Contiki-NG
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Files | |
file | clock-arch.c |
Software clock implementation for the nRF. | |
Functions | |
static void | rtc_handler (nrfx_rtc_int_type_t int_type) |
Function for handling the RTC0 interrupts. More... | |
static void | lfclk_config (void) |
Function starting the internal LFCLK XTAL oscillator. | |
static void | rtc_config (void) |
Function initialization and configuration of RTC driver instance. | |
void | clock_init (void) |
Initialize the clock library. More... | |
clock_time_t | clock_time (void) |
Get the current clock time. More... | |
unsigned long | clock_seconds (void) |
Get the current value of the platform seconds. More... | |
void | clock_wait (clock_time_t i) |
Wait for a given number of ticks. More... | |
void | clock_delay_usec (uint16_t dt) |
Delay a given number of microseconds. More... | |
void | clock_delay (unsigned int i) |
Obsolete delay function but we implement it here since some code still uses it. More... | |
Variables | |
const nrfx_rtc_t | rtc = NRFX_RTC_INSTANCE(0) |
RTC instance used for platform clock. | |
void clock_delay | ( | unsigned int | i | ) |
Obsolete delay function but we implement it here since some code still uses it.
Obsolete delay function but we implement it here since some code still uses it.
Definition at line 170 of file clock-arch.c.
void clock_delay_usec | ( | uint16_t | dt | ) |
Delay a given number of microseconds.
dt | How many microseconds to delay. |
Definition at line 160 of file clock-arch.c.
void clock_init | ( | void | ) |
Initialize the clock library.
This function initializes the clock library and should be called from the main() function of the system.
Initialize the clock library.
We initialise the SysTick to fire 128 interrupts per second, giving us a value of 128 for CLOCK_SECOND
We also initialise GPT0:Timer A, which is used by clock_delay_usec(). We use 16-bit range (individual), count-down, one-shot, no interrupts. The prescaler is computed according to the system clock in order to get 1 tick per usec.
Definition at line 121 of file clock-arch.c.
unsigned long clock_seconds | ( | void | ) |
Get the current value of the platform seconds.
This could be the number of seconds since startup, or since a standard epoch.
Definition at line 144 of file clock-arch.c.
clock_time_t clock_time | ( | void | ) |
Get the current clock time.
This function returns the current system clock time.
Definition at line 129 of file clock-arch.c.
void clock_wait | ( | clock_time_t | t | ) |
Wait for a given number of ticks.
t | How many ticks. |
Definition at line 150 of file clock-arch.c.
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static |
Function for handling the RTC0 interrupts.
int_type | Type of interrupt to be handled |
Definition at line 71 of file clock-arch.c.