[ts-7000] About RTC

["Julien" <>]

Hi Kevin

About the RTC we discussed on the yahoo group, I would like to ask you some details if it's possible.

Is there any way that the same data is in all addresses starting at 0x11700000 ? Because I'm trying to read hours, minutes, etc... when UIP is low, and I obtain the same value for all registers. I'm completly stucked, and have no idea of where the problem comes.
[see below more details about what my program does]

You said that your program read successfully registers to obtain date/hours. Did you meet my wierd problem in the past ?

Thanks.
Regards.

Julien



Here is what I'm doing on my program :
****************************************
rtcfd=open("/dev/mem", O_RDWR|O_SYNC);
RTC_Start_Adresse=(UINT8 *)mmap(0, getpagesize(), PROT_READ|PROT_WRITE, MAP_SHARED, rtcfd, 0x11700000);
RTC_registre_A = RTC_Start_Adresse + 0xA;
RTC_registre_B = RTC_Start_Adresse + 0xB;
				
if(!(*RTC_registre_A & 0x80)) //if UIP = 0
				{
> 					rt_printk("Read Possible :");
> //here is the display of date/hours/years and so on
										}
				else
				{
> rt_printk("Read Not Possible !");r
				}
****************************************


Then I simply read if the MSB of *RTC_registre_A is 0 (ie UIP), if yes I read seconds,minutes, and so on... Here is the result :
****************************************
$ ./gestion_buffer_date_heure
LXRT CHANGED MODE (SYSCALL), PID = 105, SYSCALL = 5.
program launched !
Read Possible :        Reg A = 2       Reg B = 2
Le 2 2/2/2       a 2h 2min 2sec
Finish !
LXRT releases PID 103 (ID: gestion_buffer_).
****************************************


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