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Fix the default DMA in python code #266

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merged 1 commit into from
Mar 6, 2018

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DMA 5 causes file system errors on PI 3
Original issue #224

DMA 5 causes file system errors on PI 3
@jgarff jgarff merged commit 09aec6b into jgarff:master Mar 6, 2018
brindosch pushed a commit to hyperion-project/rpi_ws281x that referenced this pull request Apr 5, 2018
* Added delay to ensure reset time being met with low led counts (jgarff#157)

* Fix includes as per jgarff#178 (jgarff#189)

* clean up doco and strandtest (jgarff#187)

* updated documentation on GPIO usage
strandtest now defaults to GRB colour order
added version.h to gitignore

* updated python readme

* more README cleanup

* added notes on spi max transfer size

* Fix freeze after running for long time  (jgarff#197)

* Whitespace cleanup

* Move channel_protocol_time so it handles 32 bit Color LEDs.

* Fix a freezing issue when running for a long time.

When current_timestamp overflowed 2^64, rolling back to 0 and ws2811->render_wait_until had not, this caused an incredibly long usleep in ws2811_render.

* Update README.md (jgarff#191)

* Update README.md

* updated spi buffer size location

* Add -lrt link flag for systems with older glibc (jgarff#195)

* Fix 32-bit overflow in get_microsecond_timestamp(). (jgarff#206)

On Raspbian systems, the tv_sec member of struct timespec is 32 bits
wide.  get_microsecond_timestamp() was overflowing in 32-bit
arithmetic on this member.  This causes the time that it returns to
jump ahead by many thousands of years at uptime = 35 minutes, 48
seconds.  (While the starting point for CLOCK_MONOTONIC_RAW is
unspecified, it seems to track system uptime in practice.)

This overflow didn't cause noticeable problems for me--ws2811_render()
skips the sleep when it thinks such a huge amount time has
elapsed--but it could possibly result in rarely-occurring skipped
frames if the WS2811 reset time isn't effectively honored by
ws2811_render().

* Add TOOLCHAIN option for cross compilation (jgarff#213)

Use this option if you want to cross-compile the library.
Typical usage is:

  scons TOOLCHAIN=arm-linux-gnueabihf

* Add -Wextra compile option and adapt code to suppress warnings (jgarff#214)

The changes in code are mostly type casts between int ann unsigned.

* Add shared library rasbpian package builder.  The package is not built by
default.  To generate the package you need:

- The dpkg-deb utility.
- Use "scons deb" to generate the package.

* Merge user-settable gamma correction into master (jgarff#216)

Merge user-settable gamma correction into master

* Bug fixes for Stretch and Compute Module support (jgarff#222)

* Bug fixes

Missing aligned(4) attribute in pcm.h makes the PCM case failing under
Stretch, due to a newer version of gcc (6.x).
Also fixed a bug in check_hwver_and_gpionum, so original Model A is
recognised.

* README, using SPI on RPi3

Added note to change the core frequency to 250 MHz when using SPI on
RPi 3.

* README fix

* Add support for Compute Module 1 and 3

* Fix undefined clock_gettime symbol

* add missing memory allocation for SPI mode (jgarff#231)

* added Ctrl-C handler to turn off all LEDs on exit (jgarff#140)

* added Ctrl-C handler to turn off all LEDs on exit

* added option -c

* Fix for segmentation fault on exit for Python API (jgarff#239)

Remove useless __del__ because the cleanup() function gets called by
atexit().
Remove ws.ws2811_fini() call which causes the SEGFAULT on exit.
Python does not complain about the memory leak in this way.

* Add support for new A+ hardware.

* Change default DMA channel to safe choice (10) (jgarff#253)

add warning on README.md

* Add getBrightness for brightness feedback from the buffer (jgarff#248)

* Instructions to install the Python library (jgarff#254)

Solving issue jgarff#142

* Fix for non-root users & SPI (jgarff#257)

* Fix for non-root users can use SPI

* use DEFINE'd device strings

also add a note to the readme

* Basic Golang Examples (jgarff#256)

* Added golang example

* Added basic README for golang examples. Added os exits for errors during color wipes for golang examples

* Fix the default DMA in python code (jgarff#266)

DMA 5 causes file system errors on PI 3

* Fixed typo in README.md (jgarff#273)

Was perusing recent commits and saw this.

* clarify electrical notes (jgarff#264)

* Fixed strandtest.py (jgarff#258)

* Fixed keyboardinterrupt, indentation inconsistency, & a few other minor bugs.  Added shebang.

* Fixed KeyboardInterrupt.  Again.

* KeyboardInterrupt works now.  For sure.

* Tabs to spaces, removed redundant signal handling

* Removed unused sys module import

* Added Raspberry Pi 3 B+ (jgarff#276)

* Added Pi 3 B+

* Remove unused import
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3 participants