write char in DE2 SRAM

[Altera_Forum]

hello, 

 Sorry I'm a newbie in NIOSII...   I would like to write and read a char in the SRAM, I try to use itoa function but NIOSII doesn't recognize this function?   I use this command:   IOWR_16DIRECT((SRAM_BASE), 4, "a");  value = IORD_16DIRECT((SRAM_BASE), 4); printf("%d,%s\n", 4,value);   How can I write a char in SRAM whithout itoa function please?   Thx.

[Altera_Forum]

Non standard itoa() function is for convert an integer to a string, it is not related to SRAM, 

 If you want convert numbers to string just use standard function sprintf().  If you want write a single char, use simple quotes 'a', not double quotes "a".

[Altera_Forum]

if i wanna write a char for exemple "abcd" what can i do ? 

thx

[Altera_Forum]

For declaring an initialized string at sram use: 

 char my_str __attribute__ ((section (".sram"))) = "abcde";  my_str must be global. This, assuming you have a sram object.   For copying between memory locations just use memcpy().

[Altera_Forum]

ok thx i'll try it. 

I've one more question about that... what's the ".sram" ? cuz the sram that i use is a new component that i've created in SOPC builder...would like to know if this name should be linked with the name of the component....  Thx

[Altera_Forum]

I've tested your code.... 

I would like to know how you can read this char using IORD_16DIRECT ? How do you write a char as "abcd" at a specific adress ?   Thanks for your help.