2  * ds1302.c - Support for the Dallas Semiconductor DS1302 Timekeeping Chip
34 	while (num--) printf("%x ", *ptr++);  in DUMP()
55 	unsigned char hr10:2;	/* 10 (0-2) or am/pm (am/pm, 0-1) */
72 	unsigned char WP:1;		/* write protect 1=protect 0=unprot */
176 	DPRINTF("WRITE 0x%x bytes @ 0x%x [ ", count, addr);  in write_ser_drv()
179 	addr&=~1;	/* WRITE */  in write_ser_drv()
200 	/* disable write protect */  in rtc_init()
227 		bbclk.year10=100/10;	/* 2000 - why not? ;) */  in rtc_init()
232 	/* Write out the changes if needed */  in rtc_init()
234 		/* enable write protect */  in rtc_init()
238 		/* Else just turn write protect on */  in rtc_init()
267 		rel = -1;  in rtc_get()
270 	tmp->tm_sec=10*bbclk.sec10+bbclk.sec;  in rtc_get()
271 	tmp->tm_min=10*bbclk.min10+bbclk.min;  in rtc_get()
272 	tmp->tm_hour=10*bbclk.hr10+bbclk.hr;  in rtc_get()
273 	tmp->tm_wday=bbclk.day;  in rtc_get()
274 	tmp->tm_mday=10*bbclk.date10+bbclk.date;  in rtc_get()
275 	tmp->tm_mon=10*bbclk.month10+bbclk.month;  in rtc_get()
276 	tmp->tm_year=10*bbclk.year10+bbclk.year + 1900;  in rtc_get()
278 	tmp->tm_yday = 0;  in rtc_get()
279 	tmp->tm_isdst= 0;  in rtc_get()
281 	DPRINTF("Get DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",  in rtc_get()
282 		tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,  in rtc_get()
283 		tmp->tm_hour, tmp->tm_min, tmp->tm_sec );  in rtc_get()
295 	DPRINTF("Set DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",  in rtc_set()
296 		tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,  in rtc_set()
297 		tmp->tm_hour, tmp->tm_min, tmp->tm_sec);  in rtc_set()
301 	bbclk.WP=1; /* write protect when we're done */  in rtc_set()
303 	bbclk.sec10=tmp->tm_sec/10;  in rtc_set()
304 	bbclk.sec=tmp->tm_sec%10;  in rtc_set()
306 	bbclk.min10=tmp->tm_min/10;  in rtc_set()
307 	bbclk.min=tmp->tm_min%10;  in rtc_set()
309 	bbclk.hr10=tmp->tm_hour/10;  in rtc_set()
310 	bbclk.hr=tmp->tm_hour%10;  in rtc_set()
312 	bbclk.day=tmp->tm_wday;  in rtc_set()
314 	bbclk.date10=tmp->tm_mday/10;  in rtc_set()
315 	bbclk.date=tmp->tm_mday%10;  in rtc_set()
317 	bbclk.month10=tmp->tm_mon/10;  in rtc_set()
318 	bbclk.month=tmp->tm_mon%10;  in rtc_set()
320 	tmp->tm_year -= 1900;  in rtc_set()
321 	bbclk.year10=tmp->tm_year/10;  in rtc_set()
322 	bbclk.year=tmp->tm_year%10;  in rtc_set()
324 	write_ser_drv(0x8e,&b,1);           /* disable write protect */  in rtc_set()
325 	write_ser_drv(0xbe,(unsigned char *)&bbclk, 8);     /* write burst */  in rtc_set()