A lot of support has been added to Atmel SAMV7x & E7x series.
A new type of peripheral (flash-ext) has been added to the HAL & shares the same structures as the basic embedded flash HAL.
Added a NOLINT parameter in every init to allow clang-tidy static analysis (more to come)
Some minor and not-so-minor bugfixes on the 8051 series.
A new top include file has been added to release some maintenace pressure on ports (arch/include/picoRTOS_core.h).
Reset the F_POSTPONED flag on every tick to avoid the very unlikely case where a postponed task was preempted & the flag still being set for the next cycle (minor).
The rest are mostly drivers for stm32h7xx & Bosch MCAN.
Assert system has been made cleaner (hopefully) by adding picoRTOS_dbgbreak() and picoRTOS_fatal() calls & enforcing through splint the side-effect free nature of asserts.
Usual minor fixes in drivers, especially stm32h7-related.
Important update. A new picoRTOS_postpone() call has been added for FIFO scheduling support.
A new 'make deploy' target has been added to allow standalone deployment of picoRTOS in a sub-directory (makes debug easier on sdcc targets & allows better integration in IDEs).
The I2C/TWI API has been updated with some flags. Some drivers have been updated correctly, some not. Time will tell if it's the right way.
The rest is mostly support for the Nuvoton NuMicro/N76E003/MS51 series & upgrade of the existing components.
This is a very minor update, we just fixed NXP's FlexCAN driver & added a new Random Number Generator runtime API.
As static analysis evolves (especially cppcheck), what was acceptable isn't anymore, so a lot of 'const' keywords had to be put everywhere to make things more compliant. Not everything can be fixed in that regard, as APIs might be used differently in different drivers, leading to style warnings.
This release will be the last of the v1.9.x series, as the system will (lightly) evolve in v1.10.x to add FIFO scheduling options.
Minor update, support for new architecture:
- STM8: support for STM8Sx003
- STM8S minimal drivers (clock, mux, gpio) + demo, staging
A few fixes have been made to the build system, mainly to accommodate for newer versions of the gcc compiler, thanks to David J. Fiddes
ATTiny414 machine has been added, courtesy of Platima.
More tests & static analysis have been added in the corresponding directory & code has been made more compliant with the newer versions of the tools in the meantime.
Major update, experimental support for NXP HC(S)08 architecture.
Added a perl preprocessor to generate the .S files from C header file on SDCC-related builds.
Which leads to minor updates to 8051 port, as .inc files were not needed anymore.
A few drivers have been developed for the S08PTxx series to allow tests in staging directory.
Minor update, support for a new architecture:
- RISC-V: support for RV32EC + WCH CH32V003
- CH32V003 minimal drivers (clock, mux, gpio) + demo
This is a minor update, but kinda major in some ways.
- 8051: improved architecture + clock management system(s)
- AVR: total refactoring of the ports (merged ATMegza & ATTiny) + associated demos
- STM32F10xxx: support for a new ARMV7-M machine + minimal drivers (clock, mux, gpio)
- STM32F401x: support for new ARMv7e-M machine + minimal drivers (clock)
- Refactoring of DMA setup in existing SPI drivers (to match +irqdriven naming conventions)
The biggest improvement of this release is the support for the Intel 8051 / MCS51 family of microcontrollers and the associated support for SDCC as a compiler.
Code for ucsim_51, Nuvoton n76e003 & Cypress/Infineon Cy7c6801xA chips is provided as an example. This is still incomplete, though, as no driver (except for the clocks) has been provided, only the kernel runs.
Major fixes have been added to the SMP ports (main cores are now waiting until the auxiliary ones are idling before running the scheduler). Chips that do not support bus snooping are now using the mutexes properly.
Finally, 8bits int types have been used whenever possible on 8bit architectures (AVR & 8051).
The HAL & associated drivers have been modified to remove more booleans and make the structure inits more human-readable.
NXP Devkit-MPC5748G has been unstaged after MUX, GPIO, ADC, PWM, FlexCAN, UART (LinFlexD), SPI/DSPI & clock drivbers has been roughly tested.
NXP MPC5775B/E demo has been improved to include drivers from MPC574xx series. DMA, GPIO, MUX & clock have been unstaged, too.
Check & distcheck ahve been run & improved (especially the MIPS-related ones).
Two new ports have been added: VLE PowerPCs e200z4 & e200z7.
Both support single core & dual core SMP configurations.
The corresponding demos & drivers have been updated to the current APIs & stay for the most part totally untested. This will be the next step.
The main new feature in this release is the management of the CPU clock frequency inside the ports, which allow new API functions like arch_delay_us with decent accuracy.
Clock drivers are responsible for setting this correctly & have been updated. From the user's perspective it's one less parameter to worry about (except for the AVR architecture).
Tasks statistics have been improved without adding too much overhead and in was a real PITA ! I hope it's the final version.
This version adds support for Renesas RA4 series in general & Arduino Uno R4 Minima in particular.
ADC, Clocks, GPIOs, Multiplexing, PWMs, SPIs & UARTs are supported in quite a minimalistic way.
TWI/I2C needs further testing (code is available in the staging tree). Other peripherals are not supported yet.
On the minor side, the auto-generated config can now be included simply by including picoRTOS.h
This is a major revision that brings up a brand new graphical configuration menu (GUI), heavily inspired by the Linux/U-boot/Buildroot "make menuconfig".
OpenPicoRTOS is now more than an OS. It is an OS AND a build system AND a code checking system, too.
