Fix incorrect delay when setting WS2812 (and similar) leds (#9302)

* Fix incorrect delay when setting WS2812 (and similar) leds

* Add documentation for WS2812_DELAY_MICROSECONDS

* Remove improper cast to uint8_t

Co-authored-by: Sergey Vlasov <sigprof@gmail.com>

* Remove unneeded cast to uint8_t and correct math

Co-authored-by: Sergey Vlasov <sigprof@gmail.com>

* microseconds -> µs

Co-authored-by: Ryan <fauxpark@gmail.com>

* Make documentation better match the spec sheet.

Co-authored-by: Ryan <fauxpark@gmail.com>

* Rename macro to match spec sheet

* Further correction to the delay maths for the SPI case.

Co-authored-by: Joel Challis <git@zvecr.com>

* Move ws2812_common.h to the drivers directory

* Revert "Further correction to the delay maths for the SPI case."

This reverts commit e61b56a2cfc7dfec9992a7a3af92afa50e5b8ec0.

* Remove ws2812_setleds_pin(); consolidate ws2812.h

Co-authored-by: Sergey Vlasov <sigprof@gmail.com>
Co-authored-by: Ryan <fauxpark@gmail.com>
Co-authored-by: Joel Challis <git@zvecr.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/docs/ws2812_driver.md b/docs/ws2812_driver.md
index fe5f88585..941e1bde0 100644
--- a/docs/ws2812_driver.md
+++ b/docs/ws2812_driver.md
@@ -19,6 +19,15 @@ These LEDs are called "addressable" because instead of using a wire per color, e
 
 ## Driver configuration
 
+### All drivers
+
+Different versions of the addressable LEDs have differing requirements for the T<sub>RST</sub> period between frames.
+The default setting is 280 µs, which should work for most cases, but this can be overridden in your config.h. e.g.:
+
+```c
+#define WS2812_TRST_US 80
+```
+
 ### Bitbang
 Default driver, the absence of configuration assumes this driver. To configure it, add this to your rules.mk: