Spresense SDK Release Notes

Feature enhancements are available

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

[Wi-Fi Halow] Add a new driver for Vizmonet Spresense Halow board ahSP1.

[Audio] Add a source code generator tool (mkalwcomp.py) for easier implementation of signal processing on the worker program.

[Bluetooth] Add a config option (CONFIG_CXD56_BLE1507_RESET_PIN_XXX) for the driver to control the reset pin to the BLE1507 board.

[Bluetooth] Add the BLE APIs:

[Bluetooth] Add an option (CONFIG_NRF52_SCAN_COMPAT_MODE) to allow connections for legacy peripheral devices that do not support the window offset value of 0 for scan parameters.

[Bluetooth] Fix an issue that it fails pairing with devices with bonding information.

[Bluetooth] Fix an issue that could cause rescanning to fail after disconnecting from a peripheral device.

[Bluetooth] Fix an issue that could prevent BLE service discovery from completing.

[System] Fix an issue that the PIN_EMMC_XXX are reset after waking up from cold sleep.

[System] Fix an issue of waking up immediately from cold sleep when SD card is inserted on the LTE extension board.

[I2C] Add a config option (CONFIG_I2C_RESET) to recover when I2C device hangs.

[FileSystem] Improve access performance to SD card.

[ASMP] Allow the worker program to use printf for debugging.

[Ethernet] Improve an issue that error rarely occurs in SPI communication with the WIZnet W5500.

[LTE] Fix an issue that caused an assertion when sendto() is executed after opening a UDP socket.

[Tool] Improve libncurses installation failure when running the install script (install-tools.sh) on Ubuntu.

[Bluetooth] Add BLE Mouse Central example (ble_mouse_central).

[Bluetooth] Add BLE toio Central example (ble_toio_central).

[Audio] Add Audio FFT example (audiolite_fft) generated by AudioLite’s code generator tool mkalwcomp.py.

[UART] Add UART bridge example (uart_bridge) to bridge UART2 and Debug UART.

Feature enhancements are available

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

[NuttX] Kernel has been updated from NuttX 11.0.0 to NuttX 12.3.0.

[GNSS] Add the feature to receive Michibiki disaster and crisis management report on the GNSS Add-on board.

[System] Add the feature to use GNSS RAM (640KB) as general-purpose memory.

[Bluetooth] Add support for BLE GATT indicate.

[Bluetooth] Add support for BLE GATT Write without response.

[Bluetooth] The part of API used from the application has been changed without compatibility.

[LTE] Update the feature of hibernation.

[LTE] Modem reset control for fail-safe follows the power sequence.

[Audio] The NuttX Audio driver for the CXD5602 has been updated.

[Audio] Added two examples for AudioLite.

[Bluetooth] Fix an issue of BLE GATT database discovery.

[LTE] Fix an Issue#676 that LTE fails to initialize after reboot by watchdog timer.

Feature enhancements are available

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

An updater is now available to correct a problem with the FPGA circuitry of the HDR camera that causes color errors in some pixels when acquiring QVGA/QQVGA JPEG images. Please download and execute the updater from the HDR camera section of this link.

[GNSS] Add a driver and example applications for GNSS Add-on boards.

[Bluetooth] Add support for BLE extended advertisement.

[Bluetooth] The BLE connection status change notification I/F ( connect_status_changed() ) can acquire the reason for the status change.

[Build] Fix an issue where CMSIS could not be built in the MSYS2 environment due to restrictions in the NuttX build system.

[ASMP] Fix an issue that timeouts in the mpmq_timedrecieve() does not work.

[Audio]Fix an issue that AudioLite’s MP3Decorder could not play long IDv3 TAG files.

[Bluetooth] Fix an issue that the 128-bit UUID of Characteristic can not be acquired during DeviceDiscovery.

[LTE] Revise the power control sequence of the Spresense LTE board.

[Tools] Fix an issue that the thread information does not display on the debugger of the IDE.

[Bluetooth] Add BLE MIDI Central example (ble_midi_central).

[Camera] Fix an issue that ISX019 HDR camera does not work if dynamic clock change mode is enabled. (Thanks to @takumiando)

Feature enhancements are available

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

[NuttX] Kernel has been updated from NuttX 10.2.0 to NuttX 11.0.0.

[ELTRES] Add a driver for ELTRES.

[LTE] Supports a function (called as "LTE hibernation function") that maintains the LTE connection state even when Spresense is in Sleep.

