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Desription: I am unable to initialize a 2Gb SanDisk microSD card (in adaptor) on the
the mcu123 board. The card fails to accept CMD0. Doesn't seem like a software
issue, but if anyone else sees the problem, I'd like to know.
Related: Fixes were recently made for the SDIO-based MMC/SD driver to
support 2Gb cards -- the blocksize was forced to 512 in all cases. The SPI-
based driver may also have this problem (but I don't think this would have
Title: USB BROKEN?
Description: I tried to bring up the new configuration at configs/mcu123-214x/composite,
and Linux failed to enumerate the device. I don't know if this is
a problem with the lpc214x USB driver (bit rot), or due to recent
changed (e.g., -r4359 is suspicious), or an incompatibility between the
Composite driver and the LPC214x USB driver. It will take more work
to find out which -- like checking if the other USB configurations are
also broken.
Status: Open
Priority: It would be high if the LPC2148 were a current, main stream architecture.
I am not aware of anyone using LPC2148 now so I think the priority has
to be low.
o ARM/LPC313x (arch/arm/src/lpc313x/)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Title: PLATFORM-SPECIFIC LOGIC
Description: arch/arm/src/lpc313x/lpc313x_spi.c contains logic that is specific to the
Embedded Artist's ea3131 board. We need to abstract the assignment of SPI
chip selects and logic SPI functions (like SPIDEV_FLASH). My thoughts are:
- Remove lpc313x_spiselect and lpc313x_spistatus from lpc313x_internal.h
- Remove configs/ea3131/src/up_spi.c
- Add configurations CONFIG_LPC3131x_CSOUT1DEV, CONFIG_LPC3131x_CSOUT2DEV,
and CONFIG_LPC3131x_CSOUT3DEV that maps the lpc313x SPI chip selects to
SPIDEV_* values.
- Change arch/arm/src/lpc313x/lpc313x_spi.c to use those configuration
settings.
Status: Open
Priority: High if you want to use SPI on any board other than the ea3131.
Description: arch/arm/src/lpc313x/lpc313x_spi.c may or may not be functional. It was
reported to be working, but I was unable to get it working with the
Atmel at45dbxx serial FLASH driver.
Status: Open
Priority: High if you need to use SPI.
o ARM/STR71x (arch/arm/src/str71x/)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Description: Verify SPI driver and integrate with MMC support. This effort is stalled
at the moment because the slot on the Olimex board only accepts MMC card;
Description: Develop a USB driver and integrate with existing USB serial and storage
class drivers.
Title: SPI METHODS ARE NOT THREAD SAFE
Description: SPI methods are not thread safe. Needs a semaphore to protect from re-entrancy.
Status: Open
Priority: Medium -- Will be very high if you do SPI access from multiple threads.
o ARM/LM3S6918 (arch/arm/src/lm3s/)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Description: Still need to implement I2C
Description: Should terminate SSI/SPI transfer if an Rx FIFO overrun occurs.
Right now, if an Rx FIFO overrun occurs, the SSI driver hangs.
Status: Open
Priority: Medium, If the transfer is properly tuned, then there should not
be any Rx FIFO overruns.
Description: There are some lingering bugs in THTTPD, possibly race conditions. This
is covered above under Network Utilities, but is duplicated here
to point out that the LM3S suffers from this bug.
Status: Open.
UPDATE: I have found that increasing the size of the CGI program stack
from 1024 to 2048 (on the LM3S) eliminates the problem. So the most
likely cause is probably a stack overflow, not a hard sofware bug.
Priority: Probably Low
o ARM/STM32 (arch/arm/src/stm32/)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Description: NOR Flash driver with FTL layer to support a file system.
Status: Open
Priority: Low
Description A USB device-side driver is in place but not well tested. At
present, the apps/examples/usbserial test sometimes fails. The situation
that causes the failure is:
- Host-side of the test started after the target side sends the
first serial message.
The general failure is as follows:
- The target message pends in the endpoint packet memory
- When the host-side of the test is stated, it correctly
reads this pending data.
- an EP correct transfer interrupt occurs and the next
pending outgoing message is setup
- But, the host never receives the next message
If the host-side driver is started before the first target message
is sent, the driver works fine.
Status: Open
Priority: Medium-High
Title: FSMC EXTERNAL MEMORY UNTESTED
Description: FSMC external memory support is untested
Description: DMA logic needs to be extended. DMA2, Channel 5, will not work
because the DMA2 channels 4 & 5 share the same interrupt.
