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Issue PIC24FJ256GB110 irq Serial1 (#INT_RDA) Freez system
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ciccioc74



Joined: 23 Mar 2010
Posts: 39

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PostPosted: Thu Feb 13, 2025 3:41 am     Reply with quote
Quote:
This is why I prefer to give UART streams names that correspond to the
physical UART they use, so you 'know' which port is involved.

sorry could you give me an example?
Ttelmah



Joined: 11 Mar 2010
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PostPosted: Thu Feb 13, 2025 6:39 am     Reply with quote
So the stream that connects to the RS485, and uses UART4, call something
line RS485_U4. Then the handler is for INT_RDA4. If you change to using
a different UART, change the stream name to correspond to what UART it
uses, and any discrepancy becomes obvious.
I suspect you are actually reading the wrong UART in one of your interrupt
handlers, and hence the lockup.
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