wiced_result_t wiced_rtos_delay_microseconds( uint32_t microseconds )
{
//rk change
#if 0
uint32_t current_time;
uint32_t duration;
uint32_t elapsed_time = 0;
current_time = host_platform_get_cycle_count( );
duration = ( microseconds * CPU_CYCLES_PER_MICROSECOND );
while ( elapsed_time < duration )
{
elapsed_time = host_platform_get_cycle_count( ) - current_time;
}
#endif
return WICED_SUCCESS;
}
/**
* Delay for a number of milliseconds
*
* Processing of this function depends on the minimum sleep
* time resolution of the RTOS.
* The current thread sleeps for the longest period possible which
* is less than the delay required, then makes up the difference
* with a tight loop
*
* @return wwd_result_t : WWD_SUCCESS if delay was successful
* : WICED_ERROR if an error occurred
*
*/
wwd_result_t host_rtos_delay_milliseconds( uint32_t num_ms )
{
if ( ( num_ms * SYSTICK_FREQUENCY / 1000 ) != 0 )
{
if ( ( tx_thread_sleep( (ULONG) ( num_ms * SYSTICK_FREQUENCY / 1000 ) ) ) != TX_SUCCESS )
{
return WWD_SLEEP_ERROR;
}
}
else
{
uint32_t time_reference = host_platform_get_cycle_count( );
int32_t wait_time = (int32_t)num_ms * CPU_CLOCK_HZ / 1000;
while ( wait_time > 0 )
{
uint32_t current_time = host_platform_get_cycle_count( );
wait_time -= (int32_t)( current_time - time_reference );
time_reference = current_time;
}
}
return WWD_SUCCESS;
}
