mirror of
https://github.com/openstenoproject/qmk
synced 2024-11-15 04:54:43 +00:00
41 lines
1.3 KiB
C
41 lines
1.3 KiB
C
/* Copyright 2021 QMK
|
|
*
|
|
* 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 3 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/>.
|
|
*/
|
|
|
|
#include <ch.h>
|
|
#include <hal.h>
|
|
|
|
#include "_wait.h"
|
|
|
|
#ifdef WAIT_US_TIMER
|
|
void wait_us(uint16_t duration) {
|
|
static const GPTConfig gpt_cfg = {1000000, NULL, 0, 0}; /* 1MHz timer, no callback */
|
|
|
|
if (duration == 0) {
|
|
duration = 1;
|
|
}
|
|
|
|
/*
|
|
* Only use this timer on the main thread;
|
|
* other threads need to use their own timer.
|
|
*/
|
|
if (chThdGetSelfX() == &ch.mainthread && duration < (1ULL << (sizeof(gptcnt_t) * 8))) {
|
|
gptStart(&WAIT_US_TIMER, &gpt_cfg);
|
|
gptPolledDelay(&WAIT_US_TIMER, duration);
|
|
} else {
|
|
chThdSleepMicroseconds(duration);
|
|
}
|
|
}
|
|
#endif
|