Hi Guillaume,
gpio_ioctl.chan = x;
That's what determines which gpio device gets used. Since using 1 at
least doesn't give you a core dump, I would guess that 1 is the correct
value to use there.
So the next thing to check is to make sure that the ioctl command codes
being used are right.
The o
Hi John,
Try using channel 1. It may be set up where the first channel is 1 and not
0.
Not sure what you mean...
I'm actually not clear how many devices I should have:
$ grep "GPIO.*BASEADDR"
arch/ppc/platforms/4xx/xparameters/xparameters_ml405.h
#define XPAR_GPIO_0_BASEADDR XPAR_LEDS_4BIT
