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#include "project.h"
static volatile uint32_t delay_ms_count;
void
sys_tick_handler (void)
{
if (delay_ms_count)
delay_ms_count--;
}
void
ticker_on (void)
{
/*168MHz 1ms */
systick_set_reload (48000);
systick_set_clocksource (STK_CSR_CLKSOURCE_AHB);
systick_counter_enable();
/* this done last */
systick_interrupt_enable();
}
void
ticker_off (void)
{
systick_interrupt_disable();
systick_counter_disable();
}
void
delay_ms (uint32_t d)
{
ticker_on();
delay_ms_count = d;
while (delay_ms_count);
ticker_off();
}
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