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removed inlining in wait.c, added (simple) map-based MMU handling

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Markus Fröschle
2014-01-18 14:03:25 +00:00
parent 6d0643b885
commit a612252d9a
6 changed files with 220 additions and 134 deletions
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44
BaS_gcc/include/wait.h
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@@ -39,45 +39,9 @@
typedef bool (*checker_func)(void);
extern __inline__ void wait(uint32_t) __attribute__((always_inline));
extern __inline__ bool waitfor(uint32_t us, checker_func condition) __attribute__((always_inline));
extern void wait(uint32_t);
extern bool waitfor(uint32_t us, checker_func condition);
extern uint32_t get_timer(void);
extern void wait_ms(uint32_t ms);
extern __inline__ uint32_t get_timer(void)
{
return MCF_SLT_SCNT(0);
}
/*
* wait for the specified number of us on slice timer 0. Replaces the original routines that had
* the number of useconds to wait for hardcoded in their name.
*/
extern __inline__ void wait(uint32_t us)
{
int32_t target = MCF_SLT_SCNT(0) - (us * (SYSCLK / 1000));
while (MCF_SLT_SCNT(0) - target > 0);
}
/*
* same as above, but with milliseconds wait time
*/
extern __inline__ void wait_ms(uint32_t ms)
{
wait(ms * 1000);
}
/*
* the same as above, with a checker function which gets called while
* busy waiting and allows for an early return if it returns true
*/
extern __inline__ bool waitfor(uint32_t us, checker_func condition)
{
int32_t target = MCF_SLT_SCNT(0) - (us * (SYSCLK / 1000));
bool res;
do
{
if ((res = (*condition)()))
return res;
} while (MCF_SLT_SCNT(0) - target > 0);
return false;
}
#endif /* _WAIT_H_ */