S3C2440 RTC 實時時鐘（miniARM 2440 ）

rtc.h

[cpp]

1. #ifndef RTC_H
2. #define RTC_H
4. #include "2440addr.h"
6. //實時時鐘 數據 均為BCD編碼
7. typedef struct tag_RtcTime
8. {
9. //year 默認從0x2000開始，如果要設置為2010年
10. // year 應賦值為0x10;
11. U16 year;
12. char month;
13. char day;
14. char week;
15. char hour;
16. char minite;
17. char second;
18. }RTC_TIME;
19. void RtcSetTime(RTC_TIME rt);
20. RTC_TIME RtcReadTime(void);
21. #endif

rtc.c

[c-sharp]

1. #include "rtc.h"
3. void RtcSetTime(RTC_TIME rt)
4. {
5. rRTCCON = 0x01; //使能寫
7. rBCDYEAR = rt.year;
8. rBCDMON = rt.month;
9. rBCDDATE = rt.week;
10. rBCDDAY = rt.day;
11. rBCDHOUR = rt.hour;
12. rBCDSEC = rt.second;
13. rBCDMIN = rt.minite;
15. rRTCCON &=~0x01;
16. }
17. RTC_TIME RtcReadTime(void)
18. {
19. RTC_TIME rt;
20. //..............
21. return rt;
22. }

測試程序 main.c

[cpp]

1. #include "uart.h"
2. #include "rtc.h"
3. void delay(U32 tt)
4. {
5. U32 i;
6. for(;tt>0;tt--)
7. {
8. for(i=0;i<10000;i++){}
9. }
11. }
13. int Main(void)
14. {
15. //char buffer[50]={0};
16. RTC_TIME rt;
18. rt.year=0x10;
19. rt.month=0x01;
20. rt.day=0x05;
21. rt.week=0x02;
22. rt.hour=0x22;
23. rt.second=0x00;
24. rt.minite=0x01;
26. RtcSetTime(rt);
27. UartInit(9600);
28. //rRTCCON = 0x01; //使能寫
29. while(1)
30. {
31. UartSendStr("RTC Test/r/n");
32. //sprintf(buffer,"%04x-%02x-%02x-%02x-%02x-%02x/r/n",
33. // rBCDYEAR+0x2000,rBCDMON,rBCDDAY,rBCDHOUR,rBCDMIN,rBCDSEC);
34. // UartSendStr(buffer);
35. // UartPrintf("%x/r/n",255);
36. UartPrintf("%04x-%02x-%02x/r/n",rBCDYEAR+0x2000,rBCDMON,rBCDDAY);
37. delay(2000);
38. }
39. return 0;
40. }