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While writing EEPROM the interrupts are disturbed... | Cypress Semiconductor

While writing EEPROM the interrupts are disturbed...

Summary: 2 Replies, Latest post by Stub for 2641234 on 04 Jul 2009 02:23 PM PDT
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subbu120785's picture
2 posts


In my project,i use EEPROM.I have no problem in writing and reading data from EEPROM,but while writing EEPROM the interrupts are disturbed. My project needs continuous interrupt service. How can i rectify this problem.......

Stub for 2641234's picture
33 posts

Hi Subbu,

This might be too much late and you might have resolved your issue.

But as a standard firmware rule, interrupt routine should be as small as possible. So interrupt should not keep your CPU engage for most of the time and allow it to do other job.



pmad's picture
Cypress Employee
100 posts


Would you please elaborate the statement that "the Interrupts are disturbed". Also, if you are using I2CHW module and I2CHW_fSendStart() and I2CHW_SendStop() API, then these APIs disable the I2C interrupt, so it needs to be enabled again and pending interrupts of I2C has to be cleared.

If you don't want this to happen then you can wait for some time to complete the write or read transaction. This can be done by a normal for loop.

Also, there is an example project on CY website which might be helpful to you. Here is the link for that project: .


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