qmk-firmware/tmk_core/common/wait.h

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#ifndef WAIT_H
#define WAIT_H
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#include <inttypes.h>
#ifdef __cplusplus
extern "C" {
#endif
#if defined(__AVR__)
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# include <util/delay.h>
# define wait_ms(ms) _delay_ms(ms)
# define wait_us(us) _delay_us(us)
#elif defined PROTOCOL_CHIBIOS
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# include "ch.h"
# define wait_ms(ms) \
do { \
if (ms != 0) { \
chThdSleepMilliseconds(ms); \
} else { \
chThdSleepMicroseconds(1); \
} \
} while (0)
# define wait_us(us) \
do { \
if (us != 0) { \
chThdSleepMicroseconds(us); \
} else { \
chThdSleepMicroseconds(1); \
} \
} while (0)
#elif defined PROTOCOL_ARM_ATSAM
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# include "clks.h"
# define wait_ms(ms) CLK_delay_ms(ms)
# define wait_us(us) CLK_delay_us(us)
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#elif defined(__arm__)
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# include "wait_api.h"
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#else // Unit tests
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void wait_ms(uint32_t ms);
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# define wait_us(us) wait_ms(us / 1000)
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#endif
#ifdef __cplusplus
}
#endif
#endif