diff --git a/ChangeLog b/ChangeLog index 5333449b2e..3653cd3ec4 100755 --- a/ChangeLog +++ b/ChangeLog @@ -3130,7 +3130,7 @@ point numbers. * lib/stdio/lib_libdtoa.c and lib_libvsprintf.c: Correct some floating point options. - * arch/arm/lpc43xx/lpc32_usb0dev.c: Add framework for development of + * arch/arm/lpc43xx/lpc43_usb0dev.c: Add framework for development of an USB0, device-side driver for the LPC43XX. The initial check-in, however, is simply for the LPC31xx driver with name changes. The LPC31xx has the same USB IP, but will require some additional initialization @@ -4440,7 +4440,7 @@ * binfmt/binfmt_execmodule.c: Here is a place where I forget to update the call to sched_releasetcb() to pass the thread type as the second parameter (2013-03-23). - * arch/arm/src/lm, kinetis, lpc32, and nuc1xx: Add kernel build + * arch/arm/src/lm, kinetis, lpc43, and nuc1xx: Add kernel build support to all ARMv7-M and ARMv6-M chips. There are no configurations in place to to verify these additions! (2013-03-24). @@ -10964,7 +10964,7 @@ (2015-09-09). * configs/nucleo-f303re: Support for the STMicro Nucleo F303RE board from Paul Alexander Patience (2015-09-10). - * arch/arm/src/lpc43xx/lpc32_ehci.c and .h: LPC43xx EHCI driver from + * arch/arm/src/lpc43xx/lpc43_ehci.c and .h: LPC43xx EHCI driver from Ilya Averyanov (2015-09-10). * ARMv7-M, all "lazy" interrupt stack logic. Assembly instruction that fetches the saved value is incorrect; replace with more @@ -12348,7 +12348,7 @@ adds DEBUGASSERT for invalid geometry and additional memory debug logic. Also fixes the dangling pointer on error bug. From Ken Pettit (2016-07-14). - * arch/arm/src/lpc32xx: Extend LPC43xx EMC code to support SDRAM on a + * arch/arm/src/lpc43xx: Extend LPC43xx EMC code to support SDRAM on a dynamic memory interface. From Vytautas Lukenskas (2016-07-19). * arch/sim/src: Add the simulated QSPI (N25Q) flash to the simulation and modify sim up_spiflash.c to enable it to run with different MTD @@ -12847,16 +12847,16 @@ (2016-10-19). * libc/locale: Allows c++ code to compile with or without CONFIG_LIBC_LOCALE and will generate a link error if CONFIG_LIBC_LOCALE - is not defined and setlocale is referneced. With CONFIG_LIBC_LOCALE + is not defined and setlocale is referenced. With CONFIG_LIBC_LOCALE defined setlocale will act as if MB string is not supported and return "C" for POSIX. C and "". From David Sidrane (2016-10-19). - * Add vectors for interrupt levels 2-6 (2016-10-20). - * strtof: Add strtof() as simply a copy of strtod with types and + * Xtensa ESP32: Add vectors for interrupt levels 2-6 (2016-10-20). + * strtof(): Add strtof() as simply a copy of strtod with types and limits changed (2016-10-20). * arch/arm/src/stm32v7: Register the watchdog device at the configured device path CONFIG_WATCHDOG_DEVPATH vs. hard-coded /dev/wdt. From Frank Benkert (2016-10-21). - * configs/*/defdonf The buttons example was changed to archbuttons. As + * configs/*/defconfig: The buttons example was changed to archbuttons. As a result all of the button configurations are broken and need some renaming in the defconfig files. Noted by Frank Berkert (2016-10-21). * configs/stm32f103-minimum: Add support to PWM on STM32F103-Minimum @@ -12912,7 +12912,7 @@ found in the F4. From David Sidrane (2016-10-26). * arch/arm/src/stm32f7: stm32f76xx77xx_pinmap.h Missed one. From David Sidrane (2016-10-26). - * LPC32xx serial: Fix a typo in ioctl TIOCSRS485 ioctl. From Vytautas + * LPC43xx serial: Fix a typo in ioctl TIOCSRS485 ioctl. From Vytautas Lukenskas (2016-10-27). * sched/clock: Correct clock initialization. The correct range for the month is 0-11 but is entered as 1-12 in the .config file @@ -12922,7 +12922,7 @@ * sched/Kconfig: Add ranges to START_YEAR, MONTH, and DAY (2016-10-28). * configs/nucleo-f303re: Add STM32 F303RE hello configuration; remove duplicate setting from board.h. From Marc Rechté (2016-10-18). - * arch/arm/src/lpc32xx: Restore RS485 mode on serial port open (if + * arch/arm/src/lpc43xx: Restore RS485 mode on serial port open (if RS485 is enabled via menuconfig). From Vytautas Lukenskas (2016-10-28). * arch/arm/src/stm32f7: otgdev fixed typo. From David Sidrane (2016-10-28). @@ -13101,7 +13101,7 @@ argument so that there can be additional usage. From Sebastien Lorquet (2016-11-17). * All timer lower half drivers. Port Sebastien's changes to all all - other implementations of the timer lower half. Very many just and + other implementations of the timer lower half. Many changes and untested. Expect some problems. (2016-11-17). * sched/irq: irq_csection() has a bad assumption in the SMP case. It assumed that the state of certain variables. That was true on entry @@ -13237,7 +13237,7 @@ and execute "make" it will not detect that Pin.cxx was modified. I think there is some other place I should modify, but I didn't find it. From Alan Carvalho de Assis (2016-11-27). - * ARMv7-A/i.MX6 SMP: Move SMP coherernt cache setup to earlier in + * ARMv7-A/i.MX6 SMP: Move SMP coherent cache setup to earlier in initialization of CPUn, n>0 (2016-11-27). * ARMv7 GIC: SGIs are non-maskable but go through the same path as other, maskable interrupts. Added logic to serialize SGI processing when @@ -13378,7 +13378,7 @@ just how small you could get NuttX, but