cslr.h

来自「Configuring External Interrupts on TMS32」· C头文件 代码 · 共 59 行

/*****************************************************\
 *  Copyright 2003, Texas Instruments Incorporated.  *
 *  All rights reserved.                             *
 *  Restricted rights to use, duplicate or disclose  *
 *  this   code   are  granted   through  contract.  *
 *                                                   *
 * "@(#) PSP/CSL  3.0.0.0  (2003-09-30)              *
\*****************************************************/

/* Register layer central -- contains field-manipulation macro definitions */

#ifndef _CSLR_H_
#define _CSLR_H_

/* the "expression" macros */

/* the Field MaKe macro */
#define CSL_FMK(PER_REG_FIELD, val)                                         \
    (((val) << CSL_##PER_REG_FIELD##_SHIFT) & CSL_##PER_REG_FIELD##_MASK)

/* the Field EXTract macro */
#define CSL_FEXT(reg, PER_REG_FIELD)                                        \
    (((reg) & CSL_##PER_REG_FIELD##_MASK) >> CSL_##PER_REG_FIELD##_SHIFT)

/* the Field INSert macro */
#define CSL_FINS(reg, PER_REG_FIELD, val)                                   \
    ((reg) = ((reg) & ~CSL_##PER_REG_FIELD##_MASK)                          \
    | CSL_FMK(PER_REG_FIELD, val))


/* the "token" macros */

/* the Field MaKe (Token) macro */
#define CSL_FMKT(PER_REG_FIELD, TOKEN)                                      \
    CSL_FMK(PER_REG_FIELD, CSL_##PER_REG_FIELD##_##TOKEN)

/* the Field INSert (Token) macro */
#define CSL_FINST(reg, PER_REG_FIELD, TOKEN)                                \
    CSL_FINS((reg), PER_REG_FIELD, CSL_##PER_REG_FIELD##_##TOKEN)


/* the "raw" macros */

/* the Field MaKe (Raw) macro */
#define CSL_FMKR(msb, lsb, val)                                             \
    (((val) & ((1 << ((msb) - (lsb) + 1)) - 1)) << (lsb))

/* the Field EXTract (Raw) macro */
#define CSL_FEXTR(reg, msb, lsb)                                            \
    (((reg) >> (lsb)) & ((1 << ((msb) - (lsb) + 1)) - 1))

/* the Field INSert (Raw) macro */
#define CSL_FINSR(reg, msb, lsb, val)                                       \
    ((reg) = ((reg) &~ (((1 << ((msb) - (lsb) + 1)) - 1) << (lsb)))         \
    | CSL_FMKR(msb, lsb, val))

#endif /* _CSLR_H_ */