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

PIO LEDs always on

Hello, i have a NiosII sopc with a PIO[24] called LED. It is connected to the LEDs on the DE3 board. now i have a simple application : # define LED_BASE 0x00041010 // this is the base i...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

in sopc the LEDs are only output.

In Quartus i have a Blockdiagram with the nios-system and outputs connected to the leds (in the pin assignment they are connected as well) the Blockdiagramm is set as top level entity.

Another thing i tried is this: 

# define Buttons (volatile char *) 0x00040000# define LEDs (char *) 0x00041010
void main()
{ while (1)
*LEDs = *Buttons;
}

Nothing happens...

And another question, i have all unused pins set as input. there is a 7-segment display on the board which i do not use. but two of the lighsts are on.. how can this be?