audio] Add a framework for implementing Voice recognition with another CPU core.

[System] Improved transfer speed in Zmodem.

Feature improvement is available.

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

*In addition to Ubuntu, Windows and macOS are officially supported as development environment. *
For details, refer to the Spresense SDK Getting Started Guide (CLI).

New features and feature enhancements are available.

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

[Audio] Add a framework for implementing signal processing of microphone input with another CPU core.

[Math] Supported the Math library(Newlib).

[GNSS] Fixed the problem that GNSS positioning can not start immediately after system startup.

[SD] Improved the access performance of the SD card.

[Audio] Updated a sample (audio_recorder) to perform DSP filtering in MicFrontend.

New features and feature enhancements are available.

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

[GNSS] Support to output "DC Report" ($QZQSM) from NMEA sentences.

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

New features and feature enhancements are available.

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

[AI] Support Multicore DNN Runtime.

[Sensor] Add "step-counter" with Activity Recognition.

[Sensor] Add a pressure sensor driver for "BM1383AGLV" on Rohm Add-on board.

[Image] Add "libjpeg" library for JPEG decode.

[Network] Add mbedTLS version 2.6.0.

[Tool] Improve the progress bar when uploading your application.

[Graphics] Add NX Graphics example applications.

New features and feature enhancements are available.

[Camera] Support Gamma correction.

[Audio] Support I2S output with Object Level API.

No new update in this release for this repository.

New features and feature enhancements are available.

[Audio] Support 192kHz/48kHz sampling, 24bit wav recording.

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

[Camera] Support auto exposure and manual exposure time setting.

[Camera] Support still picture with specified number of burst capture.

New features and feature enhancements are available.

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

[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.

[Other] ARM(tm) CMSIS library added.

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

[Other] PWM sample application added.

[Other] uname command in NutShell now shows SDK version.

Some audio advanced features are released.

Support monaural sound playback in WAV format file.