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Cosmetic fixes.

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This commit is contained in:
Uwe Hermann
2010-03-06 15:22:09 +01:00
parent e6c72d5cfc
commit a6342d4968
6 changed files with 27 additions and 22 deletions
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42
include/libopenstm32/tools.h
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@@ -20,20 +20,24 @@
#ifndef LIBOPENSTM32_TOOLS_H
#define LIBOPENSTM32_TOOLS_H
/******************************************************************************
/*
* Register accessors / manipulators
******************************************************************************/
*/
/* Get register content */
/* Get register content. */
#define GET_REG(REG) ((u16) *REG)
/* Set register content */
/* Set register content. */
#define SET_REG(REG, VAL) (*REG = (u16)VAL)
/* Clear register bit */
/* Clear register bit. */
#define CLR_REG_BIT(REG, BIT) SET_REG(REG, (~BIT))
/* Clear register bit masking out some bits that must not be touched */
#define CLR_REG_BIT_MSK(REG, MSK, BIT) SET_REG(REG, (GET_REG(REG) & \
MSK & (~BIT)))
/* Get masked out bit value */
/* Clear register bit masking out some bits that must not be touched. */
#define CLR_REG_BIT_MSK(REG, MSK, BIT) \
SET_REG(REG, (GET_REG(REG) & MSK & (~BIT)))
/* Get masked out bit value. */
#define GET_REG_BIT(REG, BIT) (GET_REG(REG) & BIT)
/*
@@ -44,15 +48,17 @@
* bitmask BIT then we write 1 and if the bit in the masked window is
* matching the bitmask BIT we write 0.
*
* TODO: we may need a faster implementation of that one?
* TODO: We may need a faster implementation of that one?
*/
#define TOG_SET_REG_BIT_MSK(REG, MSK, BIT) { \
register u16 toggle_mask = GET_REG(REG) & MSK; \
register u16 bit_selector; \
for(bit_selector = 1; bit_selector; bit_selector <<= 1){ \
if((bit_selector & BIT) != 0) toggle_mask ^= bit_selector; \
} \
SET_REG(REG, toggle_mask); \
}
#define TOG_SET_REG_BIT_MSK(REG, MSK, BIT) \
{ \
register u16 toggle_mask = GET_REG(REG) & MSK; \
register u16 bit_selector; \
for (bit_selector = 1; bit_selector; bit_selector <<= 1) { \
if ((bit_selector & BIT) != 0) \
toggle_mask ^= bit_selector; \
} \
SET_REG(REG, toggle_mask); \
}
#endif