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

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* 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>
This commit is contained in:
Joshua Diamond 2020-06-19 22:59:28 -04:00 • committed by GitHub
parent c785148445
commit 18e561b82c
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8 changed files with 29 additions and 47 deletions
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drivers/ws2812.h Normal file
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/*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include "quantum/color.h"
/*
* Older WS2812s can handle a reset time (TRST) of 50us, but recent
* component revisions require a minimum of 280us.
*/
#if !defined(WS2812_TRST_US)
#define WS2812_TRST_US 280
#endif
/* User Interface
*
* Input:
* ledarray: An array of GRB data describing the LED colors
* number_of_leds: The number of LEDs to write
*
* The functions will perform the following actions:
* - Set the data-out pin as output
* - Send out the LED data
* - Wait 50us to reset the LEDs
*/
void ws2812_setleds(LED_TYPE *ledarray, uint16_t number_of_leds);