Status: Open
Priority: Low until someone needs DMA1, Channel 5 (ADC3, UART4_TX, TIM5_CH1, or
TIM8_CH2).
Title: UNFINISHED DRIVERS
Description: The following drivers are incomplete: DAC. The following drivers
are untested: DMA on the F4, CAN.
Status: Open
Priority: Medium
Title: F4 SDIO MULTI-BLOCK TRANSFER FAILURES
Description: If you use a large I/O buffer to access the file system, then the
MMCSD driver will perform multiple block SD transfers. With DMA
ON, this seems to result in CRC errors detected by the hardware
patacongo
committed
during the transfer. Workaround: CONFIG_MMCSD_MULTIBLOCK_DISABLE=y.
Status: Open
Priority: Medium
Title: DMA BOUNDARY CROSSING
Description: I see this statement in the reference manual: "The burst
configuration has to be selected in order to respect the AHB protocol,
where bursts must not cross the 1 KB address boundary because the
minimum address space that can be allocated to a single slave
is 1 KB. This means that the 1 KB address boundary should not be crossed
by a burst block transfer, otherwise an AHB error would be generated,
that is not reported by the DMA registers."
The implication is that there may be some unenforced alignment
requirements for some DMAs. There is nothing in the DMA driver to
prevent this now.
Status: Open
Priority: Low (I am not even sure if this is a problem yet).
Title: AMBER WEB SERVER UNTESTED
Description: There is a port for the Amber Web Server ATMega128, however this is
completely untested due to the lack to compatible, functional test
equipment.
Status: Open
Priority: The priority might as well be low since there is nothing I can do about
it anyway.
Description: Many printf-intensive examples (such as the OS test) cannot be executed
on most AVR platforms. The reason is because these tests/examples
generate a lot of string data. The build system currently places all
string data in RAM and the string data can easily overflow the tiny
SRAMs on these parts. A solution would be to put the string data
into the more abundant FLASH memory, but this would require modification
to the printf logic to access the strings from program memory.
Priority: Low. The AVR is probably not the architecuture that you want to use
for extensive string operations.
Title: SPI AND USB DRIVERS UNTESTED
Description: An SPI driver and a USB device driver exist for the AT90USB (as well
as a USB mass storage example). However, this configuration is not
fully debugged as of the NuttX-6.5 release.
Update 7/11: (1) The SPI/SD driver has been verified, however, (2) I
believe that the current teensy/usbstorage configuration uses too
much SRAM for the system to behave sanely. A lower memory footprint
version of the mass storage driver will be required before this can
be debugged
Status: Open
Priority: Medium-High.
Title: AVR32 PORT IS NOT FULLY TESTED
Description: A complete port for the AVR32 is provided and has been partially
debugged. There may still be some issues with the serial port
driver.
Status: Open
Priority: Medium
o 8051 / MCS51 (arch/8051/)
^^^^^^^^^^^^^^^^^^^^^^^^^
Title: STACK OVERFLOWS DURING INTERRUPT HANDLING
Description: Current status:
- Basic OS task management seems OK
- Fails when interrupts enabled. The stack pointer is around
0x6e before the failure occurs. It looks like some issue
when the stack pointer moves from the directly to indirectly
addressable region (0x80 boundary).
- Work on the 8052 is temporarily on hold
Status: Open
Priority: Low, 8051 is a tough platform because of the tiny stack.
Title: TIMER 0 AS SYSTEM TIMER
Description: Use timer 0 as system timer. Timer 2 is needed for second UART.
Logic is implemented, but there needs to be a system
configuration to change the ticks-per-second value to match the
timer interrupt rate
Status: Open
Priority: Low
Description: During build, there are several integer overflows reported:
sched/gmtime_r.c aroud lines 184 and 185
sched/clock_initialize.c at line 107
sched/pthread_create.c at 330
apps/examples/ostest/barrier.c around lines 53 and 74
apps/examples/ostest/sighand.c at 225 and 244
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committed
Status: Open. Update: These were reviewed during the hcs12 port. The
hcs12 also has 16-bit integer types (if -mshort is in the CFLAGS).
I believe that the warnings in most of the above have been fixed
but this has not been verified on this platform).
Description Global data is not being initialized. Logic like that of SDCCs
crt0*.s needs to be incorporated into the system boot logic
Status: Open
Priority: Low -- only because there as so many other issues with 8051
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o MIPS/PIC32(arch/mips)
^^^^^^^^^^^^^^^^^^^^^
Title: PIC32 USB DRIVER DOES NOT WORK WITH MASS STORAGE CLASS
Description: The PIC32 USB driver either crashes or hangs when used with
the mass storage class when trying to write files to the target
storage device. This usually works with debug on, but does not
work with debug OFF (implying some race condition?)
Here are some details of what I see in debugging:
1. The USB MSC device completes processing of a read request
and returns the read request to the driver.
2. Before the MSC device can even begin the wait for the next
driver, many packets come in at interrupt level. The MSC
device goes to sleep (on pthread_cond_wait) with all of the
read buffers ready (16 in my test case).
3. The pthread_cond_wait() does not wake up. This implies
a problem with pthread_con_wait(?). But in other cases,
the MSC device does wake up, but then immediately crashes
because its stack is bad.
4. If I force the pthread_cond_wait to wake up (by using
pthread_cond_timedwait instead), then the thread wakes
up and crashes with a bad stack.
So far, I have no clue why this is failing.
Status: Open
Priority: High
o Hitachi/Renesas SH-1 (arch/sh/src/sh1)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Description: There are instabilities that make the SH-1 port un-usable. The
nature of these is not understood; the behavior is that certain SH-1
instructions stop working as advertised. I have seen the following
examples:
412b jmp @r1 - Set a return address in PR, i.e., it behaved like
410b jsr @r1. Normally 412b works correctly, but in the failure
condition, it reliably set the PR.
69F6 mov.l @r15+,r9 - wrote the value of R1 to @r15+. This behavior
does not correspond to any known SH-1 instruction
This could be a silicon problem, some pipeline issue that is not
handled properly by the gcc 3.4.5 toolchain (which has very limit
SH-1 support to begin with), or perhaps with the CMON debugger. At
any rate, I have exhausted all of the energy that I am willing to put
into this cool old processor for the time being.
Status: Open
Priority: Low -- because the SH-1, SH7032, is very old and only of historical
interest.
o Renesas M16C/26 (arch/sh/src/m16c)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Description: The M16C target cannot be built. The GNU m16c-elf-ld link fails with
the following message:
m32c-elf-ld: BFD (GNU Binutils) 2.19 assertion fail /home/Owner/projects/nuttx/buildroot/toolchain_build_m32c/binutils-2.19/bfd/elf32-m32c.c:482
Where the reference line is:
/* If the symbol is out of range for a 16-bit address,
we must have allocated a plt entry. */
BFD_ASSERT (*plt_offset != (bfd_vma) -1);
No workaround is known at this time.
Status: Open
Priority: High -- this is a show stopper for M16C.
Description: Coding of the initial port is complete, but is untested.
Status: Open
Priority: Low
Description: Serial drivers were developed for the M16C, however, the SKP16C26
Title: UNIMPLEMENTED M16C DRIVERS
Description: Should implement SPI, I2C, Virual EEPROM, FLASH, RTC drivers
Status: Open
Priority: Medium
patacongo
committed
Description: The SDCC version the same problems with integer overflow during
compilation as described for pjrc-8051. At typical cause is code like
patacongo
committed
usleep(500*1000) which exceeds the range of a 16-bit integer.
Status: See pjrc-8051. These have probably been fixed but have not yet
been verified on these platforms.
Description: The simulated Z80 serial console (configs/z80sim/src/z80_serial.c +
driver/serial.c) does not work. This is because there are
no interrupts in the simulation so there is never any serial
traffic.
Status: Open
Priority: Low -- the simulated console is not critical path and the designs
to solve the problem are complex.
Title: ZDS-II LIBRARIAN WARNINGS
Description: ZDS-II Librarian complains that the source for the .obj file
is not in the library.
Status: Open
Priority: Low, thought to be cosmetic. I think this is a consequence of
replacing vs. inserting the library.
Title: ZDS-II COMPILER PROBLEMS
Description: The ZDS-II compiler (version 4.10.1) fails with an internal error
while compiler mm/mm_initialize. This has been reported as
incident 81509.
I have found the following workaround that I use to build for the
time being:
--- mm/mm_initialize.c.SAVE 2008-02-13 08:06:46.833857700 -0600
+++ mm/mm_initialize.c 2008-02-13 08:07:26.367608900 -0600
+#if 0 /* DO NOT CHECK IN */
CHECK_ALLOCNODE_SIZE;
CHECK_FREENODE_SIZE;
+#endif
Title: EZ8 PRIORITY INTERRUPTS
Description: Add support for prioritized ez8 interrupts. Currently logic supports
only nominal interrupt priority.
