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Altera_Forum's avatar
Altera_Forum
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8 years ago

Unrecognizable characters received via NIOS II UART

Hi all, I am configuring my DE0-Nano SOC kit for NIOS based UART communication (RS232). Everything is done as per the available literature. Connections are also done as: GPIO[1] as Rx connect...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

Your Baud rate is clearly not what you expect it to be.

In order for your FPGA to generate the correct baud rate you not only need to tell it the baud rate but the system clock frequency too. Are you setting this up 'as per the available literature'?

Are you able to measure - e.g. with an oscilloscope - the resulting baud rate you have? This might give you a pointer as to what order of magnitude out you are.

Cheers,

Alex