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Reverse merge from trunk in pci_BaS_gcc branch

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This commit is contained in:
David Gálvez
2014-07-10 13:20:14 +00:00
parent 9a93782b77
commit b9bf2e32ba
54 changed files with 1006 additions and 3653 deletions
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52
pci_BaS_gcc/include/wait.h
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@@ -29,23 +29,55 @@
#include <bas_types.h>
#if defined(MACHINE_FIREBEE)
#if MACHINE_FIREBEE
#include "firebee.h"
#elif defined(MACHINE_M5484LITE)
#elif MACHINE_M5484LITE
#include "m5484l.h"
#elif defined(MACHINE_M54455)
#include "m54455.h"
#else
#error "unknown machine"
#endif /* MACHINE_FIREBEE */
#include "MCF5475.h"
typedef bool (*checker_func)(void);
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__ void wait(uint32_t) __attribute__((always_inline));
extern __inline__ bool waitfor(uint32_t us, checker_func condition) __attribute__((always_inline));
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_ */