Contiki 2.6
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Files | |
file | clock.c |
This file contains AVR-specific code to implement the Contiki core clock functions. | |
Functions | |
void | clock_init (void) |
Start the clock by enabling the timer comparison interrupts. | |
clock_time_t | clock_time (void) |
Return the tick counter. | |
unsigned long | clock_seconds (void) |
Return seconds, default is time since startup. | |
void | clock_set_seconds (unsigned long sec) |
Set seconds, e.g. | |
void | clock_wait (clock_time_t t) |
Wait for a number of clock ticks. | |
void | clock_delay_usec (uint16_t howlong) |
Delay a given number of microseconds. | |
void | clock_delay_msec (uint16_t howlong) |
Delay up to 65535 milliseconds. | |
void | clock_adjust_ticks (clock_time_t howmany) |
Adjust the system current clock time. | |
void | AVR_OUTPUT_COMPARE_INT (void) |
ISR for the TIMER0 or TIMER2 interrupt as defined in clock-avr.h for the particular MCU. |
void clock_adjust_ticks | ( | clock_time_t | howmany | ) |
Adjust the system current clock time.
Adjust clock ticks after a cpu sleep.
dt | How many ticks to add |
Typically used to add ticks after an MCU sleep clock_seconds will increment if necessary to reflect the tick addition. Leap ticks or seconds can (rarely) be introduced if the ISR is not blocked.
Definition at line 289 of file clock.c.
References CLOCK_SECOND.
void clock_delay_msec | ( | uint16_t | howlong | ) |
Delay up to 65535 milliseconds.
Delay the CPU for up to 65535 milliseconds.
dt | How many milliseconds to delay. |
Neither interrupts nor the watchdog timer is disabled over the delay. Platforms are not required to implement this call.
Definition at line 260 of file clock.c.
References clock_delay_usec().
void clock_delay_usec | ( | uint16_t | howlong | ) |
Delay a given number of microseconds.
dt | How many microseconds to delay. |
Delay a given number of microseconds.
Use the 250KHz MACA clock for longer delays to avoid interrupt effects. However that can't be used if the radio is being power cycled!
Definition at line 196 of file clock.c.
Referenced by cc2430_rf_command(), clock_delay(), clock_delay_msec(), and main().
void clock_init | ( | void | ) |
unsigned long clock_seconds | ( | void | ) |
void clock_set_seconds | ( | unsigned long | sec | ) |
clock_time_t clock_time | ( | void | ) |
void clock_wait | ( | clock_time_t | t | ) |
Wait for a number of clock ticks.
Wait for a given number of ticks.
Definition at line 166 of file clock.c.
References clock_time().