NuttX-9.0.0

This is the first release of NuttX as Apache NuttX (Incubating) and represents our first major milestone as a Podling of the Apache Software Foundation’s Incubator. This release is the culmination of nearly 6 months of hard work and includes several new architectures and drivers, and numerous improvements and bug fixes to the core RTOS, drivers, and networking subsystems.

• Major Changes to Core OS

• Bugfixes

• nxsem_wait_uninterruptible() now returns if the task is canceled.

• Fix a bug in pthread_condwait() that was improperly re-initializing the mutex.

• In sched_setpriority(), fix functions called inside a DEBUGASSERT that were eliminated when assertions are disable

• Compatibility Concerns

• The configuration option CONFIG_CAN_PASS_STRUCT is now removed. Previously, it was used (at the cost of breaking standards support) to support older versions of the SDCC compiler that couldn’t pass structs/unions as functions’ parameters. A newer version of the compiler has resolved the issue.

• Major Changes to Build System

• Add a post-build function that allows extending the build with CPU/board-specific logic.

• Add build tools to simplify ZDS-II tool usage.

• mkexport.sh: Deal with ARCHSCRIPT containing multiple files.

• Various nxstyle improvements.

• Architectural Support

• New architecture support

• Add support for RISCV-64

• Add support for x86_64 (tested on QEMU)

• Add support for ELF64

• Add a port to the NUCLEO-F429ZI board

• Add support for the STM32H747I-DISCO board

• Add Z20X board support and bootloader to upload code from the W25 flash to SRAM

• Add initial support for Litex with softcore CPU VexRiscV SoC

• Add support for the Digilent ARTY_A7 board to test the Litex port

• Added initial support for Sipeed Maix Bit board with Kendryte K210 processor

• New architectural support: ez80f92

• Flat address x86_64 port of NuttX

• Support to run NuttX on ESP32 QEMU

• Initial support for Sipeed Maix Bit board with Kendryte K210 processor

• Add initial support for Kendryte K210 processor in SMP mode

• NXP S32K11x (Cortex-M0+) and S32K14x (Cortext-M4F): Add support for NXP automotive boards.

• XMC 4700 (Cortex-M4F)

• Architectures with significant improvements

• ESP32 loadable modules support

• i.MX RT: FLEXIO clock config logic.

• Fix the clock configuration for the i.MX RT family

• i.MX RT: Add ability to run from OCRAM

• SAMA5D27 peripheral support - USB Host working

• z20x: Add W25 bootloader

• i.MX RT: Add USB Device support

• STM32, STM32F7, STM32H7 add SPI DMATHRESHOLD

• Improve the simulator timer

• 64-bit modules on macOS simulator

• z20x: Add XTP2046 SPI support; add timer support

• RX65N RTC Driver added

• NXP Freedom K28F Board SD-Card support

• STM32H7: support SDRAM via FMC peripheral

• LM3S6965-ek: Add PROTECTED build support

• STM32H7: Added IWDG and WWDG, power management (sleep/stop/standby), WKUP pin configuration

• SAMV71: Add read UID implementation and move flash functions to RAM

• i.MX RT: Fix interrupts storm (serial & I2C)

• Various fixes and cosmetic changes to the CxD56xx architecture

• Fix SiFive FE310 related code (comments, improve serial irq handling, initial int status)

• Implement QSPI for STM32H7

• Improvements for the nRF52 port: I2C, SPI, GPIO support

• Updates for LPC17xx/40xx serial

• Adds basic support for Microchip SAM E54 Xplained Pro board

• Adds an Ethernet driver for the SAME5x family (based on the SAMA5 GMAC driver)

• Add CDC ECM Ethernet over USB 2.0 High Speed (tested on SAMA5D36-Xplained board)

• Simulator: Reimplement simulator uart on top of serial driver framework

• NXP S32K1XX peripheral clock fixes

• Fix syscall stack alignment on armv7-m

• Fix flash_erase(page) when page >= 256 for STM32L4 family

• Add partial support for the NETLINK poll() operation.

