File io at a lower irq

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rhubarbdog
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Joined: Tue Nov 07, 2017 11:45 pm

File io at a lower irq

Post by rhubarbdog » Fri Mar 29, 2019 8:37 am

I have a proposed program which will perform some point to point comms between 2 pyboards running an a callback say on the rising edge of a pin. One of the boards writes data to disc.
I'd like this file io to be interrupted and my callback serviced.
What are the issues in having lower irq file io say selectable by a letter that goes in argument 2 of open e.g 'r+b'

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