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Altera_Forum's avatar
Altera_Forum
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12 years ago

Uart loopback

Hello guys, I have created a nios2 system with a uart port: uart_0 I have put the rx_uart and tx_uart in short circuit. So I expect that what I send is what I get. Finally I have writ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

Thank you for your reply !! I have tried with a multimeter and I put the write comman in a loop. What I see is that the pin is always at 0 V.

There is an instruction that put a specified pin (eg pin_d22) on high state so that i can test if the pin i have assigned to the txd_uart is the pin I really use in hardware ? It could be harmful ?

Alternatively what about if I set the output pin (tx_uart) as the clock pin ?

Thank you !!

Have a nice day.