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Update ChangeLog and README

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Gregory Nutt 2016-08-02 14:32:13 -06:00
parent 30229c217b
commit c7b917f317
2 changed files with 71 additions and 3 deletions
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66
ChangeLog
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@ -12402,11 +12402,58 @@
were wrong. FIONWRITE should return the number of bytes waiting in
the outgoing send queue, not the free space. Rather, FIONSPACE should
return the free space in the send queue (2016-07-25).
* lib_dumpbuffer: Now prints a large on-stack buffer first to avoid
problems when the syslog output is prefixed with time. From Pierre-
noel Bouteville (2016-07-27).
* sched/clock and sched/sched: Add standard adjtime() interface and
basic timekeeping support. From Max Neklyudov (Merged on
basic timekeeping support. Normally used with an NTP client to keep
system time in synchronizationi. From Max Neklyudov (Merged on
20160-07-28).
* arch/arm/src/stm32: Add timekeeping support for the STM32 tickless
mode. From Max Neklyudov (Merged on 20160-07-28).
* Top-Level Makefiles. Fix a chicken-and-egg problem. In the menuconfig
target, the context dependency was executed before kconfig-mconf.
That was necessary because the link at apps/platform/board needed to
be set up before creating the apps/Kconfig file. Otherwise, the
platform Kconfig files would not be included. But this introduces
the chicken-and-egg problem in some configurations.
In particular: (1) An NX graphics configuration is used that requires
auto-generation of source files using cpp, (2) the configuration is
set for Linux, but (3) we are running under Cygwin with (4) a Windows
native toolchain. In this case, POSIX-style symbolic links are set
up but the Windows native toolchain cannot follow them.
The reason we are running 'make menuconfig' is to change from Linux
to Cygwin, but the target fails. During the context phase, NX runs
CPP to generate source files but that fails because the Windows native
toolchain cannot follow the links. Checkmate.
This was fixed by changing all of the make menuconfig (and related)
targets. They no longer depend on context being run. Instead, they
depend only on the dirlinks target. The dirlinks target only sets
up the directory links but does not try to run all of the context
setup; the compiler is never invoked; no code is autogeneraed; and
things work (2016-07-28).
* tools/refresh.sh: Recent complexities added to apps/ means that
configuration needs correct Make.defs file in place in order to
configure properly (2016-07-28).
* tools/kconfig2html.c: Update to handle absolute paths when sourcing
Kconfig files (2016-07-29).
* libc/math: This fixes the following libc/math issues: (1) asin[f l]()
use Newton’s method to converge on a solution. But Newton’s method
converges very slowly (> 500,000 iterations) for values of x close
to 1.0; and, in the case of asinl(), sometimes fails to converge
(loops forever). The attached patch uses an trig identity for
values of x > sqrt(2). The resultant functions converge in no more
than 5 iterations, 6 for asinl(). (2) The NuttX erf[f l]() functions
are based on Chebyshev fitting to a good guess. The problem there’s a
bug in the implementation that causes the functions to blow up with x
near -3.0. This patch fixes that problem. It should be noted that
this method returns the error function erf(x) with fractional error
less than 1.2E-07 and that’s fine for the float version erff(), but
the same method is used for double and long double version which
will yield only slightly better precision. This patch doesn't address
the issue of lower precision for erf() and erfl(). (3) a faster
version of copysignf() for floats is included. From David S. Alessio
(2016-07-30).
* I/O Expander: Remove hard-coded PCA9555 fields from ioexpander.h
definitons. Add support for an attach() method that may be used when
any subset of pin interrupts occur (2016-07-31).
@ -12423,3 +12470,20 @@
(2016-07-31).
* drivers/ioexpander/skeleton.c: Add a skeleton I/O Expander driver
(based on the PCA9555 driver) (2016-07-31).
* I/O Expander Interface: Encode and extend I/O expander options to
include interrupt configuration (2016-07-31).
* drivers/ioexpander: Add an (untested) TCA64XX I/O Expander driver
leveraged from Project Ara (2016-07-31).
* I/O Expander Interface: Add argument to interrupt callback. Add a
method to detach the interrupt (2016-08-01).
* drivers/ioexpander: Add a GPIO lower-half driver that can be used to
register a GPIO character driver for accessing pins on an I/O expander
(2016-08-01).
* drivers/ioexpander: Add PCF8574 I/O Expander driver. Some cleanup
also of other expander drivers (2016-08-01).
* drivers/ioexpander: GPIO driver: Add IOCTLs to get the pin type and
to unregister a signal handler (2016-08-01).
* configs/sim: Add simulator-based test support for apps/examples/gpio
2016-08-01).
* drivers/sensors: Add KXJT9 Accelerometer driver from the Motorola
Moto Z MDK (2016-08-02).

8
README.txt
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@ -948,9 +948,13 @@ Native Windows Build
--------------------
The beginnings of a Windows native build are in place but still not often
used as of this writing. The windows native build logic initiated
if CONFIG_WINDOWS_NATIVE=y is defined in the NuttX configuration file:
used as of this writing. The build was functional but because of lack of
use may find some issues to be resolved with this build configuration.
The windows native build logic initiated if CONFIG_WINDOWS_NATIVE=y is
defined in the NuttX configuration file:
This build:
- Uses all Windows style paths