[Bluetooth] Support a central function of BLE(BLE1507 board).

[Audio] Add the AudioLite library, a simpler and easier to use version of the current Audio, and its samples.

[MOSS-FW] MOSS-FW, a framework for sensor processing published by SonySemiconductorSolutions, is added as an external library.

[eMMC] Support the 3rd party eMMC add-on.

[Tools] Add a miniterm which is a terminal application for PySerial.

[Build] Support Windows11 as one of operation system supported for development environment.

[Bluetooth] Fix the problem that CB of Write event was not called as expected in BLE driver.

[Bluetooth] BLE pairing information can be retained even if the power is turned off.

[Audio] Support for playback without playlists in examples/audio_player_objif.

[Camera] Added "Metering Mode" API to adjust exposure for an area centered on a specified point

[LTE] Optimized the power sequence when turning on the LTE power.

[System] Changed the format displayed by uname -a.

[Examples: i2c_direct] Add a sample that directly calls the I2C API to control the BMI270 device. (Thanks to @shino-ixy)

[Examples: rs422] Add a sample for RS-422/485 Add-On board. (Thanks to @shino-ixy)

[Examples: lte_azureiot] Embed the certificate used in the lte_azureiot sample into the code. (Thanks to @takumiando)

Feature enhancements are available

[Bluetooth] Support BLE1507 board with ISP1507(nrf52832).

[ELF] Improve the features of loadable ELF.

[FileSystem] Fix a problem in which LFN (Long File Name) files created on SD cards are recognized as 8.3 format files when read on Windows.

[Wi-Fi：GS2200M] Fix a problem in which the blocking API such as accept() can not get out of the blocking state when it is in a waiting state and reconnected with the access point.

[Examples: multi_webcamera] Fix a problem in which the server never accept connections from clients if an accept() error occurs on the server socket.

[LTE] Reduce power consumption when using LTE extension board.

[LTE] Optimize the power sequence when turning LTE power on.

[Dev Tools] Shell script shebang have been updated to be independent of the Bash installation path. (Thanks to @nimish)

[Examples: lte_azureiot] Fix a problem that the upload command of lte_azureiot sometimes fails to send files. (Thanks to @takumiando)

Update CONTRIBUTING.md.

Feature enhancements are available.

[Camera] Improve the features of the ISX019 HDR camera.

[Camera] Improve the features of the ISX012 camera.

[LTE] Optimize the power sequence when turning LTE power on.

[WebSocket] Fix an issue in the WebSocket library. This improves poor connections with some servers.

The kernel of the Spresense SDK has been updated to NuttX 10.2.0.

Updated versions of the external libraries.

[NuttX] The NuttX kernel has been updated from NuttX 10.1.0 to NuttX 10.2.0.

[External Libraries] Various external libraries have been updated.

[Development Environment] Writing software images and files by flash.sh is now supported in WSL2 environment.

[Wi-Fi/Camera] Fix an issue where the Wi-Fi camera sample (multiwebcam) would stop when reloading the connected browser.

[LTE] Fix an issue where large size SMS messages could not be received correctly in rare cases.

[LTE] Fix an issue where repeatedly initializing and terminating LTE would cause the memory usage to increase by 144 bytes.

[Audio] Fix an issue where repeated initialization and termination of Audio Recorder would cause the memory usage to increase by 768 bytes.

[Sensor] Fix a problem in which semaphores could not be released in rare cases when using multiple SCU sensors in parallel. (Thanks to @TE-TakatoshiSuzuki)

[OS] Fix a problem in which an incorrect memory address was accessed in the getopt function. (Thanks to @takumiando)

[Camera] Add a digital still camera application (dsc) for both ISX012/ISX019.

[Network/GNSS] Add a sample (ambient_gnsslogger that uploads GNSS positioning data to the Ambient server.

[Sensor] Add an SCD40/41 CO2 sensor driver and a sample (scd41) to get sensor data.

Feature enhancements are available.

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

[Network] OSS VTun, which enables virtual network tunnels, is now supported.

[LTE] Add support for SMS over LTE network, allowing users to create applications that can send and receive SMS between Spresense LTE extension boards or smartphones.

[DNN] Update DNN Runtime Library to version 1.23.0.

[DNN] Multicore DNN Runtime based on the MPCOMM framework is released.

[Network] Update the LwM2M wakaama library to the latest version.

