how to access the jtag uart in the nios code

Honored Contributor

16 years ago

When you say "NIOS small footprint" I assume you mean you are enabling certain options in your BSP or "System Library" settings such as:

"Reduced Device Drivers"

"Small C Library"

These do have impact on some of the STDIO functions and on the JTAG UART.

Specifically, have a look at the section starting on page 6-30 of the following document:

This section details methods for reducing code size.

Specifically, if you enable "Reduced Device Drivers", the JTAG uart operates in polled mode rather then IRQ mode.

Also, if you use the small C library you don't got stdio input functions (like getc() or getchar()).

Jake

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