Migrating to OpenPicoRTOS has been made easier than ever (hopefully).
Some changes have been made to the port API & the main API, especially regarding asserts, that have been made ISO-C compliant to accommodate for the now default gcc -pedantic mode.
Cross-dependencies between the ports and the schedulers have been totally removed.
All drivers have benn migrated already & some have been improved, especially the SAM3x/Arduino Due I2C & CAN.
Some work still needs to be done on the PowerPC chips, as we are still waiting for some replacements after the last ones have been stolen.
Support for ARM Cortex-M7 has been added, as well as some support for the stm32h742/750 series provided by DevEBox for its cheap chinese eval boards.
Some refactoring has been done on the ARM linker files, but it's still not 100% satisfying.
Mostly, the AmigaBall LCD demo, courtesy of slmisc on github. This demo has allowed to put a series of board to a real test & improve on the DMA for most of them (except c2000, which is a pain anyway).
A more satisfying way to manage caches has been found, hopefully.
PowerPC platforms have been added to staging and deserve a huge amount of testing.
The main change in this release is the support for RISC-V RV32IMAC architectures. This has been tested on the GD32VF103 (Bumblebee core) & 2 demos are provided: one for the peripherals and one for fun (LCD).
A bunch of drivers has been partially tested & moved out of staging for this device.
A new concept has been added, architecture drivers. This is mostly for interrupt controllers.
An example is provided as the support for intc-pic32mx in the mips32/m51xx architecture directory.
Raspberry Pico demos (single-core and SMP) have been merged to avoid too much code duplication.
Tests have been improved, now the static analysis happens on all available devices, not only the architectures.
OpenPicoRTOS now supports software cache synchronization through new interfaces in the ports new arch_invalidate_dcache() and arch_flush_dcache(). These have not effect on CPUs with no cache.
Casting types in drivers inits have been deemed unnecessary & misleading and have been converted to integers to allow direct use of defines in picoRTOS_device.h.
Some small bug fixes have been added to the mix, as well as some minor structural improvements in the schedulers, especially syscalls.
OpenPicoRTOS is now a standalone kernel that only needs a toolchain to be
built.
This allows it to run from flash or from ram depending on the level of
performance your project requires.
This makes ports a little more challenging in the beginning but gives then a lot
of freedom at runtime.
A complete static analysis with splint & cppcheck has been performed on the code to ensure it was free of errors & some minor bugfixes have followed.
Two new drivers for flash controllers have been added :
- SAMD/E5x
- PIC32Mx
The flash HAL is still experimental and probably requires some improvements but at least the mechanics could be tested, finally.
arch/avr/avr5 & arch/avr/avr6 have been merged in a more convenient arch/avr/avrmega
A new port is available: arch/c2000/c28x. A demo for the launchxl-f28379d eval board is provided to test the scheduler & the drivers.
Finally, a staging tree has been added. It mimics the main tree but only contains experimental features / drivers / ports that could not be tested for one reason or the other, but fulfil the code safety requirements (2 static analysers + build with no errors or warnings).
A RISC-V (RV32IMAC) port is staging, alongside general support for the GigaDevice GD32VF103 microcontroller.
Round-robin scheduling ! This is the new feature provided in the v1.7.x series. Works in SMP & single core modes.
Some drivers have been moved around:
- spi-pl022 -> spi-arm_pl022
- uart-pl011 -> uart-arm_pl011
- gpio-sio -> gpio-rp2040_sio
Asserts have changed a bit for testing purposes, you get now:
- assert_fatal (returns)
- assert_void (only in debug)
- assert_void_fatal (doesn't return)
Unit tests have been added to ensure single-core & SMP versions get the same behaviour.
The system has been partially rewritten to prepare the field for the future support of round-robin scheduling. The PIC32MZ series support has been improved, in the scheduler as well as the drivers. the can_accept() HAL call and the associated drivers have been improved (no more exceptions for 0).
The following drivers have been added:
- Watchdog for SAMD5x/E5x series
- ADC for PIC32Mx series
- TWI/I2C for PIC32Mx (untested)
- CAN for PIC32Mx (untested)
Support has been added for the following architectures:
- ARM Cortex M4/F
- MIPS M51xx
This support is incomplete as far as the MIPS is concerned (no support for FPU or DSP yet). This is on purpose, as the split between architecture ankd BSP is not completely decided yet.
The following devices are now at least partially supported:
- Atmel SAMD5x/E5x
- Atmel TinyAVR ATtiny1607
- PIC32MZ-EF
Basic drivers are provided for these platforms, SAMD5x and ATtiny have good support, PIC32 is fairly incomplete.
Support has been added for Atmel tinyAVR 1-series. Some drivers and test demo have been added to the project.
AVR assembly ports have been simplified to the extreme using .rept macros
A shortcut macro for stacks has been added: PICORTOS_STACK_COUNT(x)
Queues are now fully thread-safe.
A lot ! picoRTOS now offers a HAL and a bunch of experimental drivers for all supported platforms.
Demos have been updated to reflect that and show the power of this new code-level HAL.
picoRTOS is back ! Version 1.5.3 has seen the project being retired for professional use, so this one is a brand new architecture that has been re-written from the ground up.
Unfortunately older users of picoRTOS on PowerPC and C2000 cannot update because despite similar user interfaces, the port API has been fundamentally rewritten and is not compatible anymore.
Anyway, some features left us, but new features have been added, like "dynamic" priority assignment, syscalls, queues and much more.
picoRTOS is now safer, faster and more complete, enjoy !