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CC13xx/CC26xx clock implementation

Files

file  clock-arch.c
 Implementation of the clock libary for CC13xx/CC26xx.
 
file  clock-arch.h
 Header file for the CC13xx/CC26xx clock implementation.
 

Functions

bool clock_arch_enter_idle (void)
 Prepare to enter some low-power mode. More...
 
void clock_arch_exit_idle (void)
 Cleanup after returning from low-power mode.
 
void clock_arch_standby_policy (void)
 Called by the Power driver when dropping to some low-power state.
 
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 usec)
 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...
 

Detailed Description

Function Documentation

◆ clock_arch_enter_idle()

bool clock_arch_enter_idle ( void  )

Prepare to enter some low-power mode.

Return value indicates if we are ready or not to enter some low-power mode.

Returns
true if ready; else false.

Definition at line 142 of file clock-arch.c.

Referenced by platform_idle().

◆ clock_delay()

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 260 of file clock-arch.c.

◆ clock_delay_usec()

void clock_delay_usec ( uint16_t  dt)

Delay a given number of microseconds.

Parameters
dtHow many microseconds to delay.
Note
Interrupts could increase the delay by a variable amount.

Definition at line 250 of file clock-arch.c.

◆ clock_init()

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 200 of file clock-arch.c.

◆ clock_seconds()

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.

Returns
The value.

Definition at line 234 of file clock-arch.c.

◆ clock_time()

clock_time_t clock_time ( void  )

Get the current clock time.

This function returns the current system clock time.

Returns
The current clock time, measured in system ticks.

Definition at line 222 of file clock-arch.c.

◆ clock_wait()

void clock_wait ( clock_time_t  t)

Wait for a given number of ticks.

Parameters
tHow many ticks.

Definition at line 241 of file clock-arch.c.