Status: Open
Priority: Low
Title: Z8ENCORE ONLY VERIFIED ON SIMULATOR
Description: The z8Encore! port has only been verified on the ZDS-II instruction
set simulator.
Status: Open
Priority: Medium
Description: The XTRS target (configs/xtrs) has a clean problem. The clean
rule removes .asm files. This works because there are no .asm
files except in sub-directories that are provided from 'make clean' --
except for XTRS: It has a .asm file in its src/ directory that
gets removed everytime clean is performd.
Status: Open
Priority: High if you happen to be working with XTRS.
Description: A "generic" SPI and I2C drivers have been coded for the eZ80Acclaim!
However, these remains untested since I have no SPI or I2C devices for
the board (yet).
Status: Open
Priority: Med
Title: SPI METHODS ARE NOT THREAD SAFE
Description: SPI methods are not thread safe. Needs a semaphore to protect from re-entrancy.
Status: Open
Priority: Medium -- Will be very high if you do SPI access from multiple threads.
Description: A "generic" I2C driver has been coded for the eZ8Encore!
However, this remains untested since I have no I2C devices for
the board (yet).
Status: Open
Priority: Med
Title: ZDS-II LIBRARIAN WARNINGS
Description: ZDS-II Librarian complains that the source for the .obj file
is not in the library.
Status: Open
Priority: Low, thought to be cosmetic. I think this is a consequence of
replacing vs. inserting the library.
Description: When the interrupt-driven serial driver is used, the system
hangs. This is because of TX ready (TRDE) interrupts that
get lost while interrupts are disabled. The existing
serial driver appears to be limited to hardware with a
latching, level-sensitive TX ready interrupt.
Status: Open
Priority: Medium. A polled, write-only serial driver is used in the
interim for system testing.
Description: The system delays do not appear to be correct with the
apps/examples/ostest/timedmqueue.c test.
Title: PROBLEMS WHEN DEBUG DISABLED
Description: At present, the z16f port does not run properly when CONFIG_DEBUG
is disabled: The obvious symptom is that there is no printf()
output. I have isolated with problem to errors in optimization.
With -reduceopt on the command line, I can get the printf output.
However, there are still errors in the compiled code -- specifically
in sched/timer_create.c.
I have submitted a bug report to ZiLOG for this (support incident
81400). You can see the status of the bug report (and lots more
technical detail) here:
http://support.zilog.com/support/incident/incident_support.asp?iIncidentId=81400&iSiteId=1&chLanguageCode=ENG
Summary of ZiLOG analysis: "This is a ZNEO compiler problem. ... [a] workaround
is to replace:
if ( !timerid || (clockid != 0) )
By:
if ((clockid != 0) || !timerid)"
Description: The pascal add-on does not work with the z16f (that is
configuration z16f2800100zcog/pashello). This appears to be
another ZDS-II error: when executing the instruction
SYSIO 0, WRITESTR a large case statement is executed. This
involves a call into the ZiLOG runtime library to __uwcase().
__uwcase is passed a pointer to a structure containing jump
information. The cause of the failure appears to be that
the referenced switch data is bad.
This is submited as ZiLOG support incident 81459.
Summary of ZiLOG analysis: "This is a ZNEO run time library problem.
One workaround is to replace the line 58 in uwcase.asm
From:
ADD R9,#4 ; Skip handler
To:
ADD R9,#2 ; Skip handler
And add uwcase.asm to the project.
If the customer does not want to modify uwcase.asm then the other
workaround is to add a dummy case and make it same as default:
case 0x8000:
default:
This will make sure that uwcase is not called but ulcase is called."
Status: Open. Due to licensing issues, I cannot include the modified
uwcase in the NuttX code base.
Description: Add support to maintain SPOV in context switching. This
improvement will provide protection against stack overflow
and make a safer system solution.
Status: Open
Priority: Low
Description: Add support for prioritized interrupts. Currently logic supports
only nominal interrupt priority.