[FWUpdate] Add a feature for firmware update.

[LTE] Fix a probelm where the example lte_awsiot could not reconnect to LTE after failing to connect to the AWS IoT Core server.

[libjpeg] Fix an Issues #301.

[FileSystem] Fix an issue of file corruption when updating an opened file with truncate mode on SPI-Flash filesystem SmartFS.

[LTE] Fix an example (lte_awsiot) that connects to AWS IoT. (Thanks to @shixuejun-neusoft)

[SMS] Add examples for sending and receiving SMS (sms_send / sms_recv).

[WebSocket] Add an example using GMO Coin’s Public API (websocket_gmocoin).

[WebSocket] Add an example using bitbank’s Public API (websocket_bitbank).

[DNN] Add an NNB model file generated by Neural Network Console to the example (dnnrt_lenet).

[Network] Add LwM2M objects to control Spresense to example (lte_lwm2m).

Feature enhancements are available

Release new tool for LTE firmware update.

[LTE] Add API for LTE firmware update.

[LTE] Fix an issue that caused an error to be returned even if the connection was successful in TLS connections on webclient_perform function.

[Tool] Fix an issue that loadable ELF doesn’t work properly in Windows MSYS2 build environment.

[LTE] Fix an example (lte_azureiot) that connects to Azure IoT Hub. (Thanks to @takumiando)

[Tool] Add support for aarch64 to the installation script (install-tools.sh). (Thanks to @hlsony)

[LTE] Add an example (lte_fwupdate) for LTE firmware update.

The kernel of the Spresense SDK has been updated to NuttX 10.1.0.

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

The cross compiler has been updated to gcc version 9.2.1.

[NuttX] The NuttX kernel has been updated from NuttX 8.2 to NuttX 10.1.0. It supports for new drivers and features.

[GNSS] Improve the reception performance of L1S signal from QZSS Michibiki.

[DigitalFilter] Add edge detection filter.

[Audio] Add feature/audio_recognizer. This makes it easier to add the Recognizer feature to other features.

[AI] Add a wrapper library TFLMRT to make TensorFlow Lite Micro easier to use.

[LTE] Memory usage when using LTE function has been reduced by 40% (48KB).

[LTE] Change API arguments so that the size of variable length arguments used in some APIs can be specified.

[Audio] Improve readability of example/audio_recorder sample code.

Compatibility of application Makefiles.

Handling of uint32_t and int32_t

Regarding configs.

Feature enhancements are available.

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

[HostIF] Support new feature to communicate via I2C/SPI slave with external host device.

[DigitalFilter] Add digital filter library. Within this library, the following two filters have been added.

[Audio] Fix an issue where a warning would occur on WAV playback with 96 kHz(sampling-rate) and 24 bits(sample-bit-length).

[Image] Add support for error handling using setjmp/longjmp in the libjpeg sample (jpeg_decorder).

[FileSystem] Enhance recoverability from power failure during adding file for SmartFS file system on SPI-Flash.

[LTE] Improve network connection stability with LTE

[Power] Add an example code (power_sleep) of waking up from power-saving sleep mode (Deep/Cold) by RTC alarm.

[DigitalFilter] Add an example code (fir_filter) of envelope processing using the H function, which is used to analyze impulse signals associated with machine degradation.

Feature enhancements are available.

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

[AI] Google’s TensorFlow Lite for Microcontrollers is now available, and the micro_speech / person_detection samples can be run.

[OS] Enabled the FAT file system timestamp feature in the default configuration.

[Ether] Support usersocket for WIZnet’s W5500.

[MPCOMM] Added a framework for creating programs that run cooperatively on multiple subcores in ASMP.

[Video] Added support for Scene select on V4L2.

[Camera] The maximum exposure time of the camera has been extended from 1 second to 2.1 seconds, the maximum value of ISX012.

[LTE] Fixed an issue where TLS connections to domains registered for both IPv4 and IPv6 were not possible when the IP type was set to IPv6 Only in the access point settings.

[LTE] Fixed an issue that caused Assert to occur in rare cases during data communication in LTE.

[LTE] Fixed an issue where the recvfrom()/sendto() API sometime would not return rarely when the LTE Daemon debug logging was enabled.

[libjpeg] Fixed CVE-2020-14153.

[LTE/GNSS] Added a sample for uploading GNSS positioning results to AWS IoT Core.

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 入门指南（CLI版）.

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.