cpu/xmega/include/cpu/regs.h

Go to the documentation of this file.

#ifndef CPU_REGS_H_INCLUDED
#define CPU_REGS_H_INCLUDED

#define XMEGA_CPU_BASE  0x30    //!< Base address of CPU registers

#define CPUR_CCP        0x04    //!< Configuration Change Protection
#define CPUR_RAMPD      0x08    //!< Extended Direct Address
#define CPUR_RAMPX      0x09    //!< Extended X Pointer
#define CPUR_RAMPY      0x0a    //!< Extended Y Pointer
#define CPUR_RAMPZ      0x0b    //!< Extended Z Pointer
#define CPUR_EIND       0x0c    //!< Extended Indirect
#define CPUR_SPL        0x0d    //!< Stack Pointer Low
#define CPUR_SPH        0x0e    //!< Stack Pointer High
#define CPUR_SREG       0x0f    //!< Status Register
# define CPUR_SREG_I            (1 << 7)        //!< Interrupt Enable
# define CPUR_SREG_T            (1 << 6)        //!< Bit Copy Storage
# define CPUR_SREG_H            (1 << 5)        //!< Half Carry
# define CPUR_SREG_S            (1 << 4)        //!< Sign
# define CPUR_SREG_V            (1 << 3)        //!< Overflow
# define CPUR_SREG_N            (1 << 2)        //!< Negative
# define CPUR_SREG_Z            (1 << 1)        //!< Zero
# define CPUR_SREG_C            (1 << 0)        //!< Carry

#define CPU_REG(name)  (XMEGA_CPU_BASE + CPUR_##name)

/* CCP commands */
#define CCP_SPM         0x9D
#define CCP_IOREG       0xD8

#ifndef __ASSEMBLY__

#include <io.h>

#define cpu_read_reg8(reg)                                              \
        mmio_read8((void *)(XMEGA_CPU_BASE + CPUR_##reg))

#define cpu_write_reg8(reg, value)                                      \
        mmio_write8((void *)(XMEGA_CPU_BASE + CPUR_##reg), value)

#else /* __ASSEMBLY__ */

/* Register manipulation macros */
#define LD_CPUREG(val, name)    in      val, XMEGA_CPU_BASE + CPUR_##name
#define ST_CPUREG(val, name)    out     XMEGA_CPU_BASE + CPUR_##name, val

#endif /* __ASSEMBLY__ */

#endif /* CPU_REGS_H_INCLUDED */

---