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Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Uart data ready

Hi all, I am periodically sending data from LabView to my cycloneIII development kit (bemicro) and I want to check if there is data available to be read in NIOS II. Unfortunately, I have not be...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

--- Quote Start ---

status = IORD_ALTERA_AVALON_UART_STATUS(UART_BASE);

if (status & ALTERA_AVALON_UART_CONTROL_RRDY_MSK)

{

}

--- Quote End ---

In this IF statement,you have put ' & ' operator which is not logical and.It is bitwise and,so any value except 0x00,will cause to go into IF body

I think you should compare your IF result to some specific hex value that you want to get

Ex: if ( status & ALTERA_AVALON_UART_CONTROL_RRDY_MSK == 0x..)

{

temp_read= read_data;

}