otherwise it was not useful: (1) the NSH code violated the OS interface layer by callup up_getc and up_putc directly, and (2) while waiting for character input, NSH would - call up_getc() which would hog all of the CPU. NOt a reasonably + call up_getc() which would hog all of the CPU. Not a reasonable solution other than as a proof of concept (2016-12-13). * Calypso Boards: Remove all Calypso board configurations (2016-12-13). * Calypso: Remove Calypso architecture support and support for Calypso diff --git a/ReleaseNotes b/ReleaseNotes index 18b20f8b14..e7d50a4053 100644 --- a/ReleaseNotes +++ b/ReleaseNotes @@ -12294,3 +12294,794 @@ detailed bugfix information): - apps/examples/oneshot: If the requested delay is > max_delay, then break the delay up into several pieces. + +NuttX-7.19 Release Notes +------------------------ + +The 119th release of NuttX, Version 7.19, was made on December 26, 2016, +and is available for download from the Bitbucket.org website. Note +that release consists of two tarballs: nuttx-7.19.tar.gz and +apps-7.19.tar.gz. These are available from: + + https://bitbucket.org/nuttx/nuttx/downloads + https://bitbucket.org/nuttx/apps/downloads + +Both may be needed (see the top-level nuttx/README.txt file for build +information). + +Additional new features and extended functionality: + + * Core OS: + + - sched/semaphore, sched/phread/, libc/semaphore, libc/pthread: Add + pthread_mutexattr_get/set_protocol and non-standard + sem_get/set_protocol. These may use to enable or disable priority + inheritance on a single semaphore. + - Spinlocks: Added capability to provide architecture-specific memory + barriers. + - SMP: Add spin_trylock(). Use this in conditions where other CPUs need + to stopped but we cannot call enter_critical_section(). + - sched note: Extend OS instrumentation to include some SMP events. + Also add spinlock instrumentation; In SMP configurations, add a + filter mask to log only notes from certain CPUs. + - sched note: Permit spinlock and critical section notes in in-memory + buffer iff sched_not_get() interfaces is disabled. + - sched note: Add additional note to see if/when CPU is started in SMP + mode. + - sched note: Record ID enumeration now results on constant values; ID + values do not change with configuration. This makes writing post-processing software much easier. + - boardctl: Add new boardctl() command, BOARDIOC_NX_START, to start the + NX server as a kernel thread. + - pthreads: Add pthread_cleanup_push() and pthread_cleanup_pop(). + - pthreads: Added pthread_setcanceltype() and pthread_testcancel(). + - pthreads: Add support for cancellation points. + - task_delete() now obeys all cancellation point semantics. + - Add task_setcancelstate(), task_setcanceltype(), and + task_testcancel(). These are non-standard interfaces analogous to the + correponding pthread_ interfaces that provide cancellation controls + for tasks. + + * Graphics/Display Drivers: + + - boardctl: Add new boardctl() command, BOARDIOC_NX_START, to start the + NX server as a kernel thread. + + * Networking/Network Drivers: + + - Network drivers: Add option to use low-priority work queue to all + Ethernet and MAC level drivers. + - Network Drivers: Adapt all Ethernet (and other MAC) drivers to work + as though CONFIG_NET_MULTIBUFFER were set. Remove all references to + CONFIG_NET_MULTIBUFFER. + - Eliminate CONFIG_NO_NOINTS. There is no longer any support for + interrupt level processing of the network stack. Lots of files changed. + + * Other Common Device Drivers: + + - Vishay VEML6070: Add Vishay VEML6070 driver. From Alan Carvalho de + Assis. + + * ARMv7-A + + - ARMv7-A/i.MX6: Add SCU register definitions. Add some controls to + enable SMP cache coherency in SMP mode. Makes no difference, however + -- cache still incoherent on i.MX6. + - ARMv7 GIC: SGIs are non-maskable but go through the same path as + other, maskable interrupts. Added logic to serialize SGI processing + when necessary. + + * Atmel SAM3/4: + + - SAM3/4: Add SMP support for the dual-core SAM4CM. From Masayuki + Ishikawa. + + * Atmel SAM3/4 Drivers: + + - Add support for the SAM5CMP-DB board. From Masayuki Ishikawa. + + * Atmel SAM3/4 Boards: + + - SAM4CMP-DB: Add support for the Atmel SAM4CMP-DB board running in an + SMP configuration. From Masayuki Ishikawa. + - SAM4CMP-DB: Add hooks to auto-mount the procfs file system on startup + in board bring-up logic. + + * Atmel SAMV7 Drivers: + + - SAMv7: Register the watchdog device at the configured device path + CONFIG_WATCHDOG_DEVPATH vs. hard-coded /dev/wdt. From Frank Benkert. + + * Calypso + + - Calyps: Remove all Calypso board configurations. Remove Calypso + architecture support and support for Calypso SERCOMM driver. + + * Misoc LM32: + + - Misoc LM32: Adds basic support for the Misoc procoessors and the LM32 + in particular. From Ramtin Amin. + - Misoc LM32: Add signal handling logic. From Ramtin Amin. + - Misoc LM32: Add logic to flush/invalidate caches. From Ramtin Amin. + + * Misoc LM32 Drivers: + + - Misoc LM32 Serial: Add interrupting Misoc serial driver. From Ramtin + Amin. + - Misoc LM32 Timer: Add timer driver. From Ramtin Amin. + - Misoc LM32: Add Misoc Ethernet driver From Ramtin Amin. + + * Misoc LM32 Boards: + + - Misoc LM32 Qemu: Board