1 //==========================================================================
3 // devs/wallclock/mips/ref4955/ref4955.cxx
5 // Wallclock implementation
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####
44 // Contributors: jskov
46 // Purpose: Wallclock driver for REF4955
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/infra/diag.h> // For debugging
62 // REF4955 has a Dallas 1742W part.
63 #define DS_BASE 0xb5000000
64 #include <cyg/io/wallclock/ds1742.inl>
66 //-----------------------------------------------------------------------------
67 // Functions required for the hardware-driver API.
69 // Returns the number of seconds elapsed since 1970-01-01 00:00:00.
71 Cyg_WallClock::get_hw_seconds(void)
73 cyg_uint32 year, month, mday, hour, minute, second;
75 get_ds_hwclock(&year, &month, &mday, &hour, &minute, &second);
78 // This will cause the test to eventually fail due to these printouts
79 // causing timer interrupts to be lost...
80 diag_printf("year %02d\n", year);
81 diag_printf("month %02d\n", month);
82 diag_printf("mday %02d\n", mday);
83 diag_printf("hour %02d\n", hour);
84 diag_printf("minute %02d\n", minute);
85 diag_printf("second %02d\n", second);
88 cyg_uint32 now = _simple_mktime(year, month, mday, hour, minute, second);
92 #ifdef CYGSEM_WALLCLOCK_SET_GET_MODE
94 // Sets the clock. Argument is seconds elapsed since 1970-01-01 00:00:00.
96 Cyg_WallClock::set_hw_seconds( cyg_uint32 secs )
98 cyg_uint32 year, month, mday, hour, minute, second;
100 _simple_mkdate(secs, &year, &month, &mday, &hour, &minute, &second);
102 set_ds_hwclock(year, month, mday, hour, minute, second);
108 Cyg_WallClock::init_hw_seconds(void)
110 #ifdef CYGSEM_WALLCLOCK_SET_GET_MODE
113 // This is our base: 1970-01-01 00:00:00
114 // Set the HW clock - if for nothing else, just to be sure it's in a
115 // legal range. Any arbitrary base could be used.
116 // After this the hardware clock is only read.
117 set_ds_hwclock(1970,1,1,0,0,0);
121 //-----------------------------------------------------------------------------
122 // End of devs/wallclock/mips/ref4955/wallclock_ref4955.cxx