1 //==========================================================================
3 // wallclock_mpc5xx.cxx
5 // mpc5xx RTC module driver.
7 //==========================================================================
8 //####ECOSGPLCOPYRIGHTBEGIN####
9 // -------------------------------------------
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27 // or inline functions from this file, or you compile this file and link it
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38 // -------------------------------------------
39 //####ECOSGPLCOPYRIGHTEND####
40 //==========================================================================
41 //#####DESCRIPTIONBEGIN####
43 // Author(s): Bob Koninckx
44 // Contributors: Bob Koninckx
46 // Purpose: Wallclock driver for mpc5xx
48 //####DESCRIPTIONEND####
50 //==========================================================================
52 #include <pkgconf/wallclock.h> // Wallclock device config
54 #include <cyg/hal/hal_io.h> // IO macros
55 #include <cyg/infra/cyg_type.h> // Common type definitions and support
57 #include <cyg/io/wallclock.hxx> // The WallClock API
58 #include <cyg/io/wallclock/wallclock.inl> // Helpers
60 #include <cyg/hal/hal_arch.h> // RTC register definitions
62 #include <cyg/infra/diag.h> // For debugging
64 //-----------------------------------------------------------------------------
65 // Functions required for the hardware-driver API.
67 // Returns the number of seconds elapsed since 1970-01-01 00:00:00.
69 Cyg_WallClock::get_hw_seconds(void)
72 HAL_READ_UINT32(CYGARC_REG_IMM_RTC, now);
77 #ifndef CYGSEM_WALLCLOCK_SET_GET_MODE
80 Cyg_WallClock::init_hw_seconds(void)
82 cyg_uint32 key = 0x55ccaa33;
85 // Write zero to the time register
86 // and start up the RTC
87 HAL_WRITE_UINT32(CYGARC_REG_IMM_RTCK, key);
88 HAL_WRITE_UINT32(CYGARC_REG_IMM_RTCSCK, key);
91 HAL_WRITE_UINT32(CYGARC_REG_IMM_RTC, key);
92 HAL_READ_UINT16(CYGARC_REG_IMM_RTCSC, rtcsc);
94 HAL_WRITE_UINT16(CYGARC_REG_IMM_RTCSC, rtcsc);
97 #endif // CYGSEM_WALLCLOCK_SET_GET_MODE
99 //-----------------------------------------------------------------------------
100 // End of wallclock_mpc5xx.cxx