support for testing Misoc LM32 with Qemu. From + Ramtin Amin. + - Misoc LM32 Qemu: Integrate network support into configs/misoc/hello. + From Ramtin Amin. + - Misoc LM32 Qemu: Remove configs/misoc/include/generated directory. I + suppose the the intent now is that this is a symbolic link? DANGER! + This means that you cannot compile this code with first generating + these files a providing a symbolic link to this location! There is a + sample directory containing generated sources. This is really only + useful for performing test builds. You really must generate the Misoc + architecture for a real-life build. From Ramtin Amin. + + * NXP Freescale i.MX6 Drivers: + + - i.MX6: Add an untested SPI driver taken directly from the i.MX1 port. + + * NXP Freescale Kinetis: + + - Kinetis: Added missing headers. Kinetis broke out SPI to + kinetis/kinetis_spi.h. Broke out DMA to use the modern Nuttx chip + inclusion - still STUBS. Add Kinetis support for ARMV7-M Common + Vector and FPU. Allow CONFIG_ARMV7M_CMNVECTOR, + CONFIG_STACK_COLORATION, CONFIG_ARCH_FPU. Fix i2c driver offset + swapped for value in kinetis_i2c_putreg. From David Sidrane. + + * NXP Freescale Kinetis Drivers: + + - Kinetis: Add UID Unique ID. From Neil Hancock. + + * NXP Freescale Kinetis Boards: + + - Freedom-K64F board: Add support for UID Unique ID. From Neil Hancock. + + * NXP Freescale LPC17xx Boards: + + - Olimex-LPC1766-STK: Enable procfs in NSH configuration. Automount + /proc on startup. + + * NXP Freescale LPC43xx Drivers: + + - LPC43xx: Add timer driver: From Alan Carvalho de Assis. + - LPC43xx GPDMA driver: The GPDMA block is basically the same as the + LPC17xx. Only the clock configuration is different and LPC43xx has + four different DMA request sources, where LPC17xx has only two. From + Alan Carvalho de Assis. + + * NXP Freescale LPC43xx Boards: + + - Bambino 200E: Add basic support to Micromint Bambino 200E board. + This includes contributions from Jim Wolfman. From Alan Carvalho de + Assis. + - Bambino 200E: Add support for timer driver. From Alan Carvalho de + Assis. + + * RGMP: + + - Remove RGMP and RGMP drivers. + + * RISC-V: + + - RISC-V: Add support for the RISC-V architecture and + configs/nr5m100-nexys4 board. The board support on this is pretty + thin, but it seems like maybe a good idea to get the base RISC-V stuff + in since there are people interested in it. From Ken Pettit. + + * STMicro STM32 Drivers: + + - STM32 F3: Implemention of the STM32 F37xx SDADC module. There are + also changes to ADC, DAC modules. SDADC has only been tested in DMA + mode and does not support external TIMER triggers. This is a work in + progress. From Marc Rechté. + - STM32 F3: Add PWM driver support for STMF37xx. The changes have been + tested successfuly for TIM4 and TIM17 (different IPs). From Marc + Rechté. + - STM32 F4: Support oversampling by 8 for the STM32 F4. From David + Sidrane. + - STM32 F4: Added Timers 2-5 and control of SAI and I2S PLLs. Added + support for stmf469 SAI and I2S PLL configuration and STM446 fixes. + From David Sidrane. + - STM32 F4: Expanded OTGFS support to stm32F469 and stm32f446. Added + missing bit definitions, Used stm32F469 and stm32f446 bit + definitions, Removed unsed header file. From David Sidrane. + - STM32 F4: Allow dma in 1 bit mode in STM32F4xxx. From David Sidrane. + - STM32 F7: Allow the config to override the clock edge setting. From + David Sidrane. + - STM32 L4: Support Complementary PWM outputs on STM32L4. From + Sebastien Lorquet. + - STM32 L4: Add implementation of dumpgpio for stm32l4, was required + for pwm debug. From Sebastien Lorquet. + + * STMicro STM32 Boards: + + - STM32F103 Minimum: Add button support. From Alan Carvalho de Assis. + - STM32F103 Minimum: Add support to PWM on STM32F103-Minimum board. + From Alan Carvalho de Assis. + - STM32F103 Minimum: Add RGB LED support on STM32F103 Minimum board. + From Alan Carvalho de Assis. + - STM32F103 Minimum: Add Vishay VEML6070 driver support to the + STM32F103-Minimum board. From Alan Carvalho de Assis. + - Nucleo-F303RE: Add STM32 F303RE hello configuration. From Marc + Rechté. + - Nucleo-L476: Support PWM testing on board Nucleo L476. From + Sebastien Lorquet. + - Nucleo L476: Add support for timers to Nucleo L476. From Sebastien + Lorquet. + - Hymini STM32v: Enable CONFIG_RTC in the hymini-stm32v/nsh2 + (kitchensink) config. From Maciej Wójcik. + - Olimex STM32-p407: Add support for the Olimex STM32 P407 board. + + * TI Tiva Drivers: + + - Tiva PWM: Support PWM_PULSECOUNT feature for TI tiva. From Young.Mu. + + * Xtensa/ESP32 + + - Xtensa ESP32: Basic architectural support for Xtensa processors and + the Expressif. ESP32 added. + - Xtensa ESP32: Add EXPERIMENTAL hooks to support lazy Xtensa + co-processor state restore in the future. + - Xtensa ESP32: Basic port is function in both single CPU and dual CPU + SMP configurations. There is an NSH configuration for each CPU + configuration. Outstanding issues include missing clock configuration + logic, missing partition tables to support correct configuration from + FLASH, and some serial driver pin configuration issues. + - Xtensa ESP32: Add stack checking logic. + + * Xtensa/ESP32 Boards: + + - ESP32 Core v2: Basic support for Expressif ESP32 Core v2 board + added. The