• Add serial DMA support for STM32F7

• Add AM335x Clock Configuration

• Add I2C support for AM335x

• Add configuration to fine tune LPI2C Timeout for iMXRT

• Add CAN support to AM335x

• Add I2C support to STM32F0/L0/G0

• Kinetis LPC SDCard improvements

• Replace the busy polling with work_queue in the ethernet driver of simulator

• Fix Xtensa’s SMP support to follow same logic from other SMP archs

• PIC32MZ: SPI transfers can be configured to use DMA.

• PIC32MZ: Implement cache operations.

• Driver Support

• New drivers

• New driver for the ADS7828 I2C analog to digital converter

• driver/ioexpander: New driver for PCA9538 I2C I/O expander

• New driver type for battery monitor ICs.

• Driver for the BQ769x0 battery monitor IC.

• Add Support for Quectel EC20 4G LTE Module USB CDC/ACM

• Add QSPI-based Winbond NOR FLASH driver

• Drivers with significant improvements

• Update all the drivers to check return value of nxsem_wait_uninterruptible().

• MCP9844 shutdown mode support

• fcntl: add O_CLOEXEC flag, add O_CLOEXEC/FD_CLOEXEC support

• CDC-ECM Ethernet over USB 2.0 HS

• smartfs improvements: Handling of duplicate sectors, support fsck to check and repair the smartfs file system, and recover SPI Flash from initial error state.

• Various fixes for USBDEV driver: Remove unnecessary reset logic, fix descriptor type mismatch when dual speed is enabled, fix invalid/unsupported command processing, and fix string ID calculation.

• Handle size zero in umm_malloc.c and umm_realloc.c, which causes a system freeze in kernel mode.

• Fixed compilation issue with poll fds notification.

• Report POLLHUP and POLLERR in ‘revents’ regardless the requested ‘events’ set.

• Networking

• Telnet: Fix/Refine CTRL+C to work on telnet

• TCP: Fix of faulty TCP sequence increments

• netdb: Fix netdb to query IPv4 and IPv6 addresses regardless the server address type

• Netlink sockets may be set to non-blocking

• Improve TUN and SLIP, refine Control+C Handling in Telnet

• Sockets: Add socket MSG_DONTWAIT support

• Network Loopback Driver: Add a configuration option to control packet size

• Network IOCTLs: Add FIONBIO network IOCTL support

• NFS: Support IPv4 and TCP

• Sockets: Add IP and TCP socket options needed by iperf3

• Netlink: Add support for asynchronous Netlink responses

• TCP: Monitor TCP_POLL/TCP_NEWDATA/TCP_BACKLOG per the request like UDP counterpart

• TCP: Minor design improvement to TCP delayed ACKs

• DNS IPv4/IPv6 Dual Host Support: When IPv4/IPv6 Dual Stack is enabled, queries both types of addresses regardless of whether the DNS server is accessed via IPv4 or IPv6. As a result, getaddrinfo() may return a mixed (IPv4/IPv6) address list.

• Applications

• Improvements

• Extend netutils and netinit to work with only Netlink sockets enabled

• Add getprime program to check multi-thread performance

• Improve zmodem send performance

• Add simple HTS221, LSM303 and LSM6DSL examples

• Improve to gs2200m wiki performance

• Improve telnet server and enable it to listen on both IPv4 and IPv6

• Improve ntpclient logic

• Improve wapi to save configuration to file system

• Improve wapi to skip associate if ssid is invalid

• Improve cmd_nfsmount to use IPv4 and IPv6

• Improve ostest for SMP and non-SMP configurations

• Improve UDP to avoid using standard symbols

• Improve dhcpd to include configurable timeout and retry count

• Bugfixes

• Correct format when printing ARP tablet entries

• Ensure /bin/ping and ping work at the same time

• Correct backward conditional logic in dhcpd_leaseexpired()

• Fix several problems on ftpd

• Fix dhcpd issue reported on Issue #17

• Fix sendmail example to run on a local SMTP server

• Fix buffer overflow on netlib

• Fix compile errors in loopback mode of the tcpblaster

• Fix stack corruption in ELF task test

• Fix errors in NoBlockRecv and BlockRecv tests of usrsocktest

• Fix ipforward IP Header issue for IPv4

• Fix wrongly swapped parity options of CU program

• Fix slcd to avoid using priv->fd before initializing it

• Fix (tcp, udp)blaster to build on macOS

• Correct the buffer type of base64 program