Contiki-NG
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Files | |
file | clock.c |
Software clock implementation for the nRF52. | |
Functions | |
static void | rtc_handler (nrf_drv_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 nrf_drv_rtc_t | rtc = NRF_DRV_RTC_INSTANCE(PLATFORM_RTC_INSTANCE_ID) |
RTC instance used for platform clock. | |
void clock_delay | ( | unsigned int | i | ) |
void clock_delay_usec | ( | uint16_t | dt | ) |
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.
unsigned long clock_seconds | ( | void | ) |
clock_time_t clock_time | ( | void | ) |
void clock_wait | ( | clock_time_t | t | ) |