initial release includes an NSH and an SMP test + configuration. + - ESP32 Core v2: Add configuration to support linking NuttX for + execution out of IRAM. + - ESP32 Core v2: Automatically mount /proc at start-up. + - ESP32 Core v2: Add an OS test to verify the port. + + * C Library/Header Files: + + - libc/locale: Add a dummy setlocale() function to avoid drawing the + function from newlib. Add clocale header file. + - include/locale.h: Modify locale.h to add localeconv() and lconv + structure. From Alan Carvalho de Assis. + - libc/locale: Allows c++ code to compile with or without + CONFIG_LIBC_LOCALE and will generate a link error if + CONFIG_LIBC_LOCALE is not defined and setlocale is referenced. With + CONFIG_LIBC_LOCALE defined setlocale will act as if MB string is not + supported and return "C" for POSIX. C and "". From David Sidrane. + - libc/wchar: Add wcslen, wmemchr, wmemcmp, wmemcpy wmemset, btowc, + mbrtowc, mbtowc, wcscmp, wcscoll, and wmemmove to NuttX. From Alan + Carvalho de Assis. + - libc/wctype: Add functions wcrtomb, wcslcpy, wcsxfrm, wctob, wctomb, + wctype, localeconv, strcoll, strxfrm, swctype, towlower, towupper and + wcsftime. Add wctype.h; Move lib_wctype.c to libc/wctype. From Alan + Carvalho de Assis. + - include/ctype.h : Add isblank() macro to ctype.h. From Alan Carvalho + de Assis. + - lic/stdlib: Add strtof() and strtold() as simply a copy of strtod + with types and limits changed. + - sscanf(): Use strtof() instead of strtod() if a short floating point + value was requested. The should help performance with MCUs with + 32-bit FPU support with some additional code size. + - sscanf(): Add scansets to the scanf function. Enabled + CONFIG_LIBC_SCANSET option. From Aleksandr Vyhovanec. + - include/inttypes.h: Add architecture-specific inttypes.h. From Paul + A. Patience. + - C Library: Allow option to enable IP address conversions even when + the IP address family is not supported. + + * Build/Configuration System: + + - The Smoothie project needs to compile C++ inside config/boardname/src/ + to use with High Priority Interruption, then I modified the board + configs Makefile to support it. It works fine for the first time + compilation, but if we execute "touch config/boardname/src/Pin.cxx" + and execute "make" it will not detect that Pin.cxx was modified. I + think there is some other place I should modify, but I didn't find + it. From Alan Carvalho de Assis. + + * Tools: + + - tools/: Add tools/showsize.sh. + + * NSH: apps/nshlib: + + - NSH: dd command will show statistics. From Masayuki Ishikawa. + + * Applications: apps/system: + + - apps/system/sched_note: Extend to include additions to instumentation + for SMP. + - apps/system/sched_note: Add support for spinlock notes. + - apps/system/sched_note: Add support for new scheduler instrumentation. + + * Platforms: apps/platform: + + - ESP32 Core v2: Add platform support for the ESP32 core v2 board. + - Olimex STM32-p407: Add platform support for the Olimex STM32 P407. + + * Graphics: apps/graphics + + - graphics/traveler/tcledit and libwld: Add an X11 Tcl/Tk tool that can + be used to edit Traveler world files. + - Graphics: Remove all NX server taks. Instead, call boardctl() to the + NX server kernel thread. + + * Applications: apps/examples: + + - examples/buttons: Add a new buttons example that uses the button + character driver instead of the architecture buttons directly. From + Alan Carvalho de Assis. + - examples/cctype: Add an example to verify cctype functions. + - Remove RGMP example. + - examples/ostest: Extend the pthread cancellation test to exercise + pthread_cleanup_push() (and pthread_cleanup_pop() indirectly via + pthread_cancel() and pthread_exit(). + - examples/ostest: enhance pthread cancellation test some. + +Works-In-Progress: + + * IEEE802.14.5/6LowPAN. Hooks and framework for this effort were + introduced in NuttX-7.15. Work has continued on this effort on + forks from the main repositories, albeit with many interruptions. + The completion of this wireless feature will postponed until at + least NuttX-7.20. + +Bugfixes. Only the most critical bugfixes are listed here (see the +ChangeLog for the complete list of bugfixes and for additional, more +detailed bugfix information): + + * Core OS: + + - sched/semaphore: Within the OS, when a thread obtains a semaphore + count it must call sem_addholder() if CONFIG_PRIORITY_INHERITANCE is + enabled. If a count is available, then sem_wait() calls + sem_addholder(), otherwise it waited for the semaphore and called + sem_addholder() when it eventually received the count. This caused a + problem when the thread calling sem_wait() was very low priority. + When it received the count, there may be higher priority threads + "hogging" the CPU that prevent the lower priority task from running + and, as a result, the sem_addholder() may be delayed indefinitely. + The fix was to have sem_post() call sem_addholder() just before + restarting the thread waiting for the semaphore count. This problem + was noted by Benix Vincent who also suggested the solution. + - Many files: Make sure that priority inheritance is not enabled for + semaphores whose primary use is signaling (vs locking of resources) by + calling sem_setprotocol(). + - sched/semaphore: sem_trywait() no longer modifies the errno value + UNLESS an error occurs. This allows these functions to be used + internally without clobbering the errno value. From Freddie Chopin. + - sched/clock: Correct clock initialization. The correct range for the + month is 0-11 but is entered as 1-12 in the .config file. Add ranges + to START_YEAR, MONTH, and DAY in sched/Kconfig. + - sched/clock: Correct calculation for the case of Tickless mode with a + 32-bit timer. In that case, the calculation was returning millisecond + accuracy. That is not good when the timer accuracy is < 1 msec. From + Rajan Gill. + - Work Queue: When queuing new LP work, don't signal any threads if + they are all busy. From Heesub Shin. + - Work Queue: Signal sent from work_signal() may interrupt the low + priority worker thread that is already running. For example, the + worker thread that is waiting for a semaphore could be woken up by the + signal and break any synchronization assumption as a result. It also + does not make any sense to send signal if it is already running and + busy. This change fixes it. From Heesub Shin. + - Fix DEBUGASSERT() in group_signal.c. From Masayuki Ishikawa. + - Eliminate bad boardctl() commands: Remove all references to + BOARDIOC_PWMSETUP and board_pwm_setup(). Remove all references to + BOARDIOC_ADCSETUP and board_adc_setup(). Remove + BOARDIOC_CAN_INITIALIZE. CAN initialization is now done in the board + initialization logic just like every other device driver. + - pthreads: Fix an error in pthread_mutex_destroy(). An error could + occur while destroying a mutex after a pthread has been canceled while + holding the mutex. + - task_restart: Make sure new task starts with pre-emption disabled and + not in a critical section. + - Enter/leave Critical Sections. Major redeign to + enter/leave_critical_section logic to deal with the case where + interrupts are disabled only on the local CPU. In this case, some + rather complex spinlocks must be used to maintain the critical section + accross all CPUs. + - SMP Critical Sections: Fixes for the SMP case: (1) Change order for + SMP case in enter_critical_section: (1) Disable local interrupts + BEFORE taking spinlock and (2) If SMP is enabled, if any interrupt + handler calls enter_critical_section(), it should take the spinlock. + - SMP wdogs: Wdog timers use a tasking interface that to manipulate + wdogs, and a different interface in the timer interrupt handling logic + to manage wdog expirations. In the single CPU case, this is fine. + Since the tasking level code calls enter_critical_section, interrupts + are disabled and no conflicts can occur. But that may not be the case + in the SMP case. Most architectures do not permit disabling + interrupts on other CPUs so enter_critical_section must work + differently: Locks are required to protect code. this change adds + locking (via enter_critical section) to wdog expiration logic for the + the case if the SMP configuration. + - SMP vfork(): Fix a race condition in the SMP case. Existing logic + depended on the fact that the child would not run until waitpid was + called because the child had the same priority as the parent. BUT in + the SMP case that is not true... the child may run immediately on a + different CPU. + - SMP: This change adds a new internal interfaces and fixes a problem + with three APIs in the SMP configuration. The new internal interface + is sched_cpu_pause(tcb). This function will pause a CPU if the task + associated with 'tcb' is running on that CPU. This allows a different + CPU to modify that OS data stuctures associated with the CPU. When + the other CPU is resumed, those modifications can safely take place. + The three fixes are to handle cases in the SMP configuration where one + CPU does need to make modifications to TCB and data structures on a + task that could be running running on another CPU. Those three cases + are task_delete(), task_restart(), and execution of signal handlers. + In all three cases the solutions is basically the same: (1) Call + sched_cpu_pause(tcb) to pause the CPU on which the task is running, + (2) perform the necessary operations, then (3) call up_cpu_resume() to + restart the paused CPU. + - SMP: Add logic to avoid a deadlock condition when CPU1 is hung waiting + for g_cpu_irqlock with interrupts interrupts and CPU0 is waiting for + g_cpu_paused. + - SMP: Enforce this rule: Tasks which are normally restored when + sched_unlock() is called must remain pending (1) if we are in a + critical section, i.e., g_cpu_irqlock is locked , or (2) other CPUs + still have pre-emption disabled, i.e., g_cpu_schedlock is locked. In + those cases, the release of the pending tasks must be deferred until + those conditions are met. + + * File System/Block Drivers/MTD Drivers: + + - AT24XX EEPROM MTD driver: Added EEPROM timeout. Fromo Aleksandr + Vyhovanec. + - fs/procfs: Fix procfs status for SMP case. + + * Graphics/Graphic Drivers: + + - Fonts: Correct some default font IDs. From Pierre-Noel Bouteville. + + * Common Drivers: + + - usbhost/enumerate: Fix possible buffer overwrite. From Janne Rosberg. + - usbhost/composite: Fix compile; missing semicolons. From Jann Rosberg. + - syslog: Fixes required for file syslog output. From Max Kriegleder. + - SPI