How to use small driver of JTAG_UART

[Altera_Forum]

Dear All, 

<div class='quotetop'>QUOTE </div>  --- Quote Start ---    &#9632; Specify the preprocessor option -DALTERA_AVALON_JTAG_UART_SMALL. You can use this option if you want the small, polled implementation of the JTAG UART driver, but you do not want to affect the drivers for other devices.[/b]  --- Quote End ---     I find the information above from Altera Embedded Peripherals Handbook.pdf--page68.  But I don&#39;t know how to implement it.  I have tried define ALTERA_AVALON_JTAG_UART_SMALL in project properties: C/C++ Build->Tool Settings->Nios II Compiler->Preprocessor->Defined Symbols   But after recompiling project, I found that it didn&#39;t take effect. JTAG_UART still work in interrupt-driven way. Also I can step into altera_avalon_jtag_uart.c to prove that fast driver is in use.   I do not want to affect the drivers for other devices when use small driver of JTAG_UART. So I need to use ALTERA_AVALON_JTAG_UART_SMALL symbol.  Anyone help? David

[Altera_Forum]

I have solved this issue. 

<div class='quotetop'>QUOTE </div>  --- Quote Start ---  I have tried define ALTERA_AVALON_JTAG_UART_SMALL in project properties: C/C++ Build->Tool Settings->Nios II Compiler->Preprocessor->Defined Symbols[/b]  --- Quote End ---   This operation should work on system library project but not on your application project. http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/biggrin.gif http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/happy.gif

[Altera_Forum]

--- Quote Start ---  originally posted by david_cai@Jul 13 2006, 08:13 AM i have solved this issue. <div class='quotetop'>quote   --- quote end ---    --- quote start ---  i have tried define altera_avalon_jtag_uart_small in project properties: c/c++ build->tool settings->nios ii compiler->preprocessor->defined symbols  --- Quote End ---   This operation should work on system library project but not on your application project. http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/biggrin.gif http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/happy.gif  <div align='right'><{post_snapback}> (index.php?act=findpost&pid=16851)</div> [/b]  --- Quote End ---   Hi David_Cai! Another way to define ALTERA_AVALON_JTAG_UART_SMALL in Nios IDE is checked box in "System Library Properties" -> Reduce device drivers  http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/smile.gif