mirror of
https://github.com/openstenoproject/qmk
synced 2024-11-15 04:54:43 +00:00
60 lines
2.2 KiB
C
60 lines
2.2 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/>.
|
|
*/
|
|
#pragma once
|
|
|
|
#include <ch.h>
|
|
#include <hal.h>
|
|
|
|
/* chThdSleepX of zero maps to infinite - so we map to a tiny delay to still yield */
|
|
#define wait_ms(ms) \
|
|
do { \
|
|
if (ms != 0) { \
|
|
chThdSleepMilliseconds(ms); \
|
|
} else { \
|
|
chThdSleepMicroseconds(1); \
|
|
} \
|
|
} while (0)
|
|
|
|
#ifdef WAIT_US_TIMER
|
|
void wait_us(uint16_t duration);
|
|
#else
|
|
# define wait_us(us) \
|
|
do { \
|
|
if (us != 0) { \
|
|
chThdSleepMicroseconds(us); \
|
|
} else { \
|
|
chThdSleepMicroseconds(1); \
|
|
} \
|
|
} while (0)
|
|
#endif
|
|
|
|
#include "_wait.c"
|
|
|
|
/* For GPIOs on ARM-based MCUs, the input pins are sampled by the clock of the bus
|
|
* to which the GPIO is connected.
|
|
* The connected buses differ depending on the various series of MCUs.
|
|
* And since the instruction execution clock of the CPU and the bus clock of GPIO are different,
|
|
* there is a delay of several clocks to read the change of the input signal.
|
|
*
|
|
* Define this delay with the GPIO_INPUT_PIN_DELAY macro.
|
|
* If the GPIO_INPUT_PIN_DELAY macro is not defined, the following default values will be used.
|
|
* (A fairly large value of 0.25 microseconds is set.)
|
|
*/
|
|
#ifndef GPIO_INPUT_PIN_DELAY
|
|
# define GPIO_INPUT_PIN_DELAY (CPU_CLOCK / 1000000L / 4)
|
|
#endif
|
|
|
|
#define waitInputPinDelay() wait_cpuclock(GPIO_INPUT_PIN_DELAY)
|