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fixup! drivers/ws281x: add SysTick + GPIO LL backend

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This commit is contained in:
Marian Buschsieweke 2024-05-03 19:39:13 +02:00
parent 51d2b85f1b
commit 1bbce1f351
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1 changed files with 0 additions and 15 deletions
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drivers/ws281x/systick_gpio_ll.c
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@ -37,21 +37,6 @@
#define ENABLE_DEBUG 0
#include "debug.h"
/* (+ NS_PER_SEC - 1): Rounding up, as T1H is the time that needs to distinctly
* longer than T0H.
*
* Then adding +1 extra, because the spin loop adds another layer of jitter. A
* more correct version would be to add the spin loop time before rounding (and
* then rounding up), but as that time is not available, spending one more
* cycle is the next best thing to do. */
const int ticks_one = ((uint64_t)WS281X_T_DATA_ONE_NS * WS281X_TIMER_FREQ + NS_PER_SEC - 1)
/ NS_PER_SEC + 1;
/* Rounding down, zeros are better shorter */
const int ticks_zero = (uint64_t)WS281X_T_DATA_ZERO_NS * (uint64_t)WS281X_TIMER_FREQ / NS_PER_SEC;
/* No particular known requirements, but we're taking longer than that anyway
* because we don't clock the times between bits. */
const int ticks_data = (uint64_t)WS281X_T_DATA_NS * (uint64_t)WS281X_TIMER_FREQ / NS_PER_SEC;
static void _systick_start(uint32_t ticks)
{
/* disable SysTick, clear value */