Uart Interrupt for data Reading

[NeethuVP]

Hi,
I would like to read data from UART when an interrupt hits UART.. Using atemga256rfr2.. Help me to solve it

 

[KlausST]

Hi,

And where exactly is the problem?

You surely have done some internet research, found some code and tested it.

Show us this code, show us your test conditions, show us your expectations and show us what you see instead.

Klaus

 

[kripacharya]

Interrupts don't 'hit' the uart. Instead uart generates an interrupt (if it is so configured) when it receives a complete character in it's buffer, and the mcu just has to read contents of the RX buffer.

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So config your uart to generate interrupt on full receive, setup the ISR for the isr.
In the isr, read the rx port and store in appropriate ram buffer. Set a flag for main routine to pick up/ read buffer and take action.