altera_avalon_pio_regs.h

nios中自定义指令集实现三角函数的软件部分。

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* Copyright (c) 2003 Altera Corporation, San Jose, California, USA.           *
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#ifndef __ALTERA_AVALON_PIO_REGS_H__
#define __ALTERA_AVALON_PIO_REGS_H__

#include <io.h>

#define IOADDR_ALTERA_AVALON_PIO_DATA(base)           __IO_CALC_ADDRESS_NATIVE(base, 0)
#define IORD_ALTERA_AVALON_PIO_DATA(base)             IORD(base, 0) 
#define IOWR_ALTERA_AVALON_PIO_DATA(base, data)       IOWR(base, 0, data)

#define IOADDR_ALTERA_AVALON_PIO_DIRECTION(base)      __IO_CALC_ADDRESS_NATIVE(base, 1)
#define IORD_ALTERA_AVALON_PIO_DIRECTION(base)        IORD(base, 1) 
#define IOWR_ALTERA_AVALON_PIO_DIRECTION(base, data)  IOWR(base, 1, data)

#define IOADDR_ALTERA_AVALON_PIO_IRQ_MASK(base)       __IO_CALC_ADDRESS_NATIVE(base, 2)
#define IORD_ALTERA_AVALON_PIO_IRQ_MASK(base)         IORD(base, 2) 
#define IOWR_ALTERA_AVALON_PIO_IRQ_MASK(base, data)   IOWR(base, 2, data)

#define IOADDR_ALTERA_AVALON_PIO_EDGE_CAP(base)       __IO_CALC_ADDRESS_NATIVE(base, 3)
#define IORD_ALTERA_AVALON_PIO_EDGE_CAP(base)         IORD(base, 3) 
#define IOWR_ALTERA_AVALON_PIO_EDGE_CAP(base, data)   IOWR(base, 3, data)

/* Defintions for direction-register operation with bi-directional PIOs */
#define ALTERA_AVALON_PIO_DIRECTION_INPUT  0
#define ALTERA_AVALON_PIO_DIRECTION_OUTPUT 1

#endif /* __ALTERA_AVALON_PIO_REGS_H__ */