38 lines
556 B
C
38 lines
556 B
C
#include <hw/csr.h>
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#include "timer.h"
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unsigned int get_system_frequency(void)
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{
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return identifier_frequency_read();
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}
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void timer_enable(int en)
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{
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timer0_en_write(en);
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}
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unsigned int timer_get(void)
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{
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return timer0_value_read();
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}
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void timer_set_counter(unsigned int value)
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{
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timer0_value_write(value);
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}
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void timer_set_reload(unsigned int value)
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{
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timer0_reload_write(value);
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}
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void busy_wait(unsigned int ds)
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{
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timer_enable(0);
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timer_set_reload(0);
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timer_set_counter(get_system_frequency()/10*ds);
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timer_enable(1);
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while(timer_get());
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}
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