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UART RS232 communications using HAL

Altera_Forum
Honored Contributor II
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How would I code a RS232 communications between NIOS and a computer?  

 

I would like to have a preable of the character '%' and end the message with '\r\n'  

 

How can i go about this?
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Altera_Forum
Honored Contributor II
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E.g. using printf() ?

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Altera_Forum
Honored Contributor II
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yes. the printf is pretty striaghtfoward, I just cant figure out how to use the scanf to recieve communications?  

 

Should I do this polling round-robin, or interrupt based receive? Do i check the register to see if there is a message? Is there a software buffer for scanf?
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