Setting IRQ handler for Altera UART

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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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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.