nios UART RS232 Interrupt Mode settings

Hi,

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I understand(maybe I'm wrong) that it has two modes: Polling and Interrupt.

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You are right.

In polling mode, you have to read sometimes.

In interrupt mode, your interrupt routine handles the received character.

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In the Interrupt mode a driver should run automatically and store the data received in a circular way.

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Wrong, it only store ONE character (7 or 8 bits)

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I tried to write to the uart more than 1 byte[...]

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I have employ FIFOed UART from http://www.alterawiki.com/wiki/fifoed_avalon_uart, a little difficult to "plug" in SOPC.

OR Write your own buffer(s). It is not so difficult if you understood the principles.

Reduced drivers : I think they don't work in Interrupt Mode.