[Voyage-linux] GPIO on WRAP

[(spam-protected)]

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Hi

I found the following code from Josef Liska, LRP-Project:

#LED 3: On
echo "A" | dd of=/dev/port bs=1 count=1 seek=62466
#LED 3: Off
echo "L" | dd of=/dev/port bs=1 count=1 seek=62466
#LED 2: On
echo "A" | dd of=/dev/port bs=1 count=1 seek=62464
#LED 2: Off
echo "L" | dd of=/dev/port bs=1 count=1 seek=62464
#LED 1: On
echo "H" | dd of=/dev/port bs=1 count=1 seek=62464
#LED 1: Off
echo "D" | dd of=/dev/port bs=1 count=1 seek=62464


It work's with some minor bugs... LED 1 and 2 could not be switched on
off separatly from each other.

You will find in the manual of the board the following documentation of
the GPIO port:

Front panel LEDs and switch
LED1 (D3)   GPIO2  write I/O port [GPIOBASE]   bit 2 0 = light
LED2 (D2)   GPIO3  write I/O port [GPIOBASE]   bit 3 0 = light
LED3 (D1)   GPIO18 write I/O port [GPIOBASE]   bit 18 0 = light
Switch (S1) GPIO40 read I/O port [GPIOBASE+20] bit 8 0 = pressed

With tinyBIOS, GPIOBASE is 0F400h. If you would like to write a more
generic driver, use the SC1100 I/O base registers to determine GPIOBASE.

I also heard that there should be a kernel module (gpio) to drive the
led's but I did not find any instructions for this purpose...

Have phun!
rOger

Solomon Asare schrieb:
> Hi All,
> has anyone done any work on gpio that he will want to
> share?
> 
> Thanks.
> 
> solo.

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