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Altera_Forum
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20 years ago

Setting IRQ handler for Altera UART

HI,

I am working on a custom board with 3 UATRS. All 3 always active. I have written an polling based uart driver for this taking U-Boot driver as reference. This works fine. I am using this in application written in NIOS 2 IDE.

Since it is polling based i am losing data on other 2 uarts when working on 1 uart. So Best way to receive data is by setting an IRQ handler for all 3 uarts.

how do i set an interrupt handler for uart ????????????????

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    20 years ago

    --- Quote Start ---

    originally posted by shakthi@Apr 10 2006, 01:20 AM

    hi,

    i am working on a custom board with 3 uatrs. all 3 always active. i have written an polling based uart driver for this taking u-boot driver as reference. this works fine. i am using this in application written in nios 2 ide.

    since it is polling based i am losing data on other 2 uarts when working on 1 uart. so best way to receive data is by setting an irq handler for all 3 uarts.

    How do I set an interrupt handler for UART ????????????????[/b]

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    --- Quote End ---

    [/b]

    --- Quote End ---

    if you use nios2 uclinux, the uart driver code is in drivers/serial/NIOSserial.c .

    up to 4 uarts are supported. (you may add more)

    irq handler is registered with request_irq() kernel api.