The RTC of LPC2378 is corrupting its Hours field.
From the RTC of LPC 2378 we will getting Day,Month,year,Hours,Minutes,Seconds fields, in genral RTC will be updated continiously..but one odd time the hours field is geeting corrupted.
The following are the date time deatls..
15/02/11 21:01:09 15/02/11 21:01:10 15/02/11 21:01:11 .. .. .. 15/02/11 21:58:56 15/02/11 21:58:57 15/02/11 21:58:58
15/02/11 17:58:59 -----------> corrupted here(The hours field is abruptly jumped from 21 to 17) 15/02/11 17:59:00
Can anybody may explain what might be the problem? and solution to this type of problems
Regards, P.Mahesh
What does your power decoupling look like? Do not mention any capacitors more than 1cm from the uC.
Erik
I working for last 6 years on ARM …At one of the project GE POWER by using NXP - LPC2378 I get these type of problems. but finally I found solution ….
Problem: when I using max number UART’s(3) handling of IRQ and QUE and SD CARD (time) writing in data in to it. Not only Hr..and also sec. and cyclic time of total task.
Solution : I isolate the each function and checking .only RTC I never got error. then I tried to increment the delay cyclic time of total task.don't use RTC PULSE for WDT
Happy to receive the message, this is exactly the same problem what we are facing now.
U r guidance will help us in finding the solution to our problem
As u said, we are using 4 UARTs and SD card in our application. it is corrupting not only Hours but remaining fields also.
Can u please elobarte the solution
U mean that when IRQ's are generated along with SD card application it may corrupt the RTC fields?
"when IRQ's are generated along with SD card application it may corrupt the RTC fields?"
Have you checked the chip's Errata for any mention of such problems?