mirror of
https://github.com/qmk/qmk_firmware.git
synced 2024-11-30 15:05:50 +00:00
71 lines
2.4 KiB
C
71 lines
2.4 KiB
C
/*
|
|
* 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"
|
|
|
|
/*
|
|
* The WS2812 datasheets define T1H 900ns, T0H 350ns, T1L 350ns, T0L 900ns. Hence, by default, these
|
|
* are chosen to be conservative and avoid problems rather than for maximum throughput; in the code,
|
|
* this is done by default using a WS2812_TIMING parameter that accounts for the whole window (1250ns)
|
|
* and defining T1H and T0H; T1L and T0L are obtained by subtracting their low counterparts from the window.
|
|
*
|
|
* However, there are certain "WS2812"-like LEDs, like the SK6812s, which work in a similar
|
|
* communication topology but use different timings for the window and the T1L, T1H, T0L and T0H.
|
|
* This means that, albeit the same driver being applicable, the timings must be adapted.
|
|
*/
|
|
|
|
#ifndef WS2812_TIMING
|
|
# define WS2812_TIMING 1250
|
|
#endif
|
|
|
|
#ifndef WS2812_T1H
|
|
# define WS2812_T1H 900 // Width of a 1 bit in ns
|
|
#endif
|
|
|
|
#ifndef WS2812_T1L
|
|
# define WS2812_T1L (WS2812_TIMING - WS2812_T1H) // Width of a 1 bit in ns
|
|
#endif
|
|
|
|
#ifndef WS2812_T0H
|
|
# define WS2812_T0H 350 // Width of a 0 bit in ns
|
|
#endif
|
|
|
|
#ifndef WS2812_T0L
|
|
# define WS2812_T0L (WS2812_TIMING - WS2812_T0H) // Width of a 0 bit in ns
|
|
#endif
|
|
|
|
/*
|
|
* 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);
|