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catching interrupt IRQ during processing different interrupt IRQ

Question asked by ml.michal on Aug 26, 2014
Latest reply on Aug 26, 2014 by ml.michal
Hi All, 

please could you help me ... i'm using STM32F407 and i don't know what to do ...
i catch Timer IRQ using NVIC, 
inside procedure of timer IRQ i need to do something that takes time ... but it should be executing without any delay ( spool and run from main while ), 

and i need to process SPI IRQ using NVIC  - it's sufficient to spool received byte into buffer, 
but i don't see that SPI IRQ is raised during processing timer IRQ, 
if i test SPI IRQ without any other IRQs ... work correctly ... 

please help me to find out solution ...

Thanks for all replies , 

Kind regards