System and time¶
Functions¶
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int
os_init(void)¶ Returns: 0 on success, -1 on errors Low-level system setup. Should be always called first at start of application main entry point. Generally will at least set all ports as inputs.
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void
os_quit(void)¶ Will de-initialize system. On many smaller targets this is just an empty define and does nothing.
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time_t
os_timei(void)¶ Returns: seconds since some unspecified constant point in the past, usually system boot
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os_time_t
os_timef(void)¶ Returns: seconds since some unspecified constant point in the past, usually system boot
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void
os_sleepi(time_t t)¶ Parameters: - t (time_t) – seconds to sleep
Sleep given amount of seconds. On most targets this is stupid while-loop that simply blocks.
Macros¶
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os_delay_us(delay)¶ Parameters: - delay – microseconds to sleep
This usually calls target specific macro, like _delay_us() in AVR and
__delay_us()in PIC.
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os_delay_ms(delay)¶ Parameters: - delay – milliseconds to sleep
This usually calls target specific macro, like _delay_ms() in AVR and
__delay_ms()in PIC.