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Altera_Forum
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20 years ago

Problem about PIO

Here is my code: # include <stdio.h># include <system.h># include "altera_avalon_pio_regs.h"# include "alt_types.h" int main() { alt_u8 led = 0x1; IOWR(0x00000800,0,led); pri...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

Have you set the direction? If it is defined as an output port only it might not be needed but give it a try. In NIOS 1 I found that the PIO component did as expected but in NIOS2 I have to tell the port to go into output or input mode as required.

Victor Schutte

www.zerksus.com