Suggest to add reading function for ISER on LPCOpen

[jeremyhsiao]

Hi,

According to user manual of LPC11U6X and this post LPC11 - interrupts during IAP , SW needs to temporarily disable interrupt before using IAP calls. My idea is to (1) backup ISER0 (2) write all-one to ICER0 (3) IAP-call (4) Write backup-value back to ISER0. However, without relevant function SW can only read it from register directly. 

Is it possible to add API to read ISER so that SW can read it without direct-accessing register?

Thanks.

BR 

Jeremy

[kerryzhou]

Hi Jeremy Hsiao,

    Actually, you don't need to read out the ISER and clear ICER, you can just do it like the lpcopen periph_flashiap project.

   Before you do the IAP call, you disable the interrupt with this code:

     __disable_irq();

   After you finish the IAP function, you can enable the interrupt with this code:

   __enable_irq();

Wish it helps you!

If you still have question about it, please kindly let me know.

Have a great day,
Kerry

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