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Altera_Forum's avatar
Altera_Forum
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16 years ago

UART not sending characters

I started with the Cylcone 2 development a few months back. If I send a string of 800 characters some of them are not received at the host even at 9600. I tried three different UARTs. Tha avalon v...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Some suggestions:

1. Try looping back the data to the Nios to eliminate the host being an issue.

2. Try using the altera hal uart implementation. I've had no problems with it.

3. Try measuring the baud rate with a scope.

4. Examine the rs-232 signals for handshaking. HW or SW handshaking?

Good luck.