Status: Open
Priority: Low
Title: ZDS-II COMPILER PROBLEMS
Description: The file drivers/mmcsd/mmcsd_sdio.c generates an internal compiler
error like:
mmcsd\mmcsd_sdio.c
Internal Error(0503) On line 2504 of "MMCSD\MMCSD_SDIO.C"
File <c3>, Args(562,46)
Status: Open. Recommended workaround: remove mmcsd_sdio.c from
drivers/mmcsd/Make.defs. There is no SDIO support for the Z16 anyway
Priority: Low
patacongo
committed
o mc68hc1x (arch/hc)
^^^^^^^^^^^^^^^^^^
Description: There is no script for building in banked mode (more correctly, there
is a script, but logic inside the script has not yet been implemented).
It would be necessary to implement banked mode to able to access more
the 48Kb of FLASH.
Status: Open.
Priority: Medium/Low
o Network Utilities (apps/netutils/)
Description: One critical part of netutils/ apps is untested: The uIP
resolver in netutils/resolv. The webclient code has been
tested on host using gethosbyname(), but still depends on the
untested resolve logic.
Status: Open
Priority: Medium, Important but not core NuttX functionality
Description: Port PPP support from http://contiki.cvs.sourceforge.net/contiki/contiki-2.x/backyard/core/net/ppp/
Status: Open
Priority: Low
Title: UNVERIFIED THTTPD FEATURES
Description: Not all THTTPD features/options have been verified. In particular, there is no
test case of a CGI program receiving POST input. Only the configuration of
Status: Open
Priority: Medium
Description: The first GET received by THTTPD is not responded to. Refreshing the page
from the browser solves the problem and THTTPD works fine after thatg. I
believe that this is the duplicate of another bug: "Outgoing [uIP] packets are dropped
and overwritten by ARP packets if the destination IP has not been mapped to a MAC."
Status: Open
Priority: Medium
Description: If the network is enabled, but THTTPD is not configured, it spews out lots
of pointless warnings. This is kind of annoying and unprofessional; needs to
be fixed someday.
Status: Open. An annoyance, but not a real problem.
Priority: Low
o NuttShell (NSH) (apps/nshlib)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Description: The wget command has been incorporated into NSH, however
it is still untested as of this writing (only because I
have not had the correct network setup for the testing
yet). Since wget depends on the also untest uIP resolv/
logic, it is like non-functional.
Status: Open
Priority: Med-High
Title: IFCONFIG AND MULTIPLE NETWORK INTERFACES
Descripton: The ifconfig command will not behave correctly if an interface
is provided and there are multiple interfaces. It should only
show status for the single interface on the command line; it will
still show status for all interfaces.
Status: Open
Priority: Low (multiple network interfaces not fully supported yet anyway).
Description: Add support to NSH to run NXFLAT programs from a ROMFS file system
Status: Open
Priority: Low (enhancement)
Description: Add an ARP command so that we can see the contents of the ARP table.
Status: Open
Priority: Low (enhancement)
o System libraries apps/system (apps/system)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Title: READLINE IMPLEMENTATION
Description: readline implementation does not use C-buffered I/O, but rather
talks to serial driver directly via read(). It includes VT-100
specific editting commands. A more generic readline() should be
implemented.
Status: Open
Priority: Low (unless you are using mixed C-buffered I/O with readline and
fgetc, for example).
o Other Applications & Tests (apps/examples/)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Title: EXAMPLES/PIPE ON CYGWIN
Description: The redirection test (part of examples/pipe) terminates
incorrectly on the Cywgin-based simulation platform (but works
fine on the Linux-based simulation platform).
Status: Open
Priority: Low
Description: examples/wget is untested on the target (it has been tested
on the host, but not in the target using the uIP resolv logic).
Status: Open
Priority: Med
Title: EXAMPLES/SENDMAIL UNTESTED
Description: examples/sendmail is untested on the target (it has been tested
on the host, but not on the target.
Status: Open
Priority: Med
Title: EXAMPLES/NX FONT CACHING
Description: The font caching logic in examples/nx is incomplete. Fonts are
added to the cache, but never removed. When the cache is full
it stops rendering. This is not a problem for the examples/nx
code because it uses so few fonts, but if the logic were
leveraged for more general purposes, it would be a problem.
Update: see examples/nxtext for some improved font cache handling.
Status: Open
Priority: Low. This is not really a problem becauses examples/nx works
fine with its bogus font caching.
Title: EXAMPLES/NXTEXT ARTIFACTS
Description: examples/nxtext. Artifacts when the pop-up window is opened.
There are some artifacts that appear in the upper left hand
corner. These seems to be related to window creation. At
tiny artifact would not be surprising (the initial window
should like at (0,0) and be of size (1,1)), but sometimes
the artifact is larger.
Status: Open
Priority: Medium.