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declared wait()-routines as inline void volatile since gcc decided to optimize out them sometimes. Do we need __attribute__(always_inline) ?

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This commit is contained in:
Markus Fröschle
2012-11-18 10:10:38 +00:00
parent 3101237277
commit 0b5e4aca81
3 changed files with 15 additions and 7 deletions
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4
BaS_gcc/sources/BaS.c
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@@ -19,8 +19,8 @@ extern void sd_card_idle();
extern int sd_card_init();
/* wait...() routines moved to sysinit.c */
extern inline void wait(uint32_t us);
extern inline bool waitfor(uint32_t us,int (*condition)(void));
extern inline void wait(volatile uint32_t us);
extern inline volatile bool waitfor(volatile uint32_t us,int (*condition)(void));
/* Symbols from the linker script */
extern uint8_t _STRAM_END[];

14
BaS_gcc/sources/sd_card.c
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@@ -6,7 +6,9 @@
#include <MCF5475.h>
#include "bas_printf.h"
extern void wait(uint32_t value);
extern void wait(volatile uint32_t value);
#ifdef _NOT_USED_ /* disabled assembler routines */
void sd_card_idle(void)
{
@@ -37,6 +39,7 @@ int sd_card_init(void)
return ret;
}
#endif /* _NOT_USED_ */
uint32_t sd_com(uint32_t command)
{
@@ -51,7 +54,7 @@ uint32_t sd_com(uint32_t command)
return ret;
}
void sd_init(void)
void sd_card_init(void)
{
uint32_t ret;
int i;
@@ -89,7 +92,6 @@ void sd_init(void)
wait(10000);
MCF_DSPI_DMCR = 0x800d3c00;
for (i = 0; i < 10; i++)
{
ret = sd_com(0x082000ff);
@@ -107,8 +109,14 @@ void sd_init(void)
ret = sd_com(0x082000ff);
}
MCF_DSPI_DMCR = 0x800d3c00;
wait(10000);
xprintf("finished\r\n");
}
void sd_card_idle(void)
{
}

4
BaS_gcc/sources/sysinit.c
View File

@@ -26,7 +26,7 @@ extern volatile long _VRAM; /* start address of video ram from linker script */
* 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.
*/
inline void wait(uint32_t us)
inline volatile void wait(uint32_t us)
{
uint32_t target = MCF_SLT_SCNT(0) - (us * 132);
@@ -37,7 +37,7 @@ inline void wait(uint32_t us)
* the same as above, with a checker function which gets called while
* busy waiting and allows for an early return if it returns true
*/
inline bool waitfor(uint32_t us, int (*condition)(void))
inline volatile bool waitfor(volatile uint32_t us, int (*condition)(void))
{
uint32_t target = MCF_SLT_SCNT(0) - (us * 132);