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Altera_Forum's avatar
Altera_Forum
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15 years ago

Hello_world_small issue?

Quartus version: 9.0sp2

Nios EDS version: 9.0sp2

I met a problem which confuse me several days,when I code a simple led flashing program by hello_world_small temple,the console give me the state below,but led not flashing,I hav confirm the HW connection and RST pull high.But when I try the debug as hardware mode,it can be work step by step,but when I resume the program it seems running(view in disasemble),but PIO not working,

anyone could help me?

Console in Run As mode:

Using cable "USB-Blaster [USB-0]", device 1, instance 0x00

Pausing target processor: OK

Initializing CPU cache (if present)

OK

Downloading 00000000 ( 0%)

Downloaded 1KB in 0.0s

Verifying 00000000 ( 0%)

Verified OK

Leaving target processor paused

Console in Debug As mode:

mi_cmd_stack_list_frames: No stack.

No symbol "new" in current context.

No symbol "IOWR_ALTERA_AVALON_PIO_DIRECTION" in current context.

Single stepping until exit from function _start,

which has no line number information.

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    15 years ago

    It is so strange,when I add one line code of "printf("Leds are ON\n");"

    It works!
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    15 years ago

    Are you perhaps toggling the LED too fast for the human eye to see such that it looks like it is on continuously?