Documentation:AVR32 Linux Development/How to make leds flash with BSP2.0 image (2.6.18)

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This how to assumes that you have the 2.6.18 prebuilt image installed from the 2.0 BSP ( on a stk1000/1002 )

[edit] Disabling switches

Before enabling the led's you need to disable the switches if you has not done this before follow these simple steps

  • check if switches are enabled.

~ # cd config/gpio/
 /config/gpio # cat switches/enabled 0 or 1

  • if result is 0 then the switches are already off, else type.

/config/gpio # echo 0 > switches/enabled

  • then use the cat command to check that the switches are now off. Result should now be 0

[edit] Enabling LEDS

Before enabling these leds check that SW4 are on GPIO/PS2B and that you connect J1 to J15

  • type the following commands

/config/gpio # mkdir leds
/config/gpio # cd leds
/config/gpio/leds # echo 0xff > pin_mask
/config/gpio/leds # echo 0xff > oe_mask
/config/gpio/leds # echo 1 > gpio_id
/config/gpio/leds # echo 1 > enabled

  • on the last command you would probably see all the leds go from brigth to dark. The next command starts sending random numbers to the leds making all of them flash

/config/gpio/leds # cat /dev/urandom > /dev/gpio1

  • you can also type in number to see them binary on the leds:

/config/gpio/leds # echo 0x34 > /dev/gpio1

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