configuration: Fix Kconfig warning. This change moves the + ARCH_HAVE_SPI options outside the check for SPI. Those options don't + depend on SPI, and Kconfig files in arch/ enable them even if SPI + isn't enabled. Source the driver's Kconfig in drivers/Kconfig only + if support for the driver is enabled prevents us from defining these + ARCH_HAVE options in the driver's Kconfig. We should probably remove + the other checks in drivers/Kconfig and check if the drivers are + enabled only in their Kconfig. From Paul A. Patience. + - drivers/timer: Remove the timer driver TIOC_SETHANDLER IOCTL call. + This calls directly from the timer driver into application code. That + is non-standard, non-portable, and cannot be supported. Instead, add + timer driver hooks to support signal notification of timer + expiration. Signal notification logic added by Sebastien Lorquet. + - All timer lower half drivers. Port Sebastien's changes to all other + implementations of the timer lower half. + - USB MSC Device: Fix length of mode6 sense reply packet. From + Wolfgang Reißnegger. + - USB Composite Host: Fix end offset in usbhost_copyinterface(). From + Janne Rosberg. + - USB CDC/ACM Host: Add CDC_SUBCLASS_ACM and CDC_PROTO_ATM to + supported class and proto. From Janne Rosberg. + - SSD1306: Fix errors in SPI mode configuration. From Gong Darcy. + - CDC/ACM Device Class: uart_ops_s portion of cdcacm will not be + initalized with correct functions if CONFIG_SERIAL_DMA is selected. + + * Networking/Network Drivers: + + - drivers/net/tun.c: Fix bug in TUN interface driver. From Max Nekludov. + + * ARMv7-A: + + - ARMv7-A SMP: Add SMP logic to signal handling. + + * ARMv7-M: + + - ARMv7-M: Fix double allocation of MPU region in mmu.h. + + * ARMv7-R: + + - ARMv7-R: Fix compilation error. This change fixes compilation errors + on MPU support for ARMv7-R. From Heesub Shin. + - ARMv7-R: fix invalid drbar handling. In ARMv7-R, [31:5] bits of DRBAR + is physical base address and other bits are reserved and SBZ. Thus, + there is no point in passing other than the base address. From Heesub + Shin. + - ARMv7-R: Remove the redundant update on SCTLR. mpu_control() is + invoking cp15_wrsctlr() around SCTLR update redundantly. From Heesub + Shin. + - ARMv7-R: add new Kconfig entries for d/i-cache. Unlike in ARMv7-A/M, + Kconfig entries for data and instruction caches are currently missing + in ARMv7-R. This change adds those missing Kconfig entries. Actual + implmenetation for those functions will be added in the subsequent + patches. From Heesub Shin. + - ARMv7-R: Add cache handling functions. This change adds functions for + enabling and disabling d/i-caches which were missing for ARMv7-R. + From Heesub Shin. + - ARMv7-R: Fix typo in mpu support. s/ARMV7M/ARMV7R/g. From Heesub Shin. + - ARMv7-R: Fix CPSR corruption after exception handling. A sporadic + hang with consequent crash was observed when booting. It seemed to be + caused by the corrupted or wrong CPSR restored on return from + exception. NuttX restores the context using code like this: msr spsr, + r1. GCC translates this to: msr spsr_fc, r1. As a result, not all + SPSR fields are updated on exception return. This should be: msr + spsr_fsxc, r1. On some evaluation boards, spsr_svc may have totally + invalid value at power-on-reset. As it is not initialized at boot, the + code above may result in the corruption of cpsr and thus unexpected + behavior. From Heesub Shin. + - ARMv7-R: Fix to restore the Thumb flag in CPSR. Thumb flag in CPSR is + not restored back when the context switch occurs while executing thumb + instruction. From Heesub Shin. + + * Atmel SAM3/4 Drivers: + + - SAM3/4 UDP: Add delay between setting and clearing the endpoint RESET + bit in sam_ep_resume(). We need to add a delay between setting and + clearing the endpoint reset bit in SAM_UDP_RSTEP. Without the delay + the USB controller will (may?) not reset the endpoint. If the + endpoint is not being reset, the Data Toggle (DTGLE) bit will not to + be cleared which will cause the next transaction to fail if DTGLE is + 1. If that happens the host will time-out and reset the bus. Adding + this delay may also fix the USBMSC_STALL_RACEWAR in usbmsc_scsi.c, + however this has not been verified yet. From Wolfgang Reißnegger. + - SAM3/4: Remove unused 'halted' flag from UDP driver. From Wolfgang + Reißnegger. + - SAM3/4: Remove 'stalled' flag from the UDP driver. This flag is not + necessary because the state of the endpoint can be determined using + 'epstate' instead. From Wolfgang Reißnegger. + + * Atmel SAM3/4 Boards: + + - SAM4S Xplained Pro: Configuration uses old, improper timer interface. + CONFIG_TIMER disabled in configuration. Remove obsolete timer + initialization logic. + + * Atmel SAMV7 Drivers: + + - SAMv7 USBDEVHS: A problem occurred with the SAMV7 USBDEVHS driver if + the USB cable is unplugged while a large amount of data is send over + an IN endpoint using DMA. If the USB cable is plugged in again after a + few seconds it is not possible to send data over this IN endpoint + again, all other endpoints work as expected. The problem occurs + because if the USB cable is unplugged while an DMA transfer is in + flight the transfer is canceled but the register SAM_USBHS_DEVDMACTRL + is left in