1. 07 Feb, 2024 1 commit
    • Christoph Thelen's avatar
      Update rmt translator (#3629) · 14cdff10
      Christoph Thelen authored
      * Choose the number of RMT buffers in the ws2812 module.
      
      The number of buffers required for optimal operation should be selected
      by the ws2812 module, not the caller.
      
      * Add parameters for RGB LED bit times.
      
      This patch adds compatibility for different RGB LEDS besides the WS2812.
      ESP evaluation boards like the ESP32-C3-DevKitM-1 use an SK68XXMINI-HS
      RGB LED which does not respond to the timings of this module.
      The patch adds optional parameters for the bit timings to the write
      function. If the new parameters are not supplied, the old values are used.
      An example for the SK68XXMINI-HS is provided in the documentation.
      
      * Remove restrictions from RTM translator.
      
      The old RMT translator was not able to split the bits of the source
      data into the size requested by the RMT transmitter. Either all 8 bits
      of an input byte were translated or none.
      The new routine removes the restriction by delivering exactly the
      requested amount of data to the transmitter, which results in a more
      balanced buffering of translated data under load.
      
      * Add a parameter for the RGB LED reset time.
      
      This patch introduces a new optional parameter for the reset time
      in the RGB LED communication. The default is 51.2 microseconds. A
      value of 0 sends no reset signal, which allows a small optimisation
      for consecutive write commands.
      
      Please note that the reset time of the old code should be 50
      microseconds, as the define WS2812_DURATION_RESET suggested. Due to the
      restrictions of the old RMT translator routine, it was slightly
      increased to 51.2 microseconds. This patch keeps the value of 51.2
      microseconds to be as compatible as possible.
      
      * Minimize the time drift between RMT channels.
      
      Place all RMT channels in a group to minimize the time drift between
      the signals. Please note that this feature is not available on all
      platforms.
      
      * Fix the description of the SK6812 LED in the example code.
      
      The SK6812 expects the data for the green LED first, then red and
      finally blue. It should be described as a GRB LED.
      14cdff10
  2. 13 Jan, 2019 1 commit
    • Marcel Stör's avatar
      Re-organize documentation · 5750da12
      Marcel Stör authored
      Drop support for localized content, #2213
      
      Restructure some content to match more closely what we have in master, #2542
      5750da12
  3. 13 May, 2017 2 commits
  4. 06 May, 2017 1 commit
  5. 27 Apr, 2017 1 commit
  6. 14 Apr, 2017 2 commits
  7. 21 Sep, 2016 1 commit
  8. 09 May, 2016 1 commit
    • Thomas Soëte's avatar
      Finalize work on ws2812 module · 0577c8af
      Thomas Soëte authored
      * Fix bug on first write
      	Pin is 'HIGH' at reset, so we need to pull it down and generate a
      	reset.
      
      * Move init code to flash section, not needed to be in iram.
      
      * Remove pin choice in API
      
      * Remove lock in ws2812_buffer_write
      
      * Remove naked malloc
      
      * Drop ws2812_writergb
      
      * Drop support of ws2812.buffers to ws2812_writegrb should use ws2812.buffers:write
      
      * Add support for <>3 colors per leds strips (RGBW)
      
      * Remove ICACHE_FLASH_ATTR
      
      * Add static const on _uartData to avoid initialization penalty
      0577c8af
  9. 11 Apr, 2016 1 commit
  10. 06 Mar, 2016 1 commit
  11. 11 Jan, 2016 2 commits