41 lines
1009 B
C
41 lines
1009 B
C
#include <kernel/drivers/timer.h>
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#include <kernel/hardware/tmu.h>
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#include <kernel/util/atomic.h>
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/*
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** int timer_instal(int timer_ID)
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**
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** @info
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** This function will uninstall hardware timer.
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** After this function, the timer ID should not be used.
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*/
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int timer_uninstall(int timer_ID)
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{
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extern struct timer_cache_s timercache[TIMER_NUMBER];
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// Check bad ID
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if (timer_ID < 0 || timer_ID >= TIMER_NUMBER)
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return (-1);
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// Start Atomic operation.
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atomic_start();
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// Stop Hardware timer.
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SH7305_TMU.TSTR.BYTE &= ~(1 << timer_ID);
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// Uninit hardware timer.
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SH7305_TMU.TIMER[timer_ID].TCR.UNF = 0; // Clear interrupt flag.
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SH7305_TMU.TIMER[timer_ID].TCR.UNIE = 0; // Disable interrupt.
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SH7305_TMU.TIMER[timer_ID].TCOR = 0xffffffff;
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SH7305_TMU.TIMER[timer_ID].TCNT = 0xffffffff;
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// Free'd timer cache.
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timercache[timer_ID].status = TIMER_UNUSED;
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timercache[timer_ID].callback = NULL;
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timercache[timer_ID].arg = NULL;
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// Stop atomic operation and return.
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atomic_stop();
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return (0);
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}
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