an undefined state. The problem was fixed the problem by + resetting the register SAM_USBHS_DEVDMACTRL to a known state. + Additionally all pending interrupts are cleared. From Stefan Kolb. + - SAMV7 MCAN: Prevent Interrupt-Flooding of ACKE when not connected to + CAN-BUS. An Acknowledge-Error will occur every time no other CAN Node + acknowledges the message sent. This will also occur if the device is + not connected to the can-bus. The CAN-Standard declares, that the Chip + has to retry a given message as long as it is not sent successfully + (or it is not cancelled by the application). Every time the chip tries + to resend the message an Acknowledge-Error-Interrupt is generated. At + high baud rates this can lead in extremely high CPU load just for + handling the interrupts (and possibly the error handling in the + application). To prevent this Interrupt-Flooding we disable the ACKE + once it is seen as long we didn't transfer at least one message + successfully. From Frank Benkert. + - SAMV7 MCAN: Make delete_filter functions more robust. From Frank + Benkert. + + * Atmel SAMA5 Drivers: + + - SAMA5 PWM: Driver does not build when executing from SDRAM before + board frequencies are not constant. Rather, the bootloader configures + the clocking and we must derive the clocking from the MCK left by the + bootloader. This means lots more computations. This is untested on + initial change because I don't have a good PWM test setup right now. + + * Misoc LM32: + + - Misoc LM32: Corrects a bug that never occured in qemu on simulation or + real fpga. The error was that the r1 register was being modified out + of context switching and not restoring it. From Ramtin Amin + + * NXP Freescale i.MX6: + + - i.MX6 interrupt handling: Additional logic needed to handle nested + interrupts when an interrupt stack is used. Nesting can occur because + SGI interrupts are non-maskable. + + * NXP Freescale LPC43xx Drivers: + + - LPC43xx serial: Fix a typo in ioctl TIOCSRS485 ioctl. From Vytautas + Lukenskas. + - LPC43xx serial: Restore RS485 mode on serial port open (if RS485 is + enabled via menuconfig). From Vytautas Lukenskas. + - LPC43xx SD/MMC: Correct some definitions on SMMC control register in + lpc43_sdmmc.h. From Alan Carvalho de Assis. + - LPC43xx SD card: Correct pin configuration options needed for SD card + pins. From Alan Carvalho de Assis. + + * SiLabs EFM32: + + - EFM32: Fix a compilation error. From Pierre-noel Bouteville. + + * STMicro STM32 Drivers: + + - STM32 CHxN channels are always outputs. From Sebastien Lorquet. + - STM32 DAC: Fix shift value whenever there are is a DAC2 and, hence, + up to three interfaces. From Marc Rechté. + - STM32 F1: Add TIM8 to STM32F103V pinmap. From Maciej Wójcik. + - STM32 F1: Fix for F1 RTC Clock, tested on F103. From Maciej Wójcik. + - STM32 F3: STM32F303xB and STM32F303xC chips have 4 ADCs. From Paul + A. Patience. + - STM32 F4: A new implementation of the STM32 F4 I2C bottom half. The + common I2C as this did not handled correctly in the current + implementation (see also https://github.com/PX4/NuttX/issues/54). The + changes almost exclusively affect the ISR. From Max Kriegleder. + - STM32 F4 OTGHS Host: If STM32F446 increase number of channels to + 16. From Janne Rosberg. + - STM32 F4: I think, that Size is (highest address+1 - Base address). + Base address has been removed and if address+count >= size we are + outside of the Flash. From David Sidrane. + - STM32 F4: Fix ADC compilation error when DMA isn't enabled. From Paul + A. Patience. + - STM32 F4: STM32F427 was rebooting. Over reached family. From David + Sidrane. + - STM32 F4: Added STM32F469 RAM size and deliberated STM32F446 size. + From David Sidrane. + - STM32 F4: Typo in stm32f76xxxx_pinmap.h edited online with + Bitbucket. From David Sidrane. + - STM32 F7: stm32_i2c.c Dejavu. Fixes a bug previously found in the + F4. From David Sidrane. + - STM32 F7: OTGDEV fixed typo. From David Sidrane. + - STM32 F7: Fix to SPI-Master driver. Without this the chip select + decoding feature will not work properly. From Michael Spahlinger. + - STM32 F7: STM32F7 SD/MMC driver depends on CONFIG_SDIO_DMA which is + only defined in stm32/Kconfig. Changed to CONFIG_STM32F7_SDMMC_DMA + and defined in stm32f7/Kconfig. + - STM32 F7: Fix some STM32F7 copy paste errors. From David Sidrane. + - STM32 L4: Complementary PWM outputs on STM32L4" (1) too many + parentheses when calculating max chan count and (2) channel 4 does not + have a complementary output. From Sebastien Lorquet. + - STM32 L4: Fix I2C devices RCC registers. From Sebastien Lorquet. + - STM32 L4: Enable and renaming for 32l4 UARTs 4 and 5. From Sebastien + Lorquet. + - STM32 L4: Change the way to configure quadrature encoder prescalers. + From Sebastien Lorquet. + - STM32 L4: Correct USART1/2 definitions. Use default mbed UART4 + settings. From Sebastien Lorquet. + + * STMicro STM32 Boards: + + - STM32F103 Minimum: Fix Timers 2 to 7 clock frequencies. From Alan + Carvalho de Assis. + - Nucleo-F303RE: Remove duplicate setting from board.h. From Marc + Rechté. + - Nucleo F303RE: Various fixes to get the ADC configuration building + again after PR. Refresh all configurations. + - Nucleo L476RG: Add better selection of timer. + + * TI Tiva Boards: + + - DK-TM4C129x: Typo fix. From Wolfgang Reißnegger. + + * Xtensa ESP32: + + - ESP32 core v2: Flush the UART TX buffer in the esp32 serial shutdown + routine. The ROM bootloader does not flush the FIFO before handing + over to user code, so some of this output is not currently seen when + the UART is reconfigured in early stages of startup. From Angus + Gratton. + - Xtensa ESP32: Corrects a problem with dispatching to signal + handlers: Cannot vector directly to the signal handling function as + in other ABIs under the Xtensa Window ABI. In that case, we need to + go through a tiny hook when performs the correct window call (call4) + otherwise registers will be scrambled in the signal handler. + + * Xtensa ESP32 Boards: + + - ESP32 core v2: Changes the openocd config file's default flash + voltage from 1.8V to 3.3V. This is not necessary right now, but may + save some hard-to-debug moments down the track (3.3V-only flash + running at 1.8V often half-works and does weird things...). From + Angus Gratton. + + * C Library/Header Files: + + - libc/stdio: Fixes sscanf() %sn where strlen(data) < n. From David + Sidrane. + - libc/stdio: Include wchar.h in lib_libvsprintf.c to fix compilation + error. From Alan Carvalho de Assis. + - include/sys/time.h: timersub macro modified per recommendations of + phreakuencies. + - include/ctype.h and cxx/cctype: Implement ctype.h functions as inline + if possible. cctype can then properly select namespace. + - include/: Fix a number of header files with mismatched 'extern C {' + and '}'. + - libc/unisted: Change brings strtol() and related functions more + conformant with POSIX. Corner cases like strtol(-2147483648, NULL, + 10) now pass clang -fsanitize=integer without warnings. From Juha + Niskanen. + - libc/unistd: sleep() was returning remaining nanoseconds (kind of), + instead the remaining seconds. From Eunbong Song. + - termios.h: Fix CRTSCTS define to include input and output flow. From + Lorenz Meier. + + * Build/Configuration System: + + - configs/*/defconfig: The buttons example was changed to archbuttons. + As a result all of the button configurations are broken and need some + renaming in the defconfig files. Noted by Frank Berkert. + - config/*/defconfgs: More fallout from name change of + apps/examples/buttons to archbuttons. + - configs: All QE encoder files. Last change made timer hard-coded to + 3. Make configurable. + - configs: Remove all traces of the no-longer existent ARCHBUTTONS + example. Remove all button configurations that depended on the + obsoleted ARCHBUTTON example. + - minnsh Configurations: Remove minnsh configurations and support + logic: up_getc() and lowinstream. This was an interesting exercise + to see just how small you could get NuttX, but otherwise it was not + useful: (1) the NSH code violated the OS interface layer by callup + up_getc() and up_putc() directly, and (2) while waiting for character + input, NSH would call up_getc() which would hog all of the CPU. Not a + reasonable solution other than as a proof of concept. + + * Application Build/Configuration System: + + - Make.defs: Using wrong link script if native window tool used with + Cygwin. + + * apps/platform: + + - ESP32 Core v2 Platform: Fix some naming that prevented building the + C++ support. + + * apps/nshlib: + + - NSH Library: nsh_getdirpath(), use snprint instead of sprintf to + avoid possibility of buffer overrun. Noted by Chung Hwan Kim. + + * apps/system: + + - Remove std_readline(). This called up_getc() and up_putc() directly, + violating the POSIX OS interface. + + * apps/netutils: + + - FTPD: Fixed bug that didn't free ftpd ressources on exit. From Pascal + Speck. + - NTP client: Fix missing left parenthesis. From Pierre-Noel Bouteville. + - cJSON: Import patch to fix:cJSON_PrintUnformatted() behaves unexpected + if an empty array shall be printed to text. from Jerome Lang + 2012-04-19. From Pierre-Noel Bouteville. + - esp8266 update cosmetic and many bug fix. From Pierre-Noel Bouteville. + - FTPD: Fix bug un ftpd file or socket may be not closed. From + Pierre-Noel Bouteville. + + * apps/modbus: + + - Modbus Master is missing many files and doesn't compile at all. More + details in + https://groups.yahoo.com/neo/groups/nuttx/conversations/topics/13734. + From Vytautas Lukenskas. + + * apps/examples: + + - The examples/qencoder app was trying to init the encoder by a direct + call into the board, cheating in a local header to declare the + normally unavailable function prototype. From Sebastien Lorquet. + - apps/examples/timer: Should detach signal handler before exiting. + - examples/qencode: The examples/qencoder app was trying to init the + encoder by a direct call into the board, cheating in a local header to + declare the normally unavailable function prototype. From Sebastien + Lorquet. + - apps/examples/archbuttons: Removed becaue it violates OS interface + principles. + - examples/adc, pwm, can: Remove all usage of BOARDIOC_ADCTEST_SETUP, + BIOARDIOC_PWMSETUP. Remove BOARDIOC_CAN_INITIALIZE. CAN + initialization is now done in the board initialization logic just like + every other device driver. + - examples/ostest: Add some delays to the pthread cancellation test. + With deferred cancellation enabled